| abstract |
PURPOSE: To obtain the titled polymer of high molecular weight, useful as a flocculant outstanding in dehydrating characteristics, filterability, etc., by (co) polymerization between a vinyl monomer, its neutralized salt or its quaternary ammonium salt and a second vinyl monomer in specified proportion. n CONSTITUTION: The objective polymer with an average molecular weight ≥10 6 and water-insoluble gel content ≤50g/g can be obtained by (co)polymerization between (A) at least one kind of component selected from vinyl monomers of formula I (R 1 is H or CH 3 ; R 2 and R 3 are each 1W3C alkyl) (e.g., N,N- dimethylaminopropyl acrylamide), neutralized salts therefrom of formula II (X is anionic counter ion) and quaternary ammonium salts therefrom of formula III (R 4 is 1W4C alkyl or benzyl) and (B) a second vinyl monomer of formula IV in the molar ratio of 100/0W5/95. n COPYRIGHT: (C)1988,JPO&Japio |