JPH0436227A - Hair cosmetic - Google Patents

Abstract

PURPOSE:To provide the title cosmetic highly safe to the skin, having excellent hair trimming ability, capable of forming a transparent, highly rinsable resin film and of giving polish to the hair, formulated with a hair-setting resin and pyroglutamic ester-based nonionic surfactant. CONSTITUTION:The objective cosmetic can be obtained by incorporation of (A) 1-5wt.%, on a solid basis, of at least one kind of hair-setting resin selected from amphoteric resins, anionic resins, cationic resins, nonionic resins, etc., (B) 0.03-0.50wt.% of a nonionic surfactant (e.g. polyoxyethylene glyceryl pyroglutamic-isostearic diester), and approximately (C) such ingredients as plasticizer, antioxidant, ultraviolet light absorber and/or perfume, followed by preparation through a conventional method, thus obtaining the objective cosmetic. The present cosmetic can be prepared in the form of hair mist, hair spray etc.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention provides hair cosmetics, particularly those that are highly safe for the skin, have excellent hair styling ability, and form a transparent resin film that is easy to wash off. This invention relates to a hair cosmetic that gives excellent shine to hair.

[Conventional techniques and issues] Conventionally, hair mist that fixes hair and adjusts hair style;
BACKGROUND ART Hair (hair styling) cosmetics such as hair sprays contain various surfactants mainly to solubilize fragrances and oils. However, such surfactants impair the transparency of the film of the hair fixing resin blended to impart hair styling ability, and reduce the shine of the hair. Furthermore, cationic and nonionic surfactants that are blended into conventional hair cosmetics are not sufficiently safe for the skin.

From this point of view, the present inventors have investigated incorporating into hair cosmetics an amino acid-based active agent that is highly safe and blends well with the hair. As a result, by selecting a pyroglutamic acid ester nonionic surfactant among amino acid surfactants as a surfactant to be combined with the hair fixing resin, we have achieved safety for the skin as well as good transparency and washability. The present inventors have discovered that a resin coating can be obtained that provides excellent hair luster, and has completed the present invention.

BACKGROUND ART It has been known that glutamate ester-based surfactants are incorporated into some hair cosmetics, such as rinses and Nyanbu, as surfactants that are mild to the skin and hair.

However, no hair styling cosmetics have been studied in combination with hair fixing resins that form a film on the hair surface.

[Means for Solving the Problems] The present invention provides a hair cosmetic containing a hair fixing resin and a pyroglutamic acid ester nonionic surfactant.

Examples of the hair fixing resin to be incorporated into the hair cosmetic of the present invention include amphoteric resins, anionic resins, cationic resins, and nonionic resins.

Examples of amphoteric resins include monochloroacetic acid ampholyte of dialkylaminoethyl methacrylate polymer (Yukaformer AM75, Mitsubishi Yuka type), octylacrylamide/butylaminomethyl methacrylate/acrylic acid/acrylic acid ester polymer (8MPtlOMER, manufactured by NSC)
Examples include.

Examples of anion resins include acrylic ester/methacrylic ester copolymer (manufactured by Plus Size Goo Kagaku),
Vinyl acetate/crotonic acid copolymer (Resin 2B-131
0, manufactured by NSC), vinyl acetate/crotonic acid/vinyl neodecanate copolymer (Resin 28-2930. manufactured by NSC), and methyl vinyl ether maleic acid half ester copolymer (Gantretz ES, manufactured by GAF).

As a cationic resin, dimethyldiallylammonium chloride polymer (manufactured by Merguat Calgon)
, hydroxyethylcellulose/dimethyldiallylammonium chloride copolymer (Celcoat).

(manufactured by NSC), vinylpyrrolidone quaternized dialkylaminoalkyl (meth)acrylate polymer (Gaffcoat, G
(manufactured by AP).

As a nonionic resin, polyvinylpyrrolidone (P■P,
manufactured by GAF), vinylpyrrolidone/vinyl acetate copolymer (
Rubiscoll VA, BASFtJ). Among these, anionic resins are particularly preferred from the viewpoint of hair setting power.

It is preferable that IN or 2M or more of these hair fixing resins be blended in the cosmetic composition in an amount of 1 to 5 weight percent as a solid content.

If the blending amount of the hair fixing resin is less than 1% by weight, sufficient setting power will not be obtained as a hair fixing cosmetic. In addition, if the blending amount exceeds 5% by weight, the spray mechanism may become clogged, resulting in liquid dripping, or the mist properties of the setting agent may deteriorate, making it impossible to spray the hair uniformly, reducing the commercial value of the hair fixing cosmetic. or decrease significantly.

In addition, when using an anionic resin, some or all of the anionic functional groups are replaced with 2-amino 2-methyl-1-
It is best to neutralize with a neutralizing agent such as propatool or triethanolamine.

