| abstract |
The present invention polymerizes monomers (A), (B), (C) and (D) to give a nonionic copolymer having a reactive terminal OH-group and subsequently the terminal OH-group Is an anionically modified copolymer obtainable by converting to an anionic end group, wherein (A) is a monomer represented by the following formula (I): [Chemical 1] (Wherein A represents C 2 -C 4 alkylene, B represents C 2 -C 4 alkylene different from A, and R represents hydrogen or methyl); II) a monomer represented by [Chemical 2] (D represents C 3 alkylene, R represents hydrogen or methyl, and o is a number from 2 to 500); (C) is an ethylenically unsaturated monomer containing an aromatic group; (D) relates to the above copolymer, which is an ethylenically unsaturated monomer containing an alkyl residue. |