Patent ID: 7442753
Filing Date: 2008-10-28
Classification: C07C,C08F,C08L,C09D,G03G

Abstract:
1. A polymer compound having a repeating unit structure represented by the following general formula (2): wherein A′ represents a polyalkenyl ether group which may be substituted; B represents a linear or branched alkylene group having 1 to 15 carbon atoms which may be substituted; m represents an integer from 0 to 30; when m is larger than 1, B may be different from each other; D represents a single bond or a linear or branched alkylene group having 1 to 10 carbon atoms which may be substituted; E represents any one of an aromatic ring which may be substituted, a condensed ring which may be substituted, and a structure formed by bonding through single bonds at most three aromatic rings which may be substituted; R 1 represents —COOH, —COOR 4 , or —COO − M; R 4 represents a linear or branched alkyl group having 1 to 5 carbon atoms which may be substituted or an aromatic ring which may be substituted; M represents a monovalent or polyvalent metal cation; n represents a positive number larger than 1; an R 1 group in the formula is substituted into the aromatic ring of E; and a hydrogen atom in the aromatic ring, which is not substituted with R 1 , may be substituted, wherein the polymer compound comprises as a copolymer composition a repeating unit structure having a polycarboxylic acid represented by the general formula (2) on a side chain and a repeating unit structure having a monocarboxylic acid represented by the following general formula (9) on a side chain: wherein A′ represents a polyalkenyl ether group which may be substituted: B′ represents a linear or branched alkylene group having 1 to 15 carbon atoms which may be substituted; m represents an integer from 0 to 30; when m is larger than 1, B′ may be different from each other; D′ represents a single bond or a linear or branched alkylene group having 1 to 10 carbon atoms which may be substituted; E′ represents any one of an aromatic ring which may be substituted, a condensed ring which may be substituted, a structure formed by bonding through single bonds at most three aromatic rings which may be substituted, and a methylene group; R 2 represents —COOH, —COOR 3 , or —COO − M; R 3 represents a linear or branched alkyl group having 1 to 5 carbon atoms which may be substituted or an aromatic ring which may be substituted; M represents a monovalent or polyvalent metal cation; an R 2 group in the formula is substituted for a hydrogen atom in the aromatic ring or the methylene group of E′; and a hydrogen atom in the aromatic ring or the methylene group, which is not substituted with R 2 , may be substituted.