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. 13, 1981
Filed:
Nov. 16, 1979
Applicant:
Inventors:
Yoshiyuki Mukoyama, Hitachi, JP;
Touichi Sakata, Katsuta, JP;
Assignee:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
528 67 ; 260 / ; 260 / ; 428458 ; 4284258 ; 4284735 ; 528 73 ; 1741 / ;
Abstract
A polyamide-imide resin obtained by reacting in a cresol type solvent a polyisocyanate containing isocyanurate rings, an aromatic diisocyanate, a lactam and a polycarboxylic acid containing at least one acid anhydride group, said polyisocyanate being used in an amount of 1 to 30 equivalent % and said lactam in an amount of 20 to 80 equivalent % each based on the total isocyanate equivalent can give a resin composition or a varnish suitable for coating, particularly for producing insulated wire excellent in heat resistance, flexibility, resistance to Freon, wear resistance, and the like.