Patent ID: 8268925

Claim:
A composition comprising a particulate solid, a carrier liquid and a graft copolymer of Formula (1): wherein R 1 is a CH 3 or H group; A is a moiety which contains at least one tertiary amine group; A* is a quaternised amine-containing moiety; B is a moiety that contains at least one polyester chain with a number average molecular weight of at least 200; C is a moiety that does not contain a reactive functional group; D is a moiety which contains at least one reactive functional group or polar group; J, K, L, M and N are the average (non-negative) number of repeating units containing the moieties A, A*, B, C, and D respectively within the graft copolymer; J is optionally equal to 0; K is not equal to 0; L is not equal to 0; M is optionally equal to 0; N is optionally equal to 0; and wherein the graft copolymer of Formula 1 is characterized as a (meth)acrylic graft copolymer derived from a dialkylaminoalkyl (meth) acrylate, or mixtures thereof.