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:
Jan. 16, 1979
Filed:
Dec. 06, 1976
Applicant:
Inventors:
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260 / ; 128285 ; 1282 / ; 1282 / ; 195 63 ; 195 68 ; 195D / ; 210 43 ; 210 54 ; 252312 ; 260 / ; 260 / ; 260891 ;
Abstract
Absorbent compositions comprising graft copolymers of acrylonitrile and starch, or related polyhydroxy polymers, are prepared by improved methods of synthesis. Mixing the acrylonitrile with selected water-soluble acrylic comonomers enables unexpected improvements including reduction of the saponification time, total elimination of the base-saponification step, elimination of the starch gelatinization step, preparation of products which absorb large amounts of aqueous fluids under highly acidic conditions, and preparation of products which absorb over 5000 times their weight of deionized water.
Fanta, George. (1979). Highly absorbent graft copolymers of polyhydroxy polymers, (U.S. Patent No. 4134863). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4134863
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile