JPH11130653A - Emulsion type cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stable jelly or creamy emulsion type cosmetic having excellent feeling in application such as spreadability, compatibility, etc., to a coated face, and improved affinity for skin and hair, and continuing a moist feeling for a long time. SOLUTION: This emulsion type cosmetic comprises (A) a cross-linking type acrylic acid copolymer, (B) an oil component, (C) an alkali agent and (D) an organic acid and/or an inorganic acid metal salt. The component A is preferably a carboxyvinyl polymer. Natural oils and fats, solid oils and fats, waxes, etc., may be cited as the component B. 2-Amino-2-methyl-1-propanol is preferably used as the component C and sodium lactate as the component D.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a stable gel-like or cream-type emulsified cosmetic which has a good feeling of application such as spreading on a coating surface and adaptability, has a good affinity for skin and hair and has a long lasting moist feeling. It is.

[0002]

2. Description of the Related Art It has been known to use a crosslinked acrylic acid copolymer in order to obtain a stable emulsion.

[0003]

However, when the emulsion using the crosslinked acrylic acid copolymer is applied to the skin or hair, it has a strong "watery" feeling, so that it is too refreshing and greasy. Since the amount was too small, the usability such as elongation and conformity was poor, and the moist feeling was hard to last for a long time.

A method using an alkyl-modified carboxyvinyl polymer as an emulsification method in which the amount of a surfactant used is reduced or no surfactant is used is disclosed in JP-A-8-1268.
No. 31, etc. Further, Japanese Patent Application Laid-Open No. Hei 8-217624 discloses a method for improving the usability such as elongation and adaptation by adding saccharides and the like.

[0005] However, none of them has been able to improve the "wateriness" which is a unique application feeling of the emulsion of the crosslinked acrylic acid copolymer or the durability of the moist feeling.

[0006]

The present inventors have conducted intensive studies to solve the above problems, and have found that (A) a crosslinked acrylic acid copolymer, (B) an oil component, and (C) an alkali agent. And (D) by blending a metal salt of an organic acid and / or an inorganic acid, it is possible to obtain a stable emulsified cosmetic that has a good feeling of application, a good affinity for skin and hair, and a long lasting moist feeling. They have found that they can do this and have completed the present invention.

The crosslinked acrylic acid copolymer used in the present invention includes, for example, Carbopol 940, 941, 98
0, 981, 934, 2984, 5984 (BFGoo
carboxyvinyl polymer (cross-linked polyacrylic acid) and Carbopol 1 which include trade names such as Drich Corporation and Hibiswako 104 and 105 (Wako Pure Chemical Industries, Ltd.).
382, ETD-2020, PEMULENTR-1,
It is an alkyl-modified carboxyvinyl polymer (alkyl methacrylate acrylate copolymer) such as TR-2 (manufactured by BF Goodrich), and among them, the use of a carboxyvinyl polymer is preferred because the effect of the product of the present invention is high and preferred. .

The amount of the crosslinked acrylic acid copolymer to be incorporated in the composition of the present invention is not particularly limited, and varies depending on the viscosity required for the composition. Used in the range of ５5% by weight.

If the amount is less than 0.05% by weight, a good emulsified state cannot be obtained, and if the amount is more than 5% by weight, no improvement effect can be obtained and also disadvantages in cost increase.

As the (B) oil used in the product of the present invention, various raw materials usually used for cosmetics can be used.

Examples include liquid natural fats and oils, solid fats and oils, waxes, ester oils, hydrocarbons, sterols, silicone oils, higher alcohols, fatty acids and the like.

Liquid natural fats and oils include linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil,
Olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, ginger oil, cinnamon oil, jojoba oil, grape oil, sunflower oil, almond oil, rapeseed oil, sesame oil,
Wheat germ oil, rice germ oil, rice bran oil, cottonseed oil, soybean oil, peanut oil, teaseed oil, evening primrose oil, egg yolk oil and the like.

Solid fats and oils include skipjack tallow, coconut oil, palm oil, palm kernel oil, tallow, hardened milk fat, horse fat, hardened oil,
Hardened castor oil, mokurou, shea butter and the like.

The waxes include beeswax, ganderilla wax, cotton wax, carnauba wax, bayberry wax, Ibota wax, whale wax, montan wax, nuka wax, lanolin,
There are reduced lanolin, hard lanolin, kapok wax, sugar cane wax, jojoba wax, shellac wax and the like.

