JP3529695B2 - Composite powder and cosmetics - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to powders and cosmetics. More specifically, the powders are subjected to adsorption coating treatment with an ester oil agent and subsequent coating treatment with N-acylated lysine. The present invention relates to a composite powder, which is obtained by performing a composite treatment as a repeating unit once or twice or more, and a cosmetic containing the composite powder. Further, more specifically, a step of uniformly adsorbing and coating the surface of the powder with an ester-based oil agent having a good compatibility with N-acylated lysine, and appropriately adjusting the hydrophilic-hydrophobic balance of the surface, and an acidic aqueous solution. When an alkaline solution of N-acylated lysine was added to the ester-based oil agent adsorbent powder dispersed therein, or the ester-based oil agent adsorbent powder was dispersed in an alkaline aqueous solution in which N-acylated lysine was dissolved. An acidic aqueous solution is added to the N-acylated lysine to selectively deposit and crystallize N-acylated lysine on the powder surface due to the adhesive effect and the crystal growth control effect of the ester-based oil agent. The interaction between the powders is weakened and the agglomeration is weakened, which is obtained by performing the compounding treatment once or twice or more as a single repeating unit by continuously performing the step of forming a film. Characterized in that is suppressed, soft touch, excellent adhesion was formulated moisture retention, composite powder having both ductility, and the composite powder,
The present invention relates to a cosmetic material having a soft feel, a smooth application feeling, a high moisturizing feeling, a uniform finish, and excellent makeup lasting.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention are as follows.
The coating of powders with N-acylated lysine is disclosed in JP-A-61-7207, JP-A-61-10503, JP-A-61-69709, and JP-A-97898.
It is widely known in Japanese Patent Publication No. 9 and the like. As a method of coating the powders with N-acylated lysine, a method of slowly adding an alkaline solution of N-acylated lysine to an acidic aqueous powder slurry under stirring, or an alkaline solution of N-acylated lysine Although a method of slowly adding an acidic substance to the slurry of powder after slowly adding the liquid to the slurry of powder is used, in these methods, for flaky powders such as sericite and barium sulfate plate, etc. However, if the amount of treatment is not particularly large, a uniform treated film can be obtained, but if the amount of treatment is increased, when treating non-flake powders such as titanium oxide and fine particles, the surface characteristics It has been known that flakes of N-acylated lysine having a large particle size are inevitably precipitated when treating a powder having a poor compatibility with N-acylated lysine. N- deposited alone
Acylated lysine has a problem in that the feel is lowered, and the cosmetics containing the lysine cause deterioration in performance such as application feeling and makeup lasting.

In JP-A-5-58842, powders are surface-treated with an N-mono long-chain acyl basic amino acid containing N-acylated lysine and then double-treated with an oil or fat having an acidic group. It is stated that a powder with improved water repellency is obtained. Furthermore, JP-A-7-242
No. 838 discloses a modified powder in which cohesiveness is suppressed and wettability is improved by adding an oil agent such as silicones after the acylated lysine treatment and physically adsorbing it on the surface of the treated powder. The manufacturing technology has also been reported. However, in both of the above-mentioned two methods, the following second treatment agent is added after treating the surface of the mother powder with N-mono long-chain acyl basic amino acid. The deposition state (coating layer) of long-chain acyl basic amino acids was not affected at all, and the problem of simple deposition of flaky acylated lysine having a large particle size remained.

On the other hand, in Japanese Patent Laid-Open No. 9-31358, after treating powders with a solid organic substance such as N-acylated lysine, the precipitated crystal shape control effect of the solid organic substance and proper aggregation are obtained. An easily disintegrating soft agglomerate powder with excellent slidability and rolling property has been proposed by adding a small amount of a liquid oily agent with repulsion and then re-processing with a solid organic substance. The present invention is intended to control the crystals of a solid organic substance such as N-acylated lysine to be in the form of small pieces, and to express the differentiated functional characteristics by the aggregation and complexation thereof. It was different from the purpose of forming a uniform treated film of No. 3, and improving the performance such as feeling in use.

Further, Japanese Patent Laid-Open No. 2000-7942 proposes an inorganic pigment which is coated with an N-long-chain acylamino acid ester and has excellent dispersibility, low irritation, and excellent usability. However, the study of conjugation treatment using a combination of N-long-chain acylamino acid ester and N-acylated lysine has not been conducted.

