JPS61282307A - Cosmetic - Google Patents

Abstract

PURPOSE:To provide a non-aqueous cosmetic containing an inorganic pigment coated with a water-soluble collagen (derivative) having an average molecular weight falling within a specific range, having excellent fittability and adhesivity to the skin and giving durable make-up and pleasant moist feeling to the skin. CONSTITUTION:The objective non-aqueous cosmetic contains an inorganic pigment coated with a water-soluble collagen or its derivative having an average molecular weight of 100,000-700,000 (e.g. succinylated collagen, methyl-esterified collagen, ethylesterified collagen, etc.). Since the coated pigment has high affinity to the skin and water-retainability, it is effective to maintain moistened skin. The water-soluble collagen is a protein extracted from the skin of calf, pigling, lamb, etc. The coated pigment can be produced by dispersing an inorganic pigment in an aqueous solution of the collagen, dehydrating and drying the obtained slurry under reduced pressure and pulverizing the dried product.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a non-aqueous cosmetic containing a coated pigment in which the surface of an inorganic pigment is coated with water-soluble collagen or a derivative thereof described below. be. For more details,
Familiarity (affinity) with the skin (skin), adhesion, makeup retention (
The present invention relates to non-aqueous cosmetics that have good cosmetic stability and can provide a moist and pleasant feel to the skin.

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

Various inorganic pigments are used, such as kaolin, mica, sericite, titanium mica, and titanium oxide, but the polarity of the pigment surface is far from that of the skin surface, and the pigment itself does not have the ability to retain moisture. 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 the powder tends to float during the dry seasons of autumn and winter, since the cosmetic coating film does not have a water retention ability.

Furthermore, in order to improve the 7mM property of inorganic pigments on the skin, it has been conventionally practiced to blend coated pigments in which the surface of inorganic pigments is coated with metal soap.

However, metallic soap-coated pigments have extremely low oil absorption due to the surface hydrophilicity-lipophilic balance being too biased towards 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. Furthermore, when a metal soap-coated pigment is added to a water-based powder foundation soap, the water repellency improves, but the water retention ability decreases, making it impossible to provide a moist and pleasant feel.

(Problems to be Solved by the Invention) The present invention is an improvement on the conventional technology, and the purpose of the invention is to improve the fit to the skin, the adhesion,
To provide a non-aqueous cosmetic that has good makeup retention and gives a moist and good feel to the skin.

(Means for Solving the Problems) The purpose of the present invention is to solve the problem that the surface of the inorganic pigment has an average molecular weight! 10
This can be achieved by using a non-aqueous cosmetic containing a coated pigment coated with 700,000 or less water-soluble collagen or a derivative thereof.

In the coated pigment used in the present invention, the particle surface of the inorganic pigment constituting the base is substantially covered with a film of water-soluble collagen or a derivative thereof having an average molecular weight of 100,000 to 700,000. The coating is usually substantially uniform.

The above-mentioned water-soluble collagen is a protein extracted from the skin of calves, piglets, and lambs. It is a highly safe product with extremely low

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 after the animal's skin is treated with pepsin under acidic conditions to cleave molecular crosslinks. , obtained by extraction with an aqueous acid solution.

Examples of the above-mentioned water-soluble collagen derivatives include succinylated collagen obtained by reacting succinic acid with the 7-mino group of water-soluble collagen, methyl esterified collagen obtained by methyl esterifying the carboxyl group of water-soluble collagen, and ether ester. Examples include ethyl esterified kolaken.

Of water-soluble collagen or its derivatives that coat the surface of the inorganic pigment of the base! (Amount of adhesion) is 0.1 to 10% by weight, preferably 0.4 to 5% by weight based on the weight of the inorganic pigment.
Weight%. If it is less than 0.1% by weight, the effect of the present invention will be reduced, and if it is more than tOW%, the particles of the coated pigment will tend to aggregate or solidify, and the spread of the cosmetic containing it will be poor. Prone.

As mentioned above, the average molecular weight of the water-soluble collagen or its derivative is from 100,000 to 0,000.

If the average molecular weight is less than 100,000, the particles of the coated pigment tend to aggregate, resulting in poor adhesion to the skin, which is not preferred. 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.

Inorganic pigments constituting the base of the coated pigment include, for example, 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 iron oxide, deep blue 9 ultramarine blue, zinc white, titanium mica, and the like.

The particle size of the coated pigment used in the present invention is usually 0.1 to 10
It is within the range of 0μ.

The coated pigment used in the present invention can be produced by any of the following methods.

