JP2000247836A - Liquid cosmetic for makeup - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid makeup cosmetic composed of a pigment, water and a poly-N-vinylcarboxylic acid amide, usable by filling in a cosmetic- containing applicator, resistant to precipitation and segregation over a long period and forming little spots on the skin. SOLUTION: The objective cosmetic is composed of at least (A) a pigment, (B) water and (C) a poly-N-vinylcarboxylic acid amide. The component A is e.g. Red 202 for an organic pigment and its content in the total ink is preferably 0.3-40 wt.%. The component A may be dispersed with a dispersing agent in the case of forming a cosmetic. The dispersing agent is a surfactant, a resin, etc., and the amount is preferably 0.2-20 pts.wt. based on 10 pts.wt. of the pigment. The component C is e.g. poly-N-vinylformamide and the amount is preferably 0.05-10 wt.%. A water-soluble organic solvent can be used in the cosmetic and the amount of the solvent is preferably 5-40 wt.% based on the total ink.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid cosmetic for make-up, and more particularly to a liquid cosmetic for make-up which can be suitably used by filling it into an applicator having a built-in cosmetic.

[0002]

2. Description of the Related Art Conventionally, cosmetics, especially liquid cosmetics for make-up using a pigment as a colorant, have a problem that when the pigment sediments over time, it accumulates in an application part and clogs the application part, or when a plurality of pigments are used. However, there was a problem that color separation occurred in a coating portion due to a difference in sedimentation speed, and a color of a coating trace was different from an initial color. In order to prevent this, various surfactants, alkali-soluble resins and amphoteric resins have been used as dispersants. In addition, liquid cosmetics having a relatively low viscosity have been used in consideration of the ease of movement of the cosmetics in the applicator since the cosmetics are used by filling the applicator.

[0003]

However, the above dispersant adsorbs on the surface of the pigment and improves affinity with water as a main solvent, thereby preventing sedimentation and color separation over time. The effect of dispersion stabilization was not sufficient, and sedimentation and color separation occurred in the long term. Further, since the viscosity is relatively low, there is a problem that the cosmetic moves and bleeds along the wrinkles of the skin when applied to the skin. In this regard, it is common practice to increase the viscosity of the cosmetic to prevent the movement of the cosmetic on the skin, but in the case of an applicator with a built-in cosmetic, the discharge of the cosmetic is hindered. There was a problem. Here, it is an object of the present invention to provide a makeup cosmetic liquid that hardly causes sedimentation and color separation even after long-term aging and has little bleeding on the skin.

[0004]

That is, the present invention provides a pigment,
The gist of the present invention is a makeup liquid cosmetic comprising at least water and poly-N-vinylcarboxylic acid amide.

Hereinafter, each component of the present invention will be described in detail. Water is used as the main solvent. Pigments can be used without any problem as long as they can be used in cosmetics. To be specific, organic pigments are red 202
No., Red No. 203, Red No. 204, Red No. 205, Red No. 206, Red No. 207, Red No. 208, Red No. 219
No. 220, Red No. 221, Red No. 226, Red No. 228, Red No. 404, Red No. 405, Orange No. 203
No. 204, Orange No. 401, Yellow No. 205, Yellow No. 401, Blue No. 201, Blue No. 204, Blue No. 404 and the like. Among the inorganic pigments, carbon black, mica gold, mica, yellow iron oxide, red Iron oxide, black iron oxide, loess, black titanium oxide, titanium oxide, chromium oxide, chromium hydroxide,
Ultramarine, navy blue, manganese violet, mica titanium, bismuth oxychloride, calamine, aluminum powder and the like. These pigments can be used alone or in combination with other pigments, and the amount of use varies depending on the color tone of the cosmetic, but when the amount is small, the coloration of the applied mark becomes poor, and when the amount is large, the color is insufficiently dispersed and sedimentation over time, Break up, etc.
Since a problem that causes clogging at the pen tip occurs,
It is preferably from 0.3 to 40% by weight based on the total amount of the ink. 0.
If the amount is less than 3% by weight, the coloring is so thin that it cannot be used as a cosmetic. Even if added in an amount exceeding 40% by weight, no improvement in color development is observed and there is no point in adding.