[0006]

In view of the above problems, the inventors of the present invention prevent the N-acylated lysine from precipitating alone in the treatment step, form a uniform treatment film on the powder surface, and use it. As a result of intensive studies on a method of enhancing the feel, the surface of the mother powder to be treated is excellent in adsorption to the mother powder,
After thinly and uniformly coating with an ester-based oil agent having good compatibility with the acylated lysine to balance the hydrophilicity-hydrophobicity of the surface, an alkaline solution of N-acylated lysine was dispersed in a powder. Adding in acidic aqueous solution, or N-
By applying a coating treatment such as adding an acidic aqueous solution to a dispersion of the ester-based oil agent-adsorbing powder in an alkaline aqueous solution in which an acylated lysine is dissolved, the ester-based oil agent N -The function of adhering acylated lysine and the function of controlling the growth of N-acylated lysine crystals are effectively exhibited to form a uniform treated film of N-acylated lysine, and N-acylated lysine alone is formed. A feeling of use is remarkably improved as compared with the coating treatment, and by repeating the same operation and continuing the second and third complexing treatments, an ester-based oil agent layer and an N-acylated lysine uniform thin film layer are formed. It was found that a composite powder having a multi-layered treatment layer, having reduced cohesiveness, soft touch and excellent adhesion, moisturizing property, and spreadability can be obtained.
Furthermore, the cosmetics containing the composite powder have a soft touch.
The present invention has been completed by finding out that it has a smooth application feeling and a high moisturizing feeling, a uniform feeling of finish, and excellent durability of makeup.

That is, according to the present invention, powders are subjected to a composite treatment, which comprises adsorption coating treatment with an ester oil agent and subsequent coating treatment with N-acylated lysine as one repeating unit once or The composite powder is obtained by applying the powder twice or more, and the cosmetics containing the powder.

[0008]

DETAILED DESCRIPTION OF THE INVENTION

As an example of the powder used in the present invention, red 1
04 aluminum lake, red 102 aluminum lake, red 226, red 201, red 202,
Blue No. 1 aluminum lake, yellow No. 4 aluminum lake, yellow No. 5 aluminum lake, yellow No. 203 barium lake, and other pigments and lake pigments, nylon powder, silk powder, urethane powder, Teflon (registered trademark) powder, silicone powder, poly Methyl methacrylate powder, cellulose powder, silicone elastomer spherical powder, polyethylene powder and other polymers, yellow iron oxide, red iron oxide, black iron oxide, chromium oxide, carbon black, ultramarine blue, colored pigments such as navy blue, zinc oxide, titanium oxide , White pigments such as cerium oxide, body pigments such as talc, mica, sericite, kaolin and tabular barium sulfate, pearl pigments such as titanium mica, and metals such as barium sulfate, calcium carbonate, magnesium carbonate, aluminum silicate and magnesium silicate. salt, Rica, spherical silica, an inorganic powder such as alumina, bentonite, smectite, boron nitride,
Examples thereof include fine particle titanium oxide and fine particle zinc oxide. There is no particular limitation on the shape of these powders (spherical, rod-shaped, needle-shaped, plate-shaped, irregular-shaped, scaly, spindle-shaped, etc.).

