JP2774971B2 - Purple pigments and cosmetics - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a violet pigment and a cosmetic, and particularly to a violet or reddish violet pigment having a luxurious and elegant color tone, The present invention relates to a cosmetic having an excellent make-up effect and adhesion, and having good spreadability.

[Background Art] (Background of the Invention) Since ancient times, fine colloidal particles of gold dispersed in a liquid have an elegant purple color, and cassia purple (noble purple)
It was said that it was respected. However, this purple fine colloid is easily agglomerated and it has been difficult to take it out in a stable form as a powder.

(Prior Art) Conventionally, as a purple pigment, ultramarine pink, ultramarine violet, manganese violet and the like are known.

However, in the ultramarine type,
Since it decomposes on the acidic side to generate a sulfur odor, there has been a problem that its use is limited in cosmetics, especially in liquids.

Further, in the case of Manganese Violet, there is a problem that the color tends to vary from one production lot to another, and it is difficult to match colors.

Furthermore, when a conventional violet pigment is blended with an eye shadow or the like, there is a problem that the color gradually increases during makeup.

[Problems to be solved by the invention]

The present inventors have conducted intensive studies to solve the above problems, and as a result, the fine gold colloid particles obtained when chloroauric acid is reduced are formed on the carrier surface at the same time as the production of 0.1% by weight of gold on the carrier surface with respect to the carrier weight. It has been found that by coating from 5% by weight to 5% by weight, a purple or reddish purple color is exhibited and the color tone can be delicately changed depending on the reaction conditions, and the present invention has been accomplished based on this finding.

Accordingly, an object of the present invention is to provide an elegant high-grade violet pigment which is chemically stable, has no color variation, and has a high-grade appearance.

Another object of the present invention is to provide a cosmetic composition which uses these purple pigments, exhibits a safe and high-grade cosmetic effect without color change, has excellent adhesion, and has excellent spreadability.

[Means for solving the problem]

According to the invention described in claim 1 of the present application, fine gold colloid particles obtained when chloroauric acid is reduced are coated on the surface of the carrier with 0.1% by weight to 5% by weight of gold based on the weight of the carrier at the same time as its production. It is a purple pigment characterized by the above.

Further, the invention described in claim 2 of the present application is a cosmetic containing a pigment and an extender pigment, wherein the pigment contains the purple pigment according to claim 1.

〔Example〕

 Next, the present invention will be described in detail.

 Prior to the examples, the present invention will be described first generally.

The gold coating used in the present invention is achieved by attaching fine colloidal gold particles obtained when chloroauric acid is reduced to the surface of a carrier simultaneously with its generation.

The amount of gold used in the present invention is 0.1% to 5% based on the weight of the carrier.
It is important to keep the range. If it is 0.1% or less, a sufficient color-forming effect cannot be obtained, and if it is 5% or more, particles that do not adhere to the carrier are formed, which causes problems in terms of color tone, color, and feel.

As the reducing agent used in the present invention, in addition to stannous chloride, organic acids, alcohols, aldehydes and the like, reducing agents such as hydrogen, sodium borohydride and sulfite can be used.

As the carrier used in the present invention, aluminum oxide, titanium oxide, zinc oxide, inorganic pigments such as zirconium oxide,
Talc, kaolin, muscovite, sericite and other micas, magnesium carbonate, calcium carbonate, aluminum silicate, magnesium silicate, calcium silicate, clay and other extenders, titanium mica, bismuth oxychloride,
In addition to silica beads, plastic beads such as nylon, acrylic and polyethylene, they are used as cosmetic and industrial pigments. In addition, what carried out the surface sensitization process or the sensitization process beforehand may be used for these. The sensitization and the sensitization are performed by a method in which a very small amount of stannous chloride or the like is adsorbed on the surface.

Depending on the type of carrier and the amount of gold attached, various controls such as a brilliant, glossy purple pigment, a transparent pigment, a pigment having a hiding power, and the like are possible.

