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. 12, 2002
Filed:
Sep. 10, 2001
Applicant:
Inventors:
John H. Clements, Round Rock, TX (US);
Howard P. Klein, Austin, TX (US);
Edward T. Marquis, Austin, TX (US);
James R. Machac, Jr., Lago Vista, TX (US);
Katty Darragas, Oudenaarde, BE;
Assignee:
Huntsman Petrochemical Corporation, Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
C08F / ;
Abstract
Provided herein are cross-linked super absorbing polymers made by reacting a copolymer having an esterifiable acid group with a cyclic alkylene carbonate. The resulting cross-linked materials have an increased ability to retain absorbed liquids even under the influence of applied stress. Catalysts are also disclosed which are useful in promoting the reaction between the alkylene carbonate and copolymer.