Pigment mixtures

Abstract

Disclosed are pigment mixtures containing at least two components, where component A contains bismuth oxychloride (BiOCl) or boron nitride (BN) and component B contains synthetic flakes treated with at least one metal soap or mineral flakes treated with at least one metal soap and to the use thereof especially in cosmetic formulations.

Claims

1. A pigment mixture comprising at least two components, where component A comprises: i) optionally coated bismuth oxychloride (BiOCl) or optionally coated boron nitride (BN) in the particle size range of 1-40 m and component B comprises: ii) synthetic flakes or mineral flakes in the particle size range of 1-100 m, wherein a metal soap has been intimately deposited onto the surface of said synthetic flakes or mineral flakes, wherein said metal soap is an alkaline earth metal stearate or branched or non-linear isostearate, zinc stearate, aluminum stearate or a mixture thereof, and wherein component B excludes optionally coated bismuth oxychloride (BiOCl) and optionally coated boron nitride (BN) and, wherein i) and ii) have been blended in a ratio of 10:90 to 90:10 by weight and form an intimate comingling, and wherein the amount of metal soap on the surface of the mineral or synthetic flakes is 0.1-10 wt. % based on the total weight of mineral or synthetic flakes.

2. A pigment mixture according to claim 1, wherein component A is bismuth oxychloride (BiOCl).

3. A pigment mixture according to claim 1, wherein component B comprises synthetic flakes which are mica, silica, alumina, borosilicate, and/or aluminosilicate.

4. A pigment mixture according to claim 1, wherein component B comprises mineral flakes which are of mica, clay, talc and/or kaolin.

5. A pigment mixture according to claim 1, wherein component B comprises natural or synthetic mica flakes treated with a metal soap wherein said metal soap is an alkaline earth metal stearate or branched or non-linear isostearate, zinc stearate, aluminum stearate or a mixture thereof.

6. A pigment mixture according to claim 1, wherein the synthetic or mineral flakes are wet ground natural muscovite mica with particle size 2-19 m, or synthetic mica with particle size 5-25 m.

7. A pigment mixture according to claim 1, wherein the metal soap is an alkaline earth metal branched or non-linear isostearate.

8. A pigment mixture according to claim 1, wherein metal soap is an alkaline earth metal stearate which is magnesium stearate, barium stearate, or calcium stearate or a mixture thereof.

9. A pigment mixture according to claim 1, wherein component B comprises natural or synthetic mica flakes treated with magnesium stearate or zinc stearate.

10. A pigment mixture according to claim 1, wherein i) and ii) are mixed in a ratio of 30:70 to 70:30 by weight.

11. A pigment mixture according to claim 1, further comprising another powder, a cosmetic grade of zinc oxide, titanium dioxide, iron oxide, ultramarine pigments, manganese violet, carmine, chromium oxide green, iron blue or organic pigments, a FD&C or D&C colorant.

12. A pigment mixture according to claim 1, comprising by weight % 68.6% synthetic or natural mica and 1.4% magnesium stearate as component B, and 30% BiOCl as component A; or 68.6% synthetic or natural mica and 1.4% magnesium stearate as component B, and 15% BiOCl as component A, and 15% zinc oxide; or 68.6% synthetic or natural mica and 1.4% magnesium stearate as component B, and 25% BiOCl as component A, and 5% zinc oxide; or 49% synthetic or natural mica and 1% magnesium stearate as component B, and 50% BiOCl as component A; or 49% synthetic or natural mica and 1% magnesium stearate as component B, and 45% BiOCl as component A, and 5% zinc oxide.

13. A pigment mixture according to claim 1, further comprising at least one constituent selected from the group consisting of absorbents, astringents, antimicrobial substances, antioxidants, antiperspirants, antifoaming agents, antidandruff active ingredients, antistatics, binders, biological additives, bleaching agents, chelating agents, deodorants, emollients, emulsifiers, emulsion stabilisers, dyes, humectants, film formers, fillers, odour substances, flavour substances, insect repellents, preservatives, anticorrosion agents, cosmetic oils, solvents, oxidants, vegetable constituents, buffer substances, reducing agents, surfactants, propellant gases, opacifiers, UV filters and UV absorbers, denaturing agents, viscosity regulators, perfume and vitamins.

14. A process for preparing a pigment mixture according to claim 1, comprising blending component A and component B and optionally further constituents, or mixing component A and mineral or synthetic flakes and the metal soap and optionally further constituents as a suspension in water and then dewatering and drying the suspension.

15. A cosmetic composition comprising a pigment mixture according to claim 1 and a cosmetically acceptable carrier.

16. A pigment mixture comprising at least two components, where component A comprises: i) optionally coated bismuth oxychloride (BiOCl) or optionally coated boron nitride (BN) and component B comprises: ii) synthetic flakes or mineral flakes in the particle size range of 1-100 m, wherein a metal soap has been intimately deposited onto the surface of said synthetic flakes or mineral flakes, which metal soap is an alkaline earth metal stearate or branched or non-linear isostearate, zinc stearate, aluminum stearate or a mixture thereof, wherein i) and ii) are mixed in a ratio of 10:90 to 90:10 by weight, and wherein said synthetic flakes or mineral flakes are wet ground mica, and wherein the amount of metal soap on the surface of the mineral or synthetic flakes is 0.1-10 wt. % based on the total weight of mineral or synthetic flakes.

