JP2003146841A - Pigment for cosmetic use and method for producing the same and cosmetic containing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pigment for cosmetic use having hygroscopic and moisturizing effects and good dispersibility in an aqueous medium, to provide a method for producing the same, and to provide a cosmetic having good hygroscopic and moisturizing effects and affording fresh skin feel and feeling in use. SOLUTION: This pigment is obtained by spray-drying a mixture of finely crystalline cellulose and a pigment in the form of an aqueous slurry by the use of a spray dryer to stick or cover the surface of the pigment with the finely crystalline cellulose. The cosmetic is obtained by formulating the thus obtained pigment.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention contains a pigment for cosmetics which is suitable for use in, for example, makeup cosmetics, sunscreen cosmetics, and basic cosmetics, a method for producing the same, and a pigment for the cosmetics. It concerns cosmetics.

[0002]

2. Description of the Related Art Conventionally, A) collagen has been used as a means for improving the hygroscopic and moisturizing properties of makeup cosmetics such as foundations, eye shadows and blushers, and basic cosmetics such as sunscreen cosmetics, emulsions and creams. Known methods include a method of directly blending with cosmetics and a method of blending B) a pigment surface-treated with collagen into cosmetics.

On the other hand, the inorganic metal oxide powder is generally hydrophilic and is often used as a pigment mixed in cosmetics. Inorganic metal oxide powders whose surface has been treated with silica, alumina or the like to increase their hydrophilicity are also often used as pigments for cosmetics.

[0004]

However, in the methods (A) and (B) described above in which collagen is incorporated into cosmetics, the use of collagen is limited because it is an animal protein. There is a point. On the other hand, as described above, the inorganic metal oxide powder is generally hydrophilic, and there are inorganic metal oxides whose surface is treated with silica, alumina, etc. to have higher hydrophilicity. Due to the difference in the electric point and the strength of the surface activity, there are problems in that they easily aggregate and settle in water and have poor dispersibility in water.

The present invention has been made in order to solve the above problems, and provides a pigment for cosmetics having moisture absorption and moisture retention and excellent dispersibility in an aqueous system, and a method for producing the same. It is an object of the present invention to provide a cosmetic which is excellent in moisture absorption and moisturizing effect and can provide a fresh and fresh skin feeling and a feeling of use.

[0006]

Means for Solving the Problems and Actions / Effects In order to achieve the above object, the cosmetic pigment according to the first invention comprises:
It is characterized in that fine crystalline cellulose is adhered or coated on the surface of a pigment.

According to the present invention, the fine crystalline cellulose, which has a hygroscopic and moisturizing property and has a property of being colloidized and dispersed in water, is adhered or coated on the surface of the pigment, and thus has a hygroscopic and moisturizing property. A pigment for cosmetics having excellent dispersibility in an aqueous system can be obtained. It is preferable that the fine crystalline cellulose be suspended in a colloidal state when dispersed in water.

In order to produce the cosmetic pigment of the first aspect of the present invention, the method of producing the cosmetic pigment according to the second aspect of the present invention comprises an aqueous slurry containing a mixture of fine crystalline cellulose and a pigment. It is characterized by being spray-dried by a spray dryer.

In the present invention, the fine crystalline cellulose is adhered or coated on the surface of the pigment by spray-drying an aqueous slurry containing a mixture of the fine crystalline cellulose and the pigment with a spray dryer. . According to the present invention, it is possible to manufacture a desired cosmetic pigment by a simple manufacturing process, and thus it is possible to achieve an effect of low cost. Further, since the cosmetic pigment is produced by spray-drying the water slurry in a spray dryer, the particle shape of the obtained pigment is spherical, and a cosmetic pigment with a good feeling of use is obtained. Obtainable.

The cosmetic material according to a third aspect of the present invention is
It is characterized by containing the cosmetic pigment according to the invention.

