| 主权项 |
1. An aqueous pigment dispersion comprising a dispersed pigment, an aqueous carrier and a polymeric dispersant; wherein said polymeric dispersant is a random or structured polymer and comprising at least three monomers A, B and C; wherein monomer A is a hydrophobic acrylate monomer, monomer B is a hydrophilic acrylic monomer, and monomer C is an acrylate monomer with the O atom on the ester bonding, either directly or via a linking group containing 1-10 carbon atoms, to a carbon or heteroatom of a monocylic or bicyclic heterocycle containing N, S or O atoms on the ring, wherein said heterocycle is selected from the group consisting of imidazole, imidazolidinone, oxazolidinone, thiazolidinone, benzotriazole, benzimidazole, triazole, benzotriazole, thiazole, benzothiazole, pyrimidine, pyridazine and glycoside, and wherein the carbon atoms on the ring of said heterocycle are optionally substituted with one or more R1, OR2, SR2 or NR3R4, and the N atom or atoms on the ring of said heterocycle are optionally substituted with R1 or —R5OR2;
each R1 is independently C1-C20 alkyl, C3-C20 cycloalkyl or C6-C40 aryl; each R2 is independently C1-C20 alkyl, C3-C20 cycloalkyl or C6-C40 aryl; and each R3 and R4 are independently H, C1-C20 alkyl, C3-C20 cycloalkyl or C6-C40 aryl; and each R5 is C1-C5 alkyl. |