As the ester type oil agent used in the present invention,
There is no particular limitation as long as it is used in cosmetics such as fatty acid ester. Specifically, for example, didecyl adipate, (adipic acid-2-ethylhexanoic acid / stearic acid) glyceryl oligoester, ethyl isostearate, cetyl isostearate, isopropyl isostearate, octyl isostearate, isostearyl isostearate, Glyceryl isostearate, hydrogenated castor oil isostearic acid, cholesteryl isostearate, batyl isostearate, phytosteryl isostearate, hexyl isostearate, polyoxyethylene glyceryl isostearate, polyoxyethylene isostearate castor oil, isononony isononanoate, isotridecyl isononanoate, Isopalmitic acid 2
-Ethylhexyl, 2-ethylhexyl isoperargonic acid, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, stearyl 2-ethylhexanoate,
Octyldodecyl erucate, octyl oxystearate, isocetyl octanoate, isostearyl octanoate, isodecyl oleate, octyldodecyl oleate, oleyl oleate, ethyl oleate, glyceryl oleate, diglyceryl oleate, cholesteryl oleate, olein. Acid dihydrocholesteryl, decyl oleate, phytosteryl oleate, cetyl caprylate, ethylene glycol dioctanoate, ethylene glycol dioleate, dipropylene glycol dicaprate, neopentyl glycol dicaprate, propylene glycol dioleate, neo dioctanoate Pentyl glycol, propylene glycol dicaprylate, dipentaerythritol fatty acid ester, diparamethoxycinnamic acid Glyceryl 2-ethylhexanoate, hexyldecyl dimethyloctanoate, octyldodecyl dimethyloctanoate, dicoconut oil fatty acid pentaerythritol, ethyl stearate, stearic acid hydrogenated castor oil, 2-ethylhexyl stearate, isocetyl stearate, diglyceryl stearate. Stearyl stearate, butyl stearate, cholesteryl stearate, isocetyl 12-stearoyl hydroxystearate, stearyl 12-stearoyl hydroxystearate, isostearyl 12-stearoyl hydroxystearate, pentaerythritol tetra-2-ethylhexanoate, tetramyristic acid Pentaerythritol, pentaerythritol tetraisostearate, glyceryl tri-2-ethylhexanoate, Octanoic acid trimethylolpropane, trimethylolpropane triisostearate, triisooctanoate trimethylolpropane triisostearate, polyoxyethylene hydrogenated castor oil, tri-oxy monostearate, glyceryl tricaprylate, tri (caprylic acid-capric acid)
Glyceryl, tri (caprylic acid / capric acid / myristic acid / stearic acid) glyceride, glyceryl triundecylate, glyceryl triisopalmitate, glyceryl triisostearate, triglyceride tallow fatty acid glyceryl,
Trilanolin fatty acid glyceryl, hard lanolin fatty acid cholesteryl, soft lanolin fatty acid cholesteryl, octyldodecyl lactate, lauryl lactate, octyldodecyl neopentanoate, isopropyl palmitate, 2-ethylhexyl palmitate, isocetyl palmitate, isostearyl palmitate, hydroxy hydroxy palmitate. Cholesteryl stearate, 2-ethylhexyl hydroxystearate, dipentaerythritol hexaoxystearate, isotridecyl myristate, isocetyl myristate, isostearyl myristate, octyldodecyl myristate, decyl myristate, myristyl myristate, cetyl myristate, Butyl myristate, monohydroxystearic acid hydrogenated castor oil, isolauric acid Tearyl, dilauroylglutamate (cholesteryl octyldodecyl), dilauroylglutamate (phytosteryl octyldodecyl), dilauroylglutamate (phytosteryl behenyl octyldodecyl), hexyl laurate, lanolin fatty acid isostearyl, lanolin fatty acid isopropyl, lanolin Dodecyl, lanolin fatty acid cholesteryl, octyldodecyl ricinoleate, glyceryl ricinoleate, cetyl ricinoleate, ethyl linoleate, isopropyl linoleate, diisostearyl malate and the like can be mentioned.

Of these, lauroyl glutamic acid di (cholesteryl octyldodecyl) and lauroyl, which have a high adsorptivity to powders, an appropriate hydrophilic-hydrophobic balance, and a high interaction with N-acylated lysine. Long-chain acylglutamic acid ester derivatives such as di (phytosteryl octyldodecyl) glutamate and di (phytosteryl behenyl octyl dodecyl) lauroyl glutamate are preferable. Further, among the derivatives, lauroyl glutamate di (cholesteryl octyldodecyl) is particularly preferable.

The treatment amount of the ester-based oil agent used in the present invention with respect to the powders varies depending on various characteristics such as the shape of the powder, the surface area, and the maximum oil agent adsorption amount. Is preferably 0.05 to 10 parts by mass, and more preferably 0.2 to 5 parts by mass. Within this range, the surface of the powder can be uniformly covered without being liberated during the treatment step and the deposition state of N-acylated lysine can be controlled, and the effect of adhesion is effectively exhibited.

When the treatment with the ester-based oil agent is performed twice or more, the total treatment amount for the powders depends on various characteristics such as the shape of the powder, the surface area, and the maximum oil agent adsorption amount. The amount is preferably 0.05 to 20 parts by mass, more preferably 0.2 to 15 parts by mass with respect to parts by mass. Within this range, the effect of forming a uniformly treated coating film of N-acylated lysine is high without developing a sticky feeling as a whole.

When the treatment with the ester-based oil agent is performed twice or more, it is possible to use one kind or two or more kinds of the ester-based oil agent.

In the present invention, as a method for uniformly adsorbing and coating an ester oil agent on the surface of powders, the dry method is as follows:
Henschel mixer, ball mill, a method of mixing powders and ester-based oil agent in a mixing and stirring device such as a super mixer, in the wet, where the powders are well dispersed in a suitable solution that does not dissolve both, Examples include a method in which the ester-based oil agent is added as it is or after being dissolved in a solvent such as alcohol, diethyl ether, isopropyl ether, and toluene, and well stirred, and if necessary, filtration, drying, and pulverization are performed. However, the wet method is more preferable because the adsorption film has high uniformity and the flow of operation is smooth.

