JP5110797B2 - Hair cosmetics - Google Patents

Description

  The present invention contains a polymeric silicone, has excellent stretch, smoothness and soft feel when applied to hair, does not stick to the hair, and is smooth and soft to the hair after application. The present invention relates to a hair cosmetic having a smooth feeling.

  In recent years, hair loss due to coloring and permanent web treatment has increased, and damage such as difficulty in coherence has increased, and there is a need for hair cosmetics that can impart good slipperiness, flexibility, gloss, etc. from wet to dry. It has been. Therefore, various silicones and polymer silicones having various polymerization degrees are generally used to give the hair gloss and smoothness.

  For example, high molecular weight silicone (silicone gum) having a polymerization degree of 3000 or more has a film-forming property, is excellent in setting power, and can impart smoothness and luster to hair, and thus has been widely used as a hair treatment agent in recent years. For example, Patent Document 1 describes a hair cosmetic containing a high molecular weight silicone having a degree of polymerization of 3000 to 20000 and a low-boiling silicone having 2 to 7 silicon necessary to dissolve the high molecular weight. Patent Document 2 describes a hair treatment agent containing dimethyl silicone gum having a polymerization degree of 4000 to 9000, low polymerization silicone having a polymerization degree of 30 to 300, and volatile silicone oil. However, although high molecular weight silicone gum is excellent in gloss and setability, there are cases where sufficient effects cannot be obtained in terms of ease of extension to hair, familiarity, and smoothness.

  On the other hand, Patent Document 3 uses dimethylpolysiloxane having a polymerization degree of 500 to 2500, silicone having a polymerization degree of 100 or less, volatile oil, and vegetable oil having an iodine value of 120 or less, as a silicone having a polymerization degree of 2500 or less. In addition, hair cosmetics that impart a natural luster and a smooth feel, have no stickiness, and have a conditioning effect are described.

  However, there is a demand for hair cosmetics, particularly hair care agents, which have good elongation at the time of application, have smoothness and softness, give smoothness and softness to the hair after application, and have no stickiness.

JP 63-183517 A Japanese Unexamined Patent Publication No. 1-139522 JP 2005-206467 A

  Therefore, the present invention is excellent in elongation, smoothness and soft feel when applied to hair, does not stick to the hair, and is smooth and soft on the hair after application. It aims at providing the hair cosmetics which can provide set property.

  The present inventors have achieved the above problem by combining a low molecular weight silicone oil and a cholesterol derivative with a high molecular silicone having a medium degree of polymerization (number average degree of polymerization of 1000 to 2900) and a volatile hydrocarbon as a diluent. I found it to be solved.

That is, the present invention contains the following components (A) to (D), and the weight ratio of the component (A) to the component (B) in the composition is (A) / (B) = 0.5 / 99.5 to The hair cosmetic composition is 50/50, and the total amount of components (A) + (B) is 70% by weight or more in the composition.
(A) High molecular silicone represented by the following general formula (1)

[Wherein, R ¹ represents a methyl group or a part thereof represents a phenyl group, R ² represents a methyl group or a hydroxyl group, and n represents a number of 1000 to 2900. ]
(B) Volatile hydrocarbon oil
(C) Cholesterol derivative
(D) Low viscosity silicone oil with a viscosity of 50mm ² / s (25 ° C) or less

  The hair cosmetic composition of the present invention is excellent in elongation, smoothness and soft feel when applied to the hair, does not stick to the hair, and is smooth and soft on the hair after application. (Sufficient set property) can be imparted.

The component (A) high molecular silicone is represented by the general formula (1), and exhibits a viscous water tank-like property at room temperature, and has a number average degree of polymerization of 1500 to 2800, particularly 2300 to 2700. preferable. Specific examples include dimethylpolysiloxane, methylphenylpolysiloxane, terminal hydroxyl group-containing dimethylpolysiloxane, and terminal hydroxyl group-containing methylphenylpolysiloxane. In particular, dimethylpolysiloxane in which R ¹ is a methyl group and terminal hydroxyl group-containing dimethylpolysiloxane are preferred.

