Microcapsules comprising black pigments
First Claim
Patent Images
1. Monolayered microcapsules having a mean particle size within a range selected from about 1 to about 100 μ
- m, the microcapsules comprising a single core of a black pigment which is carbon black or a mixture of carbon black and black iron oxide, and a shell of a wall-forming polymeric material selected from poly(methyl methacrylate)-co-methacrylic acid, ammonium methacrylate copolymer type B, a cellulose ether, a cellulose ester, or a combination thereof, wherein the microcapsules do not contain a plasticizer, and further comprise one or more additives selected from the group consisting of hydrogenated polyisobutene and butylene glycol cocoate, and wherein the microcapsules have a black color,wherein the black pigment is carbon black, and the amount of carbon black in the microcapsules is within a range selected from about 80 to about 90% of the total weight of the microcapsules, or wherein the black pigment is a mixture of carbon black and black iron oxide, the ratio between the carbon black and black iron oxide in said mixture is in a range of from 1;
20 to 20;
1, respectively, and said black pigment is in an amount from about 80 to about 90% of the total weight of the microcapsules.
1 Assignment
0 Petitions
Accused Products
Abstract
Monolayered microcapsules comprising a black pigment and cosmetic formulations comprising them are provided for use particularly in mascara and eye liner formulations. The black pigment may be carbon black, black iron oxide, or both.
8 Citations
14 Claims
-
1. Monolayered microcapsules having a mean particle size within a range selected from about 1 to about 100 μ
- m, the microcapsules comprising a single core of a black pigment which is carbon black or a mixture of carbon black and black iron oxide, and a shell of a wall-forming polymeric material selected from poly(methyl methacrylate)-co-methacrylic acid, ammonium methacrylate copolymer type B, a cellulose ether, a cellulose ester, or a combination thereof, wherein the microcapsules do not contain a plasticizer, and further comprise one or more additives selected from the group consisting of hydrogenated polyisobutene and butylene glycol cocoate, and wherein the microcapsules have a black color,
wherein the black pigment is carbon black, and the amount of carbon black in the microcapsules is within a range selected from about 80 to about 90% of the total weight of the microcapsules, or wherein the black pigment is a mixture of carbon black and black iron oxide, the ratio between the carbon black and black iron oxide in said mixture is in a range of from 1;
20 to 20;
1, respectively, and said black pigment is in an amount from about 80 to about 90% of the total weight of the microcapsules. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- m, the microcapsules comprising a single core of a black pigment which is carbon black or a mixture of carbon black and black iron oxide, and a shell of a wall-forming polymeric material selected from poly(methyl methacrylate)-co-methacrylic acid, ammonium methacrylate copolymer type B, a cellulose ether, a cellulose ester, or a combination thereof, wherein the microcapsules do not contain a plasticizer, and further comprise one or more additives selected from the group consisting of hydrogenated polyisobutene and butylene glycol cocoate, and wherein the microcapsules have a black color,
-
13. Monolayered microcapsules having a mean particle size within a range selected from about 1 to about 100 μ
- m, the microcapsules comprising a single core of a black pigment which is carbon black, and a shell of a wall-forming polymeric material selected from a polyacrylate, a polymethacrylate, a cellulose ether, a cellulose ester, or a combination thereof, wherein the microcapsules do not contain a plasticizer, and wherein the microcapsules have a black color,
wherein the amount of carbon black in the microcapsules is within a range of from 80% to 90% of the total weight of the microcapsules, and wherein the microcapsules further comprise one or more additives selected from the group consisting of hydrogenated polyisobutene and butylene glycol cocoate.
- m, the microcapsules comprising a single core of a black pigment which is carbon black, and a shell of a wall-forming polymeric material selected from a polyacrylate, a polymethacrylate, a cellulose ether, a cellulose ester, or a combination thereof, wherein the microcapsules do not contain a plasticizer, and wherein the microcapsules have a black color,
-
14. Monolayered microcapsules having a mean particle size within a range selected from about 1 to about 100 μ
- m, the microcapsules comprising a single core of a black pigment which is carbon black, and a shell of a wall-forming polymeric material, wherein the microcapsules do not contain a plasticizer, and wherein the microcapsules have a black color,
wherein the amount of carbon black in the microcapsules is at least 81% of the total weight of the microcapsules, the wall-forming material is poly(methyl methacrylate) co-methacrylic acid in an amount of about 2% of the total weight of the microcapsules, and the microcapsules further comprise an additive which is butylene glycol cocoate, in an amount of about 10% of the total weight of the microcapsules.
- m, the microcapsules comprising a single core of a black pigment which is carbon black, and a shell of a wall-forming polymeric material, wherein the microcapsules do not contain a plasticizer, and wherein the microcapsules have a black color,
Specification