After coating the surface of the carrier with gold, it is preferable to further coat or orientationally adsorb a surface treating agent on the surface. As the surface treating agent, fatty acids, acylamino acids, lecithin, acylated peptides, and oxidized low-molecular-weight polyolefins are preferable in consideration of workability and adhesion of gold particles to the carrier surface. The gold fine particles are adsorbed on the carrier surface in the reduction step, but after the reaction, they may gradually come off in the dehydration and washing step.
It is preferred that the pigment is oriented and adsorbed on the pigment surface via a metal selected from l, Mg, Ca, Zn, Zr, and Ti. Incidentally, the above phenomenon (fine gold particles are adsorbed on the surface of the carrier in the reduction stage, but may gradually come off in the dehydration and washing stage after the reaction is complete) is due to the surface electrical properties of the carrier and the gold particles depending on the pH. It is thought to be due to changes in After gold coating in the state of the metal salt, further surface treatment is performed, so that the gold particles are firmly fixed to the carrier surface and do not come off again. The above surface treatment agents may be used alone or in combination. The surface treatment agent (hydrophobizing agent) is used in the range of 0.5% to 5% based on the weight of a usual pigment. If the content is 0.5% or less, a sufficient fixing effect and hydrophobicity of the gold particles cannot be obtained.

The purple or red-violet pigment coated with gold on the surface of the carrier obtained in this manner is different from the conventional ultramarine-based, mango violet purple pigment, and has a glossy, elegant, high-grade purple or red-purple color. It becomes a pigment.

Gold has been said to have a protective and therapeutic effect on the skin, and there is no problem in terms of safety.

In the case of surface treatment with the hydrophobizing agent, gold is firmly fixed to the surface of the carrier, and dispersibility in an oil agent is extremely improved. Can be

Furthermore, when added to cosmetics, it becomes a very vivid purple to reddish purple luxury cosmetic. As cosmetics, in addition to eye shadows for makeup, powder foundations, rouges, nail lacquers, lipsticks and the like, basic cosmetics such as emulsions and creams can be used.

The purple pigment of the present invention is not limited to cosmetics at all, and can be used as a high-grade purple or magenta pigment for plastics, paper, inks, and the like.

 The following is a description of an embodiment.

Example 1 1 g of gold was immersed in 2 g of aqua regia (nitric acid 1: hydrochloric acid 3) for 24 hours to make chloroauric acid.

Next, 200 g of mica (average particle size 10μ) was added to 2,000 ml of distilled water.
The mixture was added with the above chloroauric acid, placed in a water bath at 30 ° C., and the temperature was adjusted. Then, 10 ml of an aqueous solution of stannous chloride (0.1 mol /) was added dropwise with stirring, and the mixture was further stirred for 2 hours.

After completion of the reaction, the mixture was dehydrated by filtration under reduced pressure, washed with 2,000 ml of distilled water, and dried at 110 ° C. for 5 hours to obtain a purple pigment whose surface was coated with gold.

The resulting red-purple pigment had a smooth feel and was slightly glossy, and had an unprecedented elegant color tone.

Example 2 1.5 g of gold was added to 3 g of aqua regia and dissolved to prepare chloroauric acid.

Next, 100g of talc (average particle size 5μ) is added to 1,000ml of distilled water
And the mixture was added with the above-mentioned chloroauric acid, put in a water bath at 100 ° C., and the temperature was adjusted. Then, with stirring, salicylic acid (0.1 mol /
) 30 ml was added dropwise and stirring was continued for another 2 hours while refluxing.

