JP2014101344A - Cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aqueous or oil-in-water type cosmetic which contains metal oxide powder and has high stability and use feeling.SOLUTION: An aqueous or oil-in-water type cosmetic contains: metal oxide powder, preferably one or two or more kinds of metal oxide fine particles having an average particle diameter of 5 to 500 nm which is selected from the group consisting of titanium oxide, zinc oxide, iron oxide and cerium oxide and is subjected to hydrophilic surface treatment; and sodium acrylate grafted starch having good compatibility therewith. Thereby, the cosmetic has a smooth and refreshed feeling, and excellent temporal stability. Further, a cosmetic having various states such as a powdery mousse state and a smooth gel state by using sodium acrylate grafted starch having grades different in an average particle diameter.

Description

  The present invention relates to an aqueous or oil-in-water cosmetic containing a metal oxide powder and a sodium acrylate grafted starch, and more specifically, has no stickiness, has a smooth and refreshing feeling, and is excellent in stability over time. Water-based or oil-in-water cosmetics.

  Conventionally, aqueous or oil-in-water cosmetics have a fresh and refreshing feeling because the continuous phase is composed of aqueous components, and are used for gels, emulsions, creams, foundations, sunscreen cosmetics, etc. Has been. In these water-based or oil-in-water cosmetics, a carboxyvinyl polymer is often used as a thickener. Carboxyvinyl polymer provides high thickening stability at low concentrations, reproducibility not available with natural polymers, good temperature stability, good bacterial resistance, It is widely used in cosmetics because it can be used in the pH and viscosity ranges and has a good feeling when applied to the skin. In addition, in order to impart coloring and UV protection functions to cosmetics, metal oxide powders such as titanium oxide, zinc oxide, iron oxide and cerium oxide, particularly fine metal oxide powders are blended.

  However, when metal oxide powder is blended with cosmetics using carboxyvinyl polymer, the pigment is agglomerated / precipitated over time or extremely thickened or thinned, resulting in poor storage stability. Had the disadvantages. Therefore, a combination of fine pigment particles having a hydrophobic surface treatment and a carboxylic acid polymer thickener (Patent Document 1), or a combination of a silica treatment and a metal oxide hydrophobized on the outside thereof (Patent Document 2). ) And other polymer thickeners have also been studied (Patent Documents 3 and 4). However, the development of water-based or oil-in-water cosmetics with good storage stability and high usability has been further desired.

JP H8-505624 A JP 2009-161496 A JP 2010-215602 A JP 2012-140334 A

  An object of the present invention is to provide an aqueous or oil-in-water cosmetic containing a metal oxide powder and having high stability and high usability.

  Therefore, as a result of intensive studies, the present inventor has a sodium acrylate graft starch that has good compatibility with metal oxide powder and can adjust a stable gel. It has been found that it is possible to obtain an aqueous or oil-in-water cosmetic having excellent stability over time, and the present invention has been completed.

  That is, the present invention has an average particle size of one or more selected from the group consisting of metal oxide powders, more preferably titanium oxide, zinc oxide, iron oxide, and cerium oxide subjected to hydrophilic surface treatment. More specifically, it is non-sticky, smooth and refreshing to use for water-based or oil-in-water cosmetics containing 5 to 500 nm fine particle metal oxide powder and sodium acrylate graft starch having good compatibility with them. The present invention relates to a water-based or oil-in-water cosmetic having excellent temporal stability.

  As described above, Na-acrylate starch has good compatibility with metal oxide powder, so it is non-sticky, has a smooth and refreshing feeling of use, and is a water-based or oil-in-water cosmetic that has excellent stability over time. Obviously, you can get a fee. In addition, by using grades having different average particle diameters of Na-grafted starch acrylate, cosmetics in various states from powdery mousse to smooth gel can be prepared.