  The polymeric silicone of component (A) can be used in combination of two or more thereof, and the content thereof is not sticky, can give a smooth feel, and the hair cosmetic composition of the present invention has good hair quality. The content is preferably 0.5 to 40% by weight, more preferably 3 to 25% by weight, and particularly preferably 10 to 20% by weight.

  The volatile hydrocarbon oil of component (B) is preferably a low-boiling isoparaffinic hydrocarbon, particularly an isoparaffinic hydrocarbon having a boiling point of 60 to 260 ° C. For example, a branched or straight chain hydrocarbon oil having 8 to 18 carbon atoms, particularly 10 to 14 carbon atoms is preferable. Specifically, commercial products such as Marcazole R (Maruzen Petroleum Co., Ltd.), IP Solvent 1620 (Idemitsu Petrochemical Co., Ltd.), and Isosol 300 (Shin Nippon Petrochemical Co., Ltd.) can be used. The hydrocarbon oil may be a mixture, but in the case of a mixture, the peak of the carbon number distribution is 10 to 14 carbon atoms in order to maintain a sticky feeling during application and drying and an appropriate volatility. It is preferable to contain 80% by weight or more, particularly 90% by weight or more of the hydrocarbon oil.

  Two or more kinds of volatile hydrocarbon oils can be used in combination, and the content thereof is preferably 20 to 95% by weight in the hair cosmetic composition of the present invention, particularly 40 to 90% by weight, and more preferably 65 to 87% by weight is preferred.

  Further, the total content of the component (A) and the component (B) is preferably 70 to 99% by weight, and particularly preferably 85 to 97% by weight in the hair cosmetic composition of the present invention. The weight ratio of component (A) to component (B) is such that (A) / (B) is 0.5 / 99.5-50 from the viewpoints of elongation of the agent to the hair, ease of application, and non-stickiness. Although adjusted to be in the range of / 50, it is preferably in the range of 5/95 to 30/70, particularly 10/90 to 25/75.

  Examples of the cholesterol derivative of component (C) include fatty acid cholesteryl such as cholesteryl stearate, cholesteryl oleate, cholesteryl hydroxystearate, and cholesteryl isostearate. ~ Liquid is preferred.

  Particularly preferred are branched fatty acid cholesteryl esters represented by the following general formula (2).

[Wherein R ³ represents a saturated branched aliphatic hydrocarbon group having a total of 11 to 27 carbon atoms. ]

The branched fatty acid cholesteryl ester represented by the general formula (2) is produced by a method for producing an ordinary ester from a branched fatty acid or a derivative thereof and cholesterol (for example, Japanese Patent Publication No. 59-23320). The branched fatty acid and cholesterol can be reacted as they are for esterification, or either one can be led to a more reactive derivative and then esterified. Branched fatty cholesteryl ester raw material is a branched fatty acid is (R ³ COOH) can be used those 12 to 28 carbon atoms (carbon atoms as R ³ 11-27), as a carbon number 14 to 22 (R ³ Those having 13 to 21 carbon atoms are preferred, and those having 18 carbon atoms are particularly preferred. The branched fatty acid is preferably a saturated branched fatty acid having at least one alkyl side chain from the carboxy group bonding position to the center of the main chain.

  In addition to cholesterol produced by various methods, cholesterol obtained by extraction or extraction purification from natural substances can also be used.

  Of these branched fatty acid cholesteryl esters, methyl branched isostearic acid cholesteryl ester is most preferred.

  In the present invention, the cholesterol derivative may be used alone or as a mixture of two or more, and the content thereof is preferably 0.001 to 10% by weight in the hair cosmetic composition of the present invention, and is dried from a wet state. From the point which can give smoothness and softness to hair until time, 0.001 to 5 weight% is further preferable, and 0.005 to 0.5 weight% is especially preferable.

The low-viscosity silicone oil of component (D) has a viscosity at 25 ° C. of 50 mm ² / s or less, preferably 5 to 20 mm ² / s, particularly in terms of adjustment of volatility from application to drying. From 5 to 15 mm ² / s, dimethylpolysiloxane, methylphenylpolysiloxane and the like are preferable. In the present invention, (A) high molecular silicone oil is diluted with (B) volatile hydrocarbon oil, and a small amount of (D) low-viscosity silicone oil is blended, so that elongation and familiarity to the hair at the time of application can be achieved. For this reason, since a thin film can be formed on the hair surface after application, the feeling of stickiness can be reduced without impairing the smoothness and softness of the hair.

  The low-viscosity silicone may be used alone or as a mixture of two or more, and the blending amount is preferably 0.1 to 10% by weight in the composition, and imparts smoothness and softness from wet to dry. From this point, 0.5 to 8% by weight, particularly 0.5 to 5% by weight is preferable.

  In the present invention, vegetable oil can be further blended as component (E). The vegetable oil is preferably liquid at 25 ° C., for example, sunflower oil, avocado oil, camellia oil, rice germ oil, macadamia nut oil, olive oil, jojoba oil, corn oil, rapeseed oil, sesame oil, castor oil, linseed oil, A mink oil etc. are mentioned, These can be used individually or in combination of 2 or more types.

  The content of the vegetable oil is preferably 0.001 to 5% by weight in the hair cosmetic composition of the present invention, and 0.005 to 3% by weight, particularly from the viewpoint of imparting smoothness and softness to the hair from the wet state to the dry state. 0.01 to 2% by weight is preferred.

  The hair cosmetic composition of the present invention may further contain components such as an oily / aqueous conditioning component and a set polymer from the viewpoint of improving hair styling properties, feeling of unity, and improving hair feel.

  Oily conditioning ingredients are useful for improving the feeling of hair after drying, such as waxes such as beeswax, whale wax, lanolin, microcrystalline wax, ceresin wax, carnauba wax, etc .; cetyl alcohol, oleyl alcohol, stearyl alcohol Higher alcohols such as isostearyl alcohol and 2-octyldodecanol; capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, coconut oil fatty acid, isostearyl acid, isopalmitic acid, etc. Higher fatty acids: octyldodecyl myristate, hexyl laurate, cetyl lactate, propylene glycol monostearate, oleyl oleate, hexadecyl 2-ethylhexanoate, isononyl isononanoate, trideon isononanoate Esters such as sil; other examples include isostearyl glyceryl ether and polyoxypropylene butyl ether. Furthermore, conditioning components such as amino-modified silicone, amino polyether-modified silicone, polyether-modified silicone, epoxy-modified silicone, fluorine-modified silicone, alkyl-modified silicone, and oxazoline-modified silicone can be included.

  Examples of the aqueous conditioning component include glycerin, sorbitol, 1,3-butylene glycol, dipropylene glycol, propylene glycol and other polyhydric alcohols, polyethylene glycol, pyrrolidone carboxylic acid and the like.

  The set polymer is useful for improving hair styling, adjusting viscosity, stability, improving adhesion when applied to hair, and the like. For example, polyvinyl pyrrolidone, vinyl pyrrolidone / vinyl acetate copolymer, vinyl pyrrolidone / vinyl acetate / Vinyl propionate terpolymer, vinyl pyrrolidone / alkylamino acrylate (quaternary chloride) copolymer, vinyl pyrrolidone / acrylate / (meth) acrylic acid copolymer, vinyl pyrrolidone / alkyl amino acrylate / vinyl caprolactam copolymer Polyvinyl pyrrolidone polymer compounds such as methyl vinyl ether / alkyl maleic anhydride alkyl half ester copolymer, etc .; Acid vinyl ether polymer compounds such as vinyl acetate / crotonic acid copolymer, vinyl acetate / crotonic acid / vinyl neodecanoate copolymer Coalescence, vinyl acetate / black Acidic polyvinyl acetate polymer such as acid / vinyl propionate copolymer; (meth) acrylic acid / (meth) acrylic ester copolymer, acrylic acid / alkyl acrylate / alkyl acrylamide copolymer, etc. Acidic acrylic polymer of N-methacryloylethyl-N, N-dimethylammonium / α-N-methylcarboxybetaine / butyl methacrylate copolymer, hydroxypropyl acrylate / butylaminoethyl methacrylate / octylamide acrylate Amphoteric acrylic polymer compounds such as copolymers; Basic acrylic polymer compounds such as acrylamide / acrylic ester quaternary copolymers; Cellulose derivatives such as cationic cellulose derivatives; Hydroxypropyl chitosan, carboxymethyl chitin, carboxy Methyl chitosan etc. Such as chitin, chitosan derivatives.

  Furthermore, the hair cosmetic composition of the present invention includes various additives that are blended in normal hair cosmetic compositions, for example, surfactants, ultraviolet absorbers, moisturizers, and gloss-imparting agents, as long as the effects of the present invention are not impaired. , Pigments, fragrances and the like can be appropriately blended.

  The hair cosmetic is preferably non-aqueous, but may contain a small amount of water and a lower alcohol depending on the form and dosage form.

  The hair cosmetic composition of the present invention can be in the form of liquid or gel. Also, various dosage forms such as hair rinse, hair conditioner, hair treatment, hair pack, hair cream, conditioning mousse, hair mousse, hair spray, leave-on treatment and the like can be used. It is particularly suitable as a dosage form for use in hair care agents such as hair treatments and hair oils that are not washed away.

  When the hair cosmetic composition of the present invention is used as a hair spray agent, the hair cosmetic composition of the present invention is filled into a known pump spray container or aerosol container. Examples of the propellant used include liquefied gases such as alkanes having 1 to 5 carbon atoms and dimethyl ether; compressed gases such as air, nitrogen and carbon dioxide.

Examples 1-5 and Comparative Examples 1-3
Hair cosmetics having the formulations shown in Table 1 were prepared according to conventional methods and evaluated.

(Evaluation method)
10 panelists gave 10g of hair bundles 0.2g of hair cosmetics, "elongation when applied to palms and hair", "no stickiness", "smooth feel" and "hair unity" For the “feel”, sensory evaluation was performed in a five-step evaluation according to the following criteria. The average value of the evaluation is calculated. When the average value is 4.5 or more, it is very good (◎), when it is 3.5-4.4, it is good (○), when 2.5-3.4 is normal (△), when it is 2.4 or less It was determined to be defective (x).

(Evaluation criteria)
5; Good 4; Slightly good 3; Normal 2; Slightly bad 1; Bad

  Comparative Example 1 using dimethylpolysiloxane having a degree of polymerization of 3000 or more has setability (cohesiveness), but has poor stretchability and familiarity with the hair, either when applied (wet state) or when dried. But it felt bad. Comparative Example 2 containing no low viscosity silicone oil is particularly inferior in terms of smoothness. Moreover, the comparative example 3 which does not contain a cholesterol derivative was inferior especially in terms of softness.

Example 6 Hair Spray
(weight%)
High molecular weight dimethylpolysiloxane (n = 2600) 10
Isododecane remaining amount Cholesteryl isostearate 0.1
Methyl polysiloxane (5mm ² / s) 3
Perfume 0.08

  An aerosol can was filled with a mixed stock solution having the above composition and liquefied petroleum gas at a weight ratio of 60:40 to obtain a hair spray.

Claims (3)

It contains the following components (A) to (D), and the weight ratio of component (A) to component (B) in the composition was (A) / (B) = 0.5 / 99.5 to 50/50 A hair cosmetic wherein the total amount of components (A) + (B) is 70% by weight or more in the composition.
(A) High molecular silicone represented by the following general formula (1)
[Wherein, R ¹ represents a methyl group or a part thereof represents a phenyl group, R ² represents a methyl group or a hydroxyl group, and n represents a number of 1000 to 2900. ]
(B) Branched or straight chain hydrocarbon oil having 8 to 18 carbon atoms
(C) At least one selected from the group consisting of cholesteryl stearate, cholesteryl oleate, cholesteryl hydroxystearate, and a branched fatty acid cholesteryl ester represented by the following general formula (2)
[ Wherein R ³ represents a saturated branched aliphatic hydrocarbon group having a total of 11 to 27 carbon atoms. ]
(D) Low viscosity silicone oil with a viscosity of 5-20 mm ² / s (25 ° C )   Furthermore, the hair cosmetics of Claim 1 containing a component (E) vegetable oil.   The hair cosmetic composition according to claim 1 or 2, which is non-aqueous.