JP2010095466A - Oil-in-water emulsion cosmetic and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easily producible oil-in-water emulsion cosmetic having good dispersibility and excellent application feeling. <P>SOLUTION: The oil-in-water emulsion cosmetic contains (a) a polyoxyalkylene-modified diorganopolysiloxane expressed by the formula: A(R<SP>1</SP>)<SB>2</SB>SiOä(R<SP>1</SP>)<SB>2</SB>SiO}<SB>m</SB>ä(R<SP>1</SP>)(R<SP>2</SP>)SiO}<SB>n</SB>Si(R<SP>1</SP>)<SB>2</SB>A (wherein R<SP>1</SP>is a univalent hydrocarbon group or univalent substituted hydrocarbon group (excluding a group corresponding to R<SP>2</SP>); R<SP>2</SP>is polyoxyalkylene expressed by the formula: -R<SP>3</SP>-O-(C<SB>2</SB>H<SB>4</SB>O)<SB>a</SB>(C<SB>3</SB>H<SB>6</SB>O)<SB>b</SB>R<SP>4</SP>; A is hydroxy or a group selected from R<SP>1</SP>and R<SP>2</SP>; 1≤a≤50; 0≤b≤50; 10≤a+b; 100≤m≤500; and 0≤n≤40; when n=0, at least one of A is R<SP>2</SP>), (b) a surfactant, (c) an oil agent, (d) a hydrophilic alcohol, (e) water and preferably (g) a water-soluble polymer. The method for producing the cosmetic comprises mixing of an emulsifiable composition comprising the components (a) to (d) with water. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to an oil-in-water emulsion cosmetic comprising a polyoxyalkylene-modified diorganopolysiloxane having a specific structure, a surfactant, an oil, a hydrophilic alcohol that is liquid at room temperature, a new oily cosmetic material, and water, Furthermore, the present invention relates to an oil-in-water emulsion cosmetic comprising a water-soluble polymer.

The present invention also provides an emulsifiable composition comprising a polyoxyalkylene-modified diorganopolysiloxane having a specific structure, a surfactant, an oil agent, and hydrophilic alcohols that are liquid at room temperature, as described above. Oil-in-water emulsion cosmetics can be easily produced, and oils, new oily cosmetic raw materials and water-soluble polymers are emulsified or dispersed in water in a fine and extremely uniform state. The present invention relates to a method for producing an oil-in-water emulsion cosmetic, characterized in that an oil-in-water emulsion cosmetic can be obtained.

Silicone oils, particularly low viscosity silicone oils, are blended in many cosmetics because they have excellent progress, refreshing feeling, lubricity, water repellency, safety and the like. However, the properties of silicone oil are very different from those of other oils. To prepare cosmetics in which silicone oil is well solubilized or dispersed in water or an aqueous ethanol solution, the composition is optimized or special and large. The emulsification conditions had to be optimized using a scale emulsifier. Furthermore, a composition that provides optimized emulsification conditions is not necessarily a composition that can exhibit the characteristics of a suitable cosmetic, and in particular, a cosmetic that contains silicone oil, which has stability over time, feel. In order to optimize the composition and emulsification conditions excellent in characteristics such as moisture retention and product appearance, a great amount of labor and cost are required.

Patent Document 1 proposes a solubilized composition comprising silicone oil, high-molecular polyoxyalkylene-modified diorganopolysiloxane, ethanol and water. Such a solubilized composition is obtained by emulsifying an oil agent such as silicone oil or hydrocarbon oil in a large amount of water using the high-molecular-weight polyether-modified silicone, in order to prepare an emulsion having excellent stability over time. However, the emulsification conditions during production had to be optimized, and it was difficult to prepare easily.

On the other hand, the present inventors use a composition for producing cosmetics comprising a hydrophilic medium such as a polyoxyalkylene-modified diorganopolysiloxane having a specific structure, a surfactant, an oil agent, and more preferably a hydrophilic alcohol. Therefore, it has been found that the optimization of the emulsification conditions is almost unnecessary, and that a stable and small-sized oil-in-water emulsion can be obtained with a simple stirring device and mixing device. Proposed. In addition, an invention of a cosmetic comprising the composition for cosmetic production was proposed. Furthermore, the manufacturing method of the water-containing cosmetics characterized by using the said composition for cosmetics manufacture was proposed (patent document 2). Moreover, in the said patent document, this inventor proposed that the cosmetics which consist of this cosmetics manufacture composition can be added with arbitrary cosmetic raw materials.

On the other hand, in oil-in-water emulsion cosmetics such as sunscreen cosmetics, emulsions having a relatively large average particle size may be preferred in terms of use feeling, and the particle size is preferably 0.01 to 0.50 μm. The approach of emulsifying to a small particle size may not be preferred. Furthermore, when an emulsion cosmetic is prepared by emulsifying a lipophilic cosmetic raw material typified by an organic or inorganic ultraviolet absorber together with other oil agents or separately from these oil agents, the oil agent and the lipophilic cosmetic raw material Since the emulsification characteristics are different, there may be a problem that the lipophilic component is separated over time, and the usability as a cosmetic product is not fully satisfactory. Also, in oil-in-water emulsion cosmetics in which an oil agent and a lipophilic cosmetic raw material are emulsified in water using a hydrophilic polymer component for the purpose of improving the feeling of use such as the touch, oil agents that are oily components and UV absorption The compatibility between the agent and the hydrophilic polymer component was insufficient, and the storage stability and feeling of use of the oil-in-water emulsion cosmetic were not fully satisfactory. In particular, in sunscreen cosmetics that are oil-in-water emulsions that require a high UV protection index (hereinafter referred to as SPF) in order to ensure a long-term sunscreen effect, a certain amount or more of UV protection components and oils (particularly, , Silicone oil) can be stably emulsified in water, and there has been a demand for a sunscreen cosmetic that is excellent in compatibility with the hydrophilic polymer component and excellent in feeling of use.

JP 2000-313808 A Japanese Patent Laying-Open No. 2008-069115 (International Publication WO2008 / 032883)

The present invention has been made in order to solve the above-mentioned problems, and an oil-in-water emulsion cosmetic in which an oil agent and a lipophilic cosmetic raw material are uniformly or stably emulsified or dispersed in water and has an excellent feeling of use and the like. The purpose is to provide. Furthermore, the present invention provides an oil-in-water emulsion cosmetic in which an oil agent, a lipophilic cosmetic raw material, and a hydrophilic polymer component are uniformly or stably emulsified or dispersed in water and have an excellent feeling of use. Objective. In addition, the present invention can emulsify the above components in water with a simple stirring device and mixing device without using a special emulsifying device, and is excellent in fine particles with excellent stability over time, feeling of use, product appearance, etc. An object of the present invention is to provide a method for producing an oil-in-water emulsion cosmetic that can easily obtain an oil-in-water emulsion cosmetic having a diameter.

（式中、Ｒ^１は一価炭化水素基または一価置換炭化水素基（ただし、Ｒ^２に該当するものを除く）であり、Ｒ^２は一般式（２）：−Ｒ^３−Ｏ−（Ｃ_２Ｈ_４Ｏ）_ａ（Ｃ_３Ｈ_６Ｏ）_ｂＲ^４で示されるポリオキシアルキレン基（式中、Ｒ^３は炭素原子数２〜３０のアルキレン基であり、Ｒ^４は水素原子，炭素原子数１〜３０のアルキル基または−（ＯＣ）−Ｒ^５で表される有機基（Ｒ^５は炭素原子数１〜３０のアルキル基）から選択される基であり、Ａは水酸基、Ｒ^１およびＲ^２から選択される同一または異種の基であり、
ａ、ｂはそれぞれ１≦ａ≦５０、０≦ｂ≦５０であり、かつ１０≦ａ＋ｂ≦１００であり、ｍ，ｎはそれぞれ１００≦ｍ≦５００、０≦ｎ≦４０である。ｎ＝０の場合、Ａの少なくとも一方はＲ^２である。）、
（ｂ）１種類以上の界面活性剤（ただし、成分（ａ）に該当するものを除く）、
（ｃ）１種類以上の油剤、
（ｄ）分子中に少なくとも1個の水酸基を有し、室温で液状である１種類以上の親水性アルコール類、
（ｅ）１種類以上の親油性化粧品原料 および
（ｆ）水 を含んでなることを特徴とする水中油型エマルジョン化粧料；
さらに、（ｇ）水溶性高分子 を含んでなることを特徴とする水中油型エマルジョン化粧料により前記課題を解決できることを見出し、本発明に到達した。 As a result of intensive studies, the present inventors have found that (a) polyoxyalkylene-modified diorganopolysiloxane represented by the average structural formula (1)

(In the formula, R ¹ is a monovalent hydrocarbon group or a monovalent substituted hydrocarbon group (excluding those corresponding to R ² ), and R ² is represented by the general formula (2): —R ³ —O— ( C ₂ H ₄ O) _a (C ₃ H ₆ O) _b R ⁴ polyoxyalkylene group (wherein R ³ is an alkylene group having 2 to 30 carbon atoms, R ⁴ is a hydrogen atom, carbon It is a group selected from an alkyl group having 1 to 30 atoms or an organic group represented by-(OC) -R ⁵ (R ⁵ is an alkyl group having 1 to 30 carbon atoms), A is a hydroxyl group, R ¹ And the same or different groups selected from R ² ,
a and b are 1 ≦ a ≦ 50 and 0 ≦ b ≦ 50, respectively, and 10 ≦ a + b ≦ 100, and m and n are 100 ≦ m ≦ 500 and 0 ≦ n ≦ 40, respectively. For n = 0, at least one of A is ^{R 2.} ),
(B) one or more surfactants (except for those corresponding to component (a)),
(C) one or more oil agents;
(D) one or more hydrophilic alcohols having at least one hydroxyl group in the molecule and being liquid at room temperature,
An oil-in-water emulsion cosmetic comprising (e) one or more lipophilic cosmetic raw materials and (f) water;
Furthermore, the present inventors have found that the above-mentioned problem can be solved by an oil-in-water emulsion cosmetic comprising (g) a water-soluble polymer.

In addition, the inventors
100 parts by weight of the component (d), 0.9 to 90 parts by weight of the component (a), 0.6 to 120 parts by weight of the component (b) and 0 to 150 parts by weight of one or more oil agents An emulsifiable composition (P) obtained by uniformly mixing in advance,
(C-2) one or more oil agents,
(E) one or more lipophilic cosmetic ingredients,
(F) A method for producing an oil-in-water emulsion cosmetic comprising mixing water;
Furthermore, the above-mentioned emulsifiable composition (P), component (c-2), component (e), component (f), and (g) an oil-in-water type characterized by mixing one or more water-soluble polymers The present inventors have found that the above-mentioned problems can be solved by a method for producing an emulsion cosmetic, and have reached the present invention.

（式中、Ｒ^１は一価炭化水素基または一価置換炭化水素基（ただし、Ｒ^２に該当するものを除く）であり、Ｒ^２は一般式（２）：−Ｒ^３−Ｏ−（Ｃ_２Ｈ_４Ｏ）_ａ（Ｃ_３Ｈ_６Ｏ）_ｂＲ^４で示されるポリオキシアルキレン基（式中、Ｒ^３は炭素原子数２〜３０のアルキレン基であり、Ｒ^４は水素原子，炭素原子数１〜３０のアルキル基または−（ＯＣ）−Ｒ^５で表される有機基（Ｒ^５は炭素原子数１〜３０のアルキル基）から選択される基であり、Ａは水酸基、Ｒ^１およびＲ^２から選択される同一または異種の基であり、
ａ、ｂはそれぞれ１≦ａ≦５０、０≦ｂ≦５０であり、かつ１０≦ａ＋ｂ≦１００であり、ｍ，ｎはそれぞれ１００≦ｍ≦５００、０≦ｎ≦４０である。ｎ＝０の場合、Ａの少なくとも一方はＲ^２である。）、
（ｂ）１種類以上の界面活性剤（ただし、成分（ａ）に該当するものを除く）、
（ｃ）１種類以上の油剤
（ｄ）分子中に少なくとも1個の水酸基を有し、室温で液状である１種類以上の親水性アルコール類、
（ｅ）１種類以上の親油性化粧品原料 および
（ｆ）水 を含んでなることを特徴とする水中油型エマルジョン化粧料。
[2] さらに、（ｇ）水溶性高分子 を含んでなることを特徴とする、[1]に記載の水中油型エマルジョン化粧料。
[3] 成分（ｅ）が、紫外線防御成分、ガム状シリコーン、シリコーン樹脂、シリコーンエラストマー粉末、生理活性成分、香料および色素からなる群から選択される１種類以上の親油性化粧品原料であることを特徴とする、[1]に記載の水中油型エマルジョン化粧料。
[4] 透過型顕微鏡を用いて測定した平均粒子径が０．５０〜１０．０μｍの水中油型エマルジョン化粧料であることを特徴とする[1]〜[3]のいずれか１項に記載の水中油型エマルジョン化粧料。
[5] 成分（ｅ）が、少なくとも１種の紫外線防御成分を含有する親油性化粧品原料であり、日焼け止め化粧料であることを特徴とする[1]または[2]に記載の水中油型エマルジョン化粧料。
[5-1] 成分（ｅ）が、少なくとも１種の有機系紫外線防御成分であり、（ｇ）水溶性高分子を含有する日焼け止め化粧料であることを特徴とする[2]に記載の水中油型エマルジョン化粧料。
[5-2] 成分（ｅ）が、少なくとも１種の無機系紫外線防御成分であり、さらに水膨潤性粘土鉱物を含有する日焼け止め化粧料であることを特徴とする[1]、 [2]または[5-1]に記載の水中油型エマルジョン化粧料。
[6] 成分（ｂ）が、ポリオキシアルキレン変性ジオルガノポリシロキサン（ただし、成分（ａ）よりジオルガノポリシロキサン部分の重合度が小さく、ＨＬＢが３〜１０である）、ポリオキシアルキレンアルキルエーテル、ソルビタン脂肪酸エステル、ポリオキシアルキレンソルビタン脂肪酸エステル、ポリオキシエチレン硬化ヒマシ油およびポリオキシアルキレン脂肪酸エステルからなる群から選択される１種類以上のノニオン性界面活性剤を含有することを特徴とする[1]または[2]に記載の水中油型エマルジョン化粧料。 That is, the present invention
“[1] (a) Polyoxyalkylene-modified diorganopolysiloxane represented by the average structural formula (1)

(In the formula, R ¹ is a monovalent hydrocarbon group or a monovalent substituted hydrocarbon group (excluding those corresponding to R ² ), and R ² is represented by the general formula (2): —R ³ —O— ( C ₂ H ₄ O) _a (C ₃ H ₆ O) _b R ⁴ polyoxyalkylene group (wherein R ³ is an alkylene group having 2 to 30 carbon atoms, R ⁴ is a hydrogen atom, carbon It is a group selected from an alkyl group having 1 to 30 atoms or an organic group represented by-(OC) -R ⁵ (R ⁵ is an alkyl group having 1 to 30 carbon atoms), A is a hydroxyl group, R ¹ And the same or different groups selected from R ² ,
a and b are 1 ≦ a ≦ 50 and 0 ≦ b ≦ 50, respectively, and 10 ≦ a + b ≦ 100, and m and n are 100 ≦ m ≦ 500 and 0 ≦ n ≦ 40, respectively. For n = 0, at least one of A is ^{R 2.} ),
(B) one or more surfactants (except for those corresponding to component (a)),
(C) one or more oil agents (d) one or more hydrophilic alcohols having at least one hydroxyl group in the molecule and being liquid at room temperature,
An oil-in-water emulsion cosmetic comprising (e) one or more lipophilic cosmetic raw materials and (f) water.
[2] The oil-in-water emulsion cosmetic according to [1], further comprising (g) a water-soluble polymer.
[3] The component (e) is one or more lipophilic cosmetic raw materials selected from the group consisting of an ultraviolet protection component, gum-like silicone, silicone resin, silicone elastomer powder, bioactive component, fragrance and pigment. The oil-in-water emulsion cosmetic according to [1], which is characterized.
[4] The oil-in-water emulsion cosmetic according to any one of [1] to [3], which is an oil-in-water emulsion cosmetic having an average particle diameter of 0.50 to 10.0 μm measured using a transmission microscope. Oil-in-water emulsion cosmetics.
[5] The oil-in-water type according to [1] or [2], wherein the component (e) is a lipophilic cosmetic raw material containing at least one UV protection component and is a sunscreen cosmetic Emulsion cosmetics.
[5-1] The component (e) is at least one organic ultraviolet protection component, and (g) is a sunscreen cosmetic containing a water-soluble polymer. Oil-in-water emulsion cosmetics.
[5-2] Ingredient (e) is a sunscreen cosmetic containing at least one inorganic ultraviolet protection component and further containing a water-swellable clay mineral [1], [2] Or the oil-in-water emulsion cosmetic described in [5-1].
[6] The component (b) is a polyoxyalkylene-modified diorganopolysiloxane (however, the degree of polymerization of the diorganopolysiloxane portion is smaller than that of the component (a) and the HLB is 3 to 10), polyoxyalkylene alkyl ether And at least one nonionic surfactant selected from the group consisting of sorbitan fatty acid ester, polyoxyalkylene sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil and polyoxyalkylene fatty acid ester [1 ] Or the oil-in-water emulsion cosmetic according to [2].

（式中、Ｒ^１は一価炭化水素基または一価置換炭化水素基（ただし、Ｒ^２に該当するものを除く）であり、Ｒ^２は一般式（２）：−Ｒ^３−Ｏ−（Ｃ_２Ｈ_４Ｏ）_ａ（Ｃ_３Ｈ_６Ｏ）_ｂＲ^４で示されるポリオキシアルキレン基（式中、Ｒ^３は炭素原子数２〜３０のアルキレン基であり、Ｒ^４は水素原子，炭素原子数１〜３０のアルキル基または−（ＯＣ）−Ｒ^５で表される有機基（Ｒ^５は炭素原子数１〜３０のアルキル基）から選択される基であり、Ａは水酸基、Ｒ^１およびＲ^２から選択される同一または異種の基であり、
ａ、ｂはそれぞれ１≦ａ≦５０、０≦ｂ≦５０であり、かつ１０≦ａ＋ｂ≦１００であり、ｍ，ｎはそれぞれ１００≦ｍ≦５００、０≦ｎ≦４０である。ｎ＝０の場合、Ａの少なくとも一方はＲ^２である。） ０．９〜９０質量部、
（ｂ） １種類以上の界面活性剤（ただし、成分（ａ）に該当するものを除く）０．６〜１２０質量部 および
（ｃ−１） １種類以上の油剤 ０〜１５０質量部を事前に均一に混合することにより得られた乳化性組成物（Ｐ）、
（ｃ−２） １種類以上の油剤、
（ｅ）１種類以上の親油性化粧品原料 および
（ｆ）水
を混合することを特徴とする、[1]に記載の水中油型エマルジョン化粧料の製造方法。
[8] （ｄ） 分子中に少なくとも1個の水酸基を有し、室温で液状である１種類以上の親水性アルコール類 １００重量部、
（ａ） 平均構造式（１）で表されるポリオキシアルキレン変性ジオルガノポリシロキサン

（式中、Ｒ^１は一価炭化水素基または一価置換炭化水素基（ただし、Ｒ^２に該当するものを除く）であり、Ｒ^２は一般式（２）：−Ｒ^３−Ｏ−（Ｃ_２Ｈ_４Ｏ）_ａ（Ｃ_３Ｈ_６Ｏ）_ｂＲ^４で示されるポリオキシアルキレン基（式中、Ｒ^３は炭素原子数２〜３０のアルキレン基であり、Ｒ^４は水素原子，炭素原子数１〜３０のアルキル基または−（ＯＣ）−Ｒ^５で表される有機基（Ｒ^５は炭素原子数１〜３０のアルキル基）から選択される基であり、Ａは水酸基、Ｒ^１およびＲ^２から選択される同一または異種の基であり、
ａ、ｂはそれぞれ１≦ａ≦５０、０≦ｂ≦５０であり、かつ１０≦ａ＋ｂ≦１００であり、ｍ，ｎはそれぞれ１００≦ｍ≦５００、０≦ｎ≦４０である。ｎ＝０の場合、Ａの少なくとも一方はＲ^２である。） ０．９〜９０質量部、
（ｂ） １種類以上の界面活性剤（ただし、成分（ａ）に該当するものを除く）０．６〜１２０質量部 および
（ｃ−１） １種類以上の油剤 ０〜１５０質量部を事前に均一に混合することにより得られた乳化性組成物（Ｐ）、
（ｃ−２） １種類以上の油剤、
（ｅ）１種類以上の親油性化粧品原料、
（ｆ）水 および
（ｇ）１種類以上の水溶性高分子
を混合することを特徴とする、[2]に記載の水中油型エマルジョン化粧料の製造方法。
[9] 上記乳化性組成物（Ｐ）１００質量部当り、成分（ｃ−２） １０〜３００質量部、成分（ｅ） １０〜３００質量部および成分（ｆ） １００〜２，０００質量部であることを特徴とする、[7]に記載の水中油型エマルジョン化粧料の製造方法。
[10] 成分（ｅ）が、少なくとも１種の紫外線防御成分を含有する親油性化粧品原料であることを特徴とする、[7]または[8]に記載の水中油型エマルジョン化粧料の製造方法。
[10-1] 成分（ｅ）が、少なくとも１種の有機系紫外線防御成分であり、（ｆ）水 および（ｇ）１種類以上の水溶性高分子を混合することにより製造することを特徴とする日焼け止め化粧料の製造方法である、[8]に記載の水中油型エマルジョン化粧料の製造方法。
[10-2] 成分（ｅ）が、少なくとも１種の無機系紫外線防御成分であり、（ｆ）水および水膨潤性粘土鉱物を混合することにより製造することを特徴とする日焼け止め化粧料の製造方法である、[7]または[8]に記載の水中油型エマルジョン化粧料の製造方法。
[11] 成分（ｂ）が（ｂ１）1種類以上のイオン性界面活性剤と（ｂ２）1種類以上のノニオン性界面活性剤とからなることを特徴とする[7]または[8]に記載の水中油型エマルジョン化粧料の製造方法。
[12] 成分（ｂ）が、ポリオキシアルキレン変性ジオルガノポリシロキサン（ただし、成分（ａ）よりジオルガノポリシロキサン部分の重合度が小さく、ＨＬＢが３〜１０である）、ポリオキシアルキレンアルキルエーテル、ソルビタン脂肪酸エステル、ポリオキシアルキレンソルビタン脂肪酸エステル、ポリオキシエチレン硬化ヒマシ油およびポリオキシアルキレン脂肪酸エステルからなる群から選択される１種類以上のノニオン性界面活性剤を含有することを特徴とする、[7]または[8]に記載の水中油型エマルジョン化粧料の製造方法。
[13] 透過型顕微鏡を用いて測定した平均粒子径が０．５０〜１０．０μｍの水中油型エマルジョン化粧料の製造方法である、[7]〜[12]のいずれか１項に記載の水中油型エマルジョン化粧料の製造方法。」に関する。 [7] (d) 100 parts by weight of one or more hydrophilic alcohols having at least one hydroxyl group in the molecule and being liquid at room temperature;
(A) Polyoxyalkylene-modified diorganopolysiloxane represented by the average structural formula (1)

(In the formula, R ¹ is a monovalent hydrocarbon group or a monovalent substituted hydrocarbon group (excluding those corresponding to R ² ), and R ² is represented by the general formula (2): —R ³ —O— ( C ₂ H ₄ O) _a (C ₃ H ₆ O) _b R ⁴ polyoxyalkylene group (wherein R ³ is an alkylene group having 2 to 30 carbon atoms, R ⁴ is a hydrogen atom, carbon It is a group selected from an alkyl group having 1 to 30 atoms or an organic group represented by-(OC) -R ⁵ (R ⁵ is an alkyl group having 1 to 30 carbon atoms), A is a hydroxyl group, R ¹ And the same or different groups selected from R ² ,
a and b are 1 ≦ a ≦ 50 and 0 ≦ b ≦ 50, respectively, and 10 ≦ a + b ≦ 100, and m and n are 100 ≦ m ≦ 500 and 0 ≦ n ≦ 40, respectively. For n = 0, at least one of A is ^{R 2.} 0.9-90 parts by mass,
(B) 0.6 to 120 parts by mass of one or more surfactants (excluding those corresponding to component (a)) and (c-1) one to more than 0 to 150 parts by mass of an oil agent in advance Emulsifiable composition (P) obtained by mixing uniformly,
(C-2) one or more oil agents,
(E) One or more types of lipophilic cosmetic raw materials and (f) water are mixed, The method for producing an oil-in-water emulsion cosmetic according to [1].
[8] (d) 100 parts by weight of one or more hydrophilic alcohols having at least one hydroxyl group in the molecule and being liquid at room temperature;
(A) Polyoxyalkylene-modified diorganopolysiloxane represented by the average structural formula (1)

(In the formula, R ¹ is a monovalent hydrocarbon group or a monovalent substituted hydrocarbon group (excluding those corresponding to R ² ), and R ² is represented by the general formula (2): —R ³ —O— ( C ₂ H ₄ O) _a (C ₃ H ₆ O) _b R ⁴ polyoxyalkylene group (wherein R ³ is an alkylene group having 2 to 30 carbon atoms, R ⁴ is a hydrogen atom, carbon It is a group selected from an alkyl group having 1 to 30 atoms or an organic group represented by-(OC) -R ⁵ (R ⁵ is an alkyl group having 1 to 30 carbon atoms), A is a hydroxyl group, R ¹ And the same or different groups selected from R ² ,
a and b are 1 ≦ a ≦ 50 and 0 ≦ b ≦ 50, respectively, and 10 ≦ a + b ≦ 100, and m and n are 100 ≦ m ≦ 500 and 0 ≦ n ≦ 40, respectively. For n = 0, at least one of A is ^{R 2.} 0.9-90 parts by mass,
(B) 0.6 to 120 parts by mass of one or more surfactants (excluding those corresponding to component (a)) and (c-1) one to more than 0 to 150 parts by mass of an oil agent in advance Emulsifiable composition (P) obtained by mixing uniformly,
(C-2) one or more oil agents,
(E) one or more lipophilic cosmetic ingredients,
(F) Water and (g) One or more types of water-soluble polymers are mixed, The method for producing an oil-in-water emulsion cosmetic according to [2].
[9] Component (c-2) 10 to 300 parts by mass, component (e) 10 to 300 parts by mass and component (f) 100 to 2,000 parts by mass per 100 parts by mass of the emulsifiable composition (P). The method for producing an oil-in-water emulsion cosmetic according to [7], wherein
[10] The method for producing an oil-in-water emulsion cosmetic according to [7] or [8], wherein the component (e) is a lipophilic cosmetic raw material containing at least one ultraviolet protection component .
[10-1] Component (e) is at least one organic ultraviolet protection component, and is produced by mixing (f) water and (g) one or more water-soluble polymers. The method for producing an oil-in-water emulsion cosmetic according to [8], which is a method for producing a sunscreen cosmetic.
[10-2] A sunscreen cosmetic characterized in that component (e) is at least one inorganic ultraviolet protection component, and (f) is produced by mixing water and a water-swellable clay mineral. The method for producing an oil-in-water emulsion cosmetic according to [7] or [8], which is a production method.
[11] [7] or [8], wherein the component (b) comprises (b1) one or more ionic surfactants and (b2) one or more nonionic surfactants Of producing an oil-in-water emulsion cosmetic.
[12] The component (b) is a polyoxyalkylene-modified diorganopolysiloxane (however, the degree of polymerization of the diorganopolysiloxane portion is smaller than that of the component (a) and the HLB is 3 to 10), polyoxyalkylene alkyl ether , Sorbitan fatty acid ester, polyoxyalkylene sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, and one or more nonionic surfactants selected from the group consisting of polyoxyalkylene fatty acid ester, [7] The method for producing an oil-in-water emulsion cosmetic according to [8].
[13] The method according to any one of [7] to [12], which is a method for producing an oil-in-water emulsion cosmetic having an average particle size of 0.50 to 10.0 μm measured using a transmission microscope. A method for producing an oil-in-water emulsion cosmetic. ".

In the oil-in-water emulsion cosmetic according to the present invention, the oil agent and the lipophilic cosmetic material are uniformly and stably emulsified or dispersed in water, and are excellent in aging stability, feeling of use, appearance of the product, and the like. Similarly, in the oil-in-water emulsion cosmetic of the present invention, an oil agent, a lipophilic cosmetic raw material, and a hydrophilic polymer component are uniformly or stably emulsified or dispersed in water, and the use feeling and the like are excellent. Further, according to the method for producing an oil-in-water emulsion cosmetic according to the present invention, the above components can be emulsified in water by a simple stirring device and a mixing device without using a special emulsifying device, It is possible to easily produce an oil-in-water emulsion cosmetic with a fine particle size that is excellent in feeling of use and product appearance. In particular, by using the method for producing an oil-in-water emulsion cosmetic according to the present invention, it is possible to investigate the optimization of emulsification conditions for UV protection components, oil agents (especially silicone oil) and hydrophilic polymer components that are generally difficult to emulsify. Easily and stably emulsified with almost no need, easy to produce sunscreen cosmetics with high UV protection index (hereinafter referred to as SPF), excellent aging stability, feeling of use, product appearance, etc. can do.

（式中、Ｒ^１は一価炭化水素基または一価置換炭化水素基（ただし、Ｒ^２に該当するものを除く）であり、Ｒ^２は一般式（２）：−Ｒ^３−Ｏ−（Ｃ_２Ｈ_４Ｏ）_ａ（Ｃ_３Ｈ_６Ｏ）_ｂＲ^４で示されるポリオキシアルキレン基（式中、Ｒ^３は炭素原子数２〜３０のアルキレン基であり、Ｒ^４は水素原子，炭素原子数１〜３０のアルキル基または−（ＯＣ）−Ｒ^５で表される有機基（Ｒ^５は炭素原子数１〜３０のアルキル基）から選択される基であり、Ａは水酸基、Ｒ^１およびＲ^２から選択される同一または異種の基であり、
ａ、ｂはそれぞれ１≦ａ≦５０、０≦ｂ≦５０であり、かつ１０≦ａ＋ｂ≦１００であり、ｍ，ｎはそれぞれ１００≦ｍ≦５００、０≦ｎ≦４０である。ｎ＝０の場合、Ａの少なくとも一方はＲ^２である。）、
（ｂ）１種類以上の界面活性剤（ただし、成分（ａ）に該当するものを除く）、
（ｃ）１種類以上の油剤、
（ｄ）分子中に少なくとも1個の水酸基を有し、室温で液状である１種類以上の親水性アルコール類、
（ｅ）１種類以上の親油性化粧品原料 および
（ｆ）水 を含んでなることを特徴とし、好ましくは、さらに（ｇ）水溶性ポリマー を含んでなることを特徴とする。 The oil-in-water emulsion cosmetic of the present invention comprises (a) a polyoxyalkylene-modified diorganopolysiloxane represented by an average structural formula (1)

(In the formula, R ¹ is a monovalent hydrocarbon group or a monovalent substituted hydrocarbon group (excluding those corresponding to R ² ), and R ² is represented by the general formula (2): —R ³ —O— ( C ₂ H ₄ O) _a (C ₃ H ₆ O) _b R ⁴ polyoxyalkylene group (wherein R ³ is an alkylene group having 2 to 30 carbon atoms, R ⁴ is a hydrogen atom, carbon It is a group selected from an alkyl group having 1 to 30 atoms or an organic group represented by-(OC) -R ⁵ (R ⁵ is an alkyl group having 1 to 30 carbon atoms), A is a hydroxyl group, R ¹ And the same or different groups selected from R ² ,
a and b are 1 ≦ a ≦ 50 and 0 ≦ b ≦ 50, respectively, and 10 ≦ a + b ≦ 100, and m and n are 100 ≦ m ≦ 500 and 0 ≦ n ≦ 40, respectively. For n = 0, at least one of A is ^{R 2.} ),
(B) one or more surfactants (except for those corresponding to component (a)),
(C) one or more oil agents;
(D) one or more hydrophilic alcohols having at least one hydroxyl group in the molecule and being liquid at room temperature,
It is characterized by comprising (e) one or more lipophilic cosmetic raw materials and (f) water, preferably further comprising (g) a water-soluble polymer.

The polyoxyalkylene-modified diorganopolysiloxane of component (a) has a hydrophobic, lipophilic diorganosiloxane unit of (R ¹ ) ₂ SiO units of 100 to 500, and is a hydrophilic group R ^2. So it is a surfactant. The HLB is not particularly limited, but is usually 5th to 13th. In the oil-in-water emulsion cosmetic, the polyoxyalkylene-modified diorganopolysiloxane of component (a) is one or more surfactants that are component (b), and one or more oil agents that are component (c) In addition, the component (d) has at least one hydroxyl group in the molecule and is compatible with one or more hydrophilic alcohols that are liquid at room temperature. In preparing an oil-in-water emulsion cosmetic by mixing the above components (a) to (e) with (f) water and emulsifying the components (c) and (e) in water. In combination with the component (b) and the component (d), the emulsification / dispersion of the component (c) and the component (e) in water is promoted, and uniform emulsification dispersion without using a special emulsifier The state can be realized, and the obtained oil-in-water emulsion cosmetic has an effect of imparting stability over time and a uniform appearance.

式中、Ｒ^１は非置換または置換一価炭化水素基（ただし、Ｒ^２に該当するものを除く）である。非置換の一価炭化水素基としては、メチル基、エチル基、プロピル基等のアルキル基；フェニル基、トリル基、キシリル基等のアリール基；アラルキル基が例示される。置換一価炭化水素基としては、３，３，３−トリフロロプロピル基、３，３，４，４，４−ペンタフロロブチル基などのパーフルオロアルキル基；メトキシカルボニルプロピル基、エトキシカルボニルプロピル基等のアルコキシカルボニルアルキル基；アセトキシプロピル基、プロピオノキシプロピル基等のアルキルカルボニルオキシアルキル基；エトキシエチル基等のアルコキシアルキル基；３−アミノプロピル基、３−（アミノエチル）アミノプロピル基等のアミノアルキル基；アルキルアミノカルボニルアルキル基、アルキルカルボニルアミノアルキル基が例示される。なお、Ｒ^２に該当するものは、上記置換一価炭化水素基から除かれる。ケイ素原子結合Ｒ^１の一部、特に分子鎖末端のＲ^１の一部がアルコキシ基で置換されていてもよく、アルコキシ基としては、メトキシ基、エトキシ基、プロポキシ基が例示される。
Ｒ^１は、これらの中でも非置換の一価炭化水素基が好ましく、そのうちでもアルキル基が好ましく、特にメチル基が好ましい。 The polyoxyalkylene-modified diorganopolysiloxane that is component (a) is represented by the following average structural formula (1):

In the formula, R ¹ is an unsubstituted or substituted monovalent hydrocarbon group (except for those corresponding to R ² ). Examples of the unsubstituted monovalent hydrocarbon group include alkyl groups such as methyl group, ethyl group, and propyl group; aryl groups such as phenyl group, tolyl group, and xylyl group; and aralkyl groups. Examples of substituted monovalent hydrocarbon groups include perfluoroalkyl groups such as 3,3,3-trifluoropropyl group and 3,3,4,4,4-pentafluorobutyl group; methoxycarbonylpropyl group, ethoxycarbonylpropyl group Alkoxycarbonylalkyl groups such as acetoxypropyl group, propionoxypropyl group, etc .; alkoxycarbonyl groups such as ethoxyethyl group; 3-aminopropyl group, 3- (aminoethyl) aminopropyl group, etc. An aminoalkyl group; an alkylaminocarbonylalkyl group and an alkylcarbonylaminoalkyl group are exemplified. Those corresponding to R ² are excluded from the substituted monovalent hydrocarbon group. Some of the silicon-bonded R ^1, may be especially a part of R ¹ at the molecular chain terminals substituted by alkoxy groups, the alkoxy group, methoxy group, an ethoxy group, a propoxy group and the like.
Among these, R ¹ is preferably an unsubstituted monovalent hydrocarbon group, among which an alkyl group is preferable, and a methyl group is particularly preferable.

上記式中、Ｒ^１はメチル基がベストであるが、分子中のＲ^１の一部が上記のメチル基以外の非置換一価炭化水素基（例えば、メチル基以外のアルキル基、フェニル基）あるいは置換一価炭化水素基（例えば、パーフルオロアルキル基、アルコキシカルボニルアルキル基、アルキルカルボニルオキシアルキル基、アルコキシアルキル基などの疎水性有機基）であるものも好ましい。 Among those represented by the average structural formula (1), those represented by the following average structural formula (1-1) are preferable in view of characteristics and ease of synthesis.

In the above formula, but R ¹ is best methyl group, an unsubstituted monovalent hydrocarbon groups in which some of R ¹ is other than methyl group in the above molecule (e.g., an alkyl group other than methyl group, a phenyl group) Alternatively, those that are substituted monovalent hydrocarbon groups (for example, hydrophobic organic groups such as perfluoroalkyl groups, alkoxycarbonylalkyl groups, alkylcarbonyloxyalkyl groups, and alkoxyalkyl groups) are also preferred.

In the average structural formula (1) and the average structural formula (1-1), R ² is represented by the general formula (2): —R ³ —O— (C ₂ H ₄ O) _a (C ₃ H ₆ O) _b R ⁴ (Wherein R ³ is an alkylene group having 2 to 30 carbon atoms, R ⁴ is a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, and the formula — (OC) —R ⁵ ). A group selected from the group consisting of an organic group represented by the formula (R ⁵ is an alkyl group having 1 to 30 carbon atoms): R ⁴ is preferably a hydrogen atom in view of characteristics, and the alkylene group is R ³ Preferably has 2 to 6 carbon atoms, particularly preferably 3 or 4. The alkyl group which is R ⁴ or R ⁵ preferably has 1 to 8 carbon atoms.

a and b are 0 ≦ a ≦ 50, 0 ≦ b ≦ 50, and 10 ≦ a + b ≦ 100, respectively, and preferably 30 to 50. A is a hydroxyl group, the same or different group selected from R ¹ and R ² . m and n are 100 ≦ m ≦ 500 and 0 ≦ n ≦ 40, respectively. When n = 0, at least one of A is R ² , but both are preferably R ² . m is preferably from 100 to 400, and n is preferably from 0 to 20. m / n is preferably 5 ≦ m / n ≦ 50. When the value of m + n exceeds the above upper limit, the viscosity increases too much and the handling property is lowered. When the value of a + b is less than the lower limit, the emulsifying ability is lowered, and those exceeding the upper limit are not easily manufactured. Moreover, the daily stability of the oil-in-water emulsion cosmetics obtained as the value of m is less than the said minimum will fall.

In the average structural formula (1) and the average structural formula (1-1), the arrangement of each siloxane unit is not limited, and may be random, block, or a mixture of random and block. It is. _{- (C 2 H 4 O)} a (C 3 H 6 O) b - The same applies to.

The average molecular weight of component (a) is preferably 10,000 to 80,000, more preferably 20,000 to 60,000. When the molecular weight is too small, the daily stability of the cosmetic is lowered, and when it is too large, the feeling of use tends to be lowered. Further, the viscosity of the component (a) is not particularly limited, but from the viewpoint of forming a cosmetic having excellent stability over time and smooth feeling using the composition for producing a cosmetic of the present invention, the component ( The viscosity at 25 ° C. when a) is a 50% by weight solution of dipropylene glycol is preferably in the range of 500 to 100,000 mPa · s, and preferably in the range of 1,000 to 60,000 mPa · s. More preferred.

なお、成分（ａ）は、シロキサン単位、その重合度、ケイ素原子結合置換基、ポリオキシアルキレン基、その末端封鎖基等の異なる分子２種以上を併用してもよい。 Specifically, the polyoxyalkylene-modified diorganopolysiloxane represented by the average structural formula (1) and the average structural formula (1-1) is a group of diorganopolysiloxanes represented by the following average structural formula. Illustrated. In the formula, m, n, a and b satisfy the above numerical range.

In addition, component (a) may use together 2 or more types of different molecules, such as a siloxane unit, its polymerization degree, a silicon atom bond substituent, a polyoxyalkylene group, and its terminal blocking group.

（式中、Ｒ^１は一価炭化水素基または一価置換炭化水素基（ただし、Ｒ^２に該当するものを除く）であり、末端のＹはＲ^１、水酸基およびアルコキシ基から選択される同一または異種の基であり、ｍ，ｎはそれぞれ１００≦ｍ≦５００、０≦ｎ≦４０である。ｎ＝０の場合、分子鎖末端のＹの少なくとも１個は水素原子である。）と
(Ｂ) 一般式（５）：Ｒ^６−Ｏ−（Ｃ_２Ｈ_４Ｏ）_ａ（Ｃ_３Ｈ_６Ｏ）_ｂＲ^４
で示される末端アルケニル基を有するポリオキシアルキレン化合物（式中、Ｒ^４は水素原子，炭素原子数１〜３０のアルキル基または式−（ＯＣ）−Ｒ^５で表される有機基（Ｒ^５は炭素原子数１〜３０のアルキル基）から選択される基であり、Ｒ^６は炭素原子数２〜３０のアルケニル基である。）を、(Ｃ)公知のヒドロシリル化反応用触媒の存在下、ヒドロシリル化反応する方法が挙げられる。なお、上記のケイ素原子結合水素原子を有する直鎖状オルガノポリシロキサンは、通常平衡化重合方法で製造される。 The method for producing the polymer polyoxyalkylene-modified diorganopolysiloxane represented by the average structural formula (1) is not limited. For example, (A) a silicon-bonded hydrogen atom having the following average structural formula (5) Linear organopolysiloxane having

(Wherein R ¹ is a monovalent hydrocarbon group or a monovalent substituted hydrocarbon group (excluding those corresponding to R ² ), and the terminal Y is the same selected from R ¹ , a hydroxyl group and an alkoxy group) Or m and n are 100 ≦ m ≦ 500 and 0 ≦ n ≦ 40, respectively, and when n = 0, at least one Y at the molecular chain end is a hydrogen atom.
(B) the general formula _{^{(5): R 6 -O- (}} C 2 H 4 O) a (C 3 H 6 O) b R 4
A polyoxyalkylene compound having a terminal alkenyl group represented by the formula (wherein R ⁴ represents a hydrogen atom, an alkyl group having 1 to 30 carbon atoms, or an organic group represented by the formula — (OC) —R ⁵ (R ⁵ represents R ⁶ is an alkenyl group having 2 to 30 carbon atoms)) (C) in the presence of a known hydrosilylation reaction catalyst, The method of hydrosilylation reaction is mentioned. The linear organopolysiloxane having a silicon atom-bonded hydrogen atom is usually produced by an equilibration polymerization method.

In the above hydrosilylation reaction, an organic solvent may be used. When using organic solvents, alcohol solvents such as isopropyl alcohol; aromatic hydrocarbon solvents such as toluene and xylene; ether solvents such as dioxane and THF; aliphatic hydrocarbon solvents and carboxylic acid ester solvents It is preferable to use a ketone solvent or a chlorinated hydrocarbon solvent.

When these organic solvents are used, the organic solvent is distilled off by adding a non-volatile diluent such as dipropylene glycol and stripping under reduced pressure after the hydrosilylation reaction. Is preferred. This is for preventing cosmetics, particularly skin cosmetics, from containing an organic solvent other than alcohol solvents. In the hydrosilylation reaction method described above, the reaction temperature is not limited, but it is usually preferably within the range of 50 to 150 ° C.

In the oil-in-water emulsion cosmetic of the present invention, the hydrosilylation reaction for producing the component (a) may be followed by non-bromination by removing allyl ether groups with an acidic substance or alkylating with a hydrogenation reaction. Similarly, tocopherol or BHT may be added as an antioxidant to the obtained polyoxyalkylene-modified diorganopolysiloxane for the purpose of low bromide or oxidation.

The one or more surfactants as component (b) have at least one hydroxyl group in the molecule as component (a) and polyoxyalkylene-modified diorganopolysiloxane as component (a) at room temperature. It is a component that has good compatibility with one or more types of hydrophilic alcohols that are liquid and promotes emulsification and dispersion of component (c) and component (e) in water. In the present invention, by using these components (a), (b) and (e) in combination, the component (c) and the component (e) form a uniform emulsified dispersion state without using a special emulsifier. In addition, an oil-in-water emulsion cosmetic having stability over time and a uniform appearance can be obtained.

(B) One or more kinds of surfactants are not particularly limited as long as they are not applicable to the component (a) and are usually used in cosmetics, particularly oil-in-water emulsion cosmetics. These include ionic surfactants, nonionic surfactants, and combinations of ionic surfactants and nonionic surfactants. In the present invention, in order to obtain the stability over time and the uniform emulsified state of the oil-in-water emulsion cosmetic, (b1) one or more kinds of nonionic surfactants (except those corresponding to the component (a)) Use is preferable, and (b2) combined use with one or more ionic surfactants is also preferable.

(B1) One or more types of nonionic surfactants are nonionic surfactants except those corresponding to component (a). Polyoxyalkylene ethers, polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters as nonionic surfactants suitable for the oil-in-water emulsion cosmetic of the present invention (excluding those corresponding to component (a)) , Polyoxyalkylene fatty acid diesters, polyoxyalkylene resin acid esters, polyoxyalkylene (cured) castor oil, polyoxyalkylene alkylphenols, polyoxyalkylene alkylphenyl ethers, polyoxyalkylene phenyl ethers, polyoxyalkylene Alkyl esters, polyoxyalkylene alkyl esters, sorbitan fatty acid esters, polyoxyalkylene sorbitan alkyl esters, polyoxyalkylene sorbitan fatty acid esters, Reoxyalkylene sorbite fatty acid esters, polyoxyalkylene glycerin fatty acid esters, polyglycerin alkyl ethers, polyglycerin fatty acid esters, sucrose fatty acid esters, fatty acid alkanolamides, alkyl glucosides, polyoxyalkylene fatty acid bisphenyl ethers , Polypropylene glycol, polyether-modified silicone, that is, polyoxyalkylene-modified diorganopolysiloxane (excluding those corresponding to component (a)), polyglyceryl-modified silicone, glyceryl-modified silicone, sugar-modified silicone, perfluoropolyether interface Activator, polyoxyethylene / polyoxypropylene block copolymer, alkyl polyoxyethylene / polyoxypropylene block copolymer Chromatography ether are exemplified.

The component (b1) is preferably a polyoxyalkylene alkyl ether or a polyoxyalkylene fatty acid ester from the viewpoint of the stability of the cosmetic and the feeling of use. In addition, in order to improve the daily stability of oil-in-water emulsion cosmetics, polyether-modified silicones, that is, polyoxyalkylene-modified diorganopolysiloxanes (except those corresponding to component (a)), polyglyceryl-modified silicones, Glyceryl modified silicone or sugar modified silicone is preferred. Since these modified silicones have the same diorganopolysiloxane skeleton as the component (a), the combined use with the component (a) has an advantage of improving the daily stability of the oil-in-water emulsion cosmetic in particular.

