Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2006-12-22
2008-11-11
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...
C526S068000, C526S070000, C526S212000, C526S330000
Reexamination Certificate
active
07449531
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 condensate formed in the reflux is returned to the polymerization mixture from below.
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Dobrawa Rainer
Meister Martin
Schnell Klaus
Schupp Eberhard
Widmaier Ralf
BASF SE
Connolly Bove & Lodge & Hutz LLP
Pezzuto Helen L.
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