The N-acylated lysine used in the present invention has one or more aliphatic acyl groups having 8 to 22 carbon atoms in the molecule, and examples thereof include N-lauroyl lysine and N-myristyl lysine. , N-stearyl lysine,
Examples thereof include N-behenyl lysine, and among these, N-lauroyl lysine, which is excellent in touch, is particularly preferable.

The amount of N-acylated lysine used in the present invention applied to the powder is 100 parts by mass of the powder.
The amount is preferably 0.2 to 10 parts by mass, more preferably 0.3 to 7 parts by mass, per treatment. Within this range, a single film of N-acylated lysine does not precipitate, a uniform film is formed, and the stickiness of the ester oil is not felt at all.

When the coating treatment with N-acylated lysine is carried out twice or more, the total treatment amount for the powders is preferably 0.4 to 40 parts by mass with respect to 100 parts by mass of the powders, and further, It is preferably 2 to 20 parts by mass. Within this range, a single film of N-acylated lysine does not precipitate, a uniform film is formed, and the effect of reducing cohesiveness is high.

In the present invention, the method for coating the surface of the powder with N-acylated lysine is N-acylation in an acidic aqueous solution in which the powder in which the ester oil agent is uniformly adsorbed on the surface is well dispersed. An N-acylated lysine is added by slowly adding an alkaline solution of lysine or by adding an acidic aqueous solution to the place where the ester-based oil agent adsorption powder is dispersed in the alkaline aqueous solution in which N-acylated lysine is dissolved. A wet method for forming a uniform treated film of In this case, it is possible to add the ester-based oil agent as it is without performing operations such as filtration, desalting, drying, and, in some cases, crushing when performing the next treatment, which is convenient. Is. Needless to say, there is no problem even after operations such as filtration, desalting, drying, and, in some cases, crushing.

In the present invention, when the complexing treatment with the combination of the ester-based oil agent and the N-acylated lysine is repeated twice or more, the number of times is not a troublesome operation,
N-acylated lysine precipitation state is controlled, and the effect of forming a uniform treatment film is not reduced 1 to 10 times
It is preferably twice, particularly preferably 2 to 5 times.

The composite powder thus obtained has a form in which a thin film layer of an ester-based oil agent is provided on the innermost layer on the surface of the powder, and a uniform film of N-acylated lysine is firmly covered on it. Or, further, it has a form in which an ester-based oil agent layer and an N-acylated lysine layer are alternately covered one or more times each, and aggregation between powders is almost suppressed, resulting in a very high dispersibility. With a soft touch and excellent adhesion,
It has both moisturizing and spreading properties.

In the cosmetic of the present invention, the composite powder is blended in an amount of 1 to 99% by mass per 100 parts by mass of the cosmetic. Within this range, the soft feel due to the composite powder
It gives a smooth application feeling and high moisturizing effect, and gives a uniform feeling of finish and an excellent effect of long-lasting makeup.

In addition to the above-mentioned components, the cosmetic of the present invention contains an oil agent, powder (pigment, dye,
Resin), fluorine compound, resin, surfactant, viscous agent, preservative, perfume, ultraviolet absorber (including organic type and inorganic type. UV
-It may correspond to either A or B), it is possible to use components such as physiologically active ingredients, salts, solvents, antioxidants, chelating agents, neutralizing agents, pH adjusting agents, insect repellents, etc. it can.

Examples of the oil agent include volatile and non-volatile oil agents and solvents and resins usually used in cosmetics,
It may be liquid, paste or solid at room temperature. Examples of oil agents include cetyl alcohol, isostearyl alcohol, lauryl alcohol, hexadecyl alcohol, higher alcohols such as octyldodecanol, isostearic acid, undecylenic acid, fatty acids such as oleic acid, glycerin, sorbitol, ethylene glycol, and the like.
Propylene glycol, polyethylene glycol, polyhydric alcohols such as raffinose, myristyl myristate, hexyl laurate, decyl oleate, isopropyl myristate, hexyldecyl dimethyloctanoate, glyceryl monostearate, diethyl phthalate,
Esters such as ethylene glycol monostearate and octyl oxystearate, hydrocarbons such as liquid paraffin, paraffin, petrolatum and squalane, lanolin,
Reduced lanolin, carnauba wax, candelilla wax, ceresin, ozokerite, waxes such as microcrystalline wax, mink oil, cacao butter, coconut oil, palm kernel oil, camellia oil, sesame oil, castor oil, oils and fats such as olive oil, ethylene- Olefin / Cooligomer, Polyethylene /
Examples thereof include ethylene propylene copolymer.

