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:
Feb. 23, 1993
Filed:
Jul. 13, 1992
Applicant:
Inventors:
James R Kittrell, Amherst, MA (US);
Charles W Quinlan, Amherst, MA (US);
Assignee:
KSE Inc., Sunderland, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526 77 ; 526271 ; 526332 ;
Abstract
A copolymer of maleic anhydride and an alkyl vinyl ether is prepared with substantially reduced benzene content by first contacting the alkyl vinyl ether with activated charcoal and then reacting together the charcoal treated alkyl vinyl ether and maleic anhydride in the presence of a free radical initiator.