JPS61286310A - Makeup cosmetic - Google Patents

Abstract

PURPOSE:A makeup cosmetic having high adhesivity to the skin and high safety, improved smoothness and spread and a good wetting feeling, obtained by blending a cosmetic with coated pigment prepared by coating the surface of inorganic pigment with a polyvalent metallic salt of anionic high polymer compound. CONSTITUTION:A makeup cosmetic blended with 10-100wt% calculated as pigment of coated pigment obtained by coating the surface of inorganic pigment with a polyvalent metallic salt of an anionic high polymr compound. The coated pigment is obtained by adding the inorganic pigment (e.g., titanium oxide, talc, etc.) to an aqueous solution or an alcoholic aqueous solution at 20-60 deg.C, containing one ore more anionic high polymer compounds such as hyaluronic acid, alginic acid, carrageenan, pectin, carboxymethyl cellulose, chondroitin sulfuric acid, polyacrylic acid, etc., while stirring, then adding an aqueous solution of a polyvalent metallic salt of Mg, Ca, Al, Zn, etc., agglomerating and precipitating the pigment, washing with water, filtering, drying, grinding, etc. EFFECT:The title cosmetic has good durability of makeup and improved mechanical properties.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a makeup cosmetic containing an inorganic pigment coated with a polyvalent metal salt of an anionic polymer compound. More specifically, it has high adhesion and safety to the skin (skin), is smooth, spreads well, has a moist feel (moist feel), has makeup retention (makeup stability),
This invention relates to makeup cosmetics with good mechanical properties.

(Prior Art) Conventionally, various inorganic pigments such as talc, kaolin, mica, titanium mica, and magnesium silicate have been used as inorganic pigments for makeup cosmetics due to their excellent properties, such as spreadability and slipperiness on the skin. It has been widely used due to its good properties. However, when it is actually blended into cosmetics and applied to the skin, it does not give a moist feeling, has poor adhesion to the skin, and has the disadvantage of causing a feeling of slippery feeling and causing makeup to come off.

In addition, in conventional make-up cosmetics that use a mold type that uses powder for make-up cosmetics, when the amount of oil-based binder is increased, the surface of the mold becomes partially glossy during use.
On the other hand, if the amount of oil-based binder is small, the puff will become slippery and difficult to remove, and on the other hand, the drop strength will be weak and it will break easily.

For this reason, the amount of oil-based binder to be blended was limited, and it was difficult to obtain cream-type cosmetics that contained a large amount of oil-based binder, as well as soft, easy-to-remove cosmetics that did not break easily.

Furthermore, conventional inorganic pigments for make-up cosmetics have contributed to skin irritation due to the fact that the polarity of their surface is significantly different from that of the skin and the hardness of the pigments.

(Problems to be Solved by the Invention) The object of the present invention is to provide a product that has high adhesion and safety to the skin, is smooth, has good spreadability, and has a moist feel.
To provide a makeup cosmetic with good makeup retention and mechanical properties.

(Means for Solving the Problems) The above object of the present invention is achieved by a makeup cosmetic containing a coated pigment in which the surface of an inorganic pigment is coated with a polyvalent metal salt of an anionic polymer compound. Ru.

Examples of the base inorganic pigment constituting the coated pigment of the present invention include titanium oxide, talc, sericite, mica, kaolin, zinc white, magnesium silicate, calcium carbonate, titanium mica, iron oxide, ultramarine, and navy blue. I can make a fist.

Examples of polyvalent metal salts of anionic polymer compounds in the N layer constituting the coated pigment of the present invention include natural anionic polymer compounds such as hyaluronic acid, alginic acid, carrageenan, and pectin, carboxymethyl cellulose, and chondroitin. Semi-synthetic anionic polymer compounds such as sulfuric acid,
or magnesium salts, calcium salts, aluminum salts of synthetic anionic polymer compounds such as polyacrylic acid,
Zinc salts, etc. are exposed.