After completion of the reaction, the mixture was dehydrated by filtration under reduced pressure, and washed with 1,000 ml of distilled water. The obtained purple pigment was dispersed again in 400 ml of hot water at 50 ° C., 2 g of hydrogenated lecithin was added and dissolved with stirring, 0.3 ml of aluminum chloride (200 g /) was added, and hydrogenation was performed on the surface of the purple pigment. Lecithin was directionally adsorbed. After dehydration by filtration under reduced pressure, drying was performed at 110 ° C. for 5 hours, gold was coated on the surface, and a pigment in which hydrogenated lecithin was oriented and adsorbed was obtained.

The obtained pigment was hydrophobic and bright purple, had a very smooth feel, and had a high-grade color tone.

Each 2 g of the pigment obtained in Example 1 and 2 g of the pigment obtained in Example 2 were added to 50 ml of distilled water, and the mixture was allowed to stand with a homogenizer.

After 48 hours of comparative observation, the supernatant of Example 1 was slightly blueish purple with fine gold particles floating, but the supernatant of the pigment of Example 2 was completely Transparent
No gold particles were floating.

Example 3 Composition-1 Mica of Example-1 45 Mic of Example-2 33 Titanium mica 15 Composition-2 Titanium mica 6.0 Squalane 6.0 Vaseline 1.0 Cholesterin stearate 1.0 Component-1 is homogeneous The mixture was mixed, and the heat-dissolved mixture of Component-2 was added thereto and mixed with a mixer until uniform.

This was pressed into a sieve plate with a 48 mesh sieve to obtain an eye shadow. The obtained eye shadow had a luxurious, elegant color tone of reddish purple and had a smooth, stretchy and excellent cosmetic effect. Also, the discoloration was very small and excellent as compared with the conventional one.

Example-4 The pigment obtained in Example-1 was subjected to a surface treatment according to the following procedure.

First, 100g of red-purple pigment coated with gold is added to 500m of water.
l completely dispersed.

Next, oxidized polyolefin 4202 manufactured by Mitsui Petrochemical Co., Ltd.
-E (oxidized 17, average molecular weight about 2600)
g and isopropyl alcohol (5 g) were added and dissolved by heating. This was neutralized by adding 1.5 equivalents of a KOH aqueous solution, added to the above dispersion, stirred, and completely emulsified.

Next, 1.0 ml of a 15% aluminum sulfate aqueous solution was added dropwise,
Stirring was continued for another 10 minutes.

This was dehydrated with a suction filter and dried at 105 ° C for 16 hours to obtain a treated pigment having strong water repellency.

Nail lacquer A nail lacquer was prepared using the above-mentioned red-violet treated pigment.

Composition ・ Nitrocellulose 15 (parts) ・ Alkyd resin 10 ・ Ethyl succinate 7 ・ Butyl succinate 27 ・ Toluene 27 ・ Surface treated pigment 13 ・ Organic bentonite 1 (1) Alkyd resin, organic bentonite and ethyl succinate 3.5, Butyl citrate 10, toluene 10 and organic bentonite were well kneaded.

(2) Nitrocellulose, ethyl succinate 4, butyl succinate 17, and toluene 17 were mixed and dissolved with a disper.

(3) (1) and (2) were mixed, and a surface-treated pigment was added thereto and dispersed until uniform.

The resulting nail cracker was an elegant red-purple nail lacquer with a beautiful color tone that was never before seen.

When this nail lacquer was applied to the nails, it was smooth, very beautiful and had an excellent cosmetic effect.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION According to this invention, compared with the conventional purple pigment, a purple pigment which is chemically stable, has a transparent feeling, has no color variation, and has a high-grade feeling can be obtained.

Further, the cosmetic using the purple pigment of the present invention has no change in color at the time of make-up, and is a cosmetic which is smooth and has good spreadability.

Claims (2)

(57) [Claims] 1. A violet pigment characterized in that fine gold colloidal particles obtained by reducing chloroauric acid are coated with 0.1% to 5% by weight of gold based on the weight of the carrier at the same time as the formation of the colloidal particles. . 2. A cosmetic comprising a pigment and an extender pigment, wherein the pigment comprises the purple pigment according to claim 1.