Water-soluble cationic copolymers and their use as flocculants a

Details Water-soluble cationic copolymers and their use as flocculants a Water-soluble cationic copolymers and their use as flocculants a

1995-04-18

1997-12-23

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526263, 526291, C08F 2054

Patent

active

057008930

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.

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