FILLER PIGMENTS

Abstract

Filler pigments based on platelet-shaped substrates, which are coated with barium sulfate and at least two metal oxides and/or metal hydroxides are highly suitable as filler pigments especially for cosmetic formulations.

Claims

1. A filler pigment comprising a platelet-shaped substrate coated with barium sulfate and at least two metal oxides and/or metal hydroxides of the following layer structure: substrate+SnO.sub.2+TiO.sub.2+BaSO.sub.4 substrate+mixture of SnO.sub.2+TiO.sub.2+BaSO.sub.4 substrate+mixture of SnO.sub.2+TiO.sub.2+BaSO.sub.4+layer of SiO.sub.2 on top substrate+SiO.sub.2+TiO.sub.2+BaSO.sub.4 substrate+SiO.sub.2+SnO.sub.2+BaSO.sub.4 substrate+SnO.sub.2+TiO.sub.2+BaSO.sub.4+Carmine red substrate+SnO.sub.2+TiO.sub.2+BaSO.sub.4+Prussian Blue substrate+SnO.sub.2+BaSO.sub.4/TiO.sub.2 substrate+SnO.sub.2+TiO.sub.2+BaSO.sub.4+SiO.sub.2 substrate+BaSO.sub.4+SnO.sub.2+TiO.sub.2+SiO.sub.2 substrate+Al.sub.2O.sub.3+BaSO.sub.4+SnO.sub.2+SiO.sub.2 substrate+ZnO+Al.sub.2O.sub.3+BaSO.sub.4+SiO.sub.2 substrate+Al.sub.2O.sub.3+BaSO.sub.4+SnO.sub.2 or substrate+ZnO+Al.sub.2O.sub.3+BaSO.sub.4.

2. A filler pigment according to claim 1, wherein the substrate is natural or synthetic mica, doped or undoped Al.sub.2O.sub.3 flakes, doped or undoped SiO.sub.2 flakes, talc, kaolin, or doped or undoped glass flakes or mixtures thereof.

3. (canceled)

4. The filler pigment according to claim 1, wherein the substrate has an aspect ratio of 2 to 2000.

5. The filler pigment according to claim 1, containing an amount of barium sulfate of 5-200 wt.-% based on the substrate.

6. (canceled)

7. The filler pigment according to claim 1, surface coated with a layer of SiO.sub.2.

8. (canceled)

9. A process for the production of a filler pigment of claim 1, comprising suspending the substrate in an aqueous solution, adding the barium salt and at least two metal salt solutions at a pH which is suitable for hydrolysis and which is selected in such a way that the barium sulfate and the metal oxides and/or hydroxides are precipitated directly onto the substrate.

10. In paint, lacquer, ink, printing ink, plastic or cosmetic formulation comprising a filler pigment, the improvement wherein the filler pigment is one according to claim 1.

11. A cosmetic formulation containing a filler pigment of claim 1, in an amount of up to 95% by weight.

12. The cosmetic formulation according to claim 11, further comprising at least one absorbent, astringent, antimicrobial substance, antioxidant, antiperspirant, antifoaming agent, antidandruff active ingredient, antistatic, binder, biological additive, bleaching agent, chelating agent, deodorant, emollient, emulsifier, emulsion stabilizer, dye, humectant, film former, filler, odor imparting substance, flavorant, insect repellent, preservative, anticorrosion agent, cosmetic oil, solvent, oxidant, vege-table constituent, buffer substance, reducing agent, surfactant, propellant gas, opacifier, UV filter and UV absorber, denaturing agent, viscosity regulator, perfume or vitamin.

13. A filler pigment according to claim 1 comprising as the substrate platelet-shaped natural or synthetic mica.

14. A filler pigment comprising as the substrate doped or undoped glass flakes or mixtures thereof.

15. In paint, lacquer, ink, printing ink, plastic or cosmetic formulation comprising a filler pigment, the improvement wherein the filler pigment is one according to claim 13.

16. A cosmetic formulation containing a filler pigment of claim 13, in an amount of up to 95% by weight.

17. The cosmetic formulation according to claim 16, further comprising at least one absorbent, astringent, antimicrobial substance, antioxidant, antiperspirant, antifoaming agent, antidandruff active ingredient, antistatic, binder, biological additive, bleaching agent, chelating agent, deodorant, emollient, emulsifier, emulsion stabilizer, dye, humectant, film former, filler, odor imparting substance, flavorant, insect repellent, preservative, anticorrosion agent, cosmetic oil, solvent, oxidant, vege-table constituent, buffer substance, reducing agent, surfactant, propellant gas, opacifier, UV filter and UV absorber, denaturing agent, viscosity regulator, perfume or vitamin.

18. In paint, lacquer, ink, printing ink, plastic or cosmetic formulation comprising a filler pigment, the improvement wherein the filler pigment is one according to claim 14.

19. A cosmetic formulation containing a filler pigment of claim 14, in an amount of up to 95% by weight.

20. The cosmetic formulation according to claim 19, further comprising at least one absorbent, astringent, antimicrobial substance, antioxidant, antiperspirant, antifoaming agent, antidandruff active ingredient, antistatic, binder, biological additive, bleaching agent, chelating agent, deodorant, emollient, emulsifier, emulsion stabilizer, dye, humectant, film former, filler, odor imparting substance, flavorant, insect repellent, preservative, anticorrosion agent, cosmetic oil, solvent, oxidant, vege-table constituent, buffer substance, reducing agent, surfactant, propellant gas, opacifier, UV filter and UV absorber, denaturing agent, viscosity regulator, perfume or vitamin.

