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...

2006-12-22

2008-10-28

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...

C526S068000, C526S070000, C526S212000, C526S330000

Reexamination Certificate

active

07442751

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 N-vinyllactam is added to the reflux.

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