abstract |
(57) [Summary] [Purpose] To improve the solubility of amphoteric polymer flocculants in water and the stability of the solution over time. [Structure] An amphoteric amphoter composed of a cationic monomer unit, an anionic monomer unit, a nonionic monomer unit and a cationic monomer unit represented by Chemical formula 1, and containing 5 to 30 mol% of the cationic monomer unit represented by Chemical formula 1. Polymer flocculant. Embedded image |