Method of producing water-soluble nonturbid copolymers of at...

Details Method of producing water-soluble nonturbid copolymers of at... Method of producing water-soluble nonturbid copolymers of at...

2006-12-21

2009-08-11

Pezzuto, Helen L. (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S065000, C526S212000, C526S330000

Reexamination Certificate

active

07572871

ABSTRACT:
Method of producing vinyllactam copolymers by free-radical polymerization of at least one water-soluble N-vinyllactam and at least one hydrophobic comonomer in an organic solvent in the presence of an initiator under reflux conditions, where the initiator is introduced into the polymerization mixture from below.

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