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:
Jan. 19, 1988
Filed:
Sep. 10, 1986
Applicant:
Inventors:
Guy Rabilloud, Grenoble, FR;
Paul Marriagi, Seyssuel, FR;
Serge Gonzales, Saint Priest, FR;
Bernard Sillion, Lyons, FR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528353 ; 560 37 ; 560 41 ; 560 76 ;
Abstract
Polyimide precursor compositions are described which may be prepared by rting a biprimary aromatic diamine with a diester-diacid or an aromatic tetraacid, and then with the substantially stoichiometrical complement of an aromatic dianhydride. The polyimide precursor compositions are used in the manufacture of insulating coatings, films, impregnating or enamelling varnishes for electric wires etc., and have excellent qualities of flexibility, adhesiveness and heat resistance.