17. A pigment mixture according to claim 1, which contains uncoated bismuth oxychloride (BiOCl) or uncoated boron nitride (BN).

18. A pigment mixture consisting of two components, where component A consists of bismuth oxychloride (BiOCl) or boron nitride (BN) and component B consists of synthetic flakes or mineral flakes in the particle size range of 1-100 m, wherein a metal soap has been intimately deposited onto the surface of said synthetic flakes or mineral flakes, which metal soap is an alkaline earth metal stearate or branched or non-linear isostearate, zinc stearate, aluminum stearate or a mixture thereof, wherein component A and component B are mixed in a ratio of 10:90 to 90:10 by weight, and wherein the amount of metal soap on the surface of the mineral or synthetic flakes is 0.1-10 wt. % based on the total weight of mineral or synthetic flakes.

Description

EXAMPLES

Example 1: Treatment of Natural Mica

(1) Wet ground natural muscovite mica of particle size 2-19 m of quantity 200 g is suspended at approximately 10% by stirring in deionized water at 65 C. Sodium stearate (Brenntag) of 4.0 g quantity, enough to form 2% magnesium stearate is delivered and dissolved. Subsequently 1.3 g magnesium chloride (hexahydrate) is delivered. The suspension of precipitated magnesium stearate can be elutriated with deionized water to remove sodium chloride salts by sedimentation and or filtration and then the wet mixture is dried and the product is ready for blending.

(2) The treated natural mica exhibits a very good skin feel.

Example 2: Treatment of Synthetic Mica

(3) The method employed in example 1 is repeated except in place of natural mica, synthetic mica of particle size 5-25 m is employed.

(4) The treated synthetic mica exhibits a very good skin feel.

Example 3: Mixture of 49% Synthetic Mica/50% BiOCl/1% Magnesium Stearate

(5) A mica treated as per Example 2 is blended at equal weight with a cosmetic grade BiOCl in a laboratory blender (Waring or Oster).

Example 4: Mixture of 68.6% Synthetic Mica/15% BiOCl/15% ZnO/1.4% Magnesium Stearate

(6) A mica treated as per Example 2 is blended at 70% per total weight along with 15% of a cosmetic grade BiOCl and 15% of a cosmetic grade zinc oxide in a laboratory blender (Waring or Oster).

USE EXAMPLES

Use Example 1: Loose Powder Eye Shadow

(7) TABLE-US-00001 Manufac- Phase Ingredient Composition turer % A BiOCl/mica mixture 40.00 according to Example 3 Colorona Copper Mica, iron oxide (1) 30.00 Fine Supra H Talc (2) 16.90 Zea Mays (Corn) Corn Starch (3) 7.00 Starch Propylparaben Propylparaben (4) 0.10 B Pelemol OP Octyl Palmitate (5) 6.00
Preparation:

(8) Mix the ingredients of Phase A homogeneously. Add Phase B with stirring.

(9) Sources of Supply:

(10) (1) Merck KGaA

(11) (2) Luzenac

(12) (3) Argo Brand Corn Starch/Corn Products

(13) (4) Spectrum Chemical

(14) (5) Phoenix Chemical

Use Example 2: Mineral Make-Up

(15) TABLE-US-00002 Manufac- Phase Ingredient Composition turer % A BiOCl/mica mixture 48.00 according to Example 3 SunChroma Brown Iron oxides (1) 12.00 RonaFlair Low Mica, barium sulfate (2) 22.00 Luster and titanium dioxide RonaFlair MTU Bismuth oxychloride (2) 10.00 RonaFlair LDP Silica, titanium (2) 5.00 dioxide and iron oxides Colorona Oriental Mica, titanium (2) 3.00 Beige dioxide and iron oxides
Preparation:

(16) Mix the ingredients of Phase A homogeneously.

(17) Sources of Supply:

(18) (1) Sun Chemical

(19) (2) Merck KGaA

Example 3: Eye Pencil

(20) TABLE-US-00003 Manufac- Phase Ingredient Composition turer % A Supra H Talc (1) 11.30 Syncrowax ERL-C C18-36 Ethylene (2) 8.10 Glycol Ester Syncrowax HR-C Glyceryl (2) 1.90 Tribehenate Pelemol OP Ethyl Hexyl (3) 38.40 Palmitate Myritol 318 Caprylic/Capric (4) 4.00 Triglyceride Emersol 120 Stearic Acid (4) 3.00 Emerest 2452 Polyglyceryl 3- (4) 0.50 Diisostearate Methylparaben Methylparaben (5) 0.20 Propylparaben Propylparaben (5) 0.10 B BiOCl/mica mixture 15.00 according to Example 3 Colorona Bordeaux Iron oxide, mica (6) 16.00 Colorona Mica Black Iron oxide, mica (6) 1.50
Preparation:

(21) Combine all ingredients in Phase A and heat to 80-85 C. with stirring until homogenous. Add Phase B ingredients. Agitate with a high-speed mixer until no agglomerates remain. Pour at 70 C.