[0006] The above-mentioned pigments which have been dispersed with various dispersants when used as cosmetics can also be used.
Surfactants, resins that can be used for cosmetics as dispersants,
Water-soluble polymers and the like can be used, and alkyl sulfates, polyoxyethylene alkyl ether sulfates, N-acyl amino acids and salts thereof, N-acylmethyl taurine salts, polyoxyethylene alkyl ether acetates, for example, Anionic surfactants such as alkyl sulfocarboxylates, α-olefin sulfonates, alkyl phosphates, polyoxyethylene alkyl ether phosphates, polyoxyethylene alkyl phenol ethers, polyoxyethylene alkyl ethers, sorbitan alkyl esters , Nonionic surfactants such as polyoxyethylene sorbitan alkyl esters, polyoxyethylene fatty acid esters, polyglycerin fatty acid esters, and polyoxyethylene polyoxypropylene alkyl ethers. Styrene-acrylic acid copolymer, styrene-
Maleic acid copolymer, vinylpyrrolidone-vinyl acetate copolymer, vinylpyrrolidone-styrene copolymer, polyacrylic acid, alkali metal salts of resins such as shellac, ammonium salts, amine salts, betaine-type acrylic amphoteric resins And water-soluble polymers such as polyvinylpyrrolidone, pyrivinyl alcohol, xanthan gum and guar gum. . These can be used alone or in combination of two or more. If the amount of the dispersing agent is too small, the desired dispersing effect cannot be obtained, and if it is too large, no further improvement in the dispersing effect can be seen and it is uneconomical. For this reason, the dispersant is preferably used in an amount of 0.2 to 20 parts by weight based on 10 parts by weight of the pigment used.
If it is less than 0.02% by weight, the dispersion effect is small, and
When used in excess of the above, there is almost no improvement in the dispersing effect, and there is no point in adding.

[0007] Poly N-vinyl carboxylic acid amide is used to prevent sedimentation of the pigment, color separation, and bleeding of the applied trace. Poly N-vinyl carboxylic acid amide is a crosslinked type,
Any type of non-crosslinked type can be used, but the type of crosslinked type is more preferable because it has a large effect of preventing sedimentation of the pigment and preventing color separation. An example of poly N-vinyl carboxylic acid amide is poly N
-Vinylformamide, polyN-methyl-N-vinylformamide, polyN-vinylacetamide, polyN-methyl-N-vinylacetamide and the like. When a crosslinked type is used, N, N'-1,4 is used as a crosslinking agent.
-Butylenebis (N-vinylacetamide), N, N '
-1,6-hexylenebis (N-vinylacetamide), N, N'-1,10-decylenebis (N-vinylacetamide), N, N'-3-oxa-1,5-pentylenebis (N-vinylacetamide) , N, N'-
3,6-dioxa-1,8-octylenebis (N-vinylacetamide), N, N'-xylenebis (N-vinylacetamide), N, N'-diacetyl-N, N'-
Examples include compounds having two or more unsaturated groups in one molecule such as divinyl 1,4-bisaminomethylcyclohexane and the like, but are not limited thereto. Although the amount of the poly (N-vinylcarboxylic acid amide) varies depending on the use of the cosmetic, it is generally preferably 0.05 to 10% by weight. If it is less than 0.05% by weight, the effect of preventing sedimentation of the pigment, color separation, and bleeding of the applied mark is small, and if it exceeds 10% by weight, the fluidity of the cosmetic is lost, and even if the cosmetic is filled into the applicator, the cosmetic is not used. Discharge does not occur.

