JPS62209011A - Cosmetic - Google Patents

Abstract

PURPOSE:To obtain a non-aqueous cosmetic having excellent affinity and adhesivity to skin and improved moisture-retainability, giving durable make-up and effective in preventing chapped skin, by coating an inorganic pigment with a complex composed of a specific water-soluble collagen and a specific anionic polymer and using the coated pigment as a cosmetic component. CONSTITUTION:The surface of an inorganic pigment is coated with (A) a water- soluble collagen having an average molecular weight of 100,000-700,000 or its derivative, e.g. methyl- or ethyl-esterified collagen and (B) an anionic polymer selected from hyaluronic acid, chondroitinsulfuric acid, alginic acid, pectinic acid and carrageenan. The obtained coated pigment having excellent affinity and adhesivity to skin and high water-retainability (moisture-retainability) is added to a non-aqueous cosmetic to obtain the objective cosmetic having various excellent effects such as excellent affinity and adhesivity to skin, durable make-up, maintenance of moist and charming skin, prevention of skin roughening, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides a coating 82 in which the surface of an inorganic pigment is coated with a composite consisting of water-soluble collagen or a derivative thereof and a specific anionic polymer described below. This invention relates to a non-aqueous cosmetic containing a scalp ingredient. More specifically, non-aqueous makeup that has good blending and adhesion to the skin, does not easily remove makeup, maintains moisturized skin, and can provide excellent effects such as preventing skin roughness. Regarding fees.

(Conventional technology) Conventionally, talc, for example, has been used as a pigment for cosmetics.

A wide variety of inorganic pigments are used, such as kaolin, mica, sericite, titanium mica, and titanium oxide, but the polarity of the pigment's surface is far from that of the skin, and the pigment itself does not have the ability to retain moisture. Therefore, cosmetics containing such inorganic pigments (e.g. powder foundation, pressed powder, cheek bene).

Powder eye shadow, face powder, baby powder, etc.) had the disadvantage of poor blending and adhesion to the skin. In addition, the cosmetic has the disadvantage that the skin becomes dry and powder is lifted during the dry seasons of autumn and winter because the cosmetic coating film has no moisture retention ability.

Furthermore, in order to improve the adhesion of inorganic pigments to the skin, it has been conventional practice to incorporate coated pigments in which the surface of inorganic pigments is coated with metallic soap.

However, metallic soap-coated pigments have extremely low oil absorption due to the surface hydrophilicity-lipophilic balance being too biased toward lipophilicity. etc.), the amount of oil-based binder that can be blended is significantly reduced, making it difficult to improve the soft feel and causing problems such as shine (uneven gloss) on the cake surface. In addition, water-based powder foundation powders (incorporating metallic soap-coated pigments improve water contact, but reduce moisture retention and fail to provide a moist, pleasant feel).

(Problems to be Solved by the Invention) The present invention has improved all the drawbacks of the prior art, and the purpose of the invention is to improve the conformability to the skin, the adhesion to the skin,
To provide a non-aqueous cosmetic that has good makeup retention, retains moisture in the skin, and can prevent rough skin.

(Means for Solving the Problems) The above object of the present invention is that the surface of the inorganic pigment has an average molecular weight of 1
A coated pigment coated with a complex consisting of water-soluble collagen or a derivative thereof having a weight of 0,000 to 700,000 and an anionic polymer selected from the group consisting of hyaluronic acid, chondroitin sulfate, alginic acid, pectic acid, and carrageenan. This can be achieved by using a non-aqueous cosmetic containing the following.

The coated pigment used in the present invention is a complex in which the surface of the inorganic pigment constituting the base is composed of water-soluble collagen or a derivative thereof having an average molecular weight of 100,000 to 700,000 and the anionic polymer. The coating is substantially uniform, and the state of the coating is usually substantially uniform.

Examples of inorganic pigments constituting the base of the N pigment include talc, kaolin, mica, sericite, barium sulfate, calcium carbonate, magnesium carbonate, gypsum, aluminum silicate, magnesium silicate, titanium oxide,
Red iron oxide, yellow iron oxide.

Examples include black oxidized iron, navy blue, n-blue, zinc white, iI mother titanium, and the like.

