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:
Nov. 01, 1994
Filed:
Mar. 30, 1993
Applicant:
Inventors:
Susan Y Tseng, Staten Island, NY (US);
Philip F Wolf, Bridgewater, NJ (US);
Assignee:
ISP Investments Inc., Wilmington, DE (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526264 ;
Abstract
What is provided herein is a process for obtaining a polymerizable reaction solution which includes 5-30% by weight of a crosslinker which is the isomeric compound 1-vinyl-3(E)-ethylidene pyrrolidone and 50-80% by weight of a monomer which is vinylpyrrolidone. The polymerizable solution can be used to make crosslinked polyvinylpyrrolidone rapidly upon heating the solution at about 80.degree.-120.degree. C. in the absence of base.