According to the present invention, a cosmetic pigment having hygroscopic and moisturizing properties and excellent dispersibility in an aqueous system is incorporated into a cosmetic, so that animal-derived collagen is conventionally used in the cosmetic. It is possible to obtain a cosmetic having an excellent moisture absorption and moisturizing effect and having a fresh and fresh skin feel and a feeling of use, without directly blending or blending a collagen surface-treated pigment into the cosmetic.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Next, specific embodiments of the cosmetic pigment according to the present invention, the method for producing the same, and the cosmetic containing the cosmetic pigment will be described.

In the present invention, the fine crystalline cellulose adhered or coated on the surface of the pigment is, for example, a fine crystalline cellulose crystalline for cosmetics commercially available under the name of Avicel RC-591NF from Asahi Chemical Industry Co., Ltd. Secondary agglomerate powder is included. This product is produced by coating the surface of a fine cellulose crystal body of primary particles with a water-soluble polymer and then drying it, and is a powder in which secondary aggregates are formed. Further, when this product is dispersed in water and stirred with a homomixer or a bead mill while applying a strong shearing force, the secondary agglomerates are easily disentangled to form a colloidal state. Other examples include those commercially available from Asahi Kasei Kogyo Co., Ltd. under the name CEORUS CREAM FP-03. This product is
Fine crystalline cellulose is uniformly dispersed in water to form a cream.

The amount of the fine crystalline cellulose attached or coated on the surface of the pigment is not particularly limited,
1% by weight or more 3 to obtain the desired moisture absorption and moisturizing properties, and to obtain a very excellent fresh and fresh skin feel and usability.
It is preferably 0% by weight or less.

Examples of the pigment powder to which the fine crystalline cellulose is attached or coated include inorganic pigments, organic pigments and resin powders used in cosmetics.

Examples of the inorganic pigments include titanium oxide, red iron oxide, yellow iron oxide, black iron oxide, ultramarine blue, zinc white, magnesium oxide, zirconium oxide, mica, sericite, talc, silica, kaolin, calcium carbonate and chromium hydroxide. , Magnesium silicate, aluminum oxide, barium sulfate, titanium-coated mica and the like.

Examples of the organic pigments include lithonol rubin B, lake red C, lysole red, rhodamine B, herringdon pink CN, permanent red, benzidine orange G and phthalocyanine blue.

Examples of the resin powder include nylon powder, acrylic powder, silicon powder and the like.

The method for producing a cosmetic pigment according to the present invention comprises:
This is done as follows. First, a predetermined amount of fine crystalline cellulose to be attached or coated on the pigment is dispersed in water, and this aqueous dispersion is stirred with a homomixer or a bead mill. Next, a predetermined amount of pigment is added to the aqueous dispersion and dispersed and stirred to form a slurry. Then, this water slurry is sent to a spray dryer, and a spray pressure of 2 kg is obtained using a two-fluid nozzle or atomizer.
Spray and dry at f / cm ² or more. At this time,
The temperature of the air sent into the spray dryer is kept at 100 ° C or higher, and the temperature of the sprayed water slurry is 1% or less in dry weight loss measurement (weight loss at 105 ° C for 2 hours), and the water slurry. It is necessary to determine the flow rate of

In the present invention, the cosmetic pigment having fine crystalline cellulose adhered or coated on the surface thereof by the above-mentioned production method may be blended into the cosmetic as it is. If necessary, the cosmetic pigment may be treated with silicone. A surface treatment such as a perfluoroalkyl phosphate ester treatment, a metal soap treatment, a silane coupling treatment, a lauroyl lysine treatment may be performed, and the cosmetic pigment obtained by the surface treatment may be added to the cosmetic.

The dosage form of the cosmetic of the present invention is not particularly limited, and various dosage forms such as solid, cream, paste, emulsified, lotion, powder and solid powder can be used. Further, the form thereof also covers many cosmetics such as makeup cosmetics, skin care cosmetics, hair care cosmetics and the like.

The blending amount of the above-mentioned cosmetic pigment in the cosmetic of the present invention is arbitrarily selected according to the characteristics of the cosmetic, but in consideration of sensory characteristics and expression of effects, it is 0. It is preferably 0.001 to 80% by weight.

