Patent ID: 9416280
Filing Date: 2016-08-16
CPC Classification: C08F,C09D

Claim Text:
1. A paint or ink composition comprising a particulate solid, wherein the particulate solid is a pigment, an organic medium, and a dispersant copolymer having a number average molecular weight of 1000 to 50,000 derived from (a) 85 mol % to 99.9 mol % of monomer (A) comprising an α-olefin or vinyl aromatic monomer or mixtures thereof, and (b) 0.1 to 15 mol % of monomer (B) comprising a dicarboxylic acid or anhydride thereof, wherein said copolymer has anhydride or dicarboxylic acid groups derived from monomer (B), wherein at least a portion of the anhydride or dicarboxylic acid groups derived from monomer (B) are subsequently to forming said copolymer reacted with: (i) a compound containing at least one tertiary or heterocyclic amine and at least one additional group capable of reacting with dicarboxylic acid, or anhydride functional groups, wherein at least 10% of the monomer (B) groups react with said compound containing the at least one tertiary or heterocyclic amine and (ii) a monofunctional polyetheramine, wherein at least 10% of the monomer (B) groups are reacted with said polyetheramine.