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:
May. 28, 1996
Filed:
May. 16, 1995
Applicant:
Inventors:
Yoon T Kwak, Wayne, NJ (US);
Stephen L Kopolow, Plainsboro, NJ (US);
Assignee:
ISP Investments Inc., Wilmington, DE (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525378 ; 5253276 ; 5253278 ;
Abstract
A process for hydrolyzing and neutralizing a crosslinked polymer of maleic anhydride and a C.sub.1 -C.sub.5 alkyl vinyl ether, and, optionally a hydrophobic monomer, in anhydride form substantially instantaneously in water at room temperature, which comprises reacting about 0.1-4% by weight of the crosslinked polymer in water at room temperature with ammonium hydroxide base, with stirring, to form a gel solution.