(1) A slurry in which an inorganic pigment is dispersed in an aqueous solution of water-soluble collagen or its derivative is dehydrated and dried under reduced pressure and pulverized.

(2) Pff of a slurry in which an inorganic pigment is dispersed in an aqueous solution of water-soluble collagen or its derivative is adjusted to around the isoelectric point of water-soluble collagen or its derivative with acid or alkali, and the resulting IjI pigment is uniformly Wash, rinse,
dry.

(3) A slurry of pigment dispersed in an aqueous solution of succinylated collagen is uniformly mixed with an aqueous solution of methyl esterified collagen or ethyl esterified collagen, and the resulting coated pigment is filtered, washed with water, dried, and pulverized. .

Amount of coated pigment used in the cosmetic of the present invention (formulation jl)
is 1 to 100% by weight for powdered cosmetics (weight% is based on the weight of the composition), and for cake-like cosmetics and paste cosmetics, it is 1% by weight based on the weight of the gold powder to be blended. ~100% by weight.

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 cosmetics of the present invention include oily substances, polyhydric alcohols, sugars, and metal soaps.

Kaiga activator, silicone oil, ultraviolet absorber, preservative.

Examples include fragrances and the like.

Examples of the oily substances include liquid, pasty, or solid hydrocarbons, oil-free synthetic triglycerides, higher fatty acids, higher alcohols/synthetic ester oils, waxes, and the like.

Incidentally, the coated pigment coated with water-soluble collagen or its derivative used in the present invention can also be blended into a water-containing cosmetic composition such as an emulsified foundation.

The non-aqueous cosmetic of the present invention is a face powder.

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

Applicable to paste-condensed sugars such as Hohobeni.

(Effects 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 It has remarkable unique properties, such as good blending and adhesion to the skin, does not easily remove makeup, and can maintain moisturized skin, and has extremely high commercial value.

(Example) Example 1ζ will be described below.

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

(1) Sensory test of Powder Foundation 1 After applying the base cream to the entire face, apply Powder Foundation Temporary with a facial puff. Evaluate the feel and apply 4
After a period of time, the durability of the moisturized feel and the makeup's long-lasting properties were evaluated. The test was conducted for one week by a panel of 20 women. The evaluation score is 5 points for each test item,
4 points for somewhat good.

The average score of 20 people was calculated and displayed by adding up 8 points for average, 2 points for slightly poor, and 1 point for poor.

(2) Sensory test of pressed powder After applying emulsified foundation 1 to the entire face, apply pressed powder with a puff. Immediately after application, evaluate the adhesion to the skin, treatment effect, and moist feel. 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 Para Darts.

(3) Sensory test for oil-based foundation 1 The sensory test for powder foundation 1 was conducted in the same manner as in the case of the sensory test for powder foundation 1, except that no base cream was used and oil-based foundation serum was used instead of powder foundation sheen.

Example 1 (1) Production of coated pigment 2000 parts of a 1% aqueous solution of water-soluble collagen with an average molecular weight of 800,000 (hereinafter referred to as collagen B) was added to a dispersion in which too many parts of sericite were uniformly dispersed in 5000 parts of purified water. was added, and the pg was adjusted to 8.5 with 10% acetic acid aqueous solution under stirring.
Ir-adjust. Thereafter, an IN-sodium hydroxide aqueous solution is added under stirring to adjust the pH to 8.0, and collagen B is deposited on the surface of the pigment (sericite). Next, this suspense solution is centrifugally filtered, washed with water, washed with ethanol, dried under reduced pressure at room temperature, and crushed with a fluidized mixer to form a coated pigment in which the surface of sericite is coated with the collagen B described above. (The amount of collagen B attached is 1.8%) (
A fine powder of collagen-coated sericite (hereinafter referred to as sericite) was obtained.

In addition, the same procedure as described above was carried out except that talc and titanium oxide were used instead of sericite. Mji with 1.
8%).

(2) Para darts 1 in 1! In an Ig fluidized mixer, 64.7 parts of collagen-coated sericite obtained in (1) above, 6 parts of collagen B-coated talc, 15 parts of collagen B-coated titanium oxide, and 1 part of red iron oxide were added. Add 8 parts of yellow iron oxide and 0.3 parts of black iron oxide,
After stirring for 0 minutes, a mixture (70° C.) consisting of 28 parts of soufflé, 8 parts of vaseline, and an appropriate amount of perfume was gradually added thereto, followed by continued stirring for 10 minutes. Next, take it out, crush it, and pass it through a 40 mesh sieve.
A product was obtained by press filling into metal.

