Patent Number: 6,294,615

Title: Copolymer, cationic high molecular weight flocculating agent comprising thecopolymer, and process for producing the copolymer

Abstract: A copolymer which can provide an aqueous solution thereof having highviscosity, a cationic high molecular weight flocculating agent comprisingthe copolymer and a process for producing the copolymer. The copolymer isformed by a process where copolymer units necessary to form the copolymerare reacted with a polyamine in the presence of ammonium chloride and/or ahydrochloride of an amine. The copolymer has units represented by thefollowing formulae (1) and (2) where substituents are defined in thespecification:##STR1##The copolymer has a Brookfield viscosity as a 1 wt % aqueous solutionthereof of 10 to 10,000 centipoise.

Inventors: Higashino; Toshiya (Aichi, JP), Inoue; Hiroshi (Mie, JP)


International Classification:

Expiration Date: 09/25/2013