(22) Sources of Supply:

(23) (1) Luzenac

(24) (2) Croda

(25) (3) Phoenix Chemical

(26) (4) Cognis

(27) (5) Spectrum Chemical

(28) (6) Merck KGaA

Example 4: Pressed Eye Shadow

(29) TABLE-US-00004 Manufac- Phase Ingredient Composition turer % A Supra H Talc (1) 35.50 Dry Flo PC Aluminum Starch (2) 7.00 Octenyl Succinate Magnesium Stearate Magnesium Stearate (3) 2.00 Vegetable F.G. B BiOCl/mica mixture 15.00 according to Example 3 Colorona Majestic Titanium dioxide, (4) 22.00 Green mica, and chromium oxide greens Colorona Dark Blue Titanium dioxide, (4) 8.00 mica and ferric ferrocyanide C Lexol 3975 Isopropyl palmitate, (5) 9.20 isopropyl myristate and isopropyl stearate Cutina CP Cetyl palmitate (6) 0.60 Snow White Petrolatum (7) 0.60 Petrolatum Propylparaben Propylparaben (8) 0.10
Preparation:

(30) Combine ingredients in Phase A. Pulverize with a hammer mill, passing twice through a 0.027 herring bone screen. Add Phase B with gentle agitation. Combine Phase C with mixing; heat to 70 C. Spray Phase C onto batch while agitating bulk. Pass entire batch through a jump gap. Mix gently and press into disks.

(31) Sources of Supply:

(32) (1) Luzenac

(33) (2) National Starch & Chemical

(34) (3) Brenntag BSI

(35) (4) Merck KGaA

(36) (5) Inolex

(37) (6) Cognis

(38) (7) Penreco

(39) (8) Spectrum Chemical

Example 5: Creamy Eye Shadow

(40) TABLE-US-00005 Manufac- Phase Ingredient Composition turer % A Colorona Dark Blue TiO.sub.2, mica, iron blue (1) 10.00 Timiron Supersheen TiO.sub.2, mica (1) 10.00 MP-1001 BiOCl/mica mixture (1) 10.00 according to Example 3 Talcum Talc (1) 10.00 B Crodamol PMP PEG-2 Myristyl (2) 32.90 Ether Propionate Syncrowax HGLC C18-36 Acid (2) 10.00 Triglyceride Syncrowax HRC Tribehenin (2) 3.00 Miglyol 812 neutral oil Caprylic/Capric (3) 9.00 Triglyceride Stearic acid Stearic Acid (1) 3.00 Antaron V-216 PVP/Hexadecene (4) 2.00 Copolymer Oxynex K liquid Tocopherol, (1) 0.10 Ascorbyl Palmitate, Ascorbic Acid, Citric Acid, PEG-8 Preservative Propylparaben q.s.
Preparation:

(41) Heat phase B at about 80 C. until everything has melted, and cool to 65 C. The constituents of phase A are then added with stirring, and the finished eye shadow is packed while still liquid.

(42) Sources of Supply:

(43) (1) Merck KGaA

(44) (2) Croda

(45) (3) Hls AG

(46) (4) ISP Europe

Example 6: Lip Powder

(47) TABLE-US-00006 Manufac- Phase Ingredient Composition turer % A Colorona Bordeaux Iron oxide, mica (1) 30.00 BiOCl/mica mixture (1) 25.00 according to Example 4 Talcum Talc (1) 30.00 B Isopropyl stearate Isopropyl Stearate (2) 11.20 Dow Corning 1403 Dimethicone, (3) 3.80 fluid Dimethiconol Perfume oil q.s. Preservative Propylparaben q.s.
Preparation:

(48) Combine and pre-mix the constituents of phase A. Subsequently add the molten phase B dropwise to the powder mixture with stirring. The powders are pressed at 40-50 bar.

(49) Sources of Supply:

(50) (1) Merck KGaA

(51) (2) Henkel KGaA

(52) (3) Dow Corning

(53) Without further elaboration; it is believed that one skilled in the art can, using the preceding description, utilize the present invention to its fullest extent. The preceding preferred specific embodiments are, therefore, to be construed as merely illustrative, and not limitative of the remainder of the disclosure in any way whatsoever.

(54) In the foregoing and in the examples, all temperatures are set forth uncorrected in degrees Celsius and, all parts and percentages are by weight, unless otherwise indicated.

(55) The entire disclosures of all applications, patents and publications, cited herein and U.S. Provisional Application Ser. No. 61/178,762, filed May 5, 2009, are incorporated by reference herein.

(56) 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.

(57) 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 usages and conditions.