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:
Jun. 30, 1998
Filed:
Feb. 02, 1996
Applicant:
Inventor:
C Steven Sikes, Mobile, AL (US);
Assignee:
University of South Alabama, Mobile, AL (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528363 ;
Abstract
Absorbent gelling materials are prepared by crosslinking polyaspartate units. The crosslinked homopolymers exhibit improved gel volumes, gel strengths and extractable material characteristics. Using diamine crosslinkers in an amount of 2.5-30 percent by weight, the blue-dextran saline gel volumes of at least 15 can be obtained. Similarly, gel strengths of 300 N/m.sup.2 or better, including gel strengths above 3000 N/m.sup.2, can be obtained. The resulting product is susceptible of a variety of uses, is biodegradable, and can be prepared in a particle size suitable for use in a diaper.