WATER-SOLUBLE POLYMER, PROCESS FOR THE PRODUCTION OF THE SAME, AND USE THEREOF AS POLYMERIC COAGULANT

摘要

The object of the present invention is to provide a novel high-performance polymer which can be used as a high molecular weight flocculant in centrifugation or beltpress dewatering, for instance, to give a sufficient degree of dehydration. The present invention provides a water-soluble vinyl polymer (A) consisting essentially of constituent monomer units of a radical-polymerizable (meth)acrylic monomer (m), containing a primary amine salt group, said polymer (A) having colloid equivalent values a, b and c, at pH of 4, 7 and 10, respectively, providing the ratio of b/a in the range of 0.1 - 0.5 and the ratio of c/a in the range of 0 - 0.1.