[0023]

EXAMPLES Next, specific examples of the cosmetic pigment according to the present invention, the method for producing the same, and the cosmetic containing the cosmetic pigment will be described. The present invention is not limited to the examples described below.

(Production Example 1) Commercially available Asahi Kasei Co., Ltd.
Using crystalline cellulose, Avicel RC-591NF, manufactured by Mfg. Co., was weighed so as to be 10% by weight with respect to titanium oxide as a raw material, and 70 times amount of water was added to the amount of Avicel RC-591NF. Then, stir with a homomixer for about 30 minutes to form a colloidal state. A predetermined amount of titanium oxide is added to this, and stirred for about 10 minutes with a homomixer to form a water slurry. The water slurry is supplied to a spray dryer equipped with a two-fluid spray nozzle. At this time, the hot air temperature of the spray dryer is set to 180 ° C and 2
The spray pressure of the fluid nozzle was 4 kgf / cm ² . Thus, titanium oxide having 10% by weight of fine crystalline cellulose attached was obtained.

(Manufacturing Examples 2 to 9) In the same manner as in Manufacturing Example 1, the raw material pigments were ceritite, talc, mica, yellow iron oxide, red iron oxide, black iron oxide, herringdon pink CN, and laked C. Then, the respective pigments for cosmetics to which 10% by weight of fine crystalline cellulose was adhered were manufactured, and they were named Manufacturing Examples 2 to 9 in order.

The cosmetic pigments of the above Production Examples 1 to 7 were treated with silicon by a known method to prepare a foundation.

Here, in order to confirm the moisture absorption and moisturizing effect of the pigment for cosmetics according to the present invention, the present inventors, as an example, prepared a pigment for cosmetics (serititite) prepared in Production Example 2.
Was tested. The test is to dry the sample and then heat the sample at a relative humidity of 60% and a temperature of 2%.
The sample is placed in a thermo-hygrostat at 3 ° C. and left for 7 days, and the moisture content thereof is measured. After that, it is transferred to a thermo-hygrostat at a relative humidity of 46% and a temperature of 23 ° C., and its moisture retention is measured to determine its moisturizing effect. The results of this test are shown in FIG.

As can be seen from FIG. 1, the sericite of Production Example 2 exhibits an excellent moisture absorption and moisturizing effect as compared with the untreated sericite.

Next, examples and comparative examples will be described.

Example 1 Lipsticks were prepared by using the pigments for cosmetics according to Production Examples 1, 8 and 9 in the following formulation. (1) Castor oil 45.3 (2) Hexadecyl alcohol 25.0 (3) Lanolin 4.0 (4) Beeswax 5.0 (5) Ozokerite 4.0 (6) Candelilla wax 7.0 (7) Carnauba wax 2.0 (8) Titanium oxide of Manufacturing Example 1 2.0 (9) Herringdon Pink CN 2.5 of Manufacturing Example 8 (10) Lake Red C 3.2 100.0 bottles of Manufacturing Example 9 In the examples, (1) to (7) are bases, and (8) to
(10) is a package.

(Comparative Example 1) In this comparative example, the above-mentioned Example 1 was used.
Example 1 used as a raw material for packaging in
Lipstick was prepared in the same manner as in Example 1 except that the conventional pigments for cosmetics, such as titanium oxide, Herringdon Pink CN, and Lake Red C, were added instead of the cosmetic pigments according to Nos. 8 and 9. Prepared.

(Example 2) In this example, as the pigment to be blended, 2% by weight of silicone was applied to each of the cosmetic pigments according to Production Examples 1 to 7 described above. Then, 88% of the powder base prepared in (1) to (8) shown below and 12% of the binder base prepared in (a) to (d) were blended in a Henschel mixer, A powder foundation was prepared. (Powder base) (1) Sericite of silicone-manufacturing manufacturing example 2 35.0 (2) Talc of silicone-manufacturing manufacturing example 3 25.0 (3) Silicone-manufacturing manufacturing mica of Example 4 20.0 (4) Titanium oxide produced by silicone-treated manufacture example 1 10.0 (5) Yellow iron oxide produced by silicone-treated production example 4.0 4.0 (6) Red iron oxide produced by silicone-treated production example 6 1.2 (7) ) Silicone treatment Black iron oxide of Production Example 0.8 (8) Nylon powder to be treated 4.0 100.0 (binder base) (a) Dimethyl polysiloxane (6CS) 30.0 (b) Dimethyl polysiloxane ( 10000CS) 25.0 (c) refined lanolin 9.0 (d) ester oil 36.0 100.0