The water-soluble collagen mentioned above is a protein extracted from the skin of calves, calves, and lambs, and contains eight polypebs. It is a highly safe product that exists in the form of spiral bundles, has excellent water retention ability, and has extremely low antigenicity.

Water-soluble collagen is extracted from the animal's skin with a slightly acidic or slightly alkaline aqueous solution, or a neutral salt aqueous solution, or the animal's skin is treated with pepsin under acidic conditions to cleave the molecular bridge. Examples of the water-soluble collagen derivatives obtained by subsequently extracting with an acid aqueous solution include methyl-esterified collagen obtained by methyl-esterifying the carboxyl group of water-soluble collagen, and methyl-esterified collagen obtained by ethyl-esterifying the carboxyl group of water-soluble collagen. I can do it.

As mentioned above, the average molecular weight of the water-soluble collagen or its derivative is 100,000 or more and 700,000 or less.

If the average molecular weight is less than 100,000, the particles tend to aggregate and the adhesion to the skin becomes poor, which is undesirable. Moreover, if the average molecular weight is larger than 700,000, it will not be possible to give a moist and good feel to the skin.

The anionic polymer that forms the complex with water-soluble collagen or its derivatives is hyalinonic acid.

chondroitin sulfate, alginic acid, pectic acid or carrageenan.

In the coated pigment, the amount (adhesion amount) of the complex consisting of water-soluble collagen or its derivative and the anionic polymer, which coats the surface of the inorganic pigment of the base, is 0.0000% based on the weight of the inorganic pigment. 1-10% by weight, preferably 0
．． It is 4 to 5% by weight.

When the amount is less than 0.1% by weight, the above-mentioned effects of the present invention decrease, and 10! When the amount exceeds ffi%, the particles of the N pigment tend to aggregate or solidify, and the spreadability of cosmetics containing it tends to be poor.

The coated pigment described above is produced as follows.

i' [(
Add an aqueous solution of sodium or potassium salts of anionic polymers (excluding hyaluronic acid and chondroitin sulfate) to the collagen aqueous solution with stirring to adjust the pH to 8.0 or more and 6.6 or less. By adjusting, a complex consisting of water-soluble collagen and the anionic polymer is formed and deposited on the surface of the inorganic pigment.

When the anionic polymer is hyaluronic acid or chondroitin sulfate, after adding an aqueous solution of their sodium salt or potassium salt, a water-miscible organic solvent such as ethyl alcohol or acetone is added. promotes and accelerates the deposition of inorganic pigments on the surface.

If the water-soluble collagen derivative is esterified collagen such as methyl-esterified collagen or ethyl-esterified collagen, the pH of the system in which the esterified collagen is dissolved and the inorganic pigment is dispersed is 9.0 or less. It can be produced in the same manner as in the case of the water-soluble collagen above, except that P)I is adjusted to 8.0 or more and 9.0 or less by adding an aqueous solution of an anionic polymer salt. .

The isoelectric points of water-soluble collagen and esterified collagen are about 9.0 and about 11.0, respectively.

These collagens are positively charged in the PH region below their isoelectric point, and form a complex through electrical interaction with the negative charges of the anionic polymer.

This composite is phase-separated from the aqueous phase and simultaneously deposited on the surface of the inorganic pigment, and the particle surface of the inorganic pigment is covered with the composite.

Incidentally, the amount (working pressure) of water-soluble collagen or its derivative and the anionic polymer salt used to form the above-mentioned complex is usually within the range of 1:2 to 2:1 as a weight ratio.

The usage ff1 (amount) of the coated pigment in the cosmetic composition of the present invention is 1 to 100% by weight (in the case of a powdered cosmetic composition).
% by weight is based on the weight of the composition), and in the case of cake-like cosmetics and paste cosmetics, 1! 1-100 based on company! fi%.

In the cosmetic of the present invention, examples of pigments that can be used in combination with the coated pigment include the above-mentioned inorganic pigments and organic pigments.

Other base materials that can be incorporated into the cosmetic of the present invention include oily substances, polyhydric alcohols, sugars, and metal soaps.

Surfactant, silicone oil, ultraviolet absorber, preservative.

Examples include fragrances and the like.

Examples of the oily substance include liquid, pasty or solid hydrocarbons, fats and oils, synthetic triglycerides, higher fatty acids, and higher alcohols.