Hereinafter, the present invention will be described in detail.
The acrylic acid Na graft starch used in the cosmetics of the present invention is a water-soluble polymer gelling agent, and MAKIMOUSSE7, MAKIMOUSSE12, MAKIMOUSSE25 [manufactured by Daito Kasei Kogyo Co., Ltd.] can be used as commercial products. The average particle size of MAKIMOUSSE7 is 7.063 μm (measured using a laser diffraction particle size distribution meter), the average particle size of MAKIMOUSSE12 is 12.9 μm (measured using a laser diffraction particle size distribution meter), and the average particle size of MAKIMOUSSE25 Is 25.8 μm (measured using a laser diffraction particle size distribution meter), the appearance is white, and when observed with a scanning electron microscope, it has an irregular particle shape as shown in FIG. 1, FIG. 2, and FIG. It was. MAKIMOUSESE 7 forms a glossy and smooth gel, MAKIMOUSESE 12 forms a smooth mousse, and MAKIMOUSESE 25 forms a powdery mousse, and can be selected according to the application.

  In the cosmetic of the present invention, the above-mentioned sodium acrylate graft starch can be blended in the range of 0.1 to 10% by mass with respect to the total amount of the cosmetic.

As the metal oxide powder used in the cosmetic of the present invention, conventionally known ones can be used, but more preferably one or more selected from the group consisting of titanium oxide, zinc oxide, iron oxide and cerium oxide. Is a fine particle metal oxide powder having an average particle size of 5 to 500 nm.

These metal oxide powders may or may not be conventionally known surface treatment, but as a preferred example, hydrophilic surface treatment, for example, polyphosphoric acid treatment, PEG silane coupling agent treatment, Agar treatment, deoxyribonucleic acid treatment, lecithin treatment, polyacrylic acid treatment, alumina treatment or zirconia treatment, particularly preferably silica treatment can be mentioned, and one or more of these can be used in combination. Hydrophobic surface treatment can also be used, for example, methylhydrogenpolysiloxane treatment, silicone resin treatment, silicone gum treatment, acrylic silicone treatment, organosiloxane treatment such as fluorinated silicone treatment, zinc stearate, acylated amino acid Metal soap treatment such as metal salt treatment, silane coupling agent treatment, silane treatment such as alkyl silane treatment, organic titanate treatment, organic aluminate treatment, perfluoroalkyl silane, perfluoroalkyl phosphate ester salt, perfluoropolyether treatment Fluorine compound treatment such as, amino acid treatment such as N-lauroyl-L-lysine treatment, oil agent treatment such as squalane treatment, or acrylic treatment such as alkyl acrylate treatment, and the like. It is possible.

  In the cosmetic of the present invention, the metal oxide powder can be blended in the range of 0.1 to 50% by mass with respect to the total amount of the cosmetic.

  In the cosmetics according to the present invention, powders, preservatives, fragrances, moisturizers, ultraviolet absorbers, salts, solvents, resins, antioxidants, chelating agents, neutralizers, pH adjusters that are usually used in cosmetics Various components such as insect repellents and physiologically active components can be used as long as the object of the present invention is not impaired.