The coated pigment according to the present invention is prepared by adding the inorganic pigment to an aqueous solution or alcoholic aqueous solution containing one or more anionic polymer compounds at 20 to 60°C under stirring, and then It is obtained by adding an aqueous solution, coagulating and precipitating, washing with water, filtering, drying, and pulverizing.

The amount of the polyvalent metal salt of the anionic polymer compound in the coated pigment is usually 0.5 to 15% by weight (preferably 1 to 7% by weight) based on the weight of the inorganic pigment. If the amount of polyvalent metal salt is less than 0.5% by weight, it is difficult to sufficiently coat the surface of the inorganic pigment, and as a result, the powder is not much different from conventional makeup powders, and as mentioned above, it is difficult to coat the surface of the inorganic pigment sufficiently. It has some drawbacks. In addition, if the amount exceeds 15% by weight, the coating layer becomes too thick, resulting in a pigment that is prone to secondary aggregation, and when added to makeup cosmetics, although it has adhesive strength, it becomes difficult to spread, making it undesirable for use. .

The amount of the polyvalent metal salt used in producing the covering pigment is preferably 80 to 110% of the number of equivalents to the anionic polymer compound used.

Next, the characteristics of the coated pigment applied to the present invention will be explained. First, it has much better adhesion to the skin than conventional inorganic pigments, and also has good spreadability. Second
In addition, the oil absorption and water absorption amount increased to about 1.5 times that of the inorganic pigment before the coating treatment. Thirdly, the activity of the pigment surface is blocked and its polarity is close to that of the skin, making it difficult to cause skin irritation. Fourth, it has a high affinity for the skin due to its increased wettability and water retention capacity. Fifth, the coating layer completely and firmly covers the surface of the inorganic pigment with appropriate unevenness, and even if it is blended into cosmetic ingredients, it will not separate at all.

Although the amount of the coated pigment in the makeup cosmetic of the present invention varies depending on the formulation of the cosmetic, it is usually within the range of 10 to 100% by weight of the pigment. Further, when used in combination with conventional inorganic pigments, the blending amount is 30% by weight or more based on the weight of the blended inorganic pigments, preferably 50i! ! i
It is t% or more.

The makeup cosmetics according to the present invention include, for example,
Available in various types of foundation: type, oil-based, and emulsion.

(Effects of the Invention) The makeup cosmetics of the present invention have the following characteristics: Firstly, when used, it blends well with the skin, adheres smoothly and evenly, and does not smear easily over time. Second, even if a larger amount of oil-based binder is blended, the surface of the mold will not become uneven during use, and the puff will not slide upward, making it difficult to remove. Therefore, it is possible to obtain a molded type cosmetic that is soft and hard to break.Thirdly, it is less likely to cause the skin to become shiny or dull due to oil after use.

Fourth, it has a high affinity for the skin, has a moist feel, and is less likely to cause skin irritation.

(Example) The present invention will be described below with reference to Examples. In the examples, parts refer to parts by weight, and % refers to 1% by weight.

The test methods for (A) usage surface test, CB) drop strength test, [C] skin roughness test, and (D) sensory test described in Examples are shown below.

(A) Usage surface test In this test, approximately 12 pieces of each sample were filled into a combined volume of inner diameter 55 (φ) x thickness 5.0 (shoulder) at a pressure of 20 kq/cd.
After rubbing the mold surface of this press-molded product with a puff,
This was done by observing the surface condition and determining the presence or absence of uneven gloss on the surface.

CB) Drop strength test (test method) In this test, 10 of each of the 30 press-molded products mentioned above were dropped vertically from a specified height so that the combined volumes were horizontal, and the damaged press-molded products were removed. This was done by counting.

(C) Skin roughness test (test method) Each sample was used continuously for 20 days by 30 women aged 18 to 40, and the skin roughness during use was investigated through a questionnaire survey.

(D) Sensory Test This test was conducted by six expert panelists using a paired comparison method between the comparative example and the product of the present invention. Based on comparative example (1)
Good, (2) Fairly good, (3) Same, (4) Fairly bad.
(5) Rated on a 5-point scale, such as poor.