（式中、Ｒ^１は一価炭化水素基または一価置換炭化水素基（ただし、Ｒ^６に該当するものを除く）であり、Ｒ^６は一般式：−Ｒ^７−Ｏ−（Ｃ_２Ｈ_４Ｏ）_ｄ（Ｃ_３Ｈ_６Ｏ）_ｅＲ^８ （４）で示されるポリオキシアルキレン基（式中、Ｒ^７は炭素原子数２〜８のアルキレン基であり、Ｒ^８は水素原子，炭素原子数１〜１２のアルキル基または−（ＯＣ）−Ｒ^９で表される有機基（Ｒ^９は炭素原子数１〜１２のアルキル基）から選択される基であり、ｄ，ｅはそれぞれ１≦ｄ≦２０、０≦ｅ≦２０であり、かつ５≦ｄ＋ｅの整数であり、Ｂは水酸基、Ｒ^１およびＲ^６から選択される同一または異種の基であり、ｐ，ｑはそれぞれ０≦ｐ≦９０、０≦ｑ≦１０である。ｑ＝０の場合、Ｂの少なくとも一方はＲ^６である。） In particular, the polyoxyalkylene-modified diorganopolysiloxane represented by the following average structural formula (3) is preferable from the viewpoint of the day-to-day stability of the oil-in-water emulsion cosmetic.

(In the formula, R ¹ is a monovalent hydrocarbon group or a monovalent substituted hydrocarbon group (excluding those corresponding to R ⁶ ), and R ⁶ is represented by the general formula: —R ⁷ —O— (C ₂ H ₄ O) _d (C ₃ H ₆ O) _e R ⁸ (4) polyoxyalkylene group (wherein R ⁷ is an alkylene group having 2 to 8 carbon atoms, R ⁸ is a hydrogen atom, carbon It is a group selected from an alkyl group having 1 to 12 atoms or an organic group represented by-(OC) -R ⁹ (R ⁹ is an alkyl group having 1 to 12 carbon atoms), and d and e are each 1 ≦ d ≦ 20, 0 ≦ e ≦ 20, and 5 ≦ d + e, B is a hydroxyl group, the same or different groups selected from R ¹ and R ⁶ , and p and q are 0 ≦ p ≦ 90, 0 ≦ q ≦ 10, and when q = 0, at least one of B is R ⁶ )

In the formula, R ¹ is a substituted or unsubstituted monovalent hydrocarbon group (except for those corresponding to R ⁶ ), and examples of the unsubstituted monovalent hydrocarbon group include a methyl group, an ethyl group, and a propyl group. An aryl group such as a phenyl group, a tolyl group, and a xylyl group; and an aralkyl group. Examples of substituted monovalent hydrocarbon groups include perfluoroalkyl groups such as 3,3,3-trifluoropropyl group and 3,3,4,4,4-pentafluorobutyl group; methoxycarbonylpropyl group, ethoxycarbonylpropyl group Alkoxycarbonylalkyl groups such as acetoxypropyl group, propionoxypropyl group, etc .; alkoxycarbonyl groups such as ethoxyethyl group; 3-aminopropyl group, 3- (aminoethyl) aminopropyl group, etc. Aminoalkyl groups; amidoalkyl groups such as acetylaminoalkyl groups (excluding those corresponding to R ² ) are exemplified. A part of R ¹ may be substituted with an alkoxy group, and examples of the alkoxy group include a methoxy group, an ethoxy group, and a propoxy group. Among these, R ¹ is preferably an unsubstituted monovalent hydrocarbon group, more preferably an alkyl group, and particularly preferably a methyl group.

Ｒ^１は上記どおりである。
Ｒ^６は一般式（６）：−Ｒ^３−Ｏ−（Ｃ_２Ｈ_４Ｏ）_ｄ（Ｃ_３Ｈ_６Ｏ）_ｅＲ^４ で示されるポリオキシアルキレン基（式中、Ｒ^３は炭素原子数２〜８のアルキレン基であり、Ｒ^４は水素原子，炭素原子数１〜１２のアルキル基または−（ＯＣ）−Ｒ^５で表される有機基（Ｒ^５は炭素原子数１〜１２のアルキル基）から選択される基であるが、界面活性の点で水素原子が好ましい。該アルキレン基は炭素原子数２〜６が好ましく、３または４が特に好ましい。Ｒ^５であるアルキル基は、炭素原子数１〜８が好ましい。 Of the average structural formula (3), polyoxyalkylene-modified diorganopolysiloxane represented by the following average structural formula (3-1) is preferable.

R ¹ is as described above.
R ⁶ is a polyoxyalkylene group represented by the general formula (6): —R ³ —O— (C ₂ H ₄ O) _d (C ₃ H ₆ O) _e R ⁴ (wherein R ³ is the number of carbon atoms) R ⁴ is a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or an organic group represented by — (OC) —R ⁵ (R ⁵ is an alkyl group having 1 to 12 carbon atoms). Group is preferably a hydrogen atom in terms of surface activity, the alkylene group preferably has 2 to 6 carbon atoms, particularly preferably 3 or 4. The alkyl group represented by R ⁵ is a carbon atom. The number of atoms is preferably 1-8.

d and e are integers of 1 ≦ d ≦ 20 and 0 ≦ e ≦ 20 and 5 ≦ d + e ≦ 40, respectively, and 8 to 20 are preferable. B is a hydroxyl group, the same or different groups selected from R ¹ and R ⁶ , and p and q are 0 ≦ p ≦ 90 and 0 ≦ q ≦ 10, respectively. p is preferably 50 to 80, and q is preferably 0 to 5. However, when q = 0, at least one of B is R ⁶ , but both are preferably R ⁶ .
When each value of d, e, p, q exceeds the above upper limit, it may be indistinguishable from the component (a), and when the cosmetic preparation composition of the present invention is mixed with water and emulsified, The emulsifying power is reduced, and the stability over time of the obtained emulsion cosmetic is reduced.
In the average structural formula (3) and the average structural formula (3-1), the arrangement of each siloxane unit is not limited, and may be random, block, or a mixture of random and block. It is. _{- (C 2 H 4 O)} d (C 3 H 6 O) e - The same applies to.

The polyoxyalkylene-modified diorganopolysiloxane represented by the average structural formula (3) and the average structural formula (3-1) has a low degree of polymerization in the diorganopolysiloxane portion compared to the component (a), The maximum degree of polymerization of the oxyalkylene group is smaller than the maximum degree of polymerization of the polyoxyalkylene group in component (a). The polyoxyalkylene-modified diorganopolysiloxane represented by the average structural formula (3) and the average structural formula (3-1) preferably has a hydrophilic / lipophilic balance HLB in the range of 3 to 10. More preferably, it is in the range of -8. By using the polyoxyalkylene-modified diorganopolysiloxane having a low polymerization degree and an HLB in the range of 3 to 8 together with the component (a) and the component (e), the stability over time of the oil-in-water emulsion cosmetic can be improved. Can be improved.

(B2) One or more types of ionic surfactants include anionic surfactants, cationic surfactants, and amphoteric surfactants. In the present invention, (b1) one or more nonionic surfactants, particularly preferably a silicone-based diorganopolysiloxane having a low degree of polymerization and a polyoxyalkylene-modified diorganopolysiloxane having an HLB in the range of 3-8. It is preferable to use a nonionic surfactant and (b2) one or more ionic surfactants in combination.

Anionic surfactants include saturated or unsaturated higher fatty acid salts (for example, sodium laurate, sodium stearate, sodium oleate, sodium linolenate, etc.), long-chain alkyl sulfates, alkyl benzene sulfonic acids (for example, hexyl benzene sulfone) Acid, octylbenzenesulfonic acid, dodecylbenzenesulfonic acid, etc.) and salts thereof, polyoxyalkylene alkyl ether sulfate, polyoxyalkylene alkenyl ether sulfate, polyoxyethylene alkyl sulfate ester, sulfosuccinic acid alkyl ester salt, polyoxyalkylene Sulfosuccinate, polyoxyalkylene sulfosuccinic acid alkyl ester salt, polyoxyalkylene-modified dimethyl polysiloxane sulfosuccinic acid ester alkali metal salt, poly Xylalkylene alkyl phenyl ether sulfate, long chain alkane sulfonate, long chain alkyl sulfonate, polyoxyethylene alkyl phenyl ether sulfate, polyoxyalkylene alkyl ether acetate, long chain alkyl phosphate, polyoxyalkylene alkyl ether phosphorus Acid salt, acyl glutamate, α-acyl sulfonate, long chain alkyl sulfonate, alkyl allyl sulfonate, long chain α-olefin sulfonate, alkyl naphthalene sulfonate, long chain alkane sulfonate, long Chain alkyl or alkenyl sulfate, long chain alkyl amide sulfate, long chain alkyl or alkenyl phosphate, alkyl amide phosphate, alkyloyl alkyl taurine salt, N-acyl amino acid salt, sulfosuccinate, alkyl alkyl amine Rukarubon salt, amide ether carboxylates, alpha-sulfo fatty acid ester salts, alanine derivatives, glycine derivatives, arginine derivatives and the like. Examples of the salt include alkali metal salts such as sodium salt and potassium salt, alkanolamine salts such as triethanolamine salt, and ammonium salt, and sodium salt is preferable.

As cationic surfactants, alkyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, tallow alkyl trimethyl ammonium chloride, behenyl trimethyl ammonium chloride, octyl trimethyl ammonium hydroxide, dodecyl trimethyl ammonium hydroxide, Stearyltrimethylammonium bromide, behenyltrimethylammonium bromide, distearyldimethylammonium chloride, dicocoyldimethylammonium chloride, dioctyldimethylammonium chloride, di (POE) oleylmethylammonium chloride (2EO), benzalkonium chloride, alkylbenzalkolo chloride Ni, alkyl dimethyl benzalkonium chloride, salt Benzethonium, stearyldimethylbenzylammonium chloride, lanolin-derived quaternary ammonium salt, diethylaminoethylamide stearate, dimethylaminopropylamide stearate, amidopropyldimethylhydroxypropylammonium chloride, stearoylcholaminoformylmethylpyridinium chloride, cetylpyridinium chloride, Examples include tall oil chloride alkylbenzyl hydroxyethyl imidazolinium, benzylammonium salt.

Examples of amphoteric surfactants include phospholipids, which are preferred. Examples of phospholipids include lecithin, phosphatidylethanolamine, phosphatidic acid, phosphatidylinositol, phosphatidylserine, phosphatidylcholine, phosphatidylglycerol, sphingomyelin, cardiolipin, and hydrogenated products thereof. . Hydrogenated natural lecithin obtained by hydrogenating soybean lecithin, egg yolk lecithin, corn lecithin, cottonseed oil lecithin, rapeseed lecithin and the like is particularly preferable.

(B1) Among these, the one or more ionic surfactants are preferably anionic surfactants from the viewpoint of cosmetic stability and feeling of use, and polyoxyalkylene alkyl ether phosphoric acid, Alkali metal salts (especially sodium salts and potassium salts) or polyoxyalkylene sulfosuccinates are preferred. In the present invention, it is particularly preferable to use an alkali metal salt of polyoxyalkylenesulfosuccinic acid (especially sodium salt or potassium salt) or a sulfosuccinic acid ester alkali metal salt of polyoxyalkylene-modified dimethylpolysiloxane, which has low odor and skin irritation. There is an advantage that an oil-in-water emulsion cosmetic with low properties can be prepared.

(C) One or more types of oil agents are animal oils, vegetable oils, synthetic oils and the like commonly used in cosmetics. As long as it is hydrophobic, it may be solid, semi-solid, or liquid regardless of origin, and may be non-volatile, semi-volatile, or volatile. Examples include hydrocarbons, fats and oils, waxes, hardened oils, ester oils, higher fatty acids, silicone oils, fluorine oils, and lanolin derivatives. Used to impart lubricity to the skin and hair, to soften the skin, and to give the skin a moist feeling.

Component (c) is preferably a silicone oil, of which volatile linear dimethylpolysiloxane, branched methylpolysiloxane and cyclic dimethylpolysiloxane are preferred, and the kinematic viscosity at 25 ° C. is 0.65 to 10,000 mm. ² / s molecular chain both ends trimethylsiloxy group-capped dimethylpolysiloxane, molecular chain both ends trimethylsiloxy group-capped methylphenyl polysiloxane, α, ω-dihydroxypolydimethylsiloxane, α, ω-dimethoxypolydimethylsiloxane, Decamethylcyclopentasiloxane (D5) is particularly preferred. When these silicone oils are contained in the oil-in-water emulsion cosmetic according to the present invention, the stability over time can be improved, and a refreshing feel peculiar to silicone oils can be realized.

As components (c) other than silicone oils, hydrocarbon oils such as squalane and paraffin, and fatty acid ester oils such as isononanoyl isononanoate are preferred. These may be used alone or in combination with the silicone oil. By using these hydrocarbon oils and fatty acid ester oils together with the silicone oils, in addition to the refreshing feel unique to silicone oils, it retains moisture on the skin and moisturizes the skin and hair with cosmetics. A feeling (also referred to as “moist feeling”) and a smooth feel can be imparted, and there is an advantage that the stability over time of the cosmetic is not impaired. Furthermore, the oil-in-water emulsion cosmetics containing these hydrocarbon oils and fatty acid ester oils and the silicone oil can apply these moisturizing ingredients in a more stable and uniform state on the skin or hair, The moisturizing effect on the skin of the ingredients is improved, and there is an advantage that it gives a smoother and moist feel compared to cosmetics containing only oils (hydrocarbon oils and fatty acid ester oils) other than silicone oil. .

In addition to the above, component (c), hydrocarbons, fats and oils, waxes, hardened oils, ester oils, higher fatty acids, silicone oils, fluorine-based oils, lanolin derivatives, all of these Two or more types may be used in combination. Further, two or more kinds of oil agents shown in the following specific examples may be used in combination. Hereinafter, oil agents that can be used in the present invention will be illustrated more specifically.

Silicone oils are hydrophobic as long as they are oils, and their molecular structure may be cyclic, linear or branched. The viscosity at 25 ° C., usually from 0.65~100,000mm ² / s, preferably a range of 0.65~10,000mm ² / s. Of course, it does not contain polyoxyalkylene-modified diorganopolysiloxanes such as component (a) and component (b1). Specifically, low-polymerization cyclic dimethylpolysiloxanes such as octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane; hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane, trimethylsiloxy group-blocked dimethylpolysiloxane at both ends , Both ends trimethylsiloxy group-blocked methylphenylpolysiloxane, both ends trimethylsiloxy group-blocked methylalkylpolysiloxane and other linear diorganopolysiloxanes, methyltristrimethylsiloxysilane, ethyltristrimethylsiloxysilane, propyltristrimethylsiloxysilane, Examples include branched organopolysiloxanes such as tetrakistrimethylsiloxysilane and phenyltristrimethylsiloxysilane. Sexual linear dimethylpolysiloxane, branched methylpolysiloxane and cyclic dimethylpolysiloxanes are preferred.

