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. 29, 1983
Filed:
Apr. 09, 1982
Applicant:
Inventors:
Robert M Bishop, Fort Wayne, IN (US);
Lionel J Payette, Fort Wayne, IN (US);
Roscoe A Pike, Simsbury, CT (US);
Assignee:
Essex Group, Inc., Fort Wayne, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528353 ; 4284735 ;
Abstract
A dielectric film with improved dielectric strength, mechanical strength, high temperature utility, and moisture resistance is described comprising the reaction product of 1, 2, 3, 4 butane tetracarboxylic acid, a multifunctional amine of the formula: ##STR1## and at least one diamine, the multifunctional amine constituting at least 5% of the total amine equivalents of the reactants. The polyimide dielectric film can be cast out of aqueous solution on a mold release surface.