[0008] In addition to the above components, various water-soluble organic solvents can be used in the present invention. The water-soluble organic solvent has various qualities as a cosmetic, for example, to delay the drying and unusability when the coated part is left exposed to the air, or to prevent the cosmetic from freezing at low temperatures. In order to prevent this, it is used for the purpose of dissolving aid of various cosmetic ingredients. Specifically, alcohols such as ethanol, 1-propanol, 2-propanol, butyl alcohol and benzyl alcohol, ethylene glycol,
1,2-propanediol, 1,3-butanediol,
Hexylene glycol, 2-ethyl 1,3-hexane glycol, glycerin, triethylene glycol, dipropylene glycol, diglycerin, polyethylene glycol, glycol such as polypropylene glycol, ethylene glycol ethyl ether, ethylene glycol methyl ether, ethylene glycol butyl ether,
Ethers such as diethylene glycol ethyl ether, N
-Methyl-2-pyrrolidone, 2-phenoxyethanol and the like can be used. These can be used alone or in combination of two or more. Further, the use amount thereof is preferably 5 to 40% by weight based on the total amount of the ink. If the content is less than 5% by weight, the composition is insoluble due to insufficient dissolution or dispersion of each composition in the ink.
Aggregates may be generated. Even if added in an amount exceeding 40% by weight, the effect is not improved, and the meaning of the addition cannot be found.

Further, for the purpose of adjusting the viscosity of the ink composition, polyvinyl methyl ether, polyethylene oxide, carboxyvinyl polymer and / or salts thereof, natural gum arabic, tragacanth gum, locust bean gum, alginic acid, carrageenan, gelatin, casein,
Examples include dextran, semi-synthetic methylcellulose, ethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, sodium starch glycolate, sodium alginate, propylene glycol alginate, and derivatives of the above.

Further, in order to suppress the outflow inhibition of the ink in the ink passage of the writing instrument due to the generation of mold, preservatives such as sodium dehydroacetate, sorbic acid, potassium sorbate, benzoic acid, sodium benzoate, paraoxybenzoate and the like are used. An appropriate amount of a fungicide can be added.

In order to adjust the pH of the ink, various alkalizing agents such as sodium hydroxide, potassium hydroxide, sodium carbonate, sodium hydrogencarbonate, ammonia, organic amine, alkanolamine, hydroxyalkylaminoethanol, etc. Additives such as fragrances and defoamers can be used as needed.

[0012] The cosmetic of the present invention is mainly intended to be used by filling it into a cosmetic-containing type applicator, but considering the discharge of the cosmetic from the applicator, the viscosity of the cosmetic is determined by the viscosity of the applicator. Although it depends on the mechanism, a range of 1 to 5000 cp is desirable.

In producing the cosmetic of the present invention, various conventionally known methods can be employed. For example, when a non-dispersed pigment is used, the pigment can be obtained by dispersing the pigment with a dispersing machine such as a ball mill, a sand grinder, a roll mill or the like, and then mixing it with other components. When a pigment already dispersed is used, it can be easily obtained by mixing it with other components. At this time, the dispersed pigment may be used again by using the disperser.

[0014]

When the poly (N-vinylcarboxylic acid amide) is used in the present invention, the sedimentation of the pigment is suppressed even after a long period of time,
Assuming that color separation is also prevented, poly N-
The nitrogen atom part of the amide bond part of vinylcarboxylic acid amide shows cationicity, where the anionic pigment is electrostatically adsorbed and the pigment is present in the cosmetic as if it were wrapped in the molecular chain It is presumed that it will be. It is presumed that the pigment and the poly (N-vinyl carboxylic acid amide) behave like one lump, thereby preventing both sedimentation and color separation. Furthermore, poly N
-Vinyl carboxylic acid amide has the same acid amide bond as the peptide bond in the protein structure of the skin, so it has high affinity with the skin, and when applied, poly N-vinyl carboxylic acid amide is in the molecular chain. It is presumed that bleeding can be suppressed because the cosmetics are firmly fixed to the skin while the pigment is wrapped therein and the movement of the cosmetic after application is suppressed.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments. The viscosity of each ink in Examples and Comparative Examples was 50 cps.
Less than 50 cps to 600 cp measured with a standard cone rotor at 10 rpm, ELD viscometer manufactured by Tokimec Co., Ltd.
The value of less than s is measured with an ELD viscometer standard controller 1 rpm from Tokimec Co., Ltd.
The value of less than cps was measured with an ELD type viscometer ST rotor 10 rpm manufactured by Tokimec Co., Ltd. The temperature at the time of measurement is 25 ° C
Met. In each of the examples, “parts” means “parts by weight”.

