JPH04332766A - Composite colored pearl-lustrous pigment and cosmetic containing the same - Google Patents

Abstract

PURPOSE:To provide a pearl-lustrous pigment and a colored pigment having the same electric charge and adhered to each other with a surface charge- controlling agent, having an excellent and brilliant pearl-lustrous appearance, capable of having the color within a wide color tone range, and having excellent safety and stability. CONSTITUTION:The objective lustrous pigment produced as follows; mixing a pearl-lustrous pigment such as titanium mica with a colored pigment such as titanium oxide, both having the same electric charge, in an aqueous medium such as water, adding a surface electric charge-controlling agent such as basic aluminum salt to the mixture, and subsequently collecting and drying the produced colored precipitates and capable of imparting a brilliant color and a pearl luster to cosmetics, paints, plastics, inks, oil or water colors, appliances, decorations, etc. A cosmetic containing the lustrous pigment.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to complex colored pearlescent pigments that have a clear appearance, excellent pearl luster, a wide range of hues, and excellent safety and stability, and cosmetics containing the same. .

0002

[Prior art and problems to be solved by the invention] Conventionally,
Mica-titanium composite materials, in which the surface of mica is coated with titanium dioxide, have pearlescent luster and various interference colors, and are therefore widely used as pigments in cosmetics, paints, plastics, and the like. These titanium mica are, for example,
It is produced by the method described in Japanese Patent No. 5644, and has titanium dioxide coated on the surface of mica particles, and exhibits various interference colors depending on the thickness of the titanium oxide coating layer. However, unlike interference colors, these external colors were almost white, and although they had excellent pearlescent luster, clear external colors could not be obtained.

[0003] For this reason, various external colors are obtained by mixing common colored inorganic pigments and organic pigments with titanium mica. However, due to differences in the particle size, specific gravity, shape, surface properties, etc. of titanium mica and general pigments, it is difficult to mix them uniformly, and there is a problem that they separate after mixing, resulting in color separation. was there.

[0004] Therefore, in order to obtain a glossy pigment with an excellent appearance color, a composite of a general inorganic pigment or an organic pigment and a glossy pigment such as titanium mica has been carried out. Examples of such methods include (1) a method of coating the surface of a lustrous pigment with iron oxide, nickel oxide, cobalt oxide, copper oxide, chromium oxide, etc. having a unique color (Japanese Patent Publication No. 43-25644);
, (2) A method in which an aluminum hydroxide layer is fixed on the surface of a glossy pigment, and then the dye is fixed on the pigment surface using a chelating agent and a dye having a poorly soluble salt-forming group (Japanese Patent Laid-Open No. 17910/1983) ), (3) Red 2 on the glossy pigment surface
26 by various methods (Unexamined Japanese Patent Publication No. 62-1
69716) and (4) a method of coating the surface of a glossy pigment with an insoluble salt of an acidic dye and a basic aluminum salt (Japanese Patent Application Laid-Open No. 2-34669).

However, these methods have problems such as limited hue, insufficient coloring, and easy dyeing.

[0006]Therefore, there has been a desire for a stable lustrous pigment that has excellent external color, excellent pearlescent luster, and does not cause color separation.

[0007]

[Means for Solving the Problems] Under these circumstances, the present inventors conducted intensive research and found that if a pearlescent pigment and a colored pigment with the same surface charge are attached using a surface charge adjusting agent, It is possible to obtain a complex colored glossy pigment that has a clear external color, a moderate glossiness, and does not cause color separation when used, and furthermore, a cosmetic containing this pigment has excellent external color clarity and gloss. They discovered this and completed the present invention.

That is, the present invention provides a composite colored pearlescent pigment characterized in that a pearlescent pigment and a colored pigment having the same surface charge are attached using a surface charge adjusting agent, and a cosmetic containing the same. This is what we provide.

[0009] The pearlescent pigment used in the present invention includes natural scales, bismuth oxychloride, titanium mica, etc., and titanium mica is particularly preferred.