Next, an example of producing a coated inorganic pigment used in Examples will be shown.

Production example 1 Sodium alginate 159 in 15% alcohol aqueous solution 98
59 and stirred and dissolved at 50° C. to prepare an alcoholic aqueous solution containing 1.5% by weight of sodium alginate. Talc 10009 is added to this under stirring. After sufficient dispersion, 10% acetic acid was added to the above solution to adjust the pH to 4.5.
Adjust to. Subsequently, 0.2M calcium chloride aqueous solution 5
Add 40 ml and stir thoroughly. The talc coated with calcium alginate thus obtained was
The coated pigment 9802 of the present invention was obtained by washing with an aqueous solution of 5096 alcohol, filtering, drying, and grinding.

(Hereinafter, this will be referred to as coated pigment N.) As a result of elemental analysis of the coated pigment of the present invention, it was found that 162% by weight of calcium alginate was attached, and as a result of observing the surface with an electron microscope, it was found that the surface of talc was It was confirmed that the film was uniformly coated with calcium alginate.

Production Example 2 A product was produced in the same manner as Production Example 1 except that sodium alginate in Production Example 1 was replaced with sodium hyaluronate to obtain talc 9807 coated with calcium hyaluronate. (Hereinafter, this will be referred to as coated pigment (2).) Production Example 3 Mica 10009 was added to 50°C warm water and thoroughly stirred and dispersed. To this, 4000 g of a 0.5% by weight aqueous solution of sodium polyacrylate was gradually added.

Further, while continuing stirring, 1800 s of a 0.2M aqueous calcium chloride solution was added and stirred thoroughly. Thereafter, washing, drying, and pulverization were performed in the same manner as in Production Example 1 to obtain mica 970 coated with calcium polyacrylate.

(Hereinafter, this will be referred to as coated pigment M.) Production Example 4 Produced in the same manner as in Production Example 3, replacing mica with titanium oxide and calcium chloride with magnesium sulfate, and using magnesium polyacrylate. 970 g of coated titanium oxide was obtained. (Hereinafter, this will be referred to as coating pigment T.
That's what it means. ) Production Example 5 Produced in the same manner as in Production Example 1 by substituting sodium pectate for sodium alginate, replacing talc with kaolin, and replacing calcium chloride with aluminum chloride, and coated with aluminum pectate. Get Kaolin 9809. (Hereinafter, this will be referred to as a coated pigment.) Production Example 6 A method similar to Production Example 3, except that mica in Production Example 3 was replaced with sericite, sodium polyacrylate was replaced with sodium carboxymethyl cellulose, and calcium chloride was replaced with zinc chloride. 980 sericite coated with zinc carboxymethyl cellulose was obtained. (Hereinafter, this will be referred to as coated pigment 8.) Manufacturing Comparative Example 1 Talc 980 coated with sodium hyaluronate was prepared in the same manner as Manufacturing Example 2, except that 0.2M calcium chloride was not added. Get 1 piece. (Hereinafter, this will be referred to as coated pigment B.) Example 1 A is placed in a Henschel mixer and mixed for 10 minutes, and B is gradually added thereto, followed by mixing for 10 minutes. This is then ground in a grinder. Thereafter, the powder foundation of the present invention was obtained by press filling.

Example 2 A powder foundation silon of the present invention was obtained in the same manner as in Example 1 except that coated pigment A and coated pigment T were removed from the formulation of powder foundation 1 in Example 1 and replaced with talc and titanium oxide itself. O Comparative Example 1 Example 1 (7) Powder Foundation A comparative powder foundation was obtained in the same manner as in Example 1 by removing all coated pigments from the ginger formulation and replacing them with talc, mica, and titanium oxide itself.

Next, the results of each test conducted using each of the above-mentioned powder foundations are shown.

Table-I (A) Surface test used 07 The surface is uniform and no local unevenness in gloss is observed.

