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:
Dec. 28, 1999
Filed:
Feb. 05, 1998
Applicant:
Inventors:
Michie Sakamoto, Osaka, JP;
Amane Mochizuki, Osaka, JP;
Masahiro Yoshioka, Osaka, JP;
Takahiro Fukuoka, Osaka, JP;
Assignee:
Nitto Denko Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C07C / ;
U.S. Cl.
CPC ...
528 74 ; 524195 ; 528491 ; 525907 ; 564252 ;
Abstract
A polycarbodiimide having excellent heat resistance and humidity resistance, which comprises a structural unit represented by the following formula (A) ##STR1## wherein R represents a divalent organic group represented by any one of the following formulae (I) and (II), n is an integer of 2 to 400 ##STR2## wherein X.sub.1 to X.sub.4 independently represent a hydrogen or an alkyl group having 1 to 3 carbon atoms.