More specifically, as the cyclic organopolysiloxane, hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), dodecamethylcyclohexasiloxane (D6), 1, 1-diethylhexamethylcyclotetrasiloxane, phenylheptamethylcyclotetrasiloxane, 1,1-diphenylhexamethylcyclotetrasiloxane, 1,3,5,7-tetravinyltetramethylcyclotetrasiloxane, 1,3,5,7 -Tetramethylcyclotetrasiloxane, 1,3,5,7-tetracyclohexyltetramethylcyclotetrasiloxane, tris (3,3,3-trifluoropropyl) trimethylcyclotrisiloxane are exemplified. As the linear organopolysiloxane, trimethylsiloxy group-blocked dimethylpolysiloxane with molecular chain at both ends, trimethylsiloxy group-blocked methylphenylpolysiloxane with molecular chain at both ends, trimethylsiloxy group-blocked dimethylsiloxane / methylphenylsiloxane with molecular chain at both ends Combined, trimethylsiloxy group-capped dimethylsiloxane methyl (3,3,3-trifluoropropyl) siloxane copolymer, α, ω-dihydroxypolydimethylsiloxane, α, ω-dimethoxypolydimethylsiloxane, tetramethyl Examples include -1,3-dihydroxydisiloxane, octamethyl-1,7-dihydroxytetrasiloxane, hexamethyl-1,5-diethoxytrisiloxane, hexamethyldisiloxane, and octamethyltrisiloxane.

Of the components (c), the oils other than silicone oils are preferably liquid at 5 to 100 ° C. For example, ozokerite, squalane, squalene, ceresin, paraffin, paraffin wax, liquid paraffin, pristane, polyisobutylene, polybutene, microcrystalline wax, petroleum jelly etc. as hydrocarbon oils; avocado oil, linseed oil, almond oil, ibotarou as animal and vegetable oils , Eno oil, olive oil, cacao butter, kapok wax, kaya oil, carnauba wax, liver oil, candelilla wax, beef tallow, cow leg fat, beef bone fat, hardened beef tallow, kyounin oil, whale wax, hardened oil, wheat germ oil, sesame oil, Rice germ oil, rice bran oil, sugarcane wax, sasanqua oil, safflower oil, shea butter, cinnamon oil, cinnamon oil, jojoballow, shellac wax, turtle oil, mango butter, soybean oil, soybean wax, tea seed oil, camellia oil, Evening primrose oil, corn oil Lard, rapeseed oil, Japanese kiri oil, nukarou, germ oil, horse fat, persic oil, palm oil, palm kernel oil, castor oil, hydrogenated castor oil, castor oil fatty acid methyl ester, sunflower oil, grape oil, bayberry wax, jojoba Oil, macadamia nut oil, beeswax, mink oil, cottonseed oil, cotton wax, owl, owl kernel oil, montan wax, coconut oil, hardened coconut oil, tricoconut oil fatty acid glyceride, sheep oil, peanut oil, lanolin, liquid lanolin, reduced lanolin, lanolin Alcohol, hard lanolin, lanolin acetate, lanolin fatty acid isopropyl, hexyl laurate, POE lanolin alcohol ether, POE lanolin alcohol acetate, lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin alcohol ether, egg yolk oil, etc .; as higher alcohol Lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, hexadecyl alcohol, oleyl alcohol, isostearyl alcohol, hexyl decanol, octyldodecanol, cetostearyl alcohol, 2-decyltetradecinol, cholesterol, phytosterol, POE Cholesterol ether, monostearyl glycerin ether (batyl alcohol), monooleyl glyceryl ether (ceralkyl alcohol), etc .; As higher fatty acids, myristic acid, palmitic acid, which are linear or branched fatty acids having 11 to 30 carbon atoms, Stearic acid, behenic acid, isostearic acid, 18-methyleicosanoic acid, etc .; as ester oil, diisobutyl adipate, adip 2-hexyldecyl acrylate, di-2-heptylundecyl adipate, N-alkyl glycol monoisostearate, isocetyl isostearate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, 2-ethylhexane Cetyl acid, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octanoate, octyldodecyl gum ester, oleyl oleate, octyldodecyl oleate, decyl oleate, isononyl isononanoate, Neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, amyl acetate, ethyl acetate, butyl acetate, isocetyl stearate, butyl stearate, dii sebacate Propyl, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptylundecyl palmitate, cholesteryl 12-hydroxystearylate, dipentayl Erythritol fatty acid ester, isopropyl myristate, 2-ethylhexyl myristate, octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, N-lauroyl-L -Glutamic acid-2-octyldodecyl ester, diisostearyl malate, etc .; Examples of glyceride oil include acetoglyceryl, glyceryl triisooctanoate, tri Examples include glyceryl sostearate, glyceryl triisopalmitate, glyceryl tri (capryl / caprate), glyceryl monostearate, glyceryl di-2-heptylundecanoate, glyceryl trimyristate, diglyceryl myristate, and the like. .

(D) One or more hydrophilic alcohols having at least one hydroxyl group in the molecule and being liquid at room temperature have excellent compatibility with the components (a) and (b), and It is liquid at room temperature with excellent compatibility with water. By using the components together with the components (a) and (b), the emulsification / dispersion of the components (c) and (e) in water is promoted, and the oil-in-water emulsion is uniform and excellent in stability over time. Cosmetics can be obtained. In addition, since the oil-in-water emulsion cosmetic of the present invention is used for the human body, the component (d) is physiologically less irritating to the human body when formulated in cosmetics, specifically, It is preferable to have an effect that impairs the appearance and / or feel of the skin and hair and, in particular, has little or no influence on health when orally administered in a large amount.

Specifically, component (d) is a monovalent lower alcohol such as ethanol, n-propanol, isopropanol, or n-butanol; a dihydric alcohol such as 1,3-butylene glycol, ethylene glycol, or propylene glycol; Examples include polyalkylene glycols such as propylene glycol and polypropylene glycol; and polyhydric alcohols such as glycerin, diglycerin, trimethylolpropane, pentaerythritol, and sorbitol. Two or more of these can be used in combination. Most preferred as component (d) is ethanol. Moreover, ethanol and hydrophilic alcohols other than said ethanol can be mixed and used together by mass ratio of 5 / 5-9.9 / 0.1.

(E) One or more types of lipophilic cosmetic raw materials are hydrophobic and are cosmetic raw materials having excellent compatibility or dispersibility with respect to the component (c). Such a component is preferably a lipophilic cosmetic raw material that does not dissolve at all in water at room temperature or has a solubility of the component in 100 g of water of less than 1 wt%. In the oil-in-water emulsion cosmetic of the present invention, the component (e) is uniformly emulsified in water together with the component (c), and separation of the component from the oil-in-water emulsion cosmetic occurs over time. Has the advantage of not.

Specifically, as the component (e), one or more lipophilic substances selected from the group consisting of an ultraviolet protection component, a silicone that exhibits a gum shape at room temperature, a silicone resin, a silicone elastomer powder, a physiologically active component, a fragrance, and a pigment. Cosmetic raw materials are exemplified. In particular, when the component (b1) is a silicone-based nonionic surfactant, the component (e) is particularly preferably an ultraviolet protection component. Furthermore, as the component (e), lipophilic organically modified silicones that do not correspond to the above components (a) to (c) of the present invention are preferably exemplified.

The UV protection component includes an inorganic UV protection component and an organic UV protection component. If the oil-in-water emulsion cosmetic of the present invention is a sunscreen cosmetic, the component (e) is preferably a lipophilic cosmetic raw material containing at least one organic UV protection component.

The inorganic ultraviolet protection component may be formulated by blending the above inorganic powder pigment, metal powder pigment, etc. as an ultraviolet dispersant, such as titanium oxide, zinc oxide, cerium oxide, low-order titanium oxide, iron. Examples thereof include metal oxides such as doped titanium oxide, metal hydroxides such as iron hydroxide, plate-like iron oxide, metal flakes such as aluminum flakes, and ceramics such as silicon carbide. Among these, at least one selected from granular, plate-like, needle-like, or fibrous particulate metal oxides and particulate metal hydroxides having an average particle diameter in the range of 1 to 100 nm is particularly preferable. These powders are conventionally known surface treatments such as fluorine compound treatment (perfluoroalkyl phosphate treatment, perfluoroalkylsilane treatment, perfluoropolyether treatment, fluorosilicone treatment, fluorinated silicone resin treatment are preferred), silicone Treatment (methylhydrogenpolysiloxane treatment, dimethylpolysiloxane treatment, vapor phase tetramethyltetrahydrogencyclotetrasiloxane treatment is preferred), silicone resin treatment (trimethylsiloxysilicate treatment is preferred), pendant treatment (vapor phase silicone) A method of adding an alkyl chain after the treatment), silane coupling agent treatment, titanium coupling agent treatment, silane treatment (alkyl silane or alkylsilazane treatment is preferred), oil agent treatment, N-acylated lysine treatment , Preferably treated with polyacrylic acid, treated with metal soap (preferably stearic acid or myristic acid salt), treated with acrylic resin, treated with metal oxide, etc., preferably treated with a plurality of these treatments. . For example, the surface of fine particle titanium oxide is coated with a metal oxide such as silicon oxide or alumina, and then surface-treated with alkylsilane. The surface treatment amount is preferably in the range of 0.1 to 50 mass% in total with respect to the powder.

The organic UV protection component is a lipophilic UV protection component such as 4- (2-β-glucopyranosyloxy) propoxy-2-hydroxybenzophenone, dihydroxydimethoxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2, 2'-dihydroxy-4-methoxybenzophenone, 2,4-dihydroxybenzophenone, 2,2'4,4'-tetrahydroxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2-hydroxy-4 -Benzophenones such as N-octoxybenzophenone; 2-ethylhexyl paramethoxycinnamate (also known as octyl paramethoxycinnamate), glyceryl di-2-methoxyhexanoate mono-2-ethylhexanoate, 2,5-diisopropyl Methyl cinnamate, 2,4,6-tris [ -(2-ethylhexyloxycarbonyl) anilino] -1,3,5-triazine, methylbis (trimethylsiloxy) silylisopentyl trimethoxycinnamate, paramethoxycinnamate isopropyl diisopropylcinnamate ester mixture, p Cinnamate such as methoxyhydrocinnamic acid diethanolamine salt; benzoylmethane such as 2-phenyl-benzimidazole-5-sulfuric acid, 4-isopropyldibenzoylmethane, 4-tert-butyl-4'-methoxydibenzoylmethane 2-cyano-3,3-diphenylprop-2-enoic acid 2-ethylhexyl ester (also known as octocrylene), dimethoxybenzylidene dioxoimidazolidinepropionate 2-ethylhexyl, 1- (3,4-dimethoxyphenyl) ) -4,4-dimethyl-1 3-pentanedione, sinoxate, methyl-O-aminobenzoate, 2-ethylhexyl-2-cyano-3,3-diphenyl acrylate, 3- (4-methylbenzylidene) camphor, octyl triazone, 4- (3,4- Examples include dimethoxyphenylmethylene) -2,5-dioxo-1-imidazolidinepropionate 2-ethylhexyl, polymer derivatives thereof, and silane derivatives.

It is also possible to use a cosmetic raw material containing the organic ultraviolet protection component in a hydrophobic polymer powder as the component (e). The polymer powder may or may not be hollow, the average primary particle diameter may be in the range of 0.1 to 50 μm, and the particle size distribution may be broad or sharp. Examples of the polymer include acrylic resin, methacrylic resin, styrene resin, polyurethane resin, polyethylene, polypropylene, polyethylene terephthalate, silicone resin, nylon, acrylamide resin, and silylated polypeptide resin. A polymer powder containing an organic ultraviolet protection component in a range of 0.1 to 30% by mass is preferable, and a polymer powder containing 4-tert-butyl-4′-methoxydibenzoylmethane, which is a UV-A absorber, is particularly preferable. preferable.

In the oil-in-water emulsion cosmetic of the present invention, the ultraviolet protection component that can be suitably used as the component (e) is fine particle titanium oxide, fine particle zinc oxide, 2-ethylhexyl paramethoxycinnamate, 4-tert-butyl-4 ′. -At least one selected from the group consisting of methoxydibenzoylmethane and benzophenone ultraviolet absorbers. These UV protection components are widely used, are easily available, and have a high UV protection effect, so that they can be suitably used. In particular, it is preferable to use inorganic and organic UV protection components in combination, and it is more preferable to use UV protection components corresponding to UV-A and UV protection components in combination.

Gum-like silicone is a linear diorganopolysiloxane having a very high degree of polymerization, and is also referred to as silicone raw rubber or organopolysiloxane gum.
As a typical example, the general formula: R ⁴ (CH ₃ ) ₂ SiO {(CH ₃ ) ₂ SiO} _a {(CH ₃ ) R ³ SiO} _b Si (CH ₃ ) ₂ R ⁴ (wherein R ³ is vinyl) Group, phenyl group, alkyl group having 6 to 20 carbon atoms, aminoalkyl group having 3 to 15 carbon atoms, perfluoroalkyl group having 3 to 15 carbon atoms, quaternary ammonium base-containing alkyl group having 3 to 15 carbon atoms The terminal group R ⁴ is selected from an alkyl group having 1 to 8 carbon atoms, a phenyl group, a vinyl group, an aminoalkyl group having 3 to 15 carbon atoms, a hydroxyl group, and an alkoxy group having 1 to 8 carbon atoms. And a = 2,000 to 6,000, b = 0 to 1,000, a + b = 2,000 to 6,000).

The silicone resin is an organopolysiloxane having a highly branched structure, network structure, or cage structure, and is a liquid or solid at room temperature, and normally used in cosmetics unless it is contrary to the object of the present invention. Any one can be used.
Solid silicone resins include, for example, triorganosiloxy units (M units) (organo groups are only methyl groups, methyl groups and vinyl groups or phenyl groups), diorganosiloxy units (D units) (organo groups are Any of methyl group, methyl group and vinyl group or phenyl group), monoorganosiloxy unit (T unit) (organo group is methyl group, vinyl group or phenyl group) and siloxy unit (Q unit) There are MQ resin, MDQ resin, MTQ resin, MDTQ resin, TD resin, TQ resin, and TDQ resin made of a combination. Furthermore, trimethylsiloxysilicic acid, polyalkylsiloxysilicic acid, dimethylsiloxy unit-containing trimethylsiloxysilicic acid, and alkyl (perfluoroalkyl) siloxysilicic acid are exemplified. These silicone resins are oil-soluble, and those that can be dissolved in the component (c) octamethyltetrasiloxane (D4) or decamethylcyclopentasiloxane (D5) are particularly preferable.

Silicone elastomer powder is mainly a cross-linked product of linear diorganopolysiloxane, and can take various shapes such as spherical shape, flat shape, and irregular shape. It may have the form of an oil dispersion without having a shape. In the present invention, it is a silicone elastomer having a particle shape, and the primary particle diameter by observation using an electron microscope and / or the average primary particle diameter measured by a laser diffraction / scattering method is in the range of 0.1 to 50 μm. In addition, a silicone elastomer powder having a primary particle shape that is spherical is preferable. The silicone elastomer constituting the silicone elastomer powder preferably has a hardness of 80 or less, more preferably 65 or less according to JIS K 6253 “Method for testing hardness of vulcanized rubber and thermoplastic rubber” according to type A durometer.

Such silicone elastomer powders are disclosed in, for example, JP-A-2-243612, JP-A-8-12545, JP-A-8-12546, JP-A-8-12524, JP-A-9-241511, JP-A-9-241511. Examples thereof include those described in JP-A-10-36219, JP-A-11-193331, JP-A-2000-281523, and the like. Commercially available products include Trefil E-505, E-506, E-507, E-508 of Trefil E series manufactured by Toray Dow Corning Co., Ltd. . These silicone elastomer powders may be surface-treated, and examples of surface treatment agents include methyl hydrogen polysiloxane, silicone resin, metal soap, silane coupling agent, silica, inorganic oxides such as titanium oxide, Fluorine compounds such as perfluoroalkyl silane and perfluoroalkyl phosphate ester salts may be mentioned.

The silicone elastomer powder is preferably blended into the cosmetic in the form of a paste that is a kneaded product with an oil or an aqueous dispersion. More specifically, a paste-like product made by kneading a silicone elastomer powder and an oily component that is liquid at room temperature selected from the group consisting of ester oil, hydrocarbon oil, higher alcohol, vegetable oil and animal oil; silicone elastomer powder Examples thereof include those dispersed in water containing emulsifier by mechanical force. Of the cosmetic raw materials in which the silicone elastomer powder is dispersed in a medium, commercially available products such as “BY29-129” and “PF-2001 PIF Emulsion” manufactured by Toray Dow Corning Co., Ltd. can be used. Or the like. By blending an aqueous dispersion (= suspension) of these silicone elastomer powders, it is extremely useful in that the feeling of use of the oil-in-water emulsion cosmetic of the present invention can be further improved.

The physiologically active ingredient is a substance that imparts some physiological activity to the skin when applied to the skin and is lipophilic. For example, anti-inflammatory agent, anti-aging agent, squeeze agent, hair growth agent, hair restorer, moisturizer, blood circulation promoter, desiccant agent, cooling agent, warming agent, vitamins, amino acids, wound healing promoter, irritation relief Agents, analgesics, cell activators, enzyme components, etc. that are lipophilic. Among these, natural plant extract components, seaweed extract components, and herbal medicine components that are lipophilic are particularly preferable.

The fragrance is not particularly limited as long as it is a lipophilic fragrance. The fragrance is extracted from flowers, seeds, leaves, roots, and the like of various plants, the fragrance is extracted from seaweed, and each part or secretion of the animal. Examples include extracted fragrances (for example, pepper, sperm) and artificially synthesized fragrances (for example, menthol, musk, acetate ester, vanilla). A fragrance | flavor is mix | blended in order to provide a fragrance and fragrance to oil-in-water emulsion cosmetics, or to mask an unpleasant odor. Examples of pigments include oil-soluble dyes, extender pigments, inorganic pigments, organic pigments, and lipophilic fluorescent whitening agents. These lipophilic pigment components are emulsified or dispersed in a stable state in the oil-in-water emulsion cosmetic of the present invention, and uniform and beautiful coloring and coloring properties can be realized.

Furthermore, the lipophilic organic modified silicones which do not correspond to the above components (a) to (c) of the present invention are preferably exemplified as the component (e). Specifically, amino modified silicone, amino polyether modified silicone, epoxy modified silicone, carboxyl modified silicone, amino acid modified silicone, carbinol modified silicone, acrylic modified silicone, phenol modified silicone, amide alkyl modified silicone, amino glycol modified silicone, Mention may be made of alkoxy-modified silicones. The organically modified silicones may have, in addition to the polysiloxane bond as the main chain, an alkylene chain, an aminoalkylene chain or a polyether chain having a degree that the compound does not have hydrophilicity. , One or both of the side chain or terminal of the polysiloxane chain. When the oil-in-water emulsion cosmetic of the present invention is used as a hair cosmetic, amino-modified silicone, carbinol-modified silicone, aminopolyether-modified silicone or aminoglycol-modified silicone can be suitably used, and a 3-aminopropyl group An amino-modified silicone having a N- (2-aminoethyl) 3-aminopropyl group or the like can be exemplified as a general one.

(F) Water is a component that becomes a medium of the oil-in-water emulsion cosmetic, does not contain components harmful to the human body, and may be clean, and examples thereof include tap water, purified water, and mineral water. In addition, alcohols as component (d), particularly lower alcohols such as ethanol, have high flammability, but if water is contained, the flash point is lowered, and the safety during production, storage and transportation is high. Therefore, when producing the oil-in-water emulsion cosmetic of the present invention, the emulsifiable composition P can be prepared by mixing the components (a) to (d) and a small amount of water. In addition, other water-soluble components (particularly, (g) water-soluble polymer described later) can be dispersed in water in advance and blended in the oil-in-water emulsion cosmetic.

The oil-in-water emulsion cosmetic of the present invention comprises the above-described components (a) to (f), but has a fine particle diameter that is excellent in day-to-day stability, feeling of use, product appearance, and the like. In order to obtain an oil-type emulsion cosmetic, it is preferable to further comprise (g) a water-soluble polymer. It is also preferable to use a water-swellable clay mineral together with or in place of the water-soluble polymer. In particular, when an inorganic ultraviolet protective component is used in combination, it is preferable to use a water-swellable clay mineral because it can be blended more stably.

(G) The water-soluble polymer is blended for improving the viscosity of the oil-in-water emulsion cosmetic and improving the stability over time, and for improving the feeling of use. When used in combination with the components (a) to (f), the oily component (c) and the component (e) are more uniformly and stably dispersed in fine particles, and the water-soluble polymer itself is also dispersible. There is an advantage that it is improved and the sticky feel is alleviated.

The water-soluble polymer is preferably dissolved or dispersed in water to form a uniform aqueous solution or dispersion, and then blended into the oil-in-water emulsion cosmetic. Examples of the water-soluble polymer include amphoteric, cationic, anionic or nonionic water-soluble polymers. In addition, a water-soluble polymer and a water-swellable clay mineral may be used in combination, or two or more water-soluble polymers may be used in combination.

Examples of amphoteric water-soluble polymers include amphoteric starch, dimethyldiallylammonium chloride derivatives (for example, acrylamide / acrylic acid / dimethyldiallylammonium chloride copolymer, acrylic acid / dimethyldiallylammonium chloride copolymer), and methacrylic acid derivatives (for example, And polymethacryloylethyldimethylbetaine, N-methacryloyloxyethyl N, N-dimethylammonium-α-methylcarboxybetaine / alkyl methacrylate copolymer, etc.).

As cationic water-soluble polymers, quaternary nitrogen-modified polysaccharides (for example, cation-modified cellulose, cation-modified hydroxyethyl cellulose, cation-modified guar gum, cation-modified locust bean gum, cation-modified starch), dimethyldiallylammonium chloride derivatives (for example, , Dimethyldiallylammonium chloride / acrylamide copolymer, polydimethylmethylenepiperidinium chloride, etc.), vinylpyrrolidone derivatives (for example, vinylpyrrolidone / dimethylaminoethylmethacrylic acid copolymer salt, vinylpyrrolidone / methacrylamidopropyltrimethylammonium chloride) Polymer, vinylpyrrolidone / methylvinylimidazolium chloride copolymer, etc.), methacrylic acid derivatives (for example, methacryloylethyldimethylbenzene). IN chloride methacryloyloxyethyl trimethyl ammonium-2-hydroxyethyl methacrylate copolymer, methacryloyl ethyl dimethyl betaine chloride methacryloyloxyethyl trimethyl ammonium methacrylate methoxy polyethylene glycol copolymer) and the like.

As an anionic water-soluble polymer, polyacrylic acid or alkali metal salt thereof, polymethacrylic acid or alkali metal salt thereof, hyaluronic acid or alkali metal salt thereof, acetylated hyaluronic acid or alkali metal salt thereof, methyl vinyl ether / maleic anhydride Water-soluble polymer of aliphatic carboxylic acid or its metal salt such as hydrolyzate of acid copolymer, carboxymethyl cellulose or its alkali metal salt, methyl vinyl ether-maleic acid half ester copolymer, acrylic resin alkanolamine liquid, carboxy Vinyl polymers are exemplified.

Nonionic water-soluble polymers include polyvinylpyrrolidone, highly polymerized polyethylene glycol, vinylpyrrolidone / vinyl acetate copolymer, vinylpyrrolidone / dimethylaminoethyl methacrylate copolymer, vinylcaprolactam / vinylpyrrolidone / dimethylaminoethyl methacrylate copolymer , Cellulose or derivatives thereof (for example, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose), keratin and collagen or derivatives thereof, calcium alginate, pullulan, agar, gelatin, tamarind seed polysaccharide, xanthan gum, carrageenan, high methoxyl Pectin, low methoxyl pectin, guar gum, pectin, gum arabic, crystalline cellulose, alla Nogalactan, gum karaya, gum tragacanth, alginic acid, albumin, casein, curdlan, duran gum, dextran, quince seed gum, tragacanth gum, chitin / chitosan derivatives, starch (rice, corn, potato, wheat, etc.), keratin and collagen or derivatives thereof, etc. Natural polymer compounds are exemplified.

The oil-in-water emulsion cosmetic of the present invention comprises a lipophilic UV protection component, particularly an organic UV protection component as the component (e), and a water-soluble component such as a carboxyvinyl polymer as the component (g). When it is a sunscreen cosmetic comprising a polymer, the oil-in-water emulsion cosmetic can contain a large amount of a lipophilic UV protection component in a stable emulsified state. For this reason, there exists an advantage that it is a sunscreen cosmetics which has a high ultraviolet protection factor (SPF), and can obtain the oil-in-water emulsion cosmetics excellent in the usability as cosmetics.

A water-swellable clay mineral can be used together with the component (g) or in place of the component (g). The water-swellable clay mineral is a kind of colloid-containing aluminum silicate having a three-layer structure, and examples thereof are those represented by the following formula (7).
(X, Y) _2-3 (Si, Al) ₄ O ₁₀ (OH) ₂ Z _1/3 · nH ₂ O (7)
(Where X is Al, Fe (III), Mn (III), or Cr (III), Y is Mg, Fe (II), Ni, Zn, or Li, and Z is K, Na or Ca)
Specific examples of such water-swellable clay minerals include bentonite, montmorillonite, piderite, nontronite, saponite, hectorite, and aluminum magnesium silicate, which are natural products and synthetic products. Also good.

In the oil-in-water emulsion cosmetic according to the present invention, other ingredients that are usually blended in normal cosmetics can be blended without any particular limitation, and a moisturizer, preservative, antibacterial agent, pH adjuster, antioxidant ( Antioxidants), chelating agents and the like. What is necessary is just to mix | blend 1 type or several types suitably according to the kind, use, characteristic, property, etc. of cosmetics.

The average particle size of the oil-in-water emulsion cosmetic according to the present invention is not particularly limited, and can be appropriately designed according to the type of cosmetic, the emphasis on use, and the appearance of the cosmetic. In particular, since the emulsion has excellent stability over time and feeling of use, and has a uniform appearance, the average particle size of the emulsion particles measured using a transmission microscope is 0.02 (20 nm) to 20.0 μm (20 The average particle size is more preferably 0.10 (100 nm) to 15.0 μm (7,500 nm) immediately after the production. In particular, the oil-in-water emulsion cosmetic according to the present invention has an average particle diameter of more than 0.50 μm, preferably an oil-in-water emulsion cosmetic with a relatively large particle diameter of more than 1.00 μm. Excellent stability over time and feeling of use and uniform appearance. The range of a suitable average particle diameter is a range whose average particle diameter measured using the transmission microscope is 0.50-10.0 micrometers, for example.

Further, when the oil-in-water emulsion cosmetic of the present invention is a sunscreen cosmetic comprising (e) a lipophilic ultraviolet protection component and (g) a water-soluble polymer, The average particle size is preferably 0.10 (100 nm) to 10 μm (10,000 nm), and particularly preferably 0.75 (750 nm) to 8.0 μm (8,000 nm). When the average particle size of the emulsion particles in the sunscreen cosmetics is in the above range, a large amount of lipophilic UV protection component can be blended in a stable emulsified state, so the sunscreen cosmetics have a high UV protection index. There is an advantage that (SPF) can be realized.

The oil-in-water emulsion cosmetic described above can be obtained by emulsifying and dispersing each component by a desired method. In particular, the oil-in-water emulsion cosmetic of the present invention can be easily produced, and the obtained emulsion cosmetic has a uniform appearance and is excellent in its stability over time and feeling of use. The oil-in-water according to the present invention using the emulsifiable composition (P) obtained by uniformly mixing the components (d), (a), (b) and (c) in advance. It is highly preferred to produce type emulsion cosmetics. In addition, the method for producing the oil-in-water emulsion cosmetic according to the present invention using the emulsifiable composition (P) is an oil-in-water type having a relatively large particle size such that the average particle size exceeds 0.50 μm. Even emulsion cosmetics have the advantage that they can be easily manufactured.

Hereinafter, the present invention is carried out using the emulsifiable composition (P) obtained by uniformly mixing a predetermined number of components (d), (a), (b) and (c) in advance. The method for producing the oil-in-water emulsion cosmetic according to the present invention will be described in more detail.

The oil-in-water emulsion cosmetic according to the present invention comprises 0.9 to 90 parts by mass of component (a) and 0.6 to 120 parts by mass of component (b) with respect to 100 parts by weight of the component (d). c-1) One or more types of oil agent Emulsifiable composition (P) obtained by uniformly mixing 0 to 150 parts by mass in advance, (c-2) One or more types of oil agent, component (e) And the component (f), and more preferably, the emulsifiable composition (P) is converted into (c-2) one or more oil agents, component (e), component (f). ) And component (g).

Components (a) to (g) are the same components as described above. In addition, the component (c-1) and the component (c-2) are both “one or more types of oils” as in the case of the component (c), and the component (c) in the emulsion is two or more types. In the case of the oil agent, the component (c-1) and the component (c-2) may be a mixture of two or more oil agents, or may be one or more different oil agents. .

The emulsifiable composition (P) is self-emulsifiable and can easily form a uniform oil-in-water emulsion when it is mixed with water. On the other hand, the emulsifiable composition (P) can uniformly emulsify and solubilize other lipophilic components and hydrophilic components in water. In the production method of the present invention, other components (c-2) ) By mixing with one or more oils, (e) one or more lipophilic cosmetic ingredients and (f) water, preferably (g) even with water-soluble polymers Oil-type emulsions can be easily formed.

The amount of each component in the emulsifiable composition (P) is such that the mixture becomes a uniform and transparent liquid, has excellent emulsification / solubilization characteristics, and other components (c-2) one or more oil agents, (e) When mixed with one or more lipophilic cosmetic raw materials and (f) water, an oil-in-water emulsion cosmetic with emulsion particles having an average particle diameter of 0.50 to 10.0 μm measured using a transmission microscope is easy. The compounding ratio produced in the above is preferred.

More specifically, the emulsifiable composition (P) has a component (a) of 0.9 to 90 parts by weight, a component (b) of 0.6 to 120 parts by weight, and a component per 100 parts by weight of the component (d). (C-1) 1 or more types of oil agent 0-150 mass parts is included, Preferably, 1.1-150 mass parts of a component (c-1) is included. However, it is preferable that content of the component (d) in the said emulsifiable composition (P) exists in the range of 60.0-98.4 mass% of whole quantity.

The emulsified composition (P) can contain water as the component (f) as long as it is not self-emulsified. The water content is less than or equal to the content of component (d) in the emulsifiable composition (P) from the viewpoint of the day-to-day stability of the finally obtained emulsion cosmetic, and the composition for producing cosmetics The total amount is preferably 20.0% by mass or less, and particularly preferably 10.0% by mass or less. When the water content exceeds the upper limit, the emulsifiable composition (P) itself contains a large amount of water, and each component is mixed with each other to form an incomplete emulsified state. The properties of emulsifying and solubilizing other components (c-1), component (e) and preferably component (g) in water may be impaired. On the other hand, when a lower alcohol such as ethanol having a low flash point is used as the component (d), the flash point of the emulsifiable composition (P) is lowered by blending a small amount of water less than the above upper limit, and handling is possible. There is an advantage that it becomes easy.

The said emulsifiable composition (P) can be easily manufactured by throwing each said component into a container and stirring with a stirrer. You may manufacture using an exclusive stirring apparatus and a mixing apparatus. In addition, the order of the components to be added, the type of the stirring device and the mixing device used for producing the emulsifiable composition (P), the emulsifiable composition (P) of the present invention and other components (c-1) ), Component (e), component (f), and preferably the component (g), the oil-in-water emulsion cosmetic obtained by mixing the component (g) does not have a great influence on the particle size and the daily stability. In addition, since the emulsifiable composition (P) can be stored at room temperature for a long period of time, it can be prepared immediately before the production of the oil-in-water emulsion cosmetic, and the above components are uniformly solubilized. It can be stored in a state and used when producing an emulsion cosmetic at a desired time and place (facility).