As a result of conducting a sensory test as described above for the obtained para darts of the present invention, the evaluation scores were 4.9 points for adhesion to the skin, 4.7 points for moist feel, and 4.7 points for moist feel. 4.8 points for sustainability.

The makeup lasted 4.8 points. As is clear from these results, in terms of powder foundation performance, Comparative Example 1 below. This is superior to Comparative Example 2, and the specificity of the action and effect of the water-soluble collagen-coated pigment is remarkable.

Comparative Example 1 Untreated (normal) sericite and talc instead of collagen B-coated sericite, collagen B-coated talc, and collagen B-coated titanium oxide.

Comparative paradarts were prepared in the same manner as in Example 1 (2) except that titanium oxide was used. As a result of a sensory test of the obtained foundation silon, the evaluation score was 8.0 points for adhesion to the skin, 8.1 points for moist feel, and 2 points for durability of moist feel.
．． The score was 6 points, and the good makeup retention score was 8.0 points.

Comparative Example 2 Collagen B-coated sericite 64.7 parts, collagen B-coated talc 5 parts, collagen B-coated titanium oxide 1
Instead of 5 parts, use 68.4 parts of Sericite.

A comparative powder foundation silane was prepared in the same manner as in Example 1 (2) except that 4.9 parts of talc, 14.7 parts of titanium oxide, and 1.7 parts of the collagen B powder were used. As a result of conducting the sensory test of this Para Dart 1, as described above, the evaluation scores were 8.1 points for adhesion to the skin, 8.2 points for moist feel, and 2 points for durability of moist feel. .8 points, makeup lasts 8.1
It was a point.

Example 2 (1) Production of coated pigment 600 parts of a 1% aqueous solution of water-soluble collagen having an average molecular weight of 150,000 (hereinafter referred to as collagen A) and 1000 parts of mica are placed in a mixer and stirred to mix uniformly. The resulting mixture was placed in a kneader and stirred under reduced pressure, dehydrated and dried, and pulverized to obtain collagen A-coated mica (coated amount of collagen: 0.5%). Also, instead of mica,
The same procedure as above was carried out except that titanium oxide and kaolin were used. Collagen-coated titanium oxide (the amount of collagen attached was 0.6%) and collagen^-coated kaolin (the amount of collagen attached was 0.5%). %) was obtained.

(2) Preparation of pressed powder Collagen Mu-coated mica obtained in (1) above 56.
8 parts of Collagen A-coated titanium oxide, 88 parts of Collagen Mu-coated kaolin, 0.7 parts of red iron oxide, and 1.5 parts of yellow iron oxide were placed in a mixer and stirred for 10 minutes. A mixture of 25 parts and appropriate parts of perfume was added and mixed by subsequent stirring for 10 minutes. This mixture is then taken out, crushed, and press-filled into metal 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 4.9 points for skin adhesion and 4.6 points for finishing effect.

The moist feel was 4.8 points, the durability of the moist feel was 4.9 points, and the makeup lasted 4.7 points. As described above, the performance of the pressed powder of the present invention is superior to that of Comparative Example 8 described later, and the action and effect of the water-soluble collagen-coated pigment are highly specific.

Comparative Example 8 In place of collagen A-coated mica, collagen A-coated titanium oxide, and collagen A-coated kaolin, untreated (
A pressed powder for comparison was prepared in the same manner as in (2) of Example 2, except that mica, titanium oxide, and kaolin (common) were used.

The obtained pressed powder was subjected to a sensory test as described above, and the evaluation points were 8.0 points for adhesion to the skin, 8.1 points for finishing effect, and 2.8 points for moist feel.
The durability of the moisturized feel was 2.7 points, and the long-lasting makeup was 2.8 points.

Comparative Example 4 (1) Production of coated pigment Instead of water-soluble collagen with an average molecular weight of 150,000, water-soluble collagen with an average molecular weight of 10,000 (hereinafter referred to as collagen D) was used instead of water-soluble collagen with an average molecular weight of 150,000.
ζ is the same as in Example 2 (1) except that
Collagen Two-coated mica (adhered amount of Collagen D is 0.5%), Collagen Two-coated titanium oxide (Collagen Co-coated titanium oxide)
The amount of attached collagen D was 0.5%), and the collagen coated kaolin (the amount of attached collagen D was 0.5%) was obtained.

(2) Preparation of pressed powder Instead of Kolaken A-ff-treated mica, Collagen A-coated titanium oxide, and Collagen A-coated kaolin, the above (
A comparative pressed powder was prepared in the same manner as in (2) of Example 2, except that the collagen two-coated mica, collagen two-coated titanium oxide, and collagen two-coated kaolin obtained in step 1) were used.

