Inventors:
Lawrence Lu Kuo - Columbia MD
Roger Yiming Leung - Ellicott City MD
Kenneth Samuel Williams - Baltimore MD
Assignee:
BetzDearborn Inc. - Trevose PA
International Classification:
C08F 2054
Abstract:
A water-soluble cationic copolymer comprising a reaction product of N-vinylamide having the general formula: ##STR1## and a cationic quaternary amine having the formula: ##STR2## wherein Y is C(. dbd. O)O(CH. sub. 2). sub. n N. sup. sym. R. sup. 4 R. sup. 5 R. sup. 6 X. sup. crclbar. , or ##STR3## X. sup. crclbar. ,n is 1 to 5; R. sup. 1, R. sup. 2, R. sup. 3 are independently H or C. sub. 1 to C. sub. 3 alkyl, R. sup. 4, R. sup. 5, and R. sup. 6 are independently C. sub. 1 to C. sub. 3 alkyl, X is a halide, hydroxyl or alkylsulfate anion.
The copolymers of this invention are useful as flocculating agents, and are particularly useful as drainage/retention aids in pulp and papermaking operations.