| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a polymer flocculant excellent in strength of a flock while maintaining solubility to water. <P>SOLUTION: The polymer flocculant (X) includes a water-soluble copolymer (A) that performs the reverse phase suspension polymerization of a polymerizable monomer that includes a water-soluble univalent unsaturated monomer (a) and a multivalent unsaturated monomer (b) shown by the following general formula (1): (CH<SB POS="POST">2</SB>=CR<SP POS="POST">1</SP>COO)<SB POS="POST">n</SB>-Z. In the formula (1), R<SP POS="POST">1</SP>denotes H or a methyl group, n denotes an integer of at least 2, and Z denotes an n-valent 4-50C (poly)ether group and/or 4-800C (poly)siloxane group. <P>COPYRIGHT: (C)2012,JPO&INPIT |
