JPH02115117A - Bath additive - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bath additive with significantly improved skin care effects.

[Conventional technology]

Bathing has various effects, such as cleaning the body, warming not only the limbs but also the body to the core, and relaxing the mind, and is an indispensable act in daily life.

On the other hand, many people complain of loss of oil from their skin due to bathing, especially dry skin after bathing. Currently, such people usually use various skin care products such as lotions and creams after bathing in order to suppress dryness of their skin after bathing. However, when using skin care products, it takes effort to apply them, and it is difficult for elderly people in particular to apply skin care products to every corner of their bodies.

Therefore, solutions to the above-mentioned problems have been studied in bath additives, and oil and heat insulating agents have been added to bath additives. By using such bath additives, skin care while taking a bath can save the effort of applying lotions, creams, etc., and the whole body can be cared for.

[Problem to be solved by the invention]

However, even when bath additives containing oil-based ingredients such as oil are used, the skin care effects may be insufficient.
In addition, when using bath additives containing oily ingredients in sufficient amounts to exert their effects, the oily ingredients may remain on the skin more than necessary after bathing, resulting in a unique sticky feeling. There was a problem.

Therefore, an object of the present invention is to provide a bath additive that sufficiently exhibits skin care effects without adding an excessive amount of oily ingredients to the extent that the above problems occur. ) As a result of extensive studies, the present inventors have found that by incorporating a specific ester as an oily component, a bath additive that achieves the above objectives, that is, a bath additive with significantly improved skin care effects, can be obtained. I found out.

The present invention was made based on the above findings, and provides a bath additive containing difatty acid glycerin ester as an oily component.

Hereinafter, the bath additive of the present invention will be explained in detail.

As the difatty acid glycerin ester used in the bath additive of the present invention, those having a melting point of 30°C or higher are preferably used. These fatty acid glycerin esters ( diester content of 50% or more) by separation and purification by molecular distillation, solvent extraction, etc. Behind these, 2
Particularly preferred are IJffl or 2 fil diglycerol esters of fatty acids such as -ethylhexanoic acid, myristic acid, oleic acid, isostearic acid.

In addition, oil components other than the difatty acid glycerin esters used in the bath additive of the present invention include oils and fats, waxes, hydrocarbons, higher fatty acids, higher alcohols, esters, silicone oils, and Examples include interkeratinocyte lipids and substances with similar structures thereof, and interkeratinocyte lipids are particularly preferred from the viewpoint of skin care effects.

Examples of the interkeratinocyte lipids include ceramide, sugar ceramide, cholesterol, fat BhM, and cholesteryl ester, and among these, ceramide, sugar ceramide, and cholesteryl ester are preferred. These may be extracted from natural products such as mammalian brain tissues, or may be obtained synthetically.

Examples of the cholesteryl esters include cholesteryl esters of saturated or unsaturated linear or branched fatty acids having 8 to 20 carbon atoms.
Preferred are branched fatty acid cholesteryl esters.

Preferred examples of the above-mentioned interkeratinocyte lipid-like structure ITs include substances with a similar structure to ceramide.

A substance with a structure similar to ceramide is a lipid derivative that has two long-chain hydrocarbon groups and an OH group and an amide group between them, and the molecule can assume a uniplanar conformation. To tell. As such a compound, for example, the following general formula (1)
The following can be mentioned.

R’OCH.

(In the formula, R' represents a straight chain or branched saturated or unsaturated hydrocarbon group having 10 to 26 carbon atoms, and R2 represents a long chain or branched saturated or unsaturated hydrocarbon group having 9 to 25 carbon atoms. In addition, examples of oily components other than those mentioned above that can be used in the bath additive of the present invention include the following.

・Oils and fats Natural oils and fats such as Owaura, bran oil, jojoba oil, avocado oil, almond oil, olive oil, cacao butter, sesame oil, Basikura, castor oil, coconut oil, mink oil, beef tallow, pork fat, etc. Hydrogenated oils obtained by hydrogenating fats and oils and synthetic triglycerides such as myristic acid glyceride and 2-ethylhexanoic acid glyceride.

・Wax Carnauba wax, whale wax, beeswax, lanolin, etc.

- Hydrocarbons CI-1□CII 20 H Paraffin sulfate, petrolatum, paraffin microcrystalline wax, ceresin, squalane, blistane, etc.

・Higher fatty acids lauric acid, myristic acid, valmitic acid, stearic acid, hehenic acid, oleic acid, linoleic acid, linolic acid, lanolinic acid, instearic acid, etc.

・Higher alcohols lauryl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, lanolin alcohol,
Cholesterol, 2-hexyldecanol, etc.

・Esters myristyl lactate, cetyl lactate, isopropyl myristate, myristyl myristate, impropyl palmate, isopropyl adipate, butyl stearate,
Decyl oleate etc.

The above-mentioned oily components can be used alone or in combination of two or more.

The blending ratio (weight ratio) of the difatty acid glycerin ester and the other oily components in the bath additive of the present invention is preferably the former:the latter -1:1-1:50.

The amount of the difatty acid glycerin ester is preferably 0.1 in 100 parts by weight of the bath additive (total composition components).
~50 parts by weight, and when using interkeratinocyte lipids and/or their derivatives as other oily components, for example, 0.1 to 20 times the amount of other oily components (by weight)
It is particularly preferable to mix the amount in a range of 0.1 to 10 times.

The bath additive of the present invention further contains a dispersant or emulsifier for oil-based components such as a water-soluble polymer and a surfactant, if necessary, in addition to the above-mentioned essential components, so that when the bath additive is dissolved in a bath, the oil-based component Prevents ingredients from floating on the water surface and makes the bath cloudy,
0.01% water) Transparency of guest performance is 40cm-1
- not more than 20 centimeters, preferably not more than 20 centimeters,
It can also create a luxurious image of a milk bath.

The water-soluble polymers include sodium alginate, propylene glycol alginate, gum arabic, xanthan gum, pectin, tragacanth, sodium carboxyl methylcellulose, methylcellulose, carboxyvinyl polymer polyethylene glycol, polyvinyl alcohol, polyvinylpyrrolidone, milk protein, fattening protein, Examples include gelatin, egg protein, sodium caseinate, whey protein, etc., but gums such as gum arabic and xantanga 1, and water-soluble proteins such as sodium caseinate and whey protein are preferred.

Further, as the above-mentioned surfactant, anionic, cationic, nonionic, natural or synthetic surfactants can be used.

These dispersants or emulsifiers for oily components are preferably blended in an amount of 5 to 100 parts by weight per 100 parts by weight of the oily components in the bath additive.

The bath additives of the present invention may further contain the following publicly known bath additive raw materials that are commonly used in bath additives; however, the bath additive raw materials that can be blended are not limited to those exemplified. .

(a) Inorganic salts sodium chloride, sodium hydrogen carbonate, sodium carbonate, borax, sodium sulfate, sodium sulfide, sesquicarbonate! - Sodium nitrate, sodium thiosulfate, sodium polyphosphate, sodium phosphate, calcium oxide, magnesium oxide, calcium carbonate, magnesium carbonate, potassium chloride, potassium sulfide, etc.

(a) Inorganic acid length n Boric acid, metasilicic acid, silicic anhydride, etc.

(1) Organic acids such as succinic acid, fumaric acid, malic acid, tartaric acid, citric acid, benzoic acid, etc.

(1) Herbal medicines fennel, iris, chamomile, cinnamon, safflower, tJ medicine, ginger, iris, japonica,!・Float, chimpi, sojura, valerian, beak, spruce, thin cargo,
Bukuriyou, ginseng, etc.

Food additives such as pigments yellow No. 4, blue no. Natural pigments etc. that are recognized as

(Power) Vitamins Vitamin A1 Vitamin C1 Vitamin D1 Vitamin E etc.

(g) Fragrances (ri) Other sulfur, yunohana, mineral sand, mica bundle, neutral clay, rice bran, bactericides, preservatives, and other ingredients necessary for formulation.

The bath additive of the present invention is prepared by adding and mixing the optional components as necessary to the essential components. In this case, the blending amount of the optional component is preferably 0 to 2000 parts by weight, based on 100 parts by weight of the essential component of the bath additive of the present invention.

In addition, an appropriate amount of water, preferably about 50 to 500% by weight of the oily component, is added to the bath additive of the present invention prepared as described above.
More preferably, it may be in the form of an emulsion in which 100 to 400% by weight of water is added and emulsified. In addition, the bath additive of the present invention can be made into various dosage forms (Form B), such as powder, granule, tablet, and liquid, similarly to known bath additives.

The bath additive of the present invention is used by being added to the bath during bathing, and in that case, the concentration of oily components is usually 10 to 500
It is preferable to determine the amount used per time so that it becomes pp+*, especially 20 to 100 ppn+.

[Example] Examples, comparative examples, and reference test examples of the present invention are shown below to specifically clarify the effects of the present invention.

Example 1.2 and Comparative Examples Bath additives were prepared according to the formulations shown in Table 1 below. Each of the prepared bath additives was used by 20 panelists in the usual manner, and each bath additive was evaluated for its overall evaluation as a bath additive (overall feeling of use), and the moist and sticky feeling of the skin after bathing. Ta.

The results are shown in Table 2 below.

Table 1 The unit of numerical values other than the amount used per time is parts by weight.

Table 2 Example 3 18 parts by weight of liquid paraffin, 2 parts by weight of l-stearoyl-3-myristoylglycerol, 10 parts by weight of gum arabic and 40 parts by weight of dextrin, 20 parts by weight of water
The emulsion was spray-dried to obtain "ζ" powder. To this powder, 10 weight parts of sodium sulfate and trace amounts of colorants and fragrances were added and mixed uniformly. A bath additive having a single use amount of 30ε was obtained.

Reference test example Diffusion of difatty acid glycerin ester on the skin Liquid paraffin, jojoba oil,
10 μl of each sample of 2-ethylhexanoic acid triglyceride, 2-ethylhexanoic acid diglyceride, and octanoic acid diglyceride was left still using a micropipette,
It was left for 5 minutes. For each sample (oil), after carefully blotting out the excess oil that did not spread on the skin, apply a piece of high-quality paper to the skin where Ura has spread, transfer the diffused oil to the high-quality paper, and remove the transferred oil. The outline was quickly drawn in oil and then transferred onto another piece of high-quality paper.The paper was then cut out along the outline and its weight was precisely measured. This test was conducted on 7 subjects, and the average weight value of each sample was measured. The results are shown in Table 3 below.

Table 3 Procedural Amendment December 1988 280 As is clear from the results shown in Table 3 above, it can be seen that difatty acid glycerin ester has good diffusivity on the skin.

〔Effect of the invention〕

According to the bath additive of the present invention, several remarkable skin care effects can be achieved without adding an excessive amount of the oily component M.

■Representation of the case Patent application Sho (i3-26 (8391 No. 2) Name of the invention Bath salts 3, Person making the amendment Relationship to the case Patent applicant (091) Kao Co., Ltd. 4, Agent Minato-ku, Tokyo Akasaka 9-chome (J number 29 Pacific Nogizaka 601 Voluntary amendment (amended within 1 year and 3 months from the filing date) 7. Contents of amendment (1) "Paraffin sulfate" on the bottom line of page 6 is changed to "liquid paraffin" correction.

(2) Corrected "Instearin" on page 7, line 6 to "Isostearin".

(3) “Cinnamon” on page 10, line 15 was corrected to “cinnamon”.

that's all

Claims (2)

[Claims] (1) A bath additive containing difatty acid glycerin ester as an oily component. (2) The oily component contains interkeratinocyte lipids,
The bath additive according to claim (1).