Patent ID: 6369214
Filing Date: 2002-04-09
Classification: B01F,C08B,C08K,C09D

Abstract:
A method of dispersing a pigment in a resin, comprising providing at least one amine functional cellulose ester resin comprising at least one repeating unit of the structure: wherein R1, R2, and R3 arc selected independently from the group consisting of hydrogen, R4C&boxH;O, and whereinat least one of R1, R2, and R3 is hydrogen, at least one of R1, R2, and R3 is R4C&boxH;O, and at least one of R1, R2, and R3 is R4 is selected from the group consisting of C4-C20 alkyl groups, C1-C20 phenyl groups, C1-C20 napthyl groups, and C1-C20 alkenyl groups, R6 is selected from the group consisting of H and groups having at least one secondary amine group, tertiary amino group, and mixtures thereof, and L is a divalent linking group having from 1 to 20 carbons atoms and from 0 to 10 heteroatoms selected from the group consisting of oxygen, nitrogen, and mixtures thereof, and subjecting at least one pigment to an action to reduce the average particle size of the pigment in the presence of said at least one amine functional cellulose ester resin.