Patent ID: 7629427

Claim:
A polymer-containing composition comprising a block polymer compound, water or an aqueous solvent, and a functional material, wherein the block polymer compound comprises block segments A, B, and C arranged in succession, the block segment B is a hydrophilic block segment, the block segment C is most hydrophilic while the block segment A is most hydrophobic, the block segment C has an ionic group or an acidic group, and the block segment C is a repeating unit represented by the following general formula (1): wherein R 0 represents —X—(COOH) r or —X—(COO-M) r ; X represents a linear, branched or cyclic alkylene group with 1 to 20 carbon atoms, —(CH(R 5 )—CH(R 6 )—O) p —(CH 2 ) m —CH 3-r —, —(CH 2 ) m —(O) n —(CH 2 ) q —CH 3-r — or a structure in which at least one of methylene groups therein is replaced by a carbonyl group or an aromatic ring structure; r represents 1 or 2; p represents an integer from 1 to 18; m represents an integer from 0 to 35; n represents 1 or 0; q represents an integer from 0 to 17; M represents a monovalent or polyvalent cation; and R 5 and R 6 , which may be the same or different, each independently represent an alkyl group, wherein the block segment B is a repeating unit represented by either one of the following formulae: wherein the block segment A is a repeating unit represented by any of the following formulae: (a) (b) and wherein when the block segment A is the repeating unit represented by formula (b), the block segment B is the repeating unit represented by