Examples of the powders include the above-mentioned powders and surface-treated powders thereof. In particular, spherical powders and silicone elastomers having an elastomeric property are preferable because they have a high feel adjusting ability. In addition, the use of a water-absorbing or oil-absorbing powder or a water-repellent powder can further enhance the makeup-holding effect. As the water-repellent powder, it is preferable to use one that has been surface-treated with a perfluoroalkyl phosphate ester salt or a silicone compound.

Examples of the physiologically active ingredient include substances that give some kind of physiological activity to the skin when applied to the skin. For example, whitening ingredients, anti-inflammatory agents, anti-aging agents, UV protection agents, slimming agents, tightening agents, antioxidants, hair growth agents, hair growth agents, moisturizers, blood circulation promoters, antibacterial agents, bactericides, drying agents, A cooling sensation, a warming sensation, vitamins, amino acids, a wound healing promoter, a stimulant relieving agent, an analgesic, a cell activating agent, an enzyme component and the like can be mentioned. Among them, natural plant extracts,
Seaweed extract components and crude drug components are particularly preferable. In the present invention,
It is preferable to blend one or more of these physiologically active ingredients.

Examples of these components include, for example, ashitaba extract, avocado extract, armature extract, altea extract, arnica extract, aloe extract, apricot extract, apricot kernel extract, ginkgo biloba extract, fennel extract, turmeric extract, oolong tea extract, agets. Extract, Chinese cabbage leaf extract, sardine extract, psyllium extract, scutellaria extract, barley extract, St. John's wort extract, sardine extract, Dutch mustard extract, orange extract, seawater dried product, seaweed extract, hydrolyzed elastin, hydrolyzed wheat powder, hydrolyzed silk , Chamomile extract, carrot extract, wormwood extract, licorice extract, karkade extract, oyster extract, kiwi extract, kina extract, cucumber extract, guanosine,
Gardenia extract, Kumazasa extract, Clara extract, Walnut extract, Grapefruit extract, Clematis extract, Chlorella extract, Mulberry extract, Gentian extract,
Black tea extract, yeast extract, burdock extract, rice bran fermented extract, rice germ oil, comfrey extract, collagen,
Bilberry extract, Cycin extract, Psycho extract, Cai Tai extract, Salvia extract, Sorbour extract, Sasa extract, Hawthorn extract, Hawthorn extract, Shiitake extract, Dio extract, Sikon extract, Perilla extract, Shinanoki extract, Shimotsukisou extract, Peony extract, Shobu root extract , Birch extract, horsetail extract, Ivy extract, Hawthorn extract,
Sambucus nigra extract, yarrow extract, mint extract, sage extract, mallow extract, senkyu extract, senburi extract, soybean extract, turmeric extract, thyme extract, tea extract, clove extract, chigaya extract, chinpi extract, touki extract, daffodil extract, tounin extract. , Spruce extract, dokudami extract, tomato extract, natto extract, carrot extract, garlic extract, novara extract, hibiscus extract, bakumondou extract, lotus extract, parsley extract, honey, hamamelis extract, parietalia extract, Hikiokoshi extract, bisabolol, loquat extract, Coltsfoot extract, butterbur extract, butterbur extract, butcher bloom extract, grape extract, propolis, loofah extract Safflower extract, peppermint extract, bodice extract, button extract, hop extract, pine extract, horse chestnut extract, sphagnum extract, sucrose extract, melissa extract, peach extract, cornflower extract, eucalyptus extract, Yukinoshita extract, yuzu extract, yokuinin extract, wormwood extract, lavender extract. , Apple extract, lettuce extract, lemon extract, astragalus extract, rose extract, rosemary extract, Roman chamomile extract, royal jelly extract and the like.

Examples of the cosmetics of the present invention include lipsticks,
Examples include makeup cosmetics such as foundations, eye shadows, white powder, cheeks, and concealers, and basic cosmetics such as creams and sunscreens.

[0029]

EXAMPLES The present invention will be described in detail below with reference to examples and comparative examples. First, the evaluation methods for various properties of the cosmetics used in Examples and Comparative Examples are shown below.

10 skin professionals for each evaluation item are prepared (however, the panelists may overlap depending on the item), the evaluation is performed according to the following evaluation criteria, and the average score of all the panelists Was used as the evaluation result. Therefore, the larger the score, the higher the usefulness for the evaluation item.

[0031]

Example 1 Each of the red iron oxide, yellow iron oxide, black iron oxide, titanium oxide, titanium mica, and titanium mica-coated mica was subjected to the following composite treatment. 38 parts by mass of powder is purified water 250
After being well dispersed in 1 part by mass, 2.8 parts by mass of 6 mol / L hydrochloric acid was added, and dilauroylglutamate di (cholesteryl octyldodecyl) (Eldew CL
-202, manufactured by Ajinomoto Co., Inc.) 0.4 parts by mass was added and well stirred. On the other hand, 2.0 parts by mass of N-lauroyl-L-lysine (Amihope LL, manufactured by Ajinomoto Co., Inc.) was dissolved in a mixed solution of 3.6 parts by mass of a 5 mol / L sodium hydroxide aqueous solution and 26 parts by mass of purified water. Divide into four equal parts, one of them
Was added to the above powder dispersion. Then, dilauroyl glutamate (phytosteryl octyldodecyl)
(Erdu PS-203, manufactured by Ajinomoto Co., Inc.) 0.2 part by mass was added, and after thoroughly stirring, an alkali solution of N-lauroyl-L-lysine, which was divided into four equal parts, was added, and this operation was repeated twice more. It was 1 mol / L hydrochloric acid or 1 mol /
After neutralizing with L sodium hydroxide aqueous solution, the cake obtained by filtration and washing with water is transferred to a metal vat,
Drying was carried out for 24 hours with a blower dryer set at 0 degree to obtain the composite powder of the present invention. According to electron microscopic observation, the obtained composite powder showed little aggregation between the powders, almost no single-piece deposition of flaky N-lauroyl-L-lysine crystals was observed, and had a uniform treated film. I confirmed that. In addition, it has a soft touch and is adhesive,
It was excellent in moisture retention and spreadability.

Example 2 A plate-shaped barium sulfate (36 parts by mass) was well dispersed in purified water (160 parts by mass), 6 mol / L hydrochloric acid (5.6 parts by mass) was added, and lauroylglutamate di (phytosteryl octyldodecyl) was further added. 0.3 part by mass was added and well stirred. On the other hand, N-lauroyl-L-lysine 4.0
A solution prepared by dissolving 7 parts by mass of a 5 mol / L sodium hydroxide aqueous solution and 26 parts by mass of purified water was divided into 3 equal parts, and one of them was added to the above powder dispersion. Subsequently, 0.3 part by mass of di (cholesteryl octyldodecyl) lauroyl glutamic acid was added, and after well stirring, an alkaline solution of N-lauroyl-L-lysine divided into three equal parts was added, and this operation was repeated once again. It was At this time, the pH of the powder dispersion was 8.5. pH
While confirming the pH of the dispersion with a meter, 1 mol /
Neutralization (pH about 7.
0) was completed, the mixture was stirred for 15 minutes, and then filtered and washed with water. Subsequently, it was dried for 24 hours with a blower dryer set at 80 degrees to obtain 40.7 g of the composite powder of the present invention. It was confirmed that the obtained composite powder had a uniform treated film, with little aggregation of the powders observed by electron microscopy and almost no precipitation of N-lauroyl-L-lysine as a simple substance. did. Also, it had a soft feel to the touch, and was excellent in adhesion, moisture retention and spreadability.

Example 3 Each of Red No. 201, red iron oxide, titanium oxide, titanium mica, and red iron oxide coated mica titanium was subjected to the following composite treatment. When 38 parts by mass of the powder was well dispersed in 160 parts by mass of purified water, 2.8 parts by mass of 6 mol / L hydrochloric acid was added, and further 0.2 parts by mass of dilauroylglutamate (cholesteryl octyldodecyl) was added, Stir well. On the other hand, N-lauroyl-L-lysine 2.0
What melt | dissolved the mass part in the mixed solution of 3.6 mass parts of 5 mol / L sodium hydroxide aqueous solution and 26 mass parts of purified water was divided into 4 equal parts, and one of them was thrown into the said powder dispersion liquid. Subsequently, 0.2 part by mass of di (cholesteryl octyldodecyl) lauroyl glutamic acid was added, and after thoroughly stirring, the alkali solution of N-lauroyl-L-lysine, which had been divided into four equal parts, was added, and this operation was repeated for 2 more times. Repeated once. After neutralizing with 1 mol / L hydrochloric acid or 1 mol / L sodium hydroxide aqueous solution, the cake obtained by filtration and washing with water is transferred to a metal vat and dried for 24 hours by a blow dryer set at 80 degrees. Then, the composite powder of the present invention was obtained. The obtained composite powder has a uniform treated film with little aggregation of the powders observed by electron microscopy, almost no precipitation of flaky N-lauroyl-L-lysine crystals, and a uniform coating film. I confirmed that. Also, it had a soft feel to the touch, and was excellent in adhesion, moisture retention and spreadability.