Next, the pyroglutamic acid ester nonionic surfactants to be incorporated into the cosmetics of the present invention include esters of polyoxyalkylene polyhydric alcohol and pyroglutamic acid,
Examples include diesters of polyoquine alkylene polyhydric alcohols, pyroglutamic acid, and fatty acids. Examples of polyhydric alcohols include glycerin, castor oil, hydrogenated castor oil, propylene glycol, ethylene glycol, noglycerin, etc., and examples of fatty acids include isostearic acid, myristic acid, lauric acid, and oleic acid. Among these pyroglutamine-based esters, CFI-OCOC,
7FI3. (OCR, CH,). 0COC,,H3゜[
In the formula, R+))4c is 20-70. ] and the following formula [■]:

C) l, -C) I.

(2) C1-(OCH, CH,)cOCOC,, Has [where λ+b+c is 20-30. POE represented by
Added glyceryl pyroglutamic acid isostearic acid diester (Pyrothyl GP ■1 manufactured by Nippon Emulsion) is particularly preferred.

These pyroglutamic acid esters are II or 2
It is preferable to incorporate 0.03 to 0.50% by weight of these seeds into the hair cosmetic. If the amount of pyroglutamic acid ester is less than 0.03% by weight, the solubilizing power of the fragrance will decrease,
It is more likely to cause sagging at low temperatures. Also, the blending amount is 0.50
If the amount exceeds % by weight, the resin film becomes plasticized and becomes sticky.

The hair cosmetic of the present invention can be prepared into various hair cosmetics in the form of hair mist, hair spray, etc. by known methods. The hair cosmetic of the present invention may further contain plasticizers, antioxidants, preservatives, ultraviolet absorbers, plant extracts, fragrances, etc., as necessary, within a range that does not impair its performance. Examples of plasticizers include alcohols such as propylene glycol, polypropylene glycol, and glycerin, esters such as isopropyl myristate, hexyl laurate, and octyldodecyl myristate, and silicone derivatives such as dimethylpolysiloxane and methylphenylpolysiloxane. .

Solvents such as ethanol, water, ethanol/water mixtures, isopropyl alcohol, etc. are used to dissolve these components.

[Example code] Next, the present invention will be explained in more detail with reference to Examples.

In Examples and Comparative Examples, all amounts are expressed in weight %.

Example 1 (hair mist) Ingredients Amount Cocaformer 5M75R205S 13.00 (3
0% ethanol solution) Pyrotyl CPI-400,10 Polyethylene glycol 0. lO fragrance
0.10 ethanol
86.70 A hair mist having the above composition was prepared according to a conventional method.

Example 2 Ingredients Blend amount Earthplay Plus Size L-53PB 800 (50
% ethanol solution) Pyrothyl GPI-25005 Polyethylene glycol OIO Propylene glycol 002 Fragrance
010 ethanol
41.73 Liquefied petroleum gas 50
A hair spray was prepared by blending the above ingredients and filling a pressure container according to a conventional method.

Examples 3 to 7 and Comparative Examples 1 to 8 Hair sprays were prepared by a known method using the compositions shown in Table 1 below, and the following items were evaluated. That is, cosmetics containing different types and amounts of amino acid surfactants were prepared, and the transparency, stickiness, wash-off, and low-temperature stability of the films were evaluated using the following methods.

(Transparency of film) The contents were sprayed onto a glass plate, and the film was observed until it dried.

Judgment Criteria: O Transparent △ Cloudy during drying × Cloudy throughout observation (cloudy) After spraying the contents onto a glass plate and drying for 10 minutes, an expert panelist evaluated with their fingers.

Judgment criteria ○ Not sticky Slightly sticky
Water of mC was poured on the film and the degree of removal of the film was observed.

Judgment criteria: ○ Transparently dissolved △ Dissolved while swelling × Not dissolved (low-temperature stability) Judgment was made visually after the contents were left in a constant temperature room at -5° C. for 24 hours.

Judgment Criteria 20 Transparent × Precipitation (comprehensive evaluation) O: If all 4 items are ○ To: If even one item is △ ×: If there is an X in even one item These results are also shown in Table 1.

As is clear from Table 1, when 0.03 to 0.05% by weight of pyroglutamic acid ester is blended with a hair fixing resin, a hair cosmetic that is stable, has excellent film transparency, and is easy to wash off can be obtained.

[Effects of the Invention] The hair cosmetic of the present invention has good hair styling ability, forms a coating with excellent transparency and washes off easily, and gives shine to the hair. It also has high safety to the skin.

Claims (4)

[Claims] (1) A hair cosmetic containing a hair fixing resin and a pyroglutamic acid ester nonionic surfactant. (2) The hair cosmetic according to claim 1, wherein the hair fixing resin is an anionic resin. (3) The hair cosmetic according to claim 2, wherein the anionic resin is a methyl vinyl ether/maleic acid half ester copolymer. (4) The hair cosmetic according to claim 1, 2 or 3, wherein the nonionic surfactant is polyoxyethylene glyceryl pyroglutamic acid isostearic acid diester.