The emulsifiable composition (P) can easily emulsify, disperse, and solubilize other lipophilic components and hydrophilic components in water. A stirrer with a paddle blade, a propeller stirrer, a Henschel stirrer, Other components (c-2) using a known simple stirrer and mixer such as TK Homomixer (Special Machine Industries Co., Ltd.), TK Homo Disper (Special Machine Industries Co., Ltd.), etc. Uniform oil-in-water emulsion makeup by mixing with the above oil agent, (e) one or more lipophilic cosmetic ingredients, and (f) water, preferably (g) further with water-soluble polymer. The material can be manufactured.

When producing such oil-in-water emulsion cosmetics, high shear emulsifiers such as high pressure emulsifiers, colloid mills, and colloid mixers are not necessarily required. When the production scale is small, a spatula or the like was used. Oil-in-water emulsion cosmetics can also be produced by manual stirring and mixing operations. In addition, the emulsifiable composition (P) has excellent self-emulsifying properties and properties that emulsify, disperse and solubilize other lipophilic components and hydrophilic components, so that a stable oil-in-water emulsion cosmetic can be obtained. It has the advantage that it is almost unnecessary to study in detail the various conditions of emulsification that are essential for production.

In order to achieve excellent stability over time, usability and appearance of the oil-in-water emulsion cosmetic, per 100 parts by mass of the emulsifiable composition (P),
(C-2) 10 to 300 parts by mass of one or more oil agents,
(E) 10 to 300 parts by weight of one or more lipophilic cosmetic raw materials,
(F) It is preferable to produce an oil-in-water emulsion cosmetic by mixing 100 to 20,000 parts by mass of water, and (g) 1 to 40 parts by mass of one or more water-soluble polymers are blended Thus, it is particularly preferable to produce an oil-in-water emulsion cosmetic.

Particularly preferably as a method for producing the oil-in-water emulsion cosmetic of the present invention,
Contains 100 to 50 parts by weight of component (d), 5 to 50 parts by weight of component (a), 3 to 60 parts by weight of component (b), and 1.1 to 50 parts by weight of one or more components (c-1). The emulsifiable composition (P) in which the content of the component (d) is in the range of 60.0 to 98.4% by mass of the total amount is prepared in advance, and further, the component (c-2) 15 to 250 This is a method for producing an oil-in-water emulsion cosmetic by mixing 15 parts by mass, component (e) 15 to 250 parts by mass, and component (f) 150 to 1100 parts by mass using mechanical force. Most preferably, it is a method for producing an oil-in-water emulsion cosmetic by further mixing 1.5 to 30 parts by mass of component (g) using mechanical force. In particular, since the component (g) is water-soluble, it is preferably added and mixed as an aqueous solution having an arbitrary concentration together with the component (f). However, the component (g) may thicken in the form of an aqueous solution, and is generally handled as an aqueous solution of about 0.01% by mass to 5% by mass because of ease of handling.

The above mixing operation can be carried out with any stirrer or mixer, and while stirring at a rotational speed of about 500 to 5000 rpm, the components of the oil-in-water emulsion cosmetic are gradually injected, and further after the injection is completed Stir and mix.

The emulsion particle size of the emulsion cosmetic obtained by the above-described method for producing an oil-in-water emulsion cosmetic has an average particle size of 0.50 to 10.0 μm measured immediately after production using a transmission microscope. It is preferable.

In the above method for producing an oil-in-water emulsion cosmetic, when (e) a lipophilic UV protection component and (g) a water-soluble polymer are used to produce a sunscreen cosmetic, The average particle size of the emulsion particles in this stage is preferably 0.10 (100 nm) to 7.5 μm (7,500 nm), and preferably 0.75 (750 nm) to 5.5 μm (5,500 nm). Particularly preferred.

Since the method for producing an oil-in-water emulsion cosmetic of the present invention allows a large amount of lipophilic UV protection component to be blended in a stable emulsified state, particularly in skin cosmetics, the UV protection index (SPF) is high. The present invention is extremely suitable as a method for producing a sunscreen cosmetic that is an oil-in-water emulsion cosmetic in the range of 10 to 100, more preferably 20 to 100.

The oil-in-water emulsion cosmetic of the present invention is not particularly limited, and skin cosmetics such as skin cleansers, skin care cosmetics, makeup cosmetics, antiperspirants, UV protection agents; hair cleansers, hair stylings, Examples include hair coloring agents, hair nourishing agents, hair rinses, and other hair cosmetics; bath cosmetics; perfumes and eau de cologne. It is preferably a skin cosmetic or a hair cosmetic.

The skin cosmetic may be used for any part of the scalp, face (including lips, eyebrows, and cheeks), fingers, nails, and whole body. Specifically, cleansing gel, cleansing cream, cleansing foam, cleansing milk, cleansing lotion, facial cleansing cream, eye makeup remover, facial cleansing foam, liquid soap for whole body, hand soap, gel soap, facial rinse, body rinse, shaving cream , Skin cleansing agents such as anti-acne cosmetics; skin creams, scalp treatments, skin milk, milk lotion, milky lotion, lotion, moisturizer, beauty liquid, facial pack, essence, shaving lotion, etc .; foundation Makeup cosmetics such as makeup base, lip balm, eye shadow, and eye cream; antiperspirants such as deodorants; sunscreens such as sunscreens and suntans粧料 are exemplified.

In particular, the oil-in-water emulsion cosmetic of the present invention has an ultraviolet protection factor (SPF) in the range of 10 to 100, more preferably 20 to 100, particularly in skin cosmetics, and was measured using a transmission microscope. It is particularly useful as a sunscreen cosmetic having an average emulsion particle size in the range of 0.50 to 10.0 μm.

The above-mentioned cosmetics for hair include detergents for hair such as shampoos and rinse-in shampoos; hair conditioners such as hair oils, curl retention agents for hair, set agents, hair creams, hair sprays, hair liquids and hair waxes; Examples include hair colorants such as hair color sprays, hair color rinses and hair color sticks; hair nourishing agents such as hair tonics, hair treatments and hair packs; and hair rinses such as oil rinses, cream rinses and treatment rinses. The bath cosmetic is exemplified by a foam bath.

Examples of the container for storing the oil-in-water emulsion cosmetic according to the present invention include jars, pumps, bottles, and spray containers. In particular, the oil-in-water emulsion cosmetic according to the present invention is less likely to cause separation of the hydrophobic component composed of the component (c) and the component (e), and has excellent aging stability, so that it is filled in a transparent container. Can be stored stably, and has the advantage that it can be sold over-the-counter as a product with excellent appearance.

EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention in detail, this invention is not limited by these. The dimethylsiloxane / methylhydrogensiloxane copolymer and dimethylpolysiloxane used in the synthesis examples were produced by an equilibration polymerization method. The test methods used in Examples and Comparative Examples are as follows. In the synthesis examples, reference examples, examples and comparative examples, “parts” represents parts by mass.

[Viscosity of polyoxyalkylene-modified dimethylpolysiloxane solution]
The viscosity of a 50 mass% diluted solution of polyoxyalkylene-modified dimethylpolysiloxane obtained in Synthesis Example 1 with dipropylene glycol was measured at a temperature of 25 ° C. using a rotational viscometer (rotor No. 3).

[Stability over time of oil-in-water emulsion cosmetics]
The appearance was observed after 1 month at room temperature. The evaluation criteria are as follows.
Evaluation criteria:
○: No change, △: Oil floating is visible, ×: Separated

[Average particle size of emulsion particles in oil-in-water emulsion cosmetics]
The average particle size of the emulsion particles of the oil-in-water emulsion cosmetic was observed by visual observation using a transmission microscope (Nikon ECLIPSE 80i type).
Transmission microscope (model number): Nikon ECLIPSE 80i
Observation method: An observation sample was applied on a slide glass, and a cover glass was applied from above to prepare a preparation. Immersion oil A (nd = 1.515) was filled between the preparation and the objective lens, and the morphology was observed at 1000 times.

[Feel of oil-in-water emulsion cosmetics]
A sensory test was conducted on smoothness and stickiness by a female panelist. The evaluation criteria are as follows.
Evaluation criteria:
◎: Very good, ○: Good, Δ: Neither can be said, ×: Unfavorable

で表されるジメチルシロキサン・メチルハイドロジェンシロキサン共重合体 １５．９重量部と平均構造式：ＣＨ_２＝ＣＨＣＨ_２Ｏ（Ｃ_２Ｈ_４Ｏ）₃₀（Ｃ_３Ｈ_６Ｏ）₁₀Ｈ
で表される片末端アリルエーテル化ポリオキシアルキレン（オキシエチレンとオキシプロピレンのランダムコポリマー）３４．１重量部（上記共重合体中のケイ素原子結合水素原子と上記アリルエーテル化ポリオキシアルキレン中のアリル基のモル比は１：１．３）とを混合し、溶媒としてイソプロピルアルコール１５重量部を加えた。更に塩化白金酸（反応原料の合計重量に対して１５ｐｐｍになる量）を加えて８６℃で２時間攪拌した後、赤外分光分析(IR)にてケイ素原子結合水素原子を示すピークが消失していることを確認した。その後、ジプロピレングリコール５０重量部を加えて３０分間攪拌した後、減圧下でストリッピングすることにより、平均構造式：

で表されるポリオキシアルキレン変性ジメチルポリシロキサンの５０重量％溶液（粘度４７８０ｍＰａ・ｓ、以下、シリコーン溶液（Ａ）と言う）を得た。 [Synthesis Example 1]
In a glass flask with stirrer and thermometer, average structural formula:

15.9 parts by weight and an average structural formula: CH ₂ ═CHCH ₂ O (C ₂ H ₄ O) ₃₀ (C ₃ H ₆ O) ₁₀ H
34.1 parts by weight of an allyl etherified polyoxyalkylene (random copolymer of oxyethylene and oxypropylene) represented by the formula (Si-bonded hydrogen atom in the copolymer and allyl in the allyl etherified polyoxyalkylene) The molar ratio of the groups was 1: 1.3), and 15 parts by weight of isopropyl alcohol was added as a solvent. Furthermore, after adding chloroplatinic acid (amount to be 15 ppm with respect to the total weight of the reaction raw materials) and stirring at 86 ° C. for 2 hours, the peak indicating silicon-bonded hydrogen atoms disappeared by infrared spectroscopy (IR). Confirmed that. Thereafter, 50 parts by weight of dipropylene glycol was added and stirred for 30 minutes, and then stripped under reduced pressure to obtain an average structural formula:

A 50 wt% solution of polyoxyalkylene-modified dimethylpolysiloxane represented by the formula (viscosity 4780 mPa · s, hereinafter referred to as silicone solution (A)) was obtained.

成分（ｂ）：
ジPOE(8)アルキル(12〜15)エーテルリン酸^１
商品名「ニッコールDDP-8」（登録商標）,日光ケミカルズ製

ポリオキシアルキレン変性ジメチルポリシロキサン^２；下記平均構造式で表されるポリオキシアルキレン変性ジメチルポリシロキサン（動粘度１,７００ｍｍ^２/ｓ）
平均構造式：

成分（ｃ−１）：
ジメチルポリシロキサン^３；ＳＨ２００Ｃ−６ｃｓ（東レ・ダウコーニング製の両末端トリメチルシロキシ基封鎖ジメチルポリシロキサン、動粘度６ｍｍ^２/ｓ）
メチルフェニルポリシロキサン^４；ＳＨ５５６（東レ・ダウコーニング製フェニルトリメチコン、動粘度２０ｍｍ^２/ｓ）
[Reference Examples 1 and 2: Preparation in advance of emulsifiable compositions P1 and P2]
Each emulsifiable composition was prepared by mixing each component of the following table uniformly in a beaker using a three-one motor (manufactured by Yamato Kagaku, MODEL LR500B) at a rotation speed of 300 rpm. In the obtained emulsifiable composition, all components were uniformly dispersed in ethanol, and the appearance was evaluated as “perfectly transparent”.

Component (b):
DiPOE (8) alkyl (12-15) ether phosphate ¹
Product name "Nikkor DDP-8" (registered trademark), manufactured by Nikko Chemicals

Polyoxyalkylene-modified dimethylpolysiloxane ² ; polyoxyalkylene-modified dimethylpolysiloxane represented by the following average structural formula (kinematic viscosity: 1,700 mm ² / s)
Average structural formula:

Component (c-1):
Dimethylpolysiloxane ³ ; SH200C-6cs (both terminal trimethylsiloxy group-blocked dimethylpolysiloxane manufactured by Toray Dow Corning, kinematic viscosity 6 mm ² / s)
Methylphenylpolysiloxane ⁴ ; SH556 (phenyltrimethicone manufactured by Toray Dow Corning, kinematic viscosity 20 mm ² / s)

[Examples 1-7]
A sunscreen cosmetic, which is an oil-in-water emulsion cosmetic, was prepared by the following method. In addition, Table 3 shows the trade names and manufacturers of each component described in Table 2.
(Production method)
<Step 1> Ingredients listed in Table 2 (1) 23.95 parts by mass of purified water, (2) 2.0% by mass aqueous solution of carboxyvinyl polymer (Carbopol 940, manufactured by Lubrizol Advanced Materials) 22.50 parts by mass, (3) 10.5 parts by mass of a 1.0% by weight aqueous solution of sodium hydroxide as a neutralizing agent was placed in a beaker and stirred until uniform. [Composition A]
<Step 2> Ingredient (4) listed in Table 2: emulsifying composition, ingredient (5): lipophilic UV protection ingredient, ingredient (6): oil and ingredient (7): tri (POE) lauryl ether phosphorus Sodium acid (trade name “Hostaphat KL340D”) is placed in a beaker and mixed until uniform. [Composition B]
<Step 3> The above [Composition A] is emulsified by injecting [Composition B] little by little while stirring at 3000 rpm using a homodisper (manufactured by Tokushu Kika, TK homodisper). Emulsion state.
<Step 4> As an additive component of other cosmetics, add component (8): moisturizer, component (9): preservative, component (10): feel modifier (silicone powder suspension) listed in Table 2. By mixing, a sunscreen cosmetic (= oil-in-water emulsion cosmetic) according to the present invention was prepared.
<Step 5> The emulsified state of the emulsion particles immediately after preparation was confirmed by the above method.

[Comparative Example 1]
In the production method of Example 1, sunscreen was obtained in the same manner as in Example 1 except that component (4): ethanol was added in place of the emulsifiable composition in the amount shown in Table 2. A cosmetic (= oil-in-water emulsion cosmetic) was prepared, and the emulsified state of the emulsion particles immediately after the preparation was confirmed by the above method.

The touch of sunscreen cosmetics and the stability over time in Examples and Comparative Examples were evaluated according to the above methods. Furthermore, the sunscreen cosmetics were evaluated according to the criteria of UV protection index (SPF value) / UV-A protection index (PA value) or less, and the evaluation results are shown in Table 2. Moreover, about Example 3 and Comparative Example 1, the photograph of the particle | grains by the transmission microscope of the emulsion particle | grains was shown in FIG.1 and FIG.2.

[UV protection index (SPF value) / UV-A protection index (PA value)]
Measuring instrument: UV-1000S (Labaphere)
Using transpore surgical tape (manufactured by Sumitomo 3M), application amount 2.0mg / cm2
Evaluation method: Sunscreen cosmetics were uniformly applied (2.0 mg / cm 2) to transpore surgical tape (manufactured by Sumitomo 3M), and the SPF value was measured using UV-1000S (manufactured by Labaphere).
PA evaluation criteria:
+: There is a UV-A prevention effect ++: There is a considerable UV-A prevention effect +++: There is a very UV-A prevention effect (*) Unmeasured sample: “−” representing no evaluation is shown in the table .

