Deposition of materials to surfaces using zwitterionic carrier particles
AssigneeLever Brothers Company, Division of Conopco, Inc.
InventorsPonisseril Somasundaran, Kavssery P. Ananthapadmanabhan, Mitsuko Fujiwara, Liang S. Tsaur
Life of this patent
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Abstract
Compositions to deposit an active substance on a target surface (i.e. fabric, sun, hair, teeth). The active substance is left on the surface, after the product is rinsed off the surface. The preferred deposition is from compositions containing an anionic or nonionic active in the co-presence of an anionic surfactant. The compositions contain carrier particles having a zwitterionic or cationic surface and a plurality of outwardly protruding filaments containing charged organocarbyl groups. The active substance is contained within the carrier particles.
Claims16
A composition for depositing active substances onto a target surface, the composition comprising
- (i) from about 0.1% to about 50% of carrier particles:
- with a zwitterionic surface, the surface having a plurality of outwardly protruding filaments containing positively charged organocarbyl groups selected from the group consisting of primary amine, secondary amine, tertiary amine, quaternary ammonium salts, amidines, pyridinium salts and mixtures thereof
- and a plurality of outwardly protruding filaments containing negatively charged organocarbyl groups selected from the group consisting of sulfate, sulfonate, carboxylate, phosphate groups, and mixtures thereof, wherein the positively charged groups and the negatively charged groups are located on different filaments;
- (ii) from about 0.01% to about 50% of an active substance within said particle, wherein the active substance is a cosmetic active,
- (iii) from about 1% to about 99% by weight of the composition of an anionic surfactant.
A composition for depositing active substances onto a negatively charged target surface, the composition comprising
- (i) from about 1% to about 99% by weight of the composition;
- (a) particles with a zwitterionic surface, the surface having a plurality of outwardly protruding filaments containing positively charged organocarbyl groups selected from the group consisting of primary amine, secondary amine, tertiary amine, quaternary ammonium salts, amidines, pyridinium salts and mixtures thereof
- and a plurality of outwardly protruding filaments containing negatively charged organocarbyl groups selected from the group consisting of surfate, sulfonate, carboxylate, phosphate groups, and mixtures thereof wherein the positively charged groups and the negatively charged groups are located on different filaments;
- (ii) from about 0.01% to about 50% of an active substance within said particle. wherein the active substance is a cosmetic active;
- (iii) a cationic or an amphoteric polymer deposition aid,
- (iv) from about 1% to about 99% by weight of the composition of an anionic surfactant.
Dependencies are inferred from the claim text.