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:
Sep. 02, 1997
Filed:
Oct. 02, 