| abstract |
(57) [Summary] [Purpose] To develop a pigment dispersant that has excellent dispersibility, has a high compatibility with a vehicle for paints, gives an excellent coating film appearance, and has adhesion to a metal surface. A pigment dispersant comprising a lactone-modified amine compound obtained by reacting a carboxyl group-terminated polyester obtained by copolymerizing a hydroxycarboxylic acid and a lactone compound with a polyalkylene polyamine compound. [Effect] It was possible to develop a pigment dispersant which has excellent dispersibility, has a high compatibility with a vehicle for paints, gives an excellent coating film appearance, and has adhesion to a metal surface. |