GB2242129A - Hair cosmetics containing silk derivatives - Google Patents

Abstract

A hair cosmetic composition comprises: A water-soluble silk peptide, and One or more polyoxyalkyleneglycolethers, or polyoxyalkylene alkylglucosides.

Description

TITLE OF THE INVENTION HAIR COSMETIC COMPOSITION BACKGROUND OF THE INVENTION 1) Field of the Invention: This invention relates to a hair cosmetic composition and more particularly, to a hair cosmetic composition having excellent hair setting property and capable of imparting smoothness and softness to the hair.

2) Description of the Background Art: Hair cosmetic compositions for setting or styling the hair include pomades, hair oils, hair creams, hair liquids, setting lotions, styling mousses.

These compositions are generally blended with oily substances or polymers for the purpose of imparting hairsetting ability. Conventional hair cosmetic compositions which contain oily substances or polymers, however, are accompanied by unagreeable "sticky" feel during or after the use of them, or give a rough feeling of the hair after styled.

In order to obtain the smoothness and the moistureretaining property of hair fibers, solubilized peptides such as solubilized keratin and solubilized silk peptides have conventionally been blended. Such compositions have an improved feeling upon use, but their hair setting ability is still insufficient.

Accordingly, hair cosmetic compositions possessing good hair-setting or hair-styling ability, and capable of imparting smoothness and softness to the hair still stand demanded.

SUMMARY OF THE INVENTION An object of the invention is to solve the above mentioned problems, and primarily to provide a hair cosmetic composition comprising the following components (A) and (B): (A) Water-soluble silk peptide, and (B) One or more of members selected from the group consisting of polyoxyalkyleneglycolethers, their derivatives and polyoxyalkylene alkylglucosides.

DETAILED DESCRIPTION OF THE INVENTION AND PREFERRED EMBODIMENTS The water-soluble silk peptide, which is component (A) of this invention is obtainable from ordinary silk fibers, which are converted to water-soluble by hydrolysis, oxidative decomposition or by reductive decomposition.

Commercially available silk peptides can also be used.

Preferred molecular range for the solubilized silk peptides is from 300 to 50,000, and more preferably, 20,000 to 40,000. In other words, any can be used so far as the decomposed silk peptides are dispersible as transparent and in mecelles or soluble in 25"C purified water. The Water soluble silk peptides can be prepared according to the description of Japanese patent application laid-open (Kokai) No. 15905/1983.

The amount of component (A) is preferably from 1 to 10 wt% (hereinafter may simply referred to as Examples of polyoxyalkyleneglycolethers and their derivatives include those represented by the following formula (I):

wherein R1 means an alcohol residual group having 1 to 22 carbon atoms, sugaralcohol residual group having 1 to 22 carbon atoms, polyhydric alcohol residual group having 2 to 6 carbon atoms or a hydroxyl group, R2 represents a propylene group or a butylene group, and R3 means a hydrogen atom or a residual group of inorganic acid or an organic fatty acid, "a" and "b" independently mean an integer of 0 to 200 with "a" and "b" being not both equal to 0, "c" means a number, maximum of which being the hydroxyl group number of the alcohols which constitute group R1, and EO means an ethylene oxide.The moiety of -(R2O)a-(EO)b-R3 which is present in the number of "c" may be different from one another.

Examples of the polyoxyalkyleneglycolether include polyhydric alcohols such as glycerol, pentaerythritol, trimethylol propane, trimethylol ethane, sorbitane, diglycerol, sorbitol and mannitol; compounds obtained from addition polymerization where 0 to 200 moles, preferably 10 to 50 moles of propylene oxide (PO) or butylene oxide (BO) are added to 1 mole of sugaralcohols such as monosaccharides, disaccharides, origo saccharides or the like; and compounds obtained from random or block addition polymerization where 0 to 200 moles, preferably 1 to 50 moles of ethylene oxide (EO) is further polymerized therewith.

Among them, those preferred are compounds represented by the following formulae (II) to (V):

wherein R4 means an alkyl group having 1 to 22 carbon atoms, and average propylene oxide addition mole number "d" ranges from 10 to 100;

wherein average propylene oxide addition mole number (e+f) ranges from 2 to 100;

wherein average propylene oxide addition mole number (g+h+i) ranges from 3 to 100;

wherein average propylene oxide addition mole number (j+k+l+m+n+o) ranges from 2 to 100.

Examples of derivatives of polyoxyalkyleneglycolether include esterified compounds of the mentioned polyoxyalkyleneglycolether and an inorganic acid such as phosphoric acid or an organic acid such as a fatty acid which may be substituted by a linear or branched hydroxyl group having 2 to 23 carbon atoms or a saturated aliphatic dicarboxylic acid such as adipic acid, succinic acid, malic acid and tartaric acid.

The polyoxyalkyleneglycolethers and their derivatives to be used in this invention are commercially available from the market, examples of which include Unilube (manufactured by Nippon Yushi E.K.) and Paron EP (manufactured by Goo Chemical Industries K.K.).

An example of polyoxyalkylene alkylglucoside, which is component (B) of this invention is the compound represented by the following formula (VI): R5O(G)CH2O(CpH2pO)qH (\rI) wherein G means a reducing sugar residual group having 5 to 6 carbon atoms, R5 means an alkyl group having 1 to 18 carbon atoms, "p" is a number of from 1 to 3, and "q" is a number of from 1 to 500.

Among them, preferred ones are compounds of formula (VI) where G is a saccharide residual group derived from glucose, fluctose or galactose, R5 is alkyl having 1 to 8 carbon atoms and alkylene oxide average addition mole number "q" is from 5 to 50. Especially, polyoxypropylene ethylglucoside and polyoxypropylene methylglucoside are most preferred.

These polyoxyalkylene alkylglucosides are available from the market, and Glucopolyol (manufactured by Nippon Yushi K.K.) may be mentioned.

The polyoxyalkylene compounds and their derivatives which are component (B) of this invention are used solely or as a mixture of them. Preferably, they are incorporated in an amount of 0.01 to 30%, more preferably 1 to 15% based on the total amount of the hair cosmetic composition. Less amount than 0.01% cannot achieve the effect of this invention and excessive amount over 30% increases undesirable viscosity.

The hair cosmetic composition of this invention may further incorporate, beside the mentioned essential components, generally known cosmetic oils including glycerides such as castor oil, cacao oil, mink oil, avocado oil, and olive oil; waxes such as beeswax, spermaceti, lanolin, carnauba wax; alcohols such as cetyl alcohol, oleyl alcohol, hexadecyl alcohol, lauryl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyl dodecanol and polypropylene grlycol; esters such as isopropyl myristate, hexyl laurate, petal lactate, propylene glycol monostearate, oleyl oleate, hexadecyl 2-ethylhexanoate, octyl dodecyl myristate; silicone derivatives such as dimethylpolysiloxane, methylphenyl polysiloxane, polyether-modified silicone oil, epoxy-modified silicone oil, amino-modified silicone oil and alkyl-modified silicone oil. Furthermore, emulsifiers may also be incorporated in order to stabilize the emulsion of these oils. Examples of such emulsifiers include anionic, amphoteric, cationic and nonionic surfactants.

Other compatible components which are ordinarily used in the art, such as solvents, injection media, preservatives, antioxidants, colorants, perfumes or the like can also be incorporated.

The hair cosmetic compositions of this invention are prepared by known methods and formed into lotions, creams, gels, aerosol sprays, aerosol mousses or the like.

The hair cosmetic compositions of this invention possess excellent hair setting or styling property, and are capable of imparting agreeable smoothness and softness to the hair.

EXAMPLES This invention will now be explained b way of examples, which should not be construed as limiting the invention thereto.

Example 1: The hair cosmetic compositions as shown in Table 1 were prepared, and setting property, softness and smoothness of the hair were evaluated. The results are also shown in Table 1.

The evaluation method and the criteria of the evaluation are as follows: Setting PropertY Test composition was applied to a tress of shampooed hair. The maximum width of the tress after dried (natural dry, 25 C, C, 40% RH) was measured. Evaluation was made in comparison with a hair tress to which no compositions were applied.

The maximum width is smaller than nonapplied tress Equal maximum width Larger maximum width Softness and smoothness 20 g ( 1D cm) of a Japanese virgin hair tress which has never experienced cold-perming, bleaching etc. was provided. Predetermined amounts of the test compositions were applied thereto and blow-dried. An expert panel of 10 professionals organoleptically evaluated in terms of softness, smoothness and oiliness of the tress. The criteria for absolute evaluation are described below.

The evaluation was based on average points given by the members of the panel.

Evaluation

Very good Good Fair Bad Table 1 (%)

Invention Invention Invention Compara- Compara- Compara- Compara- Compara- Compara- Compara tive tive tive tive tive tive tive Product 1 Product 2 Product 3 product 1 Product 2 Product 3 Product 4 Product 5 Product 6 Product 7 Polyoxypropylene(30) Polyoxyethylene(30)butylether 2.0 - - 2.0 - - 2.0 - - Polyoxypropylene(30)butylether - 2.0 - - 2.0 - - - - phosphate Polyoxypropylene(10)sorbitol ether - - 2.0 - - 2.0 - - - 2.0 Stearyl alcohol - - - - - - 1.0 - - Amphoteric polymer (Yukaformer AM75, by Mitsubishi Yuka K.K.) - - - - - - - 2.0 - 0.5 Silk peptide (Silkgen G Soluble K 3.0 3.0 3.0 - - - - 8.0 3.0 by Ichimaru Pharcos Co., Ltd.) Triethanolamine - 0.1 - - 0.1 - - - - Ethanol 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 Water balance balance balance balance balance balance balance balance balance balance Setting Property # # # # # # # # x # Softness # # # x # # x x # x Smoothness # # # x # x # x # x Test Example 1:: Invention product No. 2 of Example 1 and Comparative product No. 8 having the following formula were compared and evaluated by a panel of 10 professionals in terms of hair-setting property and softness and smoothness of the hair.

[Formulation of Comparative Product No. 8] Polyoxypropylene (30) butylether phosphate 2.0% Keratin hydrolysate (MW=2,000) 3.0 Ethanol 10.0 Water balance Total 100.0 Table 2 Invention Product Comparative No. 2 is better Hard to say Product No.

8 is better Setting Property 1 9 0 Softness 8 1 1 Smoothness 6 3 1 Example 2: A foaming hair styling composition of the following formula was prepared.

Formulation Dipropyleneglycol 1.0% Methylphenylpolysiloxane 1.0 Liquid paraffin 2.0 Polyoxyethylene sorbitane monostearate 0.2 Polyoxypropylene (20) polyoxyethylene (10) butylether phosphate 2.0 Triethanolamine 0.1 Silk peptide (Silkgen G Soluble X, by Ichimaru Pharcos Co., Ltd.) Ethanol 10.0 Perfume 0.1 Methyl paraben 0.1 Injection medium (LPG) 10.0 Water balance Total 100.0 Example 3: A styling lotion of the following formula was prepared.

Formulation Dimethylpolysiloxane (1,000 cs) 1.5% Polyether-modified silicone (KF 353A, by Shin-etsu Kagaku K.K.) 0.5 Acrylic resin 1.0 Silk peptide (Silkgen G Soluble X, by Ichimaru Pharcos Co., Ltd.) 15.0 Polyoxypropylene (36) polyoxyethylene (36) butylether 2.0 Ethanol 30.0 Perfume 0.1 Water balance Total 100.0 Example 4: A brushing spray of the following formula was prepared.

Formulation Polyoxypropylene (10) glycerylether 3.0% Cyclic silicone (F 994, by Shin-etsu Kagaku K.K.) 3.0 Dimethylpolysiloxane (1,000 cs) 0.3 Silk peptide (Silkgen G soluble X, by Ichimaru Pharcos Co., Ltd.) 5.0 Ethanol balance Perfume 0.08 Freon 12 37.91 Freon 11 37.91 Total 100.0 Example 5: A styling mousse of the following formula was prepared.

Formulation Methylphenylpolysiloxane (KF 54, by Shin-etsu Kagaku K.K.) 1.0% Polyether-modified silicone (KF 353A, by Shin-etsu Kagaku K.K.) 1.5 Plasize L53P (by Goo Chemical Industries K.K.) 8.0 Polyoxyethylene (10) hexadecylether 1.0 Silk peptide (Silkgen G Soluble K, by Ichimaru Pharcos Co., Ltd.) 7.0 Ethanol 5.0 Perfume 0.2 Colorant 0.01 Water balance LPG (4.0/cm2G, 20"C) 10.0 Total 100.0

Claims (7)

1. What is Claimed is: 1. A hair cosmetic composition comprising the following components (A) and (B): (A) A water-soluble silk peptide, and (B) One or more of the members selected from the group consisting of polyoxyalkyleneglycolethers, their derivatives and polyoxyalkylene alkylglucosides.
2. 2. The hair cosmetic composition according to Claim 1, wherein said component (A) is made water-soluble by the hydrolysis, oxidative decomposition or bp reductive decomposition of silk fibers.
3. 3. The hair cosmetic composition according to Claim 1, wherein said component (B) is a polyoxyalkyleneglycolether or its derivative represented by the formula (I):

   wherein R1 means an alcohol residual group having 1 to 22 carbon atoms, sugaralcohol residual group having 1 to 22 carbon atoms, polyhydric alcohol residual group having 2 to 6 carbon atoms or a hydroxyl group, R2 represents a propylene group or a butylene group, and R3 means a hydrogen atom or an acid residual group of inorganic acid or an organic fatty acid, "a" and "b"i independently mean an integer of 0 to 200 with "a" and "b" being not both equal to 0, "c" means a number, maximum of which being the hydroxyl group number of the alcohols which constitute group R1, EO means an ethylene oxide, -(R2O)a~(EO)b-R3, present in the number of "c", being same or different from one another.
4. 4. The hair cosmetic composition according to Claim 1, wherein said component (B) is a polyoxyalkylene alkylglucoside represented by the following formula (VI): R5O(G)CH2O(CpH2pO) q-H (VI) wherein G means a reducing sugar residual having 5 to 6 carbon atoms, R5 means an alkyl group having 1 to 18 carbon atoms, "p" is a number of from 1 to 3, and "q" is a number of from 1 to 500.
5. 5. The hair cosmetic composition according to Claim 1, wherein the amount of said component (A) ranges from 1 to 10 wt% of the total amount of the composition.
6. 6. The hair cosmetic composition according to Claim 1, wherein the amount of said component (B) ranges from 0.01 to 30 wt% of the total amount of the composition.
7. 7. A hair cosmetic composition as claimed in Claim 1 and substantially as described in the Examples.