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:
Oct. 21, 1986
Filed:
Dec. 03, 1984
Applicant:
Inventors:
David C Dehm, Thornton, PA (US);
H Franklin Lawson, Downingtown, PA (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
525344 ; 252-851 ; 525379 ;
Abstract
An improved process for producing polymers containing styrene moieties and cyclic imide moieties by reacting a styrene/maleic anhydride copolymer with a primary amine is improved by conducting the reaction in a heterogeneous slurry of polymer and amine reactants with an aromatic hydrocarbon dispersing agent having a boiling point above 120.degree. C. and simultaneously removing water formed as the reaction proceeds.