(Comparative Example 2) In this comparative example, the above-mentioned Example 2 is used.
In place of the cosmetic pigments according to Production Examples 1 to 7 used as a powder-based raw material in, the usual cosmetic pigments titanium oxide, sericite, talc, mica, yellow iron oxide, A powder foundation was prepared in the same formulation as in Example 2 except that the pigments obtained by subjecting red iron oxide and black iron oxide to only 2% silicone treatment were used.

Example 3 Using the pigment used in Example 2, a W / O liquid foundation was prepared with the following formulation. (1) Sericite treated in Silicone Production Example 2 2.0 (2) Silicone Treated Production Example 3 Talc 3.0 (3) Silicone Treated Production Example 1 Titanium oxide 15.0 (4) Red iron oxide of the production example 6 of the silicon dioxide 0.2 (5) Yellow iron oxide of the production example 5 of the silicone treatment 2.5 (6) Black iron oxide of the production example 7 of the silicone treatment 0.8 (7) Methyl Polysiloxane (6CS) 7.4 (8) Dimethylcyclohexane-methyl (polyoxyethylene) dimethylsiloxane copolymer 1.8 (9) Methylpolysiloxane (100CS) 8.0 (10) Methylpolysiloxane (1000CS) 4 .0 (11) methyl Fell polysiloxane 10.0 (12) ethanol 10.0 (13) 1,3-butylene glycol 2.0 (14) Ltd. Water 33.3 100.0

(Comparative Example 3) In this comparative example, Example 3 described above is used.
Siliconized treatment used in Example 1,
2% silicone for each of the usual cosmetic pigments such as titanium oxide, sericite, talc, yellow iron oxide, red iron oxide, and black iron oxide, instead of the cosmetic pigments according to 2, 3, 5, 6, 7 Example 3 except using a pigment that has only been treated
A W / O liquid foundation was prepared with the same composition as described above.

Examples 1 to 3 and Comparative Examples 1 to 3 described above
50 professional panelists use each of the cosmetics in
The cosmetics were evaluated for the feeling of use (fresh feel, moisture absorption and moisturizing feeling). And the evaluation result based on the following three-stage evaluation was obtained. The results are shown in Table 1. (Evaluation criteria) ◎: Good △: Not very good
×: not good

[Table 1]

As is clear from Table 1, the cosmetics using the pigment for cosmetics of the present invention maintained a fresh feeling and also had the effect of absorbing and retaining moisture.

As described above, by incorporating a pigment having fine crystalline cellulose adhered or coated on the surface thereof into a cosmetic composition, it is possible to obtain a cosmetic composition having an excellent moisture absorption and moisturizing property and a fresh skin feel and a feeling of use. I was able to.

[Brief description of drawings]

FIG. 1 is a diagram showing the moisture absorption and retention effect of seritite prepared in Production Example 2.

Continued front page    F-term (reference) 4C083 AA082 AA122 AB052 AB232                       AB242 AB432 AC012 AC072                       AC122 AC332 AC862 AD072                       AD152 AD512 BB25 CC11                       CC12 CC13 CC19 DD17 DD32                       EE06 EE17 FF01

Claims (3)

[Claims] 1. A pigment for cosmetics, characterized in that fine crystalline cellulose is adhered or coated on the surface of a pigment. 2. The method for producing the cosmetic pigment according to claim 1, wherein an aqueous slurry containing a mixture of fine crystalline cellulose and a pigment is spray-dried with a spray dryer. And a method for producing a cosmetic pigment. 3. A cosmetic comprising the pigment for cosmetics according to claim 1.