| abstract |
A composition comprising a particulate solid, an organic medium, and a dispersant comprising a polyacrylic acid copolymer functionalized with polyether and reacted with an amine-based polybasic species. Reacts with a dispersed particulate solid (typically a pigment or filler), an organic continuous medium (typically the organic medium can be a plastic material or an organic liquid), and an amine-based polybasic species Wherein the polyacid species comprises 10 to 500 repeating units, wherein the polyacid comprises a carboxylic acid, a dicarboxylic acid, It contains at least two free acid groups selected from the class consisting of anhydrides, sulfur or phosphorus derived acids and their salts. |