  Examples of oils include avocado oil, linseed oil, almond oil, ibotarou, eno oil, olive oil, cacao butter, kapok wax, kaya oil, carnauba wax, candelilla wax, kyounin oil, hydrogenated oil, wheat germ oil, sesame oil, rice Germ oil, rice bran oil, sugarcane wax, sasanqua oil, safflower oil, shea butter, cinnamon oil, cinnamon oil, jojoba wax, shellac oil, turtle oil, soybean oil, tea seed oil, camellia oil, evening primrose oil, corn oil, rapeseed Oil, Japanese Kiri oil, Nukarou, Germ oil, Persic oil, Palm oil, Palm kernel oil, Castor oil, Hardened castor oil, Castor oil fatty acid methyl ester, Sunflower oil, Grape oil, Bayberry wax, Jojoba oil, Macadamia nut oil, Beeswax, Mink oil, cottonseed oil, cotton wax, owl, owl kernel oil, montan wax Coconut oil, hydrogenated coconut oil, tricoconut oil fatty acid glyceride, peanut oil, lanolin, liquid lanolin, reduced lanolin, lanolin alcohol, hard lanolin, lanolin acetate, lanolin fatty acid isopropyl, hexyl laurate, POE lanolin alcohol ether, POE lanolin alcohol acetate, Lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin alcohol ether, egg yolk oil, etc .; hydrocarbon oils such as ozokerite, squalane, squalene, ceresin, paraffin, paraffin wax, liquid paraffin, pristane, polyisobutylene, microcrystalline wax, petrolatum, etc .; high grade Examples of fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid, oleic acid, linoleic acid, Nolenic acid, arachidonic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), isostearic acid, 12-hydroxystearic acid, etc .; higher alcohols include lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, hexa Decyl alcohol, oleyl alcohol, isostearyl alcohol, hexyl decanol, octyldodecanol, cetostearyl alcohol, 2-decyltetradecinol, cholesterol, phytosterol, POE cholesterol ether, monostearyl glycerol ether (batyl alcohol), monooleyl glyceryl ether (Ceracyl alcohol), etc .; As ester oils, diisobutyl adipate, 2-adipate 2- Hexyldecyl, di-2-heptylundecyl adipate, N-alkyl glycol monoisostearate, isocetyl isostearate, isononyl isononanoate, trimethylolpropane triisostearate, ethylene glycol di-2-ethylhexanoate, 2-ethylhexane Cetyl acid, trimethylolpropane tri-2-ethylhexanoate, pentaerythritol tetra-2-ethylhexanoate, cetyl octanoate, octyldodecyl gum ester, oleyl oleate, octyldodecyl oleate, decyl oleate, isononyl isononanoate, Neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, amyl acetate, ethyl acetate, butyl acetate, isocetyl stearate, butyl stearate Diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl palmitate, 2-heptyl undecyl palmitate, cholesteryl 12-hydroxystearylate, Dipentaerythritol fatty acid ester, isopropyl myristate, octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, hexyldecyl dimethyloctanoate, ethyl laurate, hexyl laurate, N-lauroyl-L-glutamate-2- Octyldodecyl ester, diisostearyl malate, etc .; glyceride oils include acetoglyceryl, glyceryl triisooctanoate, triisostearate Seryl, tri (capryl / capric acid) glycerin, glyceryl triisopalmitate, glyceryl monostearate, glyceryl di-2-heptylbovine decanoate, glyceryl trimyristate, diglyceryl myristate; diglyceryl myristate; Examples thereof include polysiloxane, biphenylsiloxane, decamethylcyclopentasiloxane, methyltrimethicone, alkyl-modified silicone, and fluorosilicone. Also included are polyhydric alcohols such as glycerin, isoprene glycol, 1,3-butylene glycol, dipropylene glycol, propylene glycol, diglycerin, maltitol, and malbit liquid.

  The cosmetics of the present invention include gels, emulsions, creams, lotions, calamine lotions, sunscreen agents, suntan agents, after-shave lotions, pre-shave lotions, packs, cleansing agents, facial cleansers, acne-preventing cosmetics, essence and other skins. Care cosmetics, foundation, eye shadow, eyeliner, eyebrow, teak, lipstick, nail color and other makeup cosmetics, shampoo, rinse, conditioner, hair color, hair tonic, set hair and other cosmetics, body powder, Deodorant, hair remover, soap, body shampoo, bath agent, hand soap, perfume and the like.

  The present invention will be described in more detail below with reference to examples, but the present invention is not limited thereto. The evaluation in each example and comparative example is a case where 10 female panelists are used and the test product is used and the feeling of use is answered in a questionnaire format. The score was 5 and the average score of the panelists was used as the evaluation result. Therefore, the higher the score, the better the evaluation.

[Examples 1-2, Comparative Examples 1-2]
An oil-in-water sunscreen was prototyped according to the formulation and manufacturing method shown in Table 1. The unit of the blending amount is mass%.

Manufacturing Method Component B was added to Component C, which was uniformly mixed, and mixed well. Component A was added to Component C with stirring and mixed well to obtain a product.

  From the results shown in Table 1, Examples 1 and 2 of the present invention exhibited a smooth gel-like or powdery mousse shape due to the difference in the particle size of the sodium acrylate grafted starch. It had a feeling and was excellent in stability over time. In contrast, Comparative Example 3 exhibited a smooth gel shape and was excellent in usability, but was inferior in terms of stability over time. Further, in Comparative Example 4, after the adjustment, the viscosity was increased and separated immediately, and the product could not be adjusted.

[Examples 3 and 4]
An oil-in-water type foundation was prototyped according to the formulation and manufacturing method shown in Table 2. The unit of the blending amount is mass%.

Manufacturing Method Component B was added to Component C, which was uniformly mixed, and mixed well. Component A was added to Component C with stirring and mixed well to obtain a product.

  From the results shown in Table 2, Examples 3 and 4 of the present invention have a smooth gel-like or smooth mousse shape due to the difference in particle diameter of Na-acrylate grafted starch, and are not sticky, smooth and refreshing. It had a feeling and was excellent in stability over time.

  An aqueous mousse-like eye shadow was produced according to the formulation and production method shown in Table 3. The unit of the blending amount is mass%.

Production Method Ingredient A is uniformly mixed and added to ingredient B while stirring, and ingredient C is added and mixed well. The resulting mousse mixture was filled into a container to obtain a product.

  This aqueous mousse-like eye shadow had a powdery mousse shape, was not sticky, had a smooth and refreshing feeling of use, and was excellent in stability over time.

  A water-based mousse-like blusher was prototyped according to the formulation and manufacturing method shown in Table 4. The unit of the blending amount is mass%.

Production Method Ingredient A is uniformly mixed and added to ingredient B while stirring, and ingredient C is added and mixed well. The resulting mousse mixture was filled into a container to obtain a product.

  This aqueous mousse-like blusher had a smooth mousse shape, was not sticky, had a smooth and refreshing feeling of use, and was excellent in stability over time.

  An oil-in-water skin cream was prototyped according to the formulation and manufacturing method shown in Table 5. The unit of the blending amount is mass%.

Production Methods Components A and C were heated to 80 ° C. and Component B was added to Component A. Component C was added to the mixture of Components A and B with stirring and mixed well. The mousse mixture was filled into a container and slowly cooled to obtain a product.

This oil-in-water type skin cream had a smooth gel shape, was not sticky, had a smooth and refreshing feeling, and was excellent in stability over time.

  Aqueous mousse cleansing was made according to the formulation and manufacturing method of Table 6. The unit of the blending amount is mass%.

Production Method Component A was mixed well and added to Component B with stirring. The resulting mousse mixture was filled into a container to obtain a product.

  This aqueous mousse cleansing exhibited a smooth mousse, was not sticky, had a smooth and refreshing feel, and was excellent in stability over time.

  An oil-in-water hair cream was produced according to the formulation and production method shown in Table 7. The unit of the blending amount is mass%.

Production Method Ingredients A and B were heated to 80 ° C., and ingredient A was added to B and mixed well. The obtained mousse mixture was filled in a container and slowly cooled to obtain a product.

  This oil-in-water hair cream had a smooth gel shape, was not sticky, had a smooth and refreshing feeling, and was excellent in stability over time.

  Example of scanning electron micrograph of MAKIMOUSSE7 manufactured by Daito Kasei Kogyo Co., Ltd.   Example of scanning electron micrograph of MAKIMOUSSE12 manufactured by Daito Kasei Kogyo Co., Ltd.   Example of a scanning electron micrograph of MAKIMOUSSE25 manufactured by Daito Kasei Kogyo Co., Ltd.

Claims (5)

  An aqueous or oil-in-water cosmetic comprising metal oxide powder and Na-acrylate grafted starch.   The aqueous or oil-in-water cosmetic according to claim 1, wherein the metal oxide powder is one or more selected from the group consisting of titanium oxide, zinc oxide, iron oxide, and cerium oxide. .   The aqueous or oil-in-water cosmetic according to claim 1 or 2, wherein the metal oxide powder is a fine particle metal oxide powder having an average particle size of 5 to 500 nm.   The aqueous or oil-in-water cosmetic according to claim 1, wherein the metal oxide powder is subjected to a hydrophilic surface treatment.   The aqueous or oil-in-water cosmetic according to claim 1, wherein the hydrophilic surface treatment is a silica treatment.