| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a flame retardant composed of acrylamide-based polymer having a high electrolytic group density. <P>SOLUTION: The flame retardant is a copolymer of (1) an acrylamidealkanesulfonate expressed by a formula (1) (wherein R<SP>1</SP>is a hydrogen or methyl group, R<SP>2</SP>and R<SP>3</SP>are hydrogen or 1-3C alkyl groups, R<SP>4</SP>is a 1-3C alkylene group, and M<SP>1</SP>is a hydrogen group, metal, or tertiary amine residue), and (2) an unsaturated compound (a) which has one or more ethylene-based unsaturated bonds but does not have any acid groups in a molecule, an unsaturated compound (b) which has one or more ethylene-based unsaturated bonds and one or more acid groups in a molecule, or their mixture. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
