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:
Oct. 11, 1977
Filed:
Nov. 17, 1975
Applicant:
Inventors:
Karl Herrle, Ludwigshafen, DT;
Hermann Gausepohl, Mutterstadt, DT;
Wolfgang Schwarz, Ludwigshafen, DT;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526 65 ; 260 302 ; 260895 ; 424 80 ; 526 18 ; 526 89 ; 526204 ; 526210 ; 526258 ; 526264 ;
Abstract
A process for the continuous manufacture of vinylpyrrolidone polymers of low K values, wherein vinylpyrrolidone, with or without comonomers copolymerizable therewith, is polymerized in organic solvents at elevated temperatures and superatmospheric pressures in the presence of a source of free radicals.