Patent ID: 9018302
Filing Date: 2015-04-28
Classification: B01F,C09D

Abstract:
1. A composition comprising particulate solid selected from a pigment or a filler, an organic medium selected from a plastics material or an organic liquid and a polyacrylic-acid-containing copolymer comprising the general formula; wherein; R R A is independently B, D or E; B is —CO D is —CO—X-Q; E is —COO j, k and l are the average number of repeating units within the graft copolymer j must be greater than 2 k is 0 when l=1 or greater than 1, or k is 1 or greater than 1 l is 0 when k=1 or greater than 1, or l is 1 or greater than 1 X is O— or NH—; Q is —(CHR R n is 3-45 R Y is an alkali metal, an alkaline earth metal, an ammonium salt derived from ammonia, an amine, an alkanolamine or a mixture thereof, wherein the polyacrylic-acid-containing copolymer comprises repeat units j+k, j+l or j+k+l whereby the copolymer must comprise j and have at least one repeat unit where A=B, at least one repeat unit A=D and at least one repeat unit where A=E.