JPS6186933A - Capsule-containing surfactant composition - Google Patents

Abstract

PURPOSE:To attain to enhance discoloration resistance and fading resistance, by constituting the titled composition from one or more of a surfactant and a capsule containing 4-aminobenzoate, a specific ultraviolet absorber, a perfume and a colorant and setting the viscosity thereof to a specific range. CONSTITUTION:A capsule-containing surfactant composition is prepared from at least one surfactant and a capsule containing 4-aminobenzoate, 0.1-1wt% of an ultraviolet absorber selected from benzophenones represented from formula (where R1, R2 and R3 are a hydrogen atom, a hydroxyl group or an 1-12C alkoxyl group and R4 is a hydrogen atom or an 1-12C alkoxyl group) and 4-methoxycinnamate, a perfume and a colorant. It is necessary to set th viscosity of this composition to 1,000cp or less. The perfume is pref. added in an amount of 0.01-3% by wt. of the total amount of the composition and the particle size of the capsule is pref. 0.5-5mm.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to capsule-containing surfactant compositions that have excellent stability against discoloration and fading of the capsules.

[Prior art]

Conventionally, various surfactant compositions comprising a surfactant and a capsule have been known. For example, JP-A-47-39111
According to the publication, capsules containing mineral oil (liquid paraffin, etc.) are dispersed in a highly viscous gel containing a surfactant as a dispersion medium. Further, such capsules can be colored with a coloring material such as red, blue, yellow, etc. or a mixture of these coloring materials to enhance the aesthetic appearance.

However, it has been almost impossible to avoid such colored capsules from discoloring or fading in surfactant solutions. In addition, discoloration and fading of capsule-containing products are extremely unsightly, both in stores and at home, and are unpleasant when used.

〔the purpose〕

The present invention was made under these circumstances, and an object of the present invention is to provide a capsule-containing surfactant composition that has excellent stability against discoloration and fading.

〔composition〕

According to the invention, at least one surfactant and 4-
It consists of a capsule containing 0.01 to 1% by weight of an ultraviolet absorber selected from aminobenzoic acid ester, benzophenones represented by the general formula (1), and 4-methoxycinnamic acid ester, a fragrance, and a coloring agent, and The viscosity of the composition is 1
000 cp or less is provided.

General formula (1) (In the formula, RIJ2 and R3 represent a hydrogen atom, a hydroxyl group, or an alkoxyl group having 1 to 12 carbon atoms, and R4 represents a hydrogen atom or an alkoxyl group having 1 to 12 carbon atoms.) The surfactant used as an essential component includes conventionally known anionic, nonionic, cationic, and amphoteric surfactants, and the type thereof is not particularly limited. Specific examples of such anionic surfactants include, for example, sulfate ester salts of higher alcohols, sulfate ester salts of ethylene oxide adducts of higher alcohols,
α-olefin sulfonate, paraffin sulfonate, N-acylamino acid salt, alkyl phosphate, etc.;
Examples of nonionic surfactants include amine oxides, higher fatty acid jetanolamide, ethylene oxide adducts of alcohols and alkylphenols, and sugar alcohol fatty acid esters; as cationic surfactants, 1
For example, long-chain alkyltrimethylammonium chloride, di-long-chain alkyldimethyldimethylammonium chloride, etc.; examples of amphoteric surfactants include carboxybetaine, sulfobetaine, etc.

The ultraviolet absorber and shite, which are the second essential ingredients of the present invention, are
There are the following.

4-aminobenzoic acid esters, 4-aminobenzoic acid esters such as 4-dimethylaminobenzoic acid ethylhexyl ester, 2,4-dihydroxybenzophenone, 2-
Benzophenones such as hydroxy-4-methoxybenzophenone and 2-hydroxy-4-n-octoxybenzophenone, 2-ethoxyethyl 4-methoxycinnamate,
4-methoxycinnamic acid esters such as 4-methoxycinnamic acid ethylhexyl ester.

The amount of the ultraviolet absorber blended is 0.01 to 1% by weight, preferably 0.03 to 0.5% by weight. If it is less than 0.01% by weight, the effect of preventing shampoo discoloration cannot be obtained;
If it exceeds % by weight, some discoloration will occur and there will be a safety problem for the skin, which is not preferable.

The fragrance, which is the third essential ingredient of the present invention, may be any fragrance used in ordinary cosmetics. Specific examples of fragrances are listed below. Note that these fragrances are generally not used individually, but as a mixed fragrance.

Coumarin, α-hexylcinnamic aldehyde, cobanol, γ-methylionone, velvetone, isoeugenol, eugenol, linalyl acetate, benzyl acetate, ionone, aldehyde C-10, geraniol, citronellol, linalool, C-11 undecylenaldehyde, terpineol, Geranyl acetate, Lilial, dihydromircenol, cyclamen aldehyde, phenylethyl alcohol, aldehyde C-11 undecyl, no(
Tuturi oil, lemon oil, orange oil, jasmine, geranium oil, cedarwood oil, bergamot, ylang-ylang oil, lavandin, vetinove oil.

The blending amount of these fragrances is usually 0.0% based on the total amount of the composition.
0.01 to 3% by weight is preferred, particularly preferably 0.01 to 3% by weight.
It is 1% by weight.

