JPS635007B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a hair cosmetic composition that provides a good feel to the set hair and excellent curl retention ability. Cold perm treatment is widely used to give waves and curls to hair. Furthermore, when setting hair, various hair cosmetics are used for the purpose of setting the hair as desired and maintaining a beautiful finish. In addition, for hair that has not been cold permed, temporary waves,
Hair cosmetics are also used to give curls or prevent hair from becoming unruly. In hair cosmetics used for these purposes, hair fixing polymer compounds are used to provide excellent curl retention. Such hair fixing polymer compounds are used by dissolving them in an appropriate solvent such as water, lower alcohol, or a water-lower alcohol mixture, but generally, the polymer compounds used as fixatives have a surface tension that is lower than the surface tension of the hair. Because the critical surface tension is higher than the critical surface tension of hair, it does not form a uniform film on the hair. As a result, curl retention is poor, and
The feel of the hair is also bad. In order to improve these shortcomings, the addition of cosmetic oil-based substances, silicone oils, and surfactants has been considered. No additive has been found that provides this. This invention was made under these circumstances, and its purpose is to provide a hair make-up that gives the set hair an excellent feel without being sticky or stiff, and has excellent curl retention. An object of the present invention is to provide a food composition. That is, the present invention provides a hair cosmetic composition containing a water-soluble vinyl or vinylidene polymer and a mono-N long-chain acyl basic amino acid lower alkyl ester salt. As the water-soluble vinyl or vinylidene polymer, those used in conventional hair cosmetic compositions having a hair fixing effect such as setting lotions and hair sprays can be used. The following can be mentioned as preferred examples. (a) Polyvinylpyrrolidone-based water-soluble polymer compounds such as polyvinylpyrrolidone and a copolymer of vinylpyrrolidone and vinyl acetate. (b) Acidic polyvinyl ether water-soluble polymer compounds such as lower alkyl half esters of copolymers of methyl vinyl ether and maleic anhydride. (c) Acidic polyvinyl acetate-based water-soluble polymer compounds such as copolymers of vinyl acetate and crotonic acid. (d) Acidic acrylic water-soluble polymer compounds such as acrylic acid alkyl ester-methacrylic acid alkyl ester copolymerized by copolymerizing a small amount of acrylic acid or methacrylic acid. (e) Carboxyvinyl polymer. Note that among these water-soluble polymer compounds, those having acid groups are preferably used after neutralizing a part or the front part of the acid groups. The alkali used for neutralization is not particularly limited, but preferred examples include triethanolamine, 2-amino-2-methyl-propanol, 2-amino-2-methyl-1,3-propanediol, triisopropanolamine, etc. Can be done. The blending amount of the water-soluble vinyl or vinylidene polymer is preferably based on the total amount of the hair cosmetic composition.
The amount is 0.01 to 10.0% by weight, more preferably 0.1 to 5% by weight. If the amount is less than 0.01%, there will be little effect as a hair fixative, and if it exceeds 10.0%, the adhesiveness will become too strong, which is not preferable. The second essential component of the hair cosmetic composition of this invention is a mono-N long chain acyl basic amino acid lower alkyl ester salt. By adding this to the above-mentioned water-soluble vinyl or vinylidene polymer, the curl holding power of the hair after setting is significantly improved and the stiff feel is reduced. This mono-N long-chain acyl basic amino acid lower alkyl ester salt is made from basic amino acids such as ornithine, lysine, arginine, etc., and is prepared by the method described in, for example, Japanese Patent Publication No. 11926/1973 or Japanese Patent Publication No. 9529/1973. It can be easily manufactured. As the basic amino acid component of the mono-N long chain acyl basic amino acid lower alkyl ester salt, in addition to natural amino acids such as ornithine, lysine, and arginine, synthetic amino acids such as α,β-diaminobutyric acid are also used. These may be either optically active or racemic. The acyl group of the mono-N long chain acyl basic amino acid lower alkyl ester salt is a saturated or unsaturated natural or synthetic fatty acid residue having 8 to 22 carbon atoms, such as lauroyl group, myristoyl group, palmitoyl group, stearoyl group. In addition to single fatty acid residues such as, natural mixed fatty acid residues such as coconut oil fatty acid residues and beef tallow fatty acid residues may be used. The lower alkyl ester components of the mono-N long chain acyl basic amino acid lower alkyl ester salt include methyl ester, ethyl ester, propyl ester, butyl ester, pentyl ester,
Hexyl esters, heptyl esters, octyl esters are suitable. Salts of mono-N long chain acyl basic amino acid lower alkyl ester salts include inorganic acid salts such as hydrochloride and sulfate, or acetate, tartrate, citrate, and p-toluenesulfonic acid. Salt, fatty acid salt, acidic amino acid salt, L or DL
-Organic acid salts such as pyrrolidone carboxylates are used. Among these, acidic amino acid salts, hydrochlorides, and L- or DL-pyrrolidone carboxylates are preferred. The amount of the mono-N long chain acyl basic amino acid lower alkyl ester salt is preferably 0.1 to 10% by weight, more preferably 0.2 to 5% by weight, based on the total amount of the hair cosmetic composition. If it is less than 0.1% by weight, the curl holding power and feel of the hair will hardly be improved, and if it exceeds 10% by weight, the finish will become sticky and heavy, and sufficient curl holding power will not be obtained, which is not preferable. In addition to the above-mentioned essential ingredients, the cosmetic of the present invention may contain the following optional ingredients within a range that does not affect the effects of the present invention. That is, optional components include hydrocarbons such as liquid paraffin, vaseline, solid paraffin, squalane and olefin oligomer;
Esters such as isopropyl myristate, isopropyl palmitate, stearyl stearate, octyldodecyl myristate, octyldodecyl oleate, and 2-ethylhexanoic acid triglyceride; polyoxyethylene cetyl ether,
Emulsifiers such as polyoxyethylene stearate and polyoxyethylene sorbitan monolaurate; benzalkonium chloride, cetyltrimethylammonium chloride, cetostearyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, distearyldimethylammonium chloride, etc. Cationic surfactant; N-(2-hydroxyethyl)-N-[bis(2-carboxyethyl)aminoethyl] laurylamide disodium salt, 2
-Amphoteric surfactants such as cocoyl-N-carboxymethyl-N-hydroxyethylimidazolium betaine; anionic surfactants such as higher alcohol sulfates, alcohol ether sulfates, α-olefin sulfonates; lauryl alcohol, cetyl alcohol, stearyl Higher alcohols such as alcohol and behenyl alcohol; Higher fatty acids such as palmitic acid, stearic acid and behenic acid; Humectants such as ethylene glycol, propylene glycol, 1,3-butylene glycol, glycerin and sorbitol; and other solvents,
Small amounts of ingredients such as preservatives and fragrances. The hair cosmetic of the present invention can be used in a variety of applications such as a rinsing type and a non-rinsing type, such as a hair rinse, a hair conditioner, a hair treatment agent, a hair lotion, and a hair spray. can do. Next, examples of the present invention and a comparison column will be shown, and the effects of the present invention will be explained in more detail. Before explaining each example, the test method will be explained. Measurement of Curl Retaining Power 0.15 g of the sample of the present invention was applied to a hair bundle having a length of 20 cm and a weight of 1.5 g. The treated hair was wrapped around a rod and dried with hot air at 50°C for 30 minutes. The curled hair bundle was removed from the rod, placed in an observation box at 30°C and 85% RH, and the state of curl growth was observed. The length of the hair bundle immediately after being placed in the observation box was calculated as 100% curl retention, and the length of the original uncurled hair bundle (20 cm) was calculated as 0% curl retention.
Judgment was made 2 hours after placing the curl in an observation box. Curling retention rate of 50% or more was ◎ 40-50% ○ 30-40% △ 20% or less was ×. Stickiness, Stiffness Apply 0.5g of sample to 10g of hair strands, heat at 25℃, 65℃
The texture after air drying for 24 hours in an atmosphere of % RH was sensory evaluated by 10 panelists. Evaluation was performed on a four-level scale based on the following criteria. Superior to commercial products *1 ◎ Slightly superior to commercial products 〇 Equal to commercial products △ Inferior to commercial products × *1 Composition of commercial products (wt%) Rubiscol VA-37E 1.0 Setanol 1.0 Lanolic acid 0.5 Polyoxyethylene (8 mol) Stearyl ether 1.0 Fragrance 0.3 Ethanol 30.0 Purified water Balance In each example, all blending amounts are shown in weight%. Eleven types of hair cosmetics having the compositions shown in Table 1 were prepared and evaluated for curl retention, hair stickiness, and stiffness.