As a result of the sensory test of the obtained pressed powder as described above, its performance was 2.8 points for adhesion to the skin,
Finishing effect is 8.0 points, moist Is shoulder is 8.8 points
The durability of the moisturized feel was 8.2 points, and the longevity of the makeup was 8.1 points.

Example 8 (1) Production of coated pigment 1000 parts of talc is uniformly dispersed in a liquid mixture consisting of 4000 parts of purified water and 1000 parts of ethanol. 2000 parts of a 1% aqueous solution of succinylated collagen (average molecular weight 800,000) was added to this dispersion while stirring,
After stirring for 1 minute, 2000 parts of a 1% aqueous solution of methylesterified collagen (average molecular weight 800,000) was gradually added under stirring ff, and stirring was continued for 20 minutes. The bodies were deposited on the surface of the talc. This slurry is centrifugally filtered, washed with water, washed with ethanol, and then dried under reduced pressure at room temperature, so that the surface of the talc (pigment) is coated with a complex (composite collagen) consisting of succinylated collagen and methylesterified collagen. A fine powder of a coated pigment (hereinafter referred to as composite collagen-coated talc) (composite collagen coating amount: 8.8%) was obtained. Also, instead of talc,
The same procedure as above was carried out except for using sericite and titanium oxide. %) was obtained.

(2) Preparation of oil-based foundation silane Composite collagen-coated talc 16 obtained in (1) above
A homogeneous mixture of 12.5 parts of composite collagen-coated titanium oxide, 18 parts of composite collagen-coated sericite, 0.4 parts of red iron oxide, 1.5 parts of yellow iron oxide, and 0.1 part of black iron oxide was fluidized. Added to a molten mixture (80°C) consisting of 28.6 parts of paraffin, 15 parts of isopropyl myristate, 7 parts of osikelite, and 7 parts of microcrystalline wax, mixed with a roll mill, melted again, defoamed, After adding an appropriate amount of fragrance, pour into a container and leave to cool to form a product.

The obtained oil-based foundation of the present invention was subjected to a sensory test as described above, and the evaluation points were 4.9 points for adhesion to the skin and 4.8 points for finish effect.

It scored 4.9 points for moist feel, 5.0 points for durability of moist feel, and 4.9 points for good make-up retention, and its performance was superior to that of the oil-based foundation pack of Comparative Example 5 described later. Ta.

Comparative Example 5 Instead of composite collagen-coated talc, composite collagen-coated titanium oxide, composite collagen-coated sericite,
A comparative oil-based foundation was prepared in the same manner as in Example 8 (2), except that untreated (normal) talc, titanium oxide, and sericite were used.

The resulting oil-based foundation was subjected to a sensory test as described above, and the evaluation score was 8.0 for adhesion to the skin.
2 points, finishing effect 8.1 points, moist feel 2 points
．． 7 points, 2.6 points for lasting moist feel, and 8.2 points for long lasting makeup.

Example 4 (1) Production of coated pigment 8,000 parts of a 1% aqueous solution of succinylated collagen (average molecular weight: MAO 1,000) was added to a dispersion of 1,000 parts of titanium mica uniformly dispersed in 5,000 parts of purified water while stirring. After that, IN-! Add J-ngolic acid aqueous solution to adjust the pH to 4.5.
succinylated collagen is deposited on the surface of the pigment (mica titanium). This suspension was centrifugally filtered, washed with ethanol, dried under reduced pressure at 85°C, and crushed with a fluidized mixer to form a coated pigment in which the surface of mica titanium was coated with succinylated collagen (succinylated collagen adhesion amount). (2.8%) (hereinafter referred to as succinylated collagen-coated mica titanium) was obtained. In addition, the same procedure as above was carried out except that mica and talc were used instead of titanium mica. The amount of collagen attached is 2.7%)
I got it.

(2) Preparation of powder eyeshadow Succinylated collagen-coated mica titanium 30 obtained in (1) above
86.5 parts of succinylated collagen-coated mica, 16 parts of succinylated collagen-coated talc, 10 parts of navy blue, and 2 parts of black iron oxide were placed in a mixer and mixed for 10 minutes. Add a mixture of 7.5 parts and appropriate parts of fragrance and mix uniformly.

Next, this mixture is taken out, passed through a 40-mesh sieve, and press-filled into metal to form a product.

Practical tests of the obtained powder eyeshadow of the present invention were conducted by 8 expert examiners, and the results showed that it had good adhesion to the skin, good makeup retention, and a good moist feel without powdery feeling.