Among these, titanium mica can be prepared by methods known per se, for example, firstly, mica of a selected particle size is suspended in a dilute strongly acidic solution of titanyl sulfate, and then rapidly ca. A layer of hydrated titanium dioxide is deposited on the mica substrate by heating to 90-100°C and holding at this temperature for about 2-3 hours. Alternatively, mica is suspended in hot water, rapidly added with a strongly acidic titanyl sulfate solution, and heated to boiling until hydrolysis is complete to precipitate a hydrated titanium dioxide layer on the mica substrate. The product is then filtered, washed with water and isolated at pH 5, dried at 80°C, and then the dried product is calcined in air at about 950°C for 1 hour to obtain the luster pigment titanium mica. Can be done. The titanium mica obtained in this way has a low refractive index (N = 1.5 to 1
．． Relatively large plate-like particles (5 to 5
0 μm), a regular multiple reflection phenomenon of light accompanied by some light scattering occurs, which is observed as pearl light. In the case of mica titanium, the film thickness of titanium oxide is 6
By varying the range from 0 to 170 μm, silver
It can be controlled to show interference colors of gold, red, purple, blue, and green. At this time, complementary color components pass through, so the powder color of glossy pigments having these interference colors and the coating color on a white background are
It becomes almost white. Such titanium mica is commercially available as iris-colored type and interference pearl, and these can also be used.

Coloring pigments include inorganic pigments such as navy blue, ultramarine blue, yellow iron oxide, chromium oxide, titanium oxide, and red iron oxide; Red No. 202, Red No. 203, Red No. 204, Red No. 205, Red No. 206, Red No. 207, Red No. 208, Red No. 219, Red No. 220, Red No. 221, Red 2
No. 26, Red No. 228, Daidai No. 203, Daidai No. 204, Yellow No. 205, Red No. 404, Red No. 405
Organic pigments such as No. 401, Orange No. 401, and Blue No. 404 can be used. These colored pigments used have the same surface charge as the pearlescent pigments. That is, if the pearlescent pigment has a negative surface charge,
Color pigments that also have a negative surface charge are used.

The surface charge adjusting agent is used to suppress the electrostatic repulsion of pigments and compose them, and those having a charge different from that of pearlescent pigments and color pigments are used. Examples of such surface charge control agents include polyvalent metal salts such as basic aluminum salts, cationic polymers such as Polycoat NH (polyoxyethylene coconut oil polyamine (15EO)), and cationic surfactants. Among these, basic aluminum salts include, for example, the following general formula Aln(OH)mXl (wherein, X represents Cl, Br, I or CH3COO, and n, m and l are numbers satisfying 3n=m+l) ), which have good solubility in water and whose aqueous solution has a weakly acidic pH, especially Al2(OH)
5Cl, Al(OH)(CH3COO)2 are preferred.

[0013] The composite colored pearlescent pigment of the present invention can be obtained by, for example, mixing a pearlescent pigment and a colored pigment in an aqueous medium such as water, adding a surface charge adjusting agent thereto, separating the resulting colored precipitate, and drying. Manufactured by If the coloring pigment is too large, color separation will occur, and if it is too small, homogeneous precipitation of the target pigment cannot be obtained, so the ratio of the coloring pigment to the pearlescent pigment should be 0.5.
It is preferable to use it in a range of 5% by weight. In addition, it is preferable to use a pigment that has been atomized using a sand mill or the like, since atomization of the pigment increases the adhesive force and increases the chroma of the resulting composite colored pigment. The appropriate amount of the surface charge adjusting agent to be added is determined depending on the surface charge of the pearlescent pigment used.

The colored precipitate obtained is filtered and thoroughly washed with water, then with acetone or alcohol, and then dried. Drying is preferably carried out under conditions that do not cause aggregation, for example at 50 to 80° C. under normal pressure or reduced pressure.

Since the composite colored pearlescent pigment of the present invention thus obtained has a clear and highly concentrated appearance color, the cosmetic composition of the present invention containing the same has a clear appearance color and pearlescent luster. It will be a combination of both. The cosmetics of the present invention generally contain 0.5 to 50% by weight, particularly 1 to 40% by weight of complex colored pearlescent pigments, although this varies depending on the type of cosmetic, composition, type of pigment, etc. preferable.