The sunscreen cosmetics of Examples 1 to 7, particularly Examples 2 to 7 of the present invention were excellent in feel, SPF value, PA value, and stability over time. Moreover, as shown in FIG. 1, 1-10 micrometers, specifically 1-5 micrometers emulsified particle | grains formed the uniform dispersion state. On the other hand, the sunscreen cosmetics of Comparative Example 1 showed good values for SPF and PA by blending a large amount of UV protection components, but these could not be emulsified in a stable state. It was inferior to the touch and separated over time. Moreover, as shown in FIG. 2, it was the state in which the coarse particle was disperse | distributed, and was not uniform also in the emulsified state.

[Examples 8 to 10]
The following hair cosmetics, which are oil-in-water emulsion cosmetics, were prepared using the emulsifiable composition P1 prepared in advance in the reference example. The emulsion particles of these oil-in-water emulsion cosmetics have 1 to 10 μm emulsified emulsion particles forming a uniform dispersed state, and the feeling of use is good.

[Example 8] Anti-squeaking treatment (component) (wt%)
1. Emulsified composition P1 7.00
2. Methylphenylpolysiloxane ¹ 2.00
3. Heptamethyl-3-octyltrisiloxane ² 2.00
4). Dimethylpolysiloxane ³ 4.00
5). (Bisisobutyl PEG-14 / Amodimethicone) Copolymer ⁴ 2.00
6). 6. Purified water remaining amount Disodium hydrogen phosphate / 12 water 0.05
8). Sodium dihydrogen phosphate 0.01
9. (Eicosanedioic acid / tetradecanedioic acid) polyglyceryl-10 glycerin 2.00
10. Inositol 1.20
11. Ethyl lactate 0.10
12 Hydroxyethylurea 2.80
13. Antiseptic ⁴⁵ 0.10
14 Carboxyvinyl polymer (2% aqueous solution) 14.00
15. Hydroxypropyl starch phosphate (10% aqueous solution) 5.00
16. Ethanol 7.00
17. Triethanolamine 0.50

(* 1) Methylphenylpolysiloxane ¹ : SH 556 (manufactured by Dow Corning Toray)
(* 2) Heptamethyl-3-octyltrisiloxane ² : FZ-3196 (manufactured by Dow Corning Toray)
(* 3) Dimethylpolysiloxane ³ : BY 11-007 (manufactured by Dow Corning Toray)
(* 4) (Bisisobutyl PEG-14 / Amodimethicone) Copolymer ⁴ : SILSTLE 104 (manufactured by Dow Corning Toray)
(* 5) Preservative ⁵ : Methylisothiazolinone, water (ZONEN-MT 10, manufactured by Chemicrea)

(Production method)
A. Ingredients 1-5 are mixed.
B. Ingredients 6 to 10 are heated and dissolved at 60 ° C., and then cooled to room temperature.
C. While stirring at a rotation speed of 1000 rpm using a TK homodisper, B. Ingredients 11-15 are added to and mixed uniformly.
D. Ingredients 16 and 17 are uniformly dissolved.
E. While stirring at a rotational speed of 1000 rpm using a TK homodisper, C.I. D. To increase the viscosity.
F. While stirring at a rotational speed of 2000 rpm using a TK homodisper, E. A. Was gradually added and emulsified, and the mixture was further stirred for 2 minutes to obtain a white cream-like squeaking prevention treatment.

[Example 9] Shiny hair treatment (component) (wt%)
1. Emulsified composition P1 7.00
2. Methylphenylpolysiloxane ¹ 2.00
3. Heptamethyl-3-octyltrisiloxane ² 2.00
4). Dimethylpolysiloxane ⁶ 4.00
5). Aminopropylphenyltrimethicone ⁷ 2.00
6). 6. Purified water remaining amount Disodium hydrogen phosphate / 12 water 0.05
8). Sodium dihydrogen phosphate 0.01
9. (Eicosanedioic acid / tetradecanedioic acid) polyglyceryl-10 glycerin 2.00
10. Inositol 1.20
11. Ethyl lactate 0.10
12 Hydroxyethylurea 2.80
13. Antiseptic ⁵ 0.10
14 Carboxyvinyl polymer (2% aqueous solution) 16.00
15. Hydroxypropyl starch phosphate (10% aqueous solution) 5.00
16. Ethanol 7.00
17. Triethanolamine 0.60

(* 1) Methylphenylpolysiloxane ¹ : SH 556 (manufactured by Dow Corning Toray)
(* 2) Heptamethyl-3-octyltrisiloxane ² : FZ-3196 (manufactured by Dow Corning Toray)
(* 6) Dimethylpolysiloxane ⁶ : SH 200C Fluid 350 cs (manufactured by Dow Corning Toray)
(* 7) Aminopropylphenyl trimethicone ⁷ : 2-2078 Fluid (manufactured by Dow Corning Toray)
(* 5) Preservative ⁵ : Methylisothiazolinone, water (ZONEN-MT 10, manufactured by Chemicrea)

(Production method)
A. Ingredients 1-5 are mixed.
B. Ingredients 6 to 10 are heated and dissolved at 60 ° C., and then cooled to room temperature.
C. While stirring at a rotation speed of 1000 rpm using a TK homodisper, B. Ingredients 11-15 are added to and mixed uniformly.
D. Ingredients 16 and 17 are uniformly dissolved.
E. While stirring at a rotational speed of 1000 rpm using a TK homodisper, C.I. D. To increase the viscosity.
F. While stirring at a rotational speed of 2000 rpm using a TK homodisper, E. A. Was gradually added and emulsified, and the mixture was further stirred for 2 minutes to obtain a white cream-like treatment for glossy hair.

[Example 10] Damage care treatment (component) (wt%)
1. Emulsified composition P1 7.00
2. Methylphenylpolysiloxane ¹ 2.00
3. Heptamethyl-3-octyltrisiloxane ² 1.00
4). Dimethylpolysiloxane ⁶ 5.00
5). Dimethylpolysiloxane ⁸ 2.00
6). Cetyl ethylhexanoate 1.20
7). Octyl methoxycinnamate 1.00
8). Purified water remaining 9. Disodium hydrogen phosphate / 12 water 0.05
10. Sodium dihydrogen phosphate 0.01
11. (Eicosanedioic acid / tetradecanedioic acid) polyglyceryl-10 glycerin 2.00
12 Inositol 1.20
13. Ethyl lactate 0.10
14 Hydroxyethylurea 2.80
15. Antiseptic ⁵ 0.10
16. Carboxyvinyl polymer (2% aqueous solution) 16.00
17. Hydroxypropyl starch phosphate (10% aqueous solution) 5.00
18. Ethanol 7.00
19. Triethanolamine 0.60
20. Cross-linked methylpolysiloxane emulsion ⁹ 4.00

(* 1) Methylphenylpolysiloxane ¹ : SH 556 (manufactured by Dow Corning Toray)
(* 2) Heptamethyl-3-octyltrisiloxane ² : FZ-3196 (manufactured by Dow Corning Toray)
(* 6) Dimethylpolysiloxane ⁶ : SH 200C Fluid 350 cs (manufactured by Dow Corning Toray)
(* 8) Dimethylpolysiloxane ⁸ : SH 200C Fluid 1.5cs (Toray Dow Corning)
(* 5) Preservative ⁵ : Methylisothiazolinone, water (ZONEN-MT 10, manufactured by Chemicrea)
(* 9) Cross-linked methylpolysiloxane emulsion ⁹ : emulsion of cyclopentasiloxane, dimethiconol, dimethicone crosspolymer (7-3101 Elastomer Blend HIP Emulsion, manufactured by Toray Dow Corning)

(Production method)
A. Mix ingredients 1-7.
B. Ingredients 8-12 are heated and dissolved at 60 ° C., and then cooled to room temperature.
C. While stirring at a rotation speed of 1000 rpm using a TK homodisper, B. Ingredients 13-17 are added to and mixed uniformly.
D. Ingredients 18, 19 are dissolved uniformly.
E. While stirring at a rotational speed of 1000 rpm using a TK homodisper, C.I. D. To increase the viscosity.
F. While stirring at a rotational speed of 2000 rpm using a TK homodisper, E. A. Is gradually added to emulsify, and additional stirring is performed for 2 minutes.
G. While stirring with a TK homodisper at a rotational speed of 2000 rpm, F.M. Ingredient 20 was added to and stirred until uniform to obtain a white cream-like damage care treatment.

In Example 3, it is a transmission microscope picture of the emulsion particle | grains in the obtained oil-in-water emulsion cosmetics. 4 is a transmission micrograph of emulsion particles in the obtained oil-in-water emulsion cosmetic in Comparative Example 1.

Claims (13)

(A) Polyoxyalkylene-modified diorganopolysiloxane represented by the average structural formula (1)

(In the formula, R ¹ is a monovalent hydrocarbon group or a monovalent substituted hydrocarbon group (excluding those corresponding to R ² ), and R ² is represented by the general formula (2): —R ³ —O— ( C ₂ H ₄ O) _a (C ₃ H ₆ O) _b R ⁴ polyoxyalkylene group (wherein R ³ is an alkylene group having 2 to 30 carbon atoms, R ⁴ is a hydrogen atom, carbon It is a group selected from an alkyl group having 1 to 30 atoms or an organic group represented by-(OC) -R ⁵ (R ⁵ is an alkyl group having 1 to 30 carbon atoms), A is a hydroxyl group, R ¹ And the same or different groups selected from R ² ,
a and b are 1 ≦ a ≦ 50 and 0 ≦ b ≦ 50, respectively, and 10 ≦ a + b ≦ 100, and m and n are 100 ≦ m ≦ 500 and 0 ≦ n ≦ 40, respectively. For n = 0, at least one of A is ^{R 2.} ),
(B) one or more surfactants (except for those corresponding to component (a)),
(C) one or more oil agents (d) one or more hydrophilic alcohols having at least one hydroxyl group in the molecule and being liquid at room temperature,
An oil-in-water emulsion cosmetic comprising (e) one or more lipophilic cosmetic raw materials and (f) water. The oil-in-water emulsion cosmetic according to claim 1, further comprising (g) a water-soluble polymer. Component (e) is one or more lipophilic cosmetic raw materials selected from the group consisting of UV protection components, gum-like silicones, silicone resins, silicone elastomer powders, bioactive components, fragrances and pigments. The oil-in-water emulsion cosmetic according to claim 1. The oil-in-water according to any one of claims 1 to 3, wherein the oil-in-water emulsion cosmetic has an average particle size of 0.50 to 10.0 µm measured using a transmission microscope. Type emulsion cosmetics. The oil-in-water emulsion cosmetic according to claim 1 or 2, wherein the component (e) is a lipophilic cosmetic raw material containing at least one ultraviolet protection component and is a sunscreen cosmetic. . Component (b) is a polyoxyalkylene-modified diorganopolysiloxane (however, the degree of polymerization of the diorganopolysiloxane portion is smaller than that of component (a) and the HLB is 3 to 10), polyoxyalkylene alkyl ether, sorbitan fatty acid 1 or more nonionic surfactant selected from the group consisting of ester, polyoxyalkylene sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, and polyoxyalkylene fatty acid ester. Item 3. The oil-in-water emulsion cosmetic according to Item 2. (D) 100 parts by weight of one or more hydrophilic alcohols having at least one hydroxyl group in the molecule and being liquid at room temperature;
(A) Polyoxyalkylene-modified diorganopolysiloxane represented by the average structural formula (1)

(In the formula, R ¹ is a monovalent hydrocarbon group or a monovalent substituted hydrocarbon group (excluding those corresponding to R ² ), and R ² is represented by the general formula (2): —R ³ —O— ( C ₂ H ₄ O) _a (C ₃ H ₆ O) _b R ⁴ polyoxyalkylene group (wherein R ³ is an alkylene group having 2 to 30 carbon atoms, R ⁴ is a hydrogen atom, carbon It is a group selected from an alkyl group having 1 to 30 atoms or an organic group represented by-(OC) -R ⁵ (R ⁵ is an alkyl group having 1 to 30 carbon atoms), A is a hydroxyl group, R ¹ And the same or different groups selected from R ² ,
a and b are 1 ≦ a ≦ 50 and 0 ≦ b ≦ 50, respectively, and 10 ≦ a + b ≦ 100, and m and n are 100 ≦ m ≦ 500 and 0 ≦ n ≦ 40, respectively. For n = 0, at least one of A is ^{R 2.} 0.9-90 parts by mass,
(B) 0.6 to 120 parts by mass of one or more surfactants (excluding those corresponding to component (a)) and (c-1) one to more than 0 to 150 parts by mass of an oil agent in advance Emulsifiable composition (P) obtained by mixing uniformly,
(C-2) one or more oil agents,
The method for producing an oil-in-water emulsion cosmetic according to claim 1, wherein (e) one or more lipophilic cosmetic raw materials and (f) water are mixed. (D) 100 parts by weight of one or more hydrophilic alcohols having at least one hydroxyl group in the molecule and being liquid at room temperature;
(A) Polyoxyalkylene-modified diorganopolysiloxane represented by the average structural formula (1)

(In the formula, R ¹ is a monovalent hydrocarbon group or a monovalent substituted hydrocarbon group (excluding those corresponding to R ² ), and R ² is represented by the general formula (2): —R ³ —O— ( C ₂ H ₄ O) _a (C ₃ H ₆ O) _b R ⁴ polyoxyalkylene group (wherein R ³ is an alkylene group having 2 to 30 carbon atoms, R ⁴ is a hydrogen atom, carbon It is a group selected from an alkyl group having 1 to 30 atoms or an organic group represented by-(OC) -R ⁵ (R ⁵ is an alkyl group having 1 to 30 carbon atoms), A is a hydroxyl group, R ¹ And the same or different groups selected from R ² ,
a and b are 1 ≦ a ≦ 50 and 0 ≦ b ≦ 50, respectively, and 10 ≦ a + b ≦ 100, and m and n are 100 ≦ m ≦ 500 and 0 ≦ n ≦ 40, respectively. For n = 0, at least one of A is ^{R 2.} 0.9-90 parts by mass,
(B) 0.6 to 120 parts by mass of one or more surfactants (excluding those corresponding to component (a)) and (c-1) one to more than 0 to 150 parts by mass of an oil agent in advance Emulsifiable composition (P) obtained by mixing uniformly,
(C-2) one or more oil agents,
(E) one or more lipophilic cosmetic ingredients,
The method for producing an oil-in-water emulsion cosmetic according to claim 2, wherein (f) water and (g) one or more water-soluble polymers are mixed. It is 10-300 parts by mass of component (c-2), 10-300 parts by mass of component (e), and 100-2,000 parts by mass of component (f) per 100 parts by mass of the emulsifiable composition (P). The method for producing an oil-in-water emulsion cosmetic according to claim 7, The method for producing an oil-in-water emulsion cosmetic according to claim 7 or 8, wherein the component (e) is a lipophilic cosmetic raw material containing at least one ultraviolet protection component. The oil-in-water according to claim 7 or 8, wherein the component (b) comprises (b1) one or more ionic surfactants and (b2) one or more nonionic surfactants. Type emulsion cosmetic manufacturing method. Component (b) is a polyoxyalkylene-modified diorganopolysiloxane (however, the degree of polymerization of the diorganopolysiloxane portion is smaller than that of component (a) and the HLB is 3 to 10), polyoxyalkylene alkyl ether, sorbitan fatty acid 8. One or more nonionic surfactants selected from the group consisting of esters, polyoxyalkylene sorbitan fatty acid esters, polyoxyethylene hydrogenated castor oil and polyoxyalkylene fatty acid esters, The manufacturing method of the oil-in-water type emulsion cosmetics of Claim 8. The oil-in-water emulsion makeup according to any one of claims 7 to 12, which is a method for producing an oil-in-water emulsion cosmetic having an average particle size of 0.50 to 10.0 µm measured using a transmission microscope. Manufacturing method.

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