Examples of ester oils include octanoic esters such as cetyl octanoate, lauric esters such as hexyl laurate, myristic esters such as isopropyl myristate, octyldodecyl myristate, palmitic esters such as octyl palmitate, and stearic acid. Stearic acid esters such as isocetyl acid, isostearic acid esters such as isopropyl isostearate, isopalmitic acid esters such as octyl isopalmitate,
Oleic acid esters such as isodecyl oleate, adipic acid diesters such as diisopropyl adipate, sebacic acid diesters such as diethyl sebacate, diisostearyl malate, glyceryl trioctanoate, triglycerides such as glycerin triisostearate, and trimethylol triisostearate There are trimethylolpropane fatty acid esters such as propane and pentaerythritol fatty acid esters such as pentaerythritol tetraoctanoate.

Examples of the hydrocarbon include liquid paraffin, ozokerite, squalane, squalene, pristane, paraffin, isoparaffin, ceresin, vaseline, and microcrystalline wax.

Sterols include cholesterol, tosterol, phytosterol, lanosterol and the like.

Examples of the silicone oil include hexamethyldisiloxane, octamethyltrisiloxane, methylpolysiloxane, hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, methylpolycyclosiloxane, amino-modified silicone, methylphenyl Examples include polysiloxane.

Examples of the higher alcohol include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, behenyl alcohol, isostearyl alcohol,
Oleyl alcohol, 2-hexyldecanol and 2-
Octyldodecanol and the like.

Examples of the fatty acid include lauric acid, myristic acid, stearic acid, oleic acid, behenic acid, hydroxystearic acid and the like.

The content of these oil components is 0.1 to
It is preferably 30% by weight, more preferably 0.5 to 20% by weight. If the content is less than 0.1% by weight, the effect is not exhibited, and if the content exceeds 30% by weight, the effect cannot be further improved. In particular, when two or more oils selected from the group consisting of oils (triglycerides, esters, etc.) which are liquid at normal temperature (25 ° C.) and solids or pastes at room temperature (higher alcohols, waxes, etc.) are used in combination, The effect is remarkably enhanced, which is preferable.

The alkaline agent (C) used in the present invention includes 2-amino-2-methyl-1-propanol,
-Amino-2-methyl-1,3-propanediol, potassium hydroxide, sodium hydroxide, triethanolamine, sodium carbonate and the like, and one kind or a combination of two or more kinds is used. The compounding amount is sufficient to neutralize the crosslinked acrylic acid copolymer to be used, and the compound of the present invention is compounded so as to be adjusted to pH 5 to 8.

The metal salt of (D) an organic acid and / or an inorganic acid used in the present invention may be a widely used organic acid and / or inorganic acid.
Or a metal salt of an inorganic acid, such as lactic acid, tartaric acid, citric acid, malic acid, glutamic acid and pyrrolidone carboxylic acid, and the like, and metal salts such as sodium, potassium, calcium, and magnesium. Acids, malic acid, glutamic acid and the sodium salt of pyrrolidonecarboxylic acid are preferred.

The compounding amount in the cosmetic is 0.05 to 5% by weight,
Preferably, it is 0.1 to 2% by weight, and the mixing ratio with the alkali agent as the component (C) is (C) / (D) = 0.3 to 3.0.
When it is 0, the effect of the present invention can be sufficiently exhibited,
Particularly preferred.

When a nonionic activator is added as another component, the emulsion stability is improved. The type of the activator is not particularly limited, but a liquid activator at room temperature is preferred because of easy handling. Examples of nonionic surfactants that are liquid at ordinary temperature include polyoxyethylene (hereinafter abbreviated as POE) hydrogenated castor oil having an added mole number of oxyethylene of 40 or less, and POE octyl having an added mole number of oxyethylene of 15 or less. Phenyl ether, POE nonyl phenyl ether, POE stearylamine and POE oleylamine, POE oleyl ether and POE lauryl ether having an addition mole number of oxyethylene of 9 or less, POE sorbitan fatty acid ester having an addition mole number of oxyethylene of 20 or less, and the like. No.

