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

2010-12-07

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...

C526S212000, C526S330000

Reexamination Certificate

active

07847044

ABSTRACT:
Method of producing 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, where the polymerization is carried out under a gauge pressure such that evaporation of the components is avoided.

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