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:
Dec. 02, 1980
Filed:
Apr. 24, 1979
Applicant:
Inventors:
Warren E Rayford, Peoria, IL (US);
Robert E Wing, Peoria, IL (US);
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
C08B / ; C08B / ;
U.S. Cl.
CPC ...
536 47 ; 536 50 ; 536106 ; 536111 ;
Abstract
Crosslinked starch is reacted with an epihalohydrin in the presence of a strong acid catalyst to produce the 3-halo-2-hydroxypropyl ether. Substitution of the halogen with nitrogen-containing compounds enables the preparation of novel water-insoluble cationic, anionic, and chelating starch ethers, as well as starch ethers having degrees of substitution heretofore unattainable in the prior art.
Rayford, Warren. (1980). Crosslinked starch halohydrins and their nitrogen-containing (U.S. Patent No. 4237271). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4237271
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile