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:
Aug. 08, 1989
Filed:
Dec. 22, 1987
Applicant:
Inventors:
John M Butler, Centerville, OH (US);
Richard P Chartoff, Cincinnati, OH (US);
James A Harvey, Kettering, OH (US);
Assignee:
University of Dayton, Dayton, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548522 ; 156902 ; 428295 ; 526262 ; 562412 ;
Abstract
The present invention provides a process for producing aromatic ether bismaleimides of the Formula (II) ##STR1## wherein A is a divalent mononuclear or polynuclear aromatic linking group. The process provides good yields and can be scaled up readily to commercial size runs. The present invention also provides compositions containing at least about 80 weight % of the bismaleimide of Formula (II) above.