×: Non-uniform gloss unevenness is observed on the surface.

Table-I (B) Drop strength test table-I (0) Rough skin condition test table-W (D) Sensory test As shown in the results above, the powder foundation silon of Example 1 and Example 2 is different from that of Comparative Example 1. Good results were obtained in all aspects of performance compared to powder foundation silon.

Example 3 Al was placed in an Al Henschel mixer and mixed for 10 minutes, then B was gradually added thereto and mixed for 10 minutes. Next, this is pulverized using a pulverizer. Thereafter, press filling was performed to obtain a pressed powder of the present invention.

Comparative Example 2 A comparative pressed powder was obtained in the same manner as in Example 3 except that coating pigment (1) was removed from the pressed powder formulation of Example 3 and replaced with talc.

Comparative Example 3 A comparative pressed powder was obtained in the same manner as in Example 3 except that coated pigment (1) was removed from the pressed powder formulation of Example 3 and replaced with coated pigment B of Comparative Production Example 1.

The results of each test conducted using each of the above pressed powders are shown below.

Table-V (A) Surface test used m: The surface is uniform and no local gloss unevenness is observed.

Table VI (B) Drop strength test table ■ (D) Sensory test As shown in the above results, the pressed powder of Example 3 gave good results in all performances, whereas the comparative example 2 The pressed powder of Comparative Example 3 had lower drop strength, and the pressed powder of Comparative Example 3 was not as good in surface testing and removal into puffs as the pressed powder of Comparative Example 2.

Example 4 A is placed in a Henschel shaker and mixed for 5 minutes, to which B is added and subsequently mixed for 5 minutes. Next, this was ground with a grinder and filled into a container to obtain the baby powder of the present invention.

Example 4 A comparative baby powder was obtained in the same manner as in Example 4 except that the coating pigment was removed from the baby powder formulation of Example 4 and replaced with talc.

Oil absorption amount of baby powder of Example 4 and Comparative Example 4 (JIS
K5101) and water absorption (based on JIS K5101 using purified water instead of linseed oil), the results are shown below.

Table -■ As shown in the above results, the baby powder of Example 4 has a larger oil absorption amount and water absorption amount than the baby powder of Comparative Example 4, and absorbs sweat and moisture better.

Furthermore, in a use test using 10 infants, the baby powder of Example 4 had good adhesion during use and little scattering of powder.

Also, no diaper rash was caused.

Example 5 Heat A to 80°C or higher to melt it. Next, B is added and thoroughly kneaded. And keep stirring 75
Cool to °C and add C. This was directly poured into a stick container at 70°C ± 2°C, and allowed to cool at room temperature to obtain the stick foundation silicone of the present invention.

19-Example 6 Warm the temperature to 85°C and the temperature to 80°C. Add B to C while stirring and disperse thoroughly. At this point, the warmed mush is gradually added and emulsified. Cool while continuing to stir, and add D at 60-65°C. The mixture was further cooled to 35°C while stirring to obtain an emulsion type foundation of the present invention.

Comparative Example 5 A comparative stick foundation was prepared in the same manner as in Example 5 except that the coated pigment and coated pigment T were removed from the stick foundation formulation of Example 5 and replaced with kaolin and titanium oxide, respectively.

I got this.

Comparative Example 6 From the formulation of the emulsion type foundation Silon of Example 6,
A comparative emulsion type foundation scene was obtained in the same manner as in Example 6 except that the coated pigment T and the coated pigment S were replaced with titanium oxide and sericite, respectively.

The results of each test conducted using each of the above foundations are shown below.

Table - [(0) Rough skin condition test table - Tested.

As shown in the above results, Examples 5 and 6 are similar to Comparative Example 5.
, better results were obtained in all performances compared to Comparative Example 6.

Claims (1)

[Claims] A makeup cosmetic containing a coated pigment in which the surface of an inorganic pigment is coated with a polyvalent metal salt of an anionic polymer compound.