21. A filler pigment consisting of a platelet-shaped substrate coated with barium sulfate and at least two metal oxides and/or metal hydroxides of the following layer structure: substrate+SnO.sub.2+TiO.sub.2+BaSO.sub.4 substrate+mixture of SnO.sub.2+TiO.sub.2+BaSO.sub.4 substrate+mixture of SnO.sub.2+TiO.sub.2+BaSO.sub.4+layer of SiO.sub.2 on top substrate+SiO.sub.2+TiO.sub.2+BaSO.sub.4 substrate+SiO.sub.2+SnO.sub.2+BaSO.sub.4 substrate+SnO.sub.2+TiO.sub.2+BaSO.sub.4+Carmine red substrate+SnO.sub.2+TiO.sub.2+BaSO.sub.4+Prussian Blue substrate+SnO.sub.2+BaSO.sub.4/TiO.sub.2 substrate+SnO.sub.2+TiO.sub.2+BaSO.sub.4+SiO.sub.2 substrate+BaSO.sub.4+SnO.sub.2+TiO.sub.2+SiO.sub.2 substrate+Al.sub.2O.sub.3+BaSO.sub.4+SnO.sub.2+SiO.sub.2 substrate+ZnO+Al.sub.2O.sub.3+BaSO.sub.4+SiO.sub.2 substrate+Al.sub.2O.sub.3+BaSO.sub.4+SnO.sub.2 or substrate+ZnO+Al.sub.2O.sub.3+BaSO.sub.4.

Description

EXAMPLES

Example

Mica+BaSO.SUB.4.+SnO.SUB.2.+TiO.SUB.2

[0081] 41.9 g BaCl.sub.2 are dissolved in a suspension of 100 g muscovite mica (<15 m) in 1400 g of deionized water and heated up to 75 C. while stirring. Subsequently, 280 g of a sodium sulfate solution (10 wt.-% of Na.sub.2SO.sub.4) are added with a dosing rate of 5 ml/minute.

[0082] After adjusting the pH to 1.8 by addition of hydrochloric acid (10 wt.-% of NCI) a solution of 11.7 g hydrochloric acid (37 wt.-% of NCI) and 18 g tin chloride solution (50 wt.-% of SnCl.sub.4) in 296 g deionized water is added during 60 minutes. Subsequently, 371 g of titanium tetrachloride solution (32 wt.-% TiCl.sub.4) are added with a dosing rate of 1.5 ml/min. During the addition of the tin chloride and titanium chloride solutions the pH is maintained by simultaneous addition of sodium hydroxide solution (32 wt.-% NaOH). After the addition of the titanium chloride solution the pH is elevated to 5.0 with sodium hydroxide solution and stirred for more 15 min.

[0083] For work up the product is isolated by filtration and washing with 10 l of deionized water and drying at 110 C. for 12 hours. Finally the product is calcined at 850 C. and sieved through a 40 m sieve.

[0084] The obtained cosmetic filler exhibits bright powder color and an excellent skin feeling.

Use Examples

Use Example

Face Powder

[0085]

TABLE-US-00001 Ingredients INCI % Phase A Silk Mica (1) MICA 8.00 Filler pigment according (1) 8.00 to Example 1 Ronasphere LDP (1) SILICA, CI 77891 5.00 (TITANIUM DIOXIDE), CI 77491 (IRON OXIDES) Eusolex T-S (1) TITANIUM DIOXIDE, 5.00 ALUMINA, STEARIC ACID Unipure Yellow LC 182 (2) CI 77492 (IRON OXIDES) 1.20 Unipure Red LC 381 (2 CI 77491 (IRON OXIDES) 0.20 Unipure Brown LC 889 (2) CI 77491 (IRON OXIDES), 0.30 CI 77499 (IRON OXIDES) Magnesium stearate (1) MAGNESIUM STEARATE 2.00 Talc (1) TALC 65.90 Phase B RonaCare Tocopherol (1) TOCOPHERYL ACETATE 0.30 Acetate Fragrance 200 529 (3) PARFUM 0.30 Eutanol G (4) OCTYLDODECANOL 3.70 Propyl-4- (1) PROPYLPARABEN 0.10 hydroxybenzoate

Procedure:

[0086] Grind the ingredients of phase A until the blend is uniform. Then add the pre-dissolved phase B and grind again until the whole phase NB is uniform. Fill the bulk into pans and press with the desired pressure. The pressure for pans with 36 mm diameter is approx. 25 bar.

[0087] The obtained face powder is a light and transparent formula. Silk Mica delivers more smoothness to the texture while the filler pigment according to Example 1 and the Ronasphere LDP are responsible for a subtle mattifying and light reflecting effect.

Suppliers:

(1) Merck KGaA/Rona

(2) Les Colorants Wackherr

(3) Fragrance Resources

(4) Cognis GmbH

[0088] The entire disclosure[s] of all applications, patents and publications, cited herein and of corresponding European patent application No. 07024443.9, filed Dec. 17, 2007, is incorporated by reference herein.

[0089] The preceding examples can be repeated with similar success by substituting the generically or specifically described reactants and/or operating conditions of this invention for those used in the preceding examples.

[0090] From the foregoing description, one skilled in the art can easily ascertain the essential characteristics of this invention and, without departing from the spirit and scope thereof, can make various changes and modifications of the invention to adapt it to various usage and conditions.