The size of the capsule containing the coloring agent, which is the fourth essential component of the present invention, is not particularly limited, but it is usually preferable that each particle has a diameter of 0.5 to 5 mm, preferably 1 to 4 mm. In addition, this capsule may be easily broken during use, that is, easily destroyed by physical stress during use, or destroyed by dissolution in water during use. The type is not particularly restricted. Such capsules are already known in the past, and conventionally known methods such as US Pat. No. 3,341'466 and US Pat. No. 372
It is produced by a method such as the coacervation method described in No. 61303.

Preferred capsules used in the present invention include those using a coloring agent and a water-soluble polymer as capsule wall materials. The coloring agent may be one used in ordinary cosmetics, and tar-based pigments, titanium-mica-based pearl pigments, and the like are generally used. Specifically, tar-based pigments include the following.

Rhodamine B, Acid Red, Stan■, Ponceau S
X, Brilliant Blue FCF, Alphazurin FG,
First Green FCF, Floretssen, Quinoline Yellow WS, Arzulor Purple.

As the pearl pigment, 2m titanium/mica or one coated with iron oxide, Brichamp blue, chromium oxide, etc. is used.

Examples of water-soluble polymers used in capsules include:
Examples include polysaccharides such as pectin, carrageenan, alginic acid, amylopectin, and guar gum, cellulose derivatives such as methylcellulose, ethylcellulose, 10-xyethylcellulose, hydroxypropylcellulose, and carboxymethylcellulose, as well as polyvinyl alcohol and gelatin. In order to preferably manufacture capsules using such a capsule wall material, in addition to the above-mentioned coacervation method, for example, a double nozzle having concentric pores is used, and a solution containing a core material to be encapsulated or A method of simultaneously extruding the suspension and the capsule wall material from an annular nozzle surrounding its central nozzle can also be employed. When using capsules with such water-soluble polymers as capsule wall materials, in addition to insolubilizing the capsule wall material with a crosslinking agent, it is necessary to prevent its dissolution in the composition. Preventing the dissolution of capsules can be achieved by adjusting the pH of the composition, adding an electrolyte to the composition, or adding a poor solvent for water-soluble polymers such as alcohol, etc. This can be done by decreasing the solubility in solution.

Next, there are various types of core substances to be encapsulated, and various additives are used depending on the use of the composition, but in general, additives that are small and expensive, and physical and chemical additives are used. Additives that are unstable are applied, such as perfumes, silicones, animal and vegetable oils, mineral oils, etc.

Note that as a dispersion medium for dispersing the surfactant, ultraviolet absorber, fragrance, and capsule, an aqueous medium such as water, an aqueous solution, or a mixture of water and an organic solution ff (e.g., ethanol, propylene glycol, etc.) is used. .

The capsule-containing surfactant composition of the present invention has a viscosity such that when the composition is placed in a container, the capsules are easily dispersed uniformly in the contents by shaking the container, that is, 1000 cp or less at 25°C. used.

In addition to the surfactant described above, auxiliary additives commonly used in the past may be added to the surfactant composition of the present invention, and such auxiliary additives may be appropriately selected depending on the use of the composition. Generally, inorganic salts such as mirabilite and common salt, builders, wetting agents, solubilizers, softeners, chelating agents, viscosity modifiers, and the like can be mentioned.

〔effect〕

In the case of capsule-containing surfactant compositions of the present invention.

The colored capsules exhibit excellent stability against discoloration and fading, do not impair the aesthetic appearance of the product, and have significantly increased commercial value.

The capsule-containing surfactant composition of the present invention is used as a hair cosmetic, a fiber treatment agent, and the like.

〔Example〕

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

Examples 1 to 18 Various capsule-containing surfactant compositions shown in Tables 1 to 5 were prepared, and the fading properties of the colorants were tested. The results are shown in Tables 1 to 5.

The outline of the test method used in this example is as follows.

Test Method The prepared cleaning composition was stored under conditions that promote fading by exposing it to sunlight on a rooftop for one month, and its fading properties were determined visually.

Evaluation criteria O: No fading △: Slightly fading ×: Fading The capsules were obtained by a conventional method using gelatin as the wall material, and the inside contained methylphenylsiloxane/liquid paraffin/fragrance = 6/4/1 (weight). A gelatin capsule containing the following ratio was used. In this case, Capsule A uses lppm of the dye Acid Red as a coloring agent on the gelatin membrane.
It was added.

Claims (1)

[Claims] (1) at least one surfactant and 0.01 to 1% by weight of an ultraviolet absorber selected from 4-aminobenzoic acid ester, benzophenones represented by general formula (I), and 4-methoxycinnamic acid ester; , consisting of a capsule containing a fragrance and a coloring agent, and the viscosity of the composition is 1000c.
1. A capsule-containing surfactant composition characterized in that the surfactant composition has a p content of less than or equal to p. General formula (I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (In the formula, R_1, R_2, and R_3 are hydrogen atoms, hydroxyl groups, or alkoxyl groups with 1 to 12 carbon atoms, and R_4 is hydrogen atoms or 1 to 12 carbon atoms. (Represents an alkoxyl group.)