In addition to the complex colored pearlescent pigments, the cosmetics of the present invention also contain ingredients used in ordinary cosmetics, such as extender pigments such as kaolin and nylon powder; titanium oxide, zinc white, iron oxide, and pearls. Inorganic pigments such as Red No. 202, Red No. 226, Yellow No. 4 Aluminum Lake, etc.; Known surface hydrophobic treatment powders such as silicon treatment, metal soap treatment, N-acyl glutamic acid treatment; solid or liquid paraffin , solid paraffin, microcrystalline wax, hydrocarbons such as vaseline, ceresin, ozokerite, montan wax; vegetable oils or animal fats and waxes such as olive oil, earth wax, carnauba wax, lanolin, spermaceti; stearic acid, palmitic acid, oleic acid , glycerin monostearate, glycerin distearate, glycerin monooleate, isopropyl myristate, isopropyl stearate, butyl stearate, and other fatty acids or their esters; ethyl alcohol, isopropyl alcohol, cetyl alcohol, stearyl Alcohols such as alcohol, palmityl alcohol, and hexyldodecyl alcohol; polyhydric alcohols having a moisturizing effect such as glycol, glycerin, and sorbitol can be appropriately blended within a range that does not impair the effects of the present invention.

The cosmetic composition of the present invention can be produced according to a conventional method, and can be applied as lipstick, eye shadow, blush, nail enamel, eyeliner, eye pencil, mascara, etc.

[0018]

[Function and effect] The composite colored pearlescent pigment of the present invention is made by heteroagglomerating the pearlescent pigment and the colored pigment in a highly dispersed state by controlling the surface charge using a surface charge control agent. It is something. The composite colored pearlescent pigment of the present invention has a clear exterior color and excellent pearlescent luster, and also has excellent stability without color separation during use.
Vivid colors and pearlescent luster can be imparted to various cosmetics, paints, plastics, inks, paints, daily necessities, decorative items, etc. Moreover, the cosmetic composition containing the composite colored pearlescent pigment of the present invention has excellent external color clarity and gloss.

[0019]

EXAMPLES Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to these Examples. Example 1 Mica titanium (manufactured by Mearl, Flamenco Su
Per Pearl) 10.0g suspended in 25 times the amount of purified water, red No. 202 (manufactured by Sun Chemical Co., Ltd.)
A solution of 0.2 g dispersed in 100 ml of water was added with stirring. Furthermore, 0.1% basic aluminum chloride (manufactured by Hoechst, Rokron P, composition formula Al
13O4(OH)24(H2O)12Cl7) 20m
1 was added, and titanium oxide and red No. 202 were deposited. After allowing the mixture to stand and removing the supernatant, the precipitate was filtered, washed with water, washed with ethanol, and dried under vacuum at 80°C to obtain a glossy pigment exhibiting a bluish red color in both the powder color and the coating color.

Example 2 Lipstick: (Ingredients) Carnauba wax
2 (g) Ceresin
7 Candelilla wax
5 Microcrystalline wax
5 Beeswax

5 Lanolin
4
castor oil
40 Hexadecyl alcohol
15 Sucrose pentastearate
5 Pigment of Example 1
12 Antioxidants, fragrances

Appropriate amount (manufacturing method) The above ingredients except for the pigment were mixed, heated and dissolved at 90°C, and then the pigment was added and molded to obtain a lipstick. The obtained lipstick had a clear external color and pearlescent luster, and the external color and the applied color matched.

Example 3 Nail enamel: (Component A) Nitrocellulose
20.0 (g) Alkyd resin
15.0 Camphor

3.0 Plasticizer

6.0 Butyl acetate

23.0 Ethyl acetate

9.0 Isopropanol
7.0
butanol
2.0
toluene
4.8 (Component B) Pigment of Example 1
2.0 Organically modified bentonite
1.2 (Production method) After mixing and dissolving component A, component B was added to obtain a nail enamel that had both a clear external color and pearlescent luster.

Example 4 Powder eyeshadow: (Ingredients) Talc
15 (g)
Sericite
30 Pigment of Example 1
38 Gunjo

5 Iron oxide
2
2-Ethylhexanoic acid triglyceride
6 Lanolin
5
polyethylene wax
4 (Production method) Among the above ingredients,
The powder part was stirred and mixed in a blender, and the heated and uniformly dissolved oil phase part was sprayed thereon, followed by further stirring. Thereafter, it was crushed and compression molded using a molding machine to obtain a solid powder eye shadow. The resulting eyeshadow was clear both in appearance and during application, and had a natural finish with no glare.

Claims (2)

[Claims] 1. A composite colored pearlescent pigment characterized in that a pearlescent pigment and a colored pigment having the same surface charge are attached using a surface charge adjusting agent. 2. A cosmetic comprising the complex colored pearlescent pigment according to claim 1.