Example 5 (1) Production of coated pigment 1,600 parts of a 1% aqueous solution of methylesterified collagen (average molecular weight aO 0,000) was added to a dispersion of 1,000 parts of sericite uniformly dispersed in 5,000 parts of purified water while stirring. After the addition, an IN-ammonia aqueous solution is added thereto to adjust the pH to 10.6, and the methyl esterified collagen is deposited on the surface of the pigment (sericite). This suspension was centrifugally filtered, washed with ethanol, and heated to 85°C.
A coated pigment in which the surface of sericite is coated with methyl esterified collagen (coated amount of methyl esterified collagen 1.5%) is dried under reduced pressure in
(hereinafter referred to as methyl esterified collagen-coated sericite) powder was obtained. Also, the same procedure as above was carried out except that talc and titanium mica were used instead of sericite.
Methyl esterified collagen-coated talc (methyl esterified collagen coating amount: 1.4%) and methyl esterified collagen-coated mica titanium (methyl esterified collagen coated M amount: 1.5%) were obtained.

(2) Preparation of sericite obtained in the above (1): 46.5 parts of methylesterified collagen-coated sericite, 20 parts of methylesterified collagen-coated talc, 20 parts of methylesterified collagen-coated titanium mica, and red iron. A mixture of 5 parts and 1 part of Red 226 was placed in the main mixer and stirred for 15 minutes. A homogeneous molten mixture consisting of 2.6 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 stirred for 1.10 minutes.
This is taken out, passed through a 60-mesh sieve, and press-filled into metal to form a product.

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 Instead of 2000 parts of a 1% aqueous solution of collagen B, 1000 parts of a 1% aqueous solution of a water-soluble collagen (hereinafter referred to as collagen C) with an average molecular weight of [700,000] was used, and The procedure was carried out in the same manner as in Example 1 (1) except that talc was used instead of sericite, and a coated pigment was prepared in which the surface of talc was coated with collagen C (the amount of collagen C adhered was 1%) (hereinafter referred to as A fine powder of collagen C-coated talc was obtained.

In addition, the same procedure as described above was carried out except that mica and titanium oxide were used instead of talc. .97%) was obtained.

(2) Preparation of face powder 11 parts of collagen C-coated talc obtained in the above (1), 25 parts of collagen C-coated mica, 8 parts of collagen C-coated titanium oxide, 0.5 part of red iron oxide, and 0 parts of yellow iron oxide. .5
1 part were put in a mixer and stirred and mixed for 10 minutes, and then an appropriate amount of fragrance was added to this homogeneous mixture and 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 The same procedure as in Example 5 (1) was carried out except that ethyl esterified collagen (average molecular weight 800,000) was used instead of methyl esterified collagen. A fine powder of a coated pigment (coated amount of ethyl esterified collagen: 1.7%) whose surface was coated with ethyl esterified collagen (hereinafter referred to as ethyl esterified collagen-coated sericite) was obtained. In addition, the same procedure was carried out except that talc and titanium mica were used instead of sericite, and ethyl esterified collagen-coated talc (coated amount of ethyl esterified collagen 1.6%) and ethyl esterified collagen-coated talc were used.
Coated mica titanium (ethyl esterified collagen attached 11
1.7%).

(2) Preparation of red cheeks Using ethyl esterified collagen-coated pigment in place of methyl esterified collagen-coated pigment, and using ethyl esterified collagen-coated talc in place of methyl esterified collagen-coated talc. , Example 6 except that ethyl esterified collagen-coated mica titanium was used instead of methyl esterified collagen-coated mica titanium.
The same procedure as in (2) was carried out to prepare the red bean paste of the present invention.

A practical test of the obtained cheek red was carried out by 8 professional testers, and the results showed that it was compatible with the skin and had good adhesion.

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

Example 8 90 parts of collagen C-coated talc obtained in Example 1 (1) and 10 parts of collagen C-coated sericite were placed in a mixer and stirred and mixed for 5 minutes, followed by an ethanol solution containing an appropriate amount of preservative. Add and stir and mix for 5 minutes. After that, it is taken out and filled into a container to make a product.

As a result of testing the obtained baby powder of the present invention, it was found to have good sweat absorption, good adhesion to the skin, and good moist and light feel.

Claims (2)

[Claims] (1) A non-aqueous cosmetic containing a coated pigment in which the surface of an inorganic pigment is coated with water-soluble collagen or a derivative thereof having an average molecular weight of 100,000 to 700,000. (2) The non-aqueous cosmetic according to claim (1), wherein the water-soluble collagen derivative is succinylated collagen, methylesterified collagen, or ethylesterified collagen.