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:
Apr. 19, 1977
Filed:
Apr. 18, 1975
Applicant:
Inventors:
Yasuhiro Suzuki, Ibaraki, JA;
Katsuhiko Yamaguchi, Ibaraki, JA;
Assignee:
Nitto Electric Industrial Co., Ltd., Ibaraki, JA;
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 2608 / ; 2608 / ; 260838 ; 260858 ;
Abstract
A polyester having imide rings in the molecule comprising the reaction product of (1) a polyhydric alcohol component comprising an imide ring containing diol represented by the formula (I) ##STR1## wherein Ar.sub.1 represents a trivalent aromatic group; Ar.sub.2 represents a divalent aromatic group; and m and n each represents an integer of 1 to 6; with the diol comprising the reaction product of 2 moles of an aromatic tricarboxylic acid anhydride of the formula (II) ##STR2## wherein Ar.sub.1 has the same meaning as above, with 1 mole of a diamine of the formula (III)