The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2009
Filed:
Dec. 21, 2006
Applicants:
Rainer Dobrawa, Mannheim, DE;
Ralf Widmaier, Mannheim, DE;
Eberhard Schupp, Grünstadt, DE;
Klaus Schnell, Neustadt, DE;
Inventors:
Rainer Dobrawa, Mannheim, DE;
Ralf Widmaier, Mannheim, DE;
Eberhard Schupp, Grünstadt, DE;
Klaus Schnell, Neustadt, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 26/10 (2006.01); C08F 2/06 (2006.01);
U.S. Cl.
CPC ...
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 following conversion of 90 to 99% by weight of the vinyllactam used, some of the solvent is distilled off and the polymerization is continued.