Example 4 Red 226, Yellow 401, Gunjou, Titanium oxide, Carmine coated mica titanium, red iron oxide / black iron oxide coated titanium mica, talc, mica, red iron oxide, yellow iron oxide The chemical treatment was performed. When 38 parts by mass of the powder was well dispersed in 250 parts by mass of purified water,
2.8 parts by mass of 6 mol / L hydrochloric acid was added, and further 1.0 part by mass of di (phytosteryl octyldodecyl) lauroyl glutamate was added, followed by thorough stirring. N to this
-Lauroyl-L-lysine 2.0 parts by mass 5 mol / L
What was dissolved in a mixed solution of 3.6 parts by mass of an aqueous sodium hydroxide solution and 26 parts by mass of purified water was slowly added, and 1
Neutralization was performed using mol / L hydrochloric acid or 1 mol / L sodium hydroxide aqueous solution. After stirring for 15 minutes, the cake obtained by filtration and washing with water was transferred to a metal vat and dried for 24 hours by a blow dryer set at 80 degrees to obtain a composite powder of the present invention. The obtained composite powder has a uniform treated film with little aggregation of the powders observed by electron microscopy, almost no precipitation of flaky N-lauroyl-L-lysine crystals, and a uniform coating film. I confirmed that. Also, it had a soft feel to the touch, and was excellent in adhesion, moisture retention and spreadability.

Comparative Example 1 Red iron oxide, iron oxide yellow, iron oxide black, titanium oxide, titanium mica, and titanium mica-coated mica were subjected to the following treatments. When 38 parts by mass of the powder was well dispersed in 250 parts by mass of purified water, 2.8 parts by mass of 6 mol / L hydrochloric acid was added and well stirred. N-lauroyl-L
A solution prepared by dissolving 2 parts by mass of lysine in 3.6 parts by mass of a 5 mol / L sodium hydroxide aqueous solution and 26 parts by mass of purified water was slowly added to the powder dispersion liquid, and then the pH of the dispersion liquid was obtained.
Was adjusted to around 7.0. Subsequently, 1.0 part by mass of N-lauroylglutamate di (cholesteryl octyldodecyl) was added, and the mixture was stirred for 20 minutes. The cake obtained by filtering and rinsing the dispersion was transferred to a metal vat, dried for 24 hours with a blow dryer set at 80 degrees, and pulverized with a mixer to obtain a coated powder. The obtained composite powder is N-lauroyl-L according to an electron microscope observation.
-A simple substance of lysine powder It was confirmed that a large amount of large flaky powder that had precipitated was mixed in, and a sticky feeling was strongly felt to the touch.

Comparative Example 2 Red iron oxide, yellow iron oxide, black iron oxide, titanium oxide, red 20
The following treatments were performed on No. 1, titanium oxide, mica titanium, red iron oxide-coated titanium mica, red 226, yellow yellow 401, Gunjou, carmine-coated titanium mica and red iron oxide / black iron oxide-coated titanium mica. When 38 parts by mass of the powder was well dispersed in 250 parts by mass of purified water,
2.8 parts by mass of mol / L hydrochloric acid was added and well stirred. 5 parts by mass of 2 parts by mass of N-lauroyl-L-lysine.
A solution prepared by dissolving 3.6 parts by mass of L sodium hydroxide aqueous solution and 26 parts by mass of purified water was slowly added to the above powder dispersion, and then the pH of the dispersion was adjusted to around 7.0. Transfer the cake obtained by filtration and washing to a metal vat,
Drying was carried out for 24 hours with an air-blast dryer set to a certain degree, and pulverized with a mixer to obtain a coated powder. The obtained composite powder is N-lauroyl-
It was confirmed that a large amount of large flaky powders of L-lysine powder, which were precipitated alone, were mixed.

Comparative Example 3 Red 226, Yellow 401, Gunjou, Titanium oxide, Carmine coated mica titanium, red iron oxide / black iron oxide coated mica titanium, talc, mica, red iron oxide, yellow iron oxide The chemical treatment was performed. When 38 parts by mass of the powder was well dispersed in 250 parts by mass of purified water,
2.8 parts by mass of 6 mol / L hydrochloric acid was added and well stirred. 5 mol of 2 parts by mass of N-lauroyl-L-lysine
/ L sodium hydroxide aqueous solution 3.6 parts by mass and purified water 26
What was melt | dissolved in the mass part was slowly added to the said powder dispersion liquid, and pH of the dispersion liquid was adjusted to about 7.0. Subsequently, 0.4 parts by mass of N-lauroylglutamate di (phytosteryl octyldodecyl) was added and stirred for 20 minutes. The cake obtained by filtration and washing with water was transferred to a metal vat, dried for 24 hours by a blow dryer set at 80 degrees, and pulverized by a mixer to obtain a coated powder. The obtained composite powder was confirmed by electron microscope observation to contain a large amount of large flaky powder in which N-lauroyl-L-lysine powder was precipitated as a simple substance. It was a strong feeling.