Further, a polymer compound may be blended for the purpose of improving the viscosity and giving the setting property. As the high molecular compound, plant-based polymers such as gum arabic, tragacanth, galactan, guar gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), starch (rice, corn, potato, wheat),
Microbial polymers such as dextran and pullulan; animal polymers such as collagen, casein, albumin and gelatin; starch polymers such as carboxymethyl starch and methylhydroxypropyl starch; methylcellulose, nitrocellulose, ethylcellulose and methylhydroxypropylcellulose , Hydroxyethylcellulose, cellulose sodium sulfate, hydroxypropylcellulose, carboxymethylcellulose sodium, crystalline cellulose, cellulosic polymers such as cellulose powder,
Alginic acid polymers such as sodium alginate and propylene glycol alginate, polyoxyethylene polymers, polyoxyethylene polyoxypropylene copolymer polymers, polyethyleneimine, cationic polymers, bentonite, aluminum magnesium silicate, laponite, hectorite , An inorganic water-soluble polymer such as silicic anhydride, a polyvinylpyrrolidone, a polyvinylpyrrolidone-based polymer compound such as a vinylpyrrolidone / vinyl acetate copolymer, N-methacryloylethyl N, N-dimethylammonium.α-N-methylcarboxy Betaine /
Examples include amphoteric acrylic polymer compounds such as an alkyl methacrylate copolymer.

The following components can be added to the cosmetic of the present invention, if necessary, as long as the effects of the present invention are not impaired.

Antioxidants such as ascorbic acid, α-tocopherol, dibutylhydroxytoluene and butylhydroxyanisole, benzoic acid, salicylic acid,
Sorbic acid, paraoxybenzoate, parachloromethcresol, hexachlorophen, benzalkonium chloride, chlorhexidine, trichlorocarbanilide,
Bactericides such as photosensitizers and phenoxyethanol; benzoic acid-based ultraviolet absorbers such as para-aminobenzoic acid; salicylic acid-based ultraviolet absorbers such as octyl salicylate, phenyl salicylate and homomethyl salicylate; isopropyl paramethoxycinnamate; octyl paramethoxycinnamate Cinnamic acid-based ultraviolet absorbers such as 2-ethylhexyl paramethoxycinnamate and glyceryl mono-2-ethylhexanoate diparamethoxycinnamate, 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5
And benzophenone-based ultraviolet absorbers such as -sulfonic acid and sodium 2-hydroxy-4-methoxybenzophenone-5-sulfonate, and other perfumes, plant extracts, proteins, and protein derivatives.

The cosmetics of the present invention can be used for any purpose, such as emulsions, creams, facial cosmetics, body cosmetics, aromatic cosmetics, and hair cosmetics such as hair conditioning agents and hair styling agents. it can.

[0030]

The present invention will now be described with reference to Examples and Comparative Examples of the hair cream of the present invention. However, the present invention is not limited to the following Examples.

[0031]

【Example】

Examples 1 to 3 After the components (B) were heated and dissolved at 80 ° C., the components (A), purified water and component (C) were added to emulsify Examples 1 to 3 shown in Table 1 and finally emulsified. (D) was added and cooled to adjust.

[0032]

[Table 1]

Comparative Examples 1-2 shown in Table 2 were replaced with Examples 1-3
Adjusted in the same manner as in. Further, Comparative Examples 3 and 4 were prepared by dissolving the component (B) at 80 ° C. under heating, adding xanthan gum or hydroxyethylcellulose and purified water, emulsifying the mixture, and then cooling.

[0034]

[Table 2]

With respect to Examples 1 to 3 and Comparative Examples 1 to 4, the storage stability at 50 ° C. for one month and the feeling of application when used by 20 specialized panels were evaluated. The evaluation criteria were set as follows. -Storage stability at 50 ° C for 1 month ：: Oil components are not separated and there is almost no decrease in viscosity. ：: The oil component is not separated, but the viscosity is reduced. Δ: Separation of oil component was slightly observed. ×: Separation of oil components is observed. -Feeling at the time of use ◎: Moist and rich. ：: A little loose. Δ: Sticky. ×: Watery. Table 3 shows the results.

[0036]

[Table 3]

[0037]

EFFECT OF THE INVENTION According to the present invention, a stable gel-like or cream-type emulsified cosmetic which has a good application feeling such as spreading to the application surface and adaptability, has a good affinity for skin and hair, and lasts a long time. Can be provided.

Claims (1)

[Claims] 1. A crosslinked acrylic acid copolymer (A), (B)
A cosmetic containing an oil, (C) an alkali agent, and (D) a metal salt of an organic acid and / or an inorganic acid.