| abstract |
A modified pigment that may include a polymer. The pigment may be directly attached to a nitrogen atom. The nitrogen atom may be attached directly or indirectly to a group that may include -S-Z. S may be a substituted or unsubstituted alkyl group, substituted or unsubstituted aromatic group, or polymer chain having a molecular weight range from about 300 to about 20000. Z may be a hydrogen, carboxyl, sulfonyl, phenolic, phosphoryl, ammonium, trimethylammonium, or tributylammonium group. Also, a modified pigment that may include a polymer. The pigment may be attached to an organic group through a carbon atom that is part of a N-C=N bond. A cosmetic formulation that may include a pigment covalently bonded to an organic group. |