Example 1 Carbon black no. 4 (carbon black, manufactured by Daito Kasei Kogyo Co., Ltd.) 7.0 parts Propylene glycol 15.0 parts Nikkor PBC-34 0.8 parts Plating N (Methyl paraoxybenzoate, manufactured by Ueno Pharmaceutical Co., Ltd.) 0.3 parts Rheoic GX-205 (cross-linked poly N-vinylacetamide, manufactured by Nippon Pure Chemical Co., Ltd.) 0.5 part Purified water 59.2 parts Carbon black No. 4 and the total amount of NIKKOR PBC-34 and 18 parts of purified water were mixed and stirred, and then passed through a three-roll mill five times to obtain a black paste. This paste was mixed with the remaining components, stirred, and added to a solution in which the components were uniformly dissolved, followed by stirring for 2 hours to obtain a black liquid cosmetic having a viscosity of 220 cp.

Example 2 Konjo (Navy Blue, manufactured by Daito Kasei Kogyo Co., Ltd.) 12.0 parts Glycerin 10.0 parts Yuka Former AM75-205 (betaine-type acrylic acid-based amphoteric resin, manufactured by Mitsubishi Chemical Corporation) 0 parts Plating M 0.4 parts Rheogic GX-205 1.2 parts Purified water 59.2 parts Of the above components, Conju and Yuka Former AM75
After mixing and stirring the total amount of -205 and 24 parts of purified water, the mixture was passed through a three-roll mill five times to obtain a blue paste. This paste was mixed with the remaining components, stirred and added to a solution in which the components were uniformly dissolved, and stirred for 2 hours to obtain a blue liquid cosmetic having a viscosity of 1340 cp.

Example 3 Herringdon Pink CN (Red No. 226, manufactured by Daito Kasei Kogyo Co., Ltd.) 2.0 parts Carbon black No. 4 5.0 parts Propylene glycol 15.0 parts Joncryl J-61 (ammonium salt of styrene-acrylic acid copolymer, manufactured by Johnson Polymer Co., Ltd.) 0.8 parts Plating ratio M 0.4 parts GE-191 ( N-vinylacetamide homopolymer (manufactured by Showa Denko KK) 0.3 parts Purified water 59.2 parts Of the above components, Herringdon Pink CN, Carbon Black No. 4 and the total amount of John Krill J61 and purified water 13
After mixing and stirring, the mixture was passed through a Dyno mill (Shinmaru Enterprises Co., Ltd. medium dispersing machine) five times to obtain a brown dispersion. This dispersion was mixed with the remaining components, stirred, and added to a homogeneously dissolved liquid, and the mixture was stirred for 2 hours.
p brown liquid cosmetic was obtained.

Comparative Example 1 A black liquid cosmetic having a viscosity of 4 cp was obtained in the same manner as in Example 1 except that water was added instead of Rheological GX205.

Comparative Example 2 A blue liquid cosmetic having a viscosity of 1290 cp was obtained in the same manner as in Example 2 except that Neovisco CST (Cationized Gum Gum, manufactured by Sanseki Co., Ltd.) was added instead of Rheological GX205.

Comparative Example 3 The same procedure was performed as in Example 3, except that 1.0% of HPC-H (hydroxypropylcellulose, manufactured by Nippon Soda Co., Ltd.) was added instead of GE191, and the amount of water was reduced. A brown liquid cosmetic having a viscosity of 130 cp was obtained.

[0022]

The inks of the examples and comparative examples obtained as described above were filled into a 10 ml test tube by 7 ml to prepare a test sample.

[0023]

[Table 1]

Pigment sedimentation test: When the ink put in a test tube was aged at room temperature, the time until sediment was generated was confirmed. Color separation test: The time required for the color of the ink in the upper layer to significantly change when the ink placed in the test tube was aged at room temperature was confirmed. Bleeding test: The cosmetics of Examples 1 to 3 and Comparative Examples 1 to 3 were applied to the back of a hand by penetrating into the tip of a pen brush (Pentel Co., Ltd.). It was measured.

As described in detail above, the liquid cosmetics according to the present invention are excellent in that the pigment hardly sediments even with the lapse of time, and that the color is not easily separated by aging even when a plurality of pigments are used.

Claims (1)

[Claims] 1. A make-up liquid cosmetic comprising at least a pigment, water and polyN-vinylcarboxylic acid amide.