JPH03264514A - Emulsifiable type cosmetic - Google Patents

Abstract

PURPOSE:To obtain an emulsifiable type cosmetic, containing a specific polyoxyalkylene alkylglycoside, lipophilic type nonionic surfactant, oily substance and water, excellent in emulsification stability and applicable to hair, skin, etc. CONSTITUTION:The objective substance containing 0.1-10wt.% polyoxyalkylene alkylglycoside as an essential ingredient, 0.05-10wt.% lipophilic type nonionic surfactant (e.g. sorbitan tristearate) having <=5.0 HLB, 0.05-60wt.% oily substance and 20-95wt.% water. The polyoxyalkylene alkylglycoside is obtained by adding 1-30mol 2C and/or 3C alkylene oxide to an alkylglycoside having a 1-4C alkyl group bound to O at the 1-position of glucose. A cationic surfactant, phosphoric acid esters, hydrophilic alcohols, pH adjustor, water-soluble polymer compound, etc., in addition to the essential ingredient are suitably blended and prepared to afford the objective substance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an emulsified cosmetic that has excellent emulsion stability and is applicable to hair, skin, etc.

[Prior art and problems to be solved by the invention] Conventionally, emulsified cosmetics for hair or skin, such as hair rinses, hair lotions, and gel-like hair creams, have been widely used. Cosmetics have the ability to maintain their emulsification even when stored at high temperatures for long periods of time.
It is desirable to maintain a stable emulsified state.

Therefore, although various methods for stabilizing the emulsion of emulsified cosmetics have been proposed in the past, there is a need for a method that more effectively achieves emulsion stabilization of emulsified cosmetics. In addition, emulsified cosmetics are required to have excellent blending properties and ease of spreading on the hair due to their original purpose.

[Means and effects for solving the problem] As a result of intensive studies in order to meet the above-mentioned needs, the present inventors have determined that a linear or branched alkyl group having 1 to 4 carbon atoms is added to the oxygen atom at the 1st position of glucose. HL B is a polyoxyalkylene alkyl glucoside obtained by adding ↓ to 30 moles of an alkylene oxide having 2 and/or 3 carbon atoms to an alkyl glucoside bonded to
When used in combination with a lipophilic nonionic surfactant of 5.0 or less, the emulsion stability of the emulsified cosmetic obtained by emulsifying an oily substance in water is significantly increased. Even if stored for a long period of time at high temperatures, the emulsification will hardly break down, and the resulting emulsified cosmetic will blend well with the hair.
It was discovered that it has excellent elongation, and this led to the present invention.

Therefore, the present invention provides (A) the above polyoxyalkylene alkyl glucoside, (B) a lipophilic nonionic surfactant with an HLB of 5.0 or less, (C) an oily substance, and (D) an emulsified type containing water. Provide cosmetics.

The present invention will be explained in more detail below.

In the emulsified cosmetic of the present invention, the polyoxyalkylene alkyl glucoside used as component (A) is an alkyl glucoside in which a linear or branched alkyl group having 1 to 4 carbon atoms is bonded to the oxygen atom at the 1-position of glucose. Any compound with 1 to 30 moles of 3-alkylene oxide having 2 and/or 3 carbon atoms added to it can be used; a specific example is POE.
(10) Methyl glucoside, POE (20) Propyl glucoside, POP (15) Methyl glucoside, POE (
5) POP(10) methyl glucoside and the like.

In addition, the said polyoxyalkylene alkyl glucoside may be used individually or in combination of 2 or more types. Further, the amount to be blended can be selected variously, but it is usually 0.1 to 10% (weight %, same hereinafter), particularly 0.1 to 2% of the entire composition.

Next, the lipophilic nonionic surfactant of component (B) has an HLB of 5.0 or less, more preferably 2.0 to 5.0, such as sorbitan sesquistearate, sorbitan Sorbitan fatty acid esters such as tristearate, sorbitan monooleate, sorbitan sesquitol oil fatty acid ester, and sorbitan triolate.