Examples include synthetic ester oils and waxes.

Incidentally, the coated pigment coated with the complex 1 consisting of water-soluble collagen or its derivative and the anionic polymer used in the present invention may be incorporated into a water-containing cosmetic such as an emulsified foundation 1. 9. The non-aqueous cosmetic of the present invention is a face powder.

Powder cosmetics such as baby powder, aftershave powder, and eye shadow; cake-like cosmetics such as powder foundation, pancakes, eye shadow, and cheek blush; and oil-based fante cosmetics.

Applicable to paste-condensed sugars such as Hohobeni.

(Effect of the present invention (1) The coated pigment used in the present invention has good affinity and adhesion to the skin, and has a high water retention ability (moisturizing property), so the cosmetic of the present invention containing this , has good blending and adhesion to the skin, does not cause makeup to come off easily (, keeps skin moist and moisturized, prevents skin roughness, etc.)
Its uniqueness is remarkable, and its commercial value is extremely high.

(Example) Examples will be described below.

In the examples, parts mean parts by weight, and % means % by weight. The test methods for the sensory test of the powder foundation cover, the pressed powder test, and the oil foundation cover shown in the examples are as follows.

(1) Sensory test of Powder Foundation Powder Foundation W-N was applied with a sponge puff, and immediately after application, the adhesion to the skin was good and it felt moisturized! Evaluate the touch,
After 4 hours of application, the durability of the moist feel and the makeup's wearability were evaluated. The test was conducted for one week by a panel of 20 women.

The evaluation scores for each test item were 5 points for good, 4 points for fair, 8 points for fair, 2 points for fair, and 1 point for poor, and the average score of the 20 people was calculated and displayed.

(2) Powder foundation shoulder skin roughness prevention ability test Powder foundation A and B were tested for long-term use for 20 days from December to mid-December. There were 20 panelists using A, and 20 panelists using B, both of whom had dry skin that is prone to rough skin. To apply the same conditions, I used a base cream and then applied powder foundation with a sponge.

After 20 days, 5 points were given for preventing rough skin, 8 points were given for somewhat preventing rough skin, and 1 point were given for not preventing rough skin, and the average score of the 20 people was calculated and displayed.

(3) Sensory test of pressed powder After applying the emulsified foundation powder to the entire face, apply the pressed powder with a parallax, and evaluate the adhesion to the skin, finishing effect, and moist feel (immediately after application). Four hours after application, the durability of the moist feel and the makeup's wearability were evaluated.

Other evaluation methods are the same as in the sensory test for powder foundation bags.

(4) Sensory test for oil-based foundation The test was carried out in the same manner as the sensory test for powder foundation, except that an oil-based foundation was used instead of the powder foundation.

Example 1 (1) Production of coated pigment 1000 parts of a 1% aqueous solution of water-soluble collagen with an average molecular weight of 1.8 million was added to a dispersion in which too many parts of sericite were uniformly dispersed in 5000 parts of purified water, and the mixture was stirred. 109
Adjust the pH to 8.0 with an aqueous solution of 6-acetic acid. Thereafter, high molecular weight sodium hyaluronate (average molecular fi
1,000 parts of a 1% aqueous solution of lN71-
, an aqueous sodium filtrate solution is added to adjust the pH to 4.0, and then 4000 parts of ethanol is added to deposit a complex consisting of collagen B and hyaluronic acid on the surface of the pigment (sericite). Next, centrifugally filter this suspense seal,
After washing with water, washing with ethanol, drying under reduced pressure at room temperature, and pulverizing with a flow aJWE xer, the surface of sericite is formed into a complex consisting of the collagen and hyaluronic acid described above (hereinafter referred to as complex A). coated pigment (complex A)
A fine powder of 1.8% (hereinafter referred to as sericite coated on the composite) was obtained.

In addition, the same procedure as described above was carried out except that talc and titanium oxide were used instead of sericite. The M content of Body A was 1.8%).

(2) Preparation of Howder Foundation Pack In a fluidized mixer, 64.7 parts of the complex Aaff sericite obtained in (1) above, 5 parts of complex A'a-covered talc, and 2 parts of complex A-covered vlrt. Add 16 parts of titanium chloride, 1 part of red iron oxide, 8 parts of yellow iron oxide, and 0.8 part of black iron oxide, and mix for 10 minutes with stirring. A mixture (70° C.) consisting of appropriate parts was added slowly, followed by continued stirring for 10 minutes. Next, this was taken out, crushed, passed through a 40-mesh sieve, and press-filled into metal to obtain a product.

The obtained powder foundation of the present invention was subjected to a sensory test as described above.

The powder foundation according to the present invention can provide a good feel and effect without using a base cream. In other words, the evaluation score is 4.9 for adhesion to the skin 11.
4.8 points for the moist feel.

The lasting moist feel was 4.7 points, and the long-lasting makeup was 4.6 points.

In addition, the skin roughness prevention ability test result was 5.0 points, with no one recognizing some to no skin roughness.

As is clear from this result, powder foundation W
In terms of performance, Comparative Example 1 below. It is superior to Comparative Example 2, and the specificity of the action and effect of the cosmetic of the present invention is remarkable.

Comparative example 1 Complex A'gt@sericite, complex A coated talc.

A comparative powder foundation was prepared in the same manner as in (2) of Example 1, except that untreated (normal) sericite, talc, and titanium oxide were used instead of the composite A-coated titanium oxide. Prepared. As a result of a sensory test of the obtained foundation bag, the evaluation scores were 2.8 points for adhesion to the skin, 2.9 points for moist feel, and 8.1 points for durability of moist feel. The score was 862 points for how long the makeup lasted. The score in the skin roughness prevention ability test was 8.1 points.

Comparative Example 2 68.4 parts of sericite, 4.9 parts of talc, and 14 parts of titanium oxide instead of 64.7 parts of composite A-coated sericite, 6 parts of composite A-coated talc, and 15 parts of composite A-coated titanium oxide. ．．
(2) of Example 1 except that 7 parts, 0.85 parts of the collagen powder, and 0.85 parts of sodium hyaluronate were used.
A comparative powder foundation was prepared in the same manner as above. As a result of performing the sensory test on this powder foundation as described above, the evaluation scores were 2.8 points for adhesion to the skin, 8.0 points for moist feel, and 2 points for durability of moist feel. .8 points, 2 points for good makeup retention.
It was 9 points.

The skin roughness prevention ability test result was 8.4 points.

Example 2 (1) Production of coated pigment To a dispersion of 1000 parts of mica uniformly dispersed in 6000 parts of purified water, 2600 parts of a 1% aqueous solution of methyl esterified collagen with an average molecular weight of 800,000 is added and stirred. . Then a 1% aqueous solution of sodium chondroitin sulfate 160
0 parts were added. The pH was 6.5.

Then add 4000 parts of ethanol. In this way, a complex consisting of methylesterified collagen and chondroitin sulfate is deposited on the surface of the pigment (mica). Thereafter, filtration was carried out in the same manner as in Q) of Example 1.

After washing with water, washing with ethanol, drying, and grinding, a complex consisting of methylesterified collagen and chondroitin sulfate (
A fine powder of a coated pigment (hereinafter referred to as composite B) (adhesion of composite B: 8.8%) (hereinafter referred to as composite B coated mica) was obtained. The procedure was carried out in the same manner as above except that titanium oxide and kaolin were used instead of mica. The adhesion amount is 8.9%
) was obtained.

(2) Preparation of pressed powder Composite B obtained in above (1), 66 parts of LLI-covered maggo mica, 8 parts of composite B-covered titanium oxide, 9288 parts of Bi-covered cacao, 0.7 part of red iron oxide, and yellow oxide. After 1.6 parts of iron was placed in a mixer and mixed by stirring for 10 minutes, a mixture of 926 parts of stuff and an appropriate amount of perfume was added thereto, followed by stirring and mixing for 10 minutes. This mixture is then removed, ground, and press-filled into whole blood to form a product.

The obtained pressed powder of the present invention was subjected to a sensory test as described above, and the evaluation points were 4.8 points for skin adhesion and 4.5 points for finishing effect.

It received 4.7 points for the moist feel, 4.6 points for the durability of the moist feel, and 4.6 points for the longevity of the makeup.

Ta. As described above, the performance of the pressed powder of the present invention is superior to Comparative Example 8 described later, and the effect of the composite B coated pigment,
The specificity of the effect is remarkable.

Comparative example 8 Composite B coated mica, Composite B coated titanium oxide.

Example 2 except that untreated (normal) mica, @ titanium oxide, and kaolin were used instead of composite 1111 kaolin.
A comparative pressed powder was prepared in the same manner as in (2).

The obtained pressed powder was subjected to a sensory test as described above, and the evaluation scores were 8.1 points for adhesion to the skin, 8.0 points for finishing effect, and 2.7 points for moist feel.
The durability of the moisturized feel was 8.1 points, and the longevity of the makeup was 2.9 points.

Example 8 (1) Production of target pigment 1% of water-soluble collagen with a molecular weight of 600,000 was added to a dispersion in which 1,000 parts of titanium was uniformly dispersed in 5,000 parts of purified water.
Add 500 parts of aqueous solution and add 6% citric acid with stirring,
Adjust pH to 8.5.

Next, after adding 1000 parts of a 1% aqueous solution of sodium alginate, the pH was adjusted to 4.0 with an IN aqueous sodium hydroxide solution.
5, a complex consisting of water-soluble collagen and alginic acid is deposited on the surface of titanium mica. Thereafter, in the same manner as in Example 1 (1), a water-soluble collagen-alginic acid complex (hereinafter referred to as complex C) was prepared by passing, washing, drying, and pulverizing.
The adhesion amount of mica titanium (complex C) is 1.5
%) of fine powder was obtained.

The procedure was repeated in the same manner as above except that mica and talc were used instead of titanium mica. The amount was 1.5%).

(2) Preparation of powder eyeshadow 80 parts of the composite C-coated mica titanium obtained above and 86 parts of the composite C-coated mica.
6 parts of Complex C-coated talc, 10 parts of Dark Blue R, and 2 parts of black iron oxide were placed in a mixer and mixed for 10 minutes. Add the mixture and mix evenly. Next, this mixture is taken out, passed through a 40-mesh sieve, and press-filled into a mold to form a product.

A practical test of the obtained powder eyeshadow of the present invention was carried out by 8 specialized inspectors, and the results showed that it had good adhesion to the skin, applied makeup well, and gave a good moist feel without powdery feeling. .

Example 4 (1) Production of coated pigment To a dispersion of 1000 parts of sericite uniformly dispersed in 5000 parts of purified water, 50 parts of a 1% aqueous solution of ethyl esterified collagen with an average molecular weight of 2.8 million was added and stirred. 50 parts of a 1% aqueous solution of carrageenan was added to the bottom, and a 5% aqueous sodium acetate solution was added to adjust the PI (PI) to 8.0. A fine powder of sericite (1.0% composite) coated with a composite consisting of ethyl esterified collagen and carrageenan (hereinafter referred to as composite) is obtained.

The procedure was carried out in the same manner as above except that talc and mica titanium were used instead of sericite.
A composite adhesion of 311.0% was obtained.

(2) Preparation of sericite complex coated sericite obtained in (1) above 46.5
20 parts of talc, 6 parts of red iron, and 2 parts of red for the composite coating.
A mixture of 1 part of No. 26 and 1 part of No. 26 was added to a shaker and stirred for 15 minutes. A homogeneous molten mixture consisting of 2.5 parts of petrolatum, 5 parts of liquid paraffin, an appropriate amount of fragrance, and an appropriate amount of preservative was gradually added to this homogeneous mixture, and after stirring for 10 minutes, the mixture was taken out and The product is passed through a mesh sieve and press-filled into a mold.

A practical test of the obtained cheek red of the present invention was carried out by eight specialized inspectors, and the results showed that it was compatible with the skin.

It had good adhesion, finishing effect, and makeup retention, and gave a good, moist feel to the skin.

Example 6 (1) Production of coated pigment y! 1000 parts of talc is uniformly dispersed in a mixed solution consisting of 4000 parts of ice and 1000 parts of ethanol.

25 parts of a 1% aqueous solution of water-soluble collagen with an average molecular weight of 150,000 and 25 parts of a 1% aqueous solution of pectic acid (sodium form) were added to this dispersion under stirring, and the pH was adjusted to 5 by adding 10% malic acid. It was adjusted to .0. Thereafter, talc coated with a collagen-pectic acid complex (referred to as complex E) was obtained by filtration, washing, drying, and pulverization in the same manner as in Example 1 (1) (the adhesion amount of complex E was 0.6%). In addition, the same procedure as above was carried out except that sericite and titanium oxide were used instead of talc, and the composite E [it sericite (adhesion 2 of composite E was 0
．． 5%) and composite E-coated titanium oxide (*i of composite E is 0.5%).

(2) Preparation of oil-based foundation 15 parts of talc coated with the complex E obtained in the above (1), 12.5 parts of titanium oxide coated with the complex E, 18 parts of sericite coated with the complex E, and 0.4 parts of red iron oxide. A homogeneous mixture of 1.5 parts of yellow iron oxide and 0.1 part of black iron oxide was heated to 28.5 parts of liquid paraffin.
5 parts of isopropyl myristate, 16 parts of isopropyl myristate, 7 parts of osikelite, and 7 parts of microcrystalline wax (80"C), mixed in a roll mill, melted again, defoamed, and an appropriate amount of fragrance. After adding 50%, pour it into a container and leave it to cool to make a product.

The obtained oil-based foundation was subjected to a sensory test as described above, and its evaluation score was 4.0 for adhesion to the skin.
7 points, finishing effect 4 degrees, 8 points, moist feel 4 points
．． The product received 7 points, 4.8 points for lasting moist feel, and 4.6 points for long-lasting makeup.

As described above, the specificity of the effects of the cosmetic composition of the present invention is remarkable.

Example 6 (1) Production of coated pigment Methyl esterified collagen was prepared in the same manner as in Example 2 (1) except that sodium hyaluronate of low molecular weight (molecular weight @ 80,000) was used instead of sodium chondroitin sulfate. Mica coated with a hyaluronic acid complex (hereinafter referred to as "complex F") (the adhesion amount of complex F was 8.9%) was obtained.

Composite F-coated talc (composite F-coated,
! ! ? Amount of 4.0%) and composite F coated titanium oxide (8.9% of adhesion of composite F!!) were obtained.

(2) Preparation of face powder 25 parts of composite F-covered mica obtained in the above (1), 71 parts of composite F11-covered talc, 8 parts of composite Fa-covered titanium oxide, 0.5 part of red iron oxide, and 0 yellow iron oxide. After putting .5 parts into a mixer and stirring and mixing for 10 minutes, an appropriate amount of the fragrance was added to this homogeneous mixture, and the mixture was stirred and mixed for 5 minutes. Next, this mixture was taken out and passed through an 80-mesh sieve and filled into containers to obtain a product.

The obtained face powder of the present invention was subjected to a practical test by eight expert examiners, and as a result, it was found to have good blending to the skin, adhesion, finishing effect, and makeup retention, and gave a moist and good feel to the skin.

Example 7 (1) Production of coated pigment) Coated mica (the amount of composite G deposited was 1.8%) was obtained.

The procedure was repeated in the same manner as above except that talc and titanium oxide were used instead of mica. An adhesion amount of 2.0%) was obtained.

(2) Face powder? 26 parts of composite G-coated mica obtained in the above (1), 71 parts of composite G-coated talc, 8 parts of composite G-coated titanium oxide, and 0.5 parts of red iron oxide.
After adding 0.5 parts of yellow iron oxide to a mixer and stirring and mixing for 10 minutes, an appropriate amount of the fragrance was added to this homogeneous mixture and stirring and mixing for 5 minutes. Next, this mixture was taken out and passed through an 8° mesh sieve and filled into containers to obtain a product.

The obtained face powder of the present invention was subjected to practical tests by eight specialized examiners, and as a result, it was found to have good blending to the skin, adhesion, finish effect, and makeup retention, and gave a good moist feel to the skin.

〆-, Patent applicant: Kanebo Co., Ltd. 1 issue/15. )
, 2′2・′

Claims (2)

[Claims] (1) The surface of the inorganic pigment contains water-soluble collagen or its derivatives with an average molecular weight of 100,000 to 700,000, hyaluronic acid, chondroitin sulfate, alginic acid, pectic acid,
A non-aqueous cosmetic containing a coated pigment coated with a complex consisting of an anionic polymer selected from the group consisting of carrageenan. (2) The non-aqueous cosmetic according to claim (1), wherein the water-soluble collagen derivative is methyl-esterified collagen or ethyl-esterified collagen.