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:
Nov. 14, 1978
Filed:
Jun. 03, 1977
Applicant:
Inventor:
James V Duffy, Beltsville, MD (US);
Assignee:
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07d / ;
U.S. Cl.
CPC ...
544353 ; 528332 ; 528310 ; 528327 ;
Abstract
High molecular weight polyphenylamide-quinoxalines comprised essentially of nits of the formula ##STR1## or mixtures thereof, are prepared by heating bifunctional monomers of the formula ##STR2## or mixtures thereof, wherein R is COCH.sub.3 or --H to a temperature above the melting point of the monomer but below the decomposition temperature of the polyphenylamide -quinoxaline (Ca. 475-490.degree. C). This melt polymerization of the bifunctional monomers produces strong, low void adhesive joints.