Comparative Example 4 (Untreated) The powders themselves used in Examples 1 to 4 (those not subjected to the composite treatment) were referred to as Comparative Examples 4 to 7.

Examples 5 and 6 and Comparative Examples 5 to 8 (Powder Foundation) Powder foundations were prepared according to the formulation and manufacturing method shown in Table 1.

[0041]

[Table 1]

Manufacturing method The oily component is heated and mixed, slowly added over the premixed powder component, further stirred, and then passed through a 60 mesh, and punched on a metal plate using a metal mold to produce a product. Got

Example 7, Comparative Examples 9 and 10 (powder powder) According to the prescription and manufacturing method in Table 2, a powder screen was prepared.

[0044]

[Table 2]

Manufacturing method The oily component is heated and mixed, slowly added over the premixed powder component, further stirred, then passed through a 60 mesh, and the product is punched into a metal plate using a metal mold. Got

Example 8, Comparative Examples 11 and 12 (lipstick) Lipsticks were prepared according to the formulation and manufacturing method in Table 3.

[0047]

[Table 3]

Manufacturing method After dissolving the oil component at 90 ° C., mixing the powder component, further mixing and pulverizing using a roller, re-dissolving and deaeration, and filling in a mold, After cooling, it was taken out and placed in a container to obtain a product.

Example 9, Comparative Examples 13 and 14 (Powder Eyeshadow (Loose Type)) Powder eyeshadow (loose type) was prepared according to the formulation and manufacturing method shown in Table 4.

[0050]

[Table 4]

Manufacturing method The powder components were mixed by a conventional method and filled in a container.

Example 10 and Comparative Examples 15 to 17 (Powder eyeshadow (pressed type)) Powder eyeshadows (pressed type) were prepared according to the formulation and manufacturing method of Table 5.

[0053]

[Table 5]

Manufacturing method The oily component is heated and mixed, slowly added over the pre-mixed powder component, further stirred, then passed through a 60 mesh, and the product is cast on a metal plate using a metal mold. Got

From the results shown in Tables 1 to 5, the cosmetics of the examples of the present invention have a soft feeling, a smooth application feeling, a high moisturizing feeling, and a uniform finish, as compared with the comparative examples.
It can be seen that the makeup lasts long.

[0056]

As described above, according to the present invention, in the powder coating treatment step with N-acylated lysine, the N-acylated lysine adhesion-like function of the ester oil agent and the growth control of N-acylated lysine crystals are achieved. By effectively utilizing the function of N-acylated lysine simple substance precipitation, it is characterized by having a multi-layered treatment layer consisting of an ester-based oil agent layer and an N-acylated lysine uniform thin film layer. Cohesiveness is reduced, blended with a composite powder that has a soft touch and excellent adhesion, moisture retention and spreadability, and has a soft feel, smooth application feeling and high moisturizing feeling.
It is also clear to provide a cosmetic having excellent finish uniformity and long-lasting makeup.

[Brief description of drawings]

FIG. 1 is an electron micrograph (drawing substitute photograph) of red iron oxide-coated mica titanium of Example 3.

FIG. 2 is an electron micrograph (drawing substitute photograph) of red iron oxide-coated mica titanium of Comparative Example 2.

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI A61K 7/02 A61K 7/02 P 7/025 7/025 7/032 7/032 7/035 7/035 C09B 67/08 C09B 67/08 C (56) Reference JP 2000-7942 (JP, A) JP 5-58842 (JP, A) JP 7-242838 (JP, A) JP 9-31358 (JP, A) JP 9-302261 (JP, A) JP 9-309816 (JP, A) JP 7-69628 (JP, A) JP 2001-72527 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) C09C 3/08 A61K 7/00 A61K 7/02 A61K 7/025 A61K 7/032 A61K 7/035 C09B 67/08

Claims (4)

(57) [Claims] 1. The powder is subjected to an adsorbing coating treatment with an ester-based oil agent and a complexing treatment comprising a subsequent coating treatment with an N-acylated lysine as one repeating unit once or twice or more. A composite powder characterized by being obtained by 2. The composite powder according to claim 1, wherein the ester oil agent is a long-chain acylglutamic acid ester derivative. 3. The composite powder according to claim 2, wherein the N-acylated lysine is N-lauroyl lysine. 4. A cosmetic comprising the composite powder according to claim 1.