POE (6 mol) sorbitol hexastearate.

=4- Monoglycerides such as glycer monostearate and glyceryl monomyristate, propylene glycol fatty acid esters such as propylene glycol monostearate, P
OE (2 mol) monostearate, POE (2 mol) monooleate, ethylene glycol monostearate, diethylene glycol stearate, POE (2 mol) nonylphenyl ether, POE (3 mol) castor oil, P
Examples include OE nonylphenyl formaldehyde condensates, and these can be used alone or in combination of two or more.

The amount of the above-mentioned lipophilic nonionic surfactant can be selected in various ways, but it is usually 0.05 to 10% of the total composition, especially O.
It is 1 to 5%.

The oily substance of component (C) can be selected depending on the type of cosmetic, but in particular for hair cosmetics,
Examples include hydrocarbons with 8 to 60 carbon atoms, fatty acids with 14 to 22 carbon atoms, higher alcohols with 14 to 30 carbon atoms, esters with 16 to 60 carbon atoms, polysiloxanes, etc. By blending these oily ingredients, hair combability is improved. It can improve the texture and give a smooth and moist feeling.

Examples of the above-mentioned oily components are as follows.

(b) Cxs/Cso hydrocarbon liquid paraffin (viscosity 70-350 seconds), squalane (
Czo H62), α-olefin oligomer (C
s t C211 α-olefin polymer (mainly trimer), vaseline, etc.

(b) Fatty acid of 0141C2□ Stearic acid, oleic acid, myristic acid, etc.

(c) C14t Cs o higher alcohols such as cetanol, stearyl alcohol, oleyl alcohol, isosetanol, etc.

(d) C1G ICco ester isopropyl myristate (IPM), purecellin, olive oil, castor oil, etc.

(e) Polysiloxane dimethyl polysiloxane (viscosity 20-3,000,00
0cs/25℃ is preferable, KF manufactured by Shin-Etsu Chemical Co., Ltd.
-96), methylphenyl polysilicon 5-6-loxane (same as above, KF-56), organopolysiloxane polyoxyalkylene copolymer (same as above, KF-351)
, 352, 610, etc.).

The blending amount of these oily components is usually 0.05 to 60
%, but the above (non) to (d) components are 0.05 to 10
%, component (e) can be 0.05 to 20%.

Further, the amount of water used as component (D) can be varied, but is usually 20 to 95%.

In addition to the above-mentioned essential ingredients, the emulsified cosmetic according to the present invention includes:
Commonly used ingredients can be blended depending on the type, etc., and the following can be exemplified as such ingredients.

(a) Cationic activator By incorporating a cationic activator, when applied to hair, it is possible to impart ease of combing and smoothness.

In this case, the cationic activator may be of the following general formula [wherein R□ or R1, R2 is an alkyl group, alkenyl group or hydroxyalkyl group having 10 to 24 carbon atoms,
or -R(OCR2CH2)n (However, R has 1 carbon number
0 to 24 alkyl group or hydroxyalkyl group,
n is an integer of 1 to 10). Also, R2, R3, R.

or R3 and R4 are an alkyl group having 1 to 3 carbon atoms, →CH
CH20ThH (wherein R5 is a hydrogen atom or a methyl group, m is an integer of 1 to 5), a benzyl group, or a cinnamyl group. X is a halogen atom or an alkyl sulfate group having 1 or 2 carbon atoms. ] Compounds are preferably used.

The amount of the cation activator to be added may be 0.05 to 20%, usually 0.5 to 5%.

(b) Phosphoric acid esters (a) It is used alone or in combination with a cationic activator, such as in a rinse. Its blending amount is usually 0.1
It is about 5% and can provide good moisturizing properties and shine to the hair.

Such a phosphoric acid ester is represented by the following general formula % (wherein R5 is a hydrogen atom or a monovalent hydrocarbon group having 5 to 20 carbon atoms, Y is a divalent hydrocarbon group having 2 to 3 carbon atoms, and M is a divalent hydrocarbon group having 2 to 3 carbon atoms. A hydrogen atom, an alkali metal or (hydroxy)alkyl-substituted ammonium, Z represents M or R6→○-Y% group, and n is an integer of O to 60) are preferably used.

(c) Hydrophilic alcohols Ethanol, glycerin, sorbitol, diethylene gelicol, dipropylene glycol, polyethylene glycol, polypropylene polyethylene glycol, hexylene glycol, etc. can be used.

(d) pH adjuster To adjust the pH to 3 to 8, which is close to the physiological pH of the scalp, use organic acids such as citric acid, inorganic acids such as phosphoric acid, inorganic alkalis such as sodium hydroxide, organic amines such as triethanolamine, etc. can be blended.

(e) Water-soluble polymer compounds: cationic polymers such as cationized cellulose and Marquat 5500, anionic polymers such as xanthan gum, carrageenan, sulfated cellulose, poly(meth)acrylic acid copolymers, and Yukahomer ■.

Ampholytic polymers such as chitin, nonionic polymers such as hydroxyethyl cellulose 2-hydroxyethylated polyacrylic ester, etc. can be blended.

(F) Surfactant (B) In addition to the lipophilic nonionic surfactant component, other active agents may be used as necessary, such as polyoxyethylene sorbitan fatty acid ester, ethylene oxide adduct of glycerin or propylene glycol fatty acid ester. , polyethylene glycol fatty acids, poly90 oxyethylene alkyl ethers, polyoxypropylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene (hardened) castor oil derivatives, polyoxyalkylamines, polyoxyfatty acid amides, and other nonionic surfactants; N-acyl amino acid salts, anionic surfactants such as alkylsulfosuccinic acid, amphoteric surfactants such as lauryldimethylaminoacetic acid betaine, and the like may be blended.

Furthermore, bactericidal agents, anti-dandruff agents, anti-inflammatory agents, hair-growth ingredients, plant extracts, fragrances, pigments, and the like can be added as necessary.

〔Effect of the invention〕

The emulsified cosmetic according to the present invention has excellent emulsion stabilization, and the emulsified state remains stable even when stored at high temperatures for a long period of time.
It blends well with hair and stretches easily.

EXAMPLES Hereinafter, the present invention will be specifically illustrated by examples and comparative examples, but the present invention is not limited to the following examples.

[Example, comparative example]

A 0/W type skin cosmetic having the composition shown in Table 1 was prepared, and its emulsion stability and ease of spreading onto hair were evaluated by the following methods. The results are also listed in Table 1.

[Storage stability]

Each of the prepared samples was filled into a glass tube with an inner diameter of 3 (7) and a height of 20 mm (the bottom was closed with a rubber stopper) to a height of 180 mm, and stored at 50 °C for 1 month to determine the presence or absence of a transparent layer separated into the upper layer. was determined.

O: Almost no separation observed.

×: A separated layer is clearly observed.

[Easy to spread on hair]

After dampening the 25c+n, Log hair strands and squeezing them lightly,
2 g of the prepared sample was applied to the roots of the hair, and the ease of spreading the hair in the direction of the tips of the hair with fingers was sensory evaluated.

○: Extremely good spreadability △: Good spreadability ×: Poor spreadability

Claims (1)

[Claims] 1. (A) The oxygen atom at the 1st position of glucose has 1 to 4 carbon atoms.
A polyoxyalkylene alkyl glucoside obtained by adding 1 to 30 moles of an alkylene oxide having 2 and/or 3 carbon atoms to an alkyl glucoside bonded with a linear or branched alkyl group, (B) a lipophilic compound with an HLB of 5.0 or less An emulsified cosmetic comprising: a nonionic surfactant; (C) an oily substance; and (D) water.