【table】

[Table] From Table 1, Examples 1 to 6 of this invention are as follows:
It exhibits excellent curl retention ability for hair, and also eliminates the stiffness and stickiness of hair after treatment.
It can be seen that the texture is excellent. On the other hand, comparison row 1 does not contain a hair-fixing polymer and therefore has weak curl holding power, and comparison rows 2 to 5 do not contain a mono-N-long chain acyl basic amino acid lower alkyl ester salt. Therefore, the objective of the present invention, which is to suppress hair stickiness and stiffness, cannot be achieved. Test Example 2 Hair cosmetic compositions having the compositions shown in Table 2 were prepared with varying amounts of mono-N-long chain acyl basic amino acid lower alkyl ester salts as shown in Table 3, and their curl retention was evaluated. The strength, stickiness and stiffness of the hair after treatment were evaluated. The results are shown in the same table.

【table】

[Table] From Table 3, it can be seen that when the amount of mono-N-long chain acyl basic amino acid lower alkyl ester salt is 0.1 to 10% by weight, the curl retention ability is excellent and the hair becomes sticky and stiff after treatment. It turns out that this does not occur. Example 7 A hairspray having the composition shown in Table 4 was prepared and its performance was evaluated.

[Table] This hairspray exhibited excellent curl retention and did not leave the hair sticky or stiff after finishing. Example 8 A hair treatment composition having the composition shown in Table 5 was prepared and its performance was evaluated.

【table】

[Table] The hair treated with this hair treatment composition had an excellent texture without stickiness or stiffness, and had excellent setting properties. Example 9 A sleeping habit correcting agent having the composition shown in Table 6 was prepared and its performance was evaluated.

[Table] This sleeping habit correcting agent had an excellent sleeping habit correcting effect, and after correcting the sleeping habit and setting the hair, the hair was not sticky or stiff and had an excellent texture.

Claims (1)

[Claims] 1. A hair cosmetic composition comprising a water-soluble vinyl or vinylidene polymer and a mono-N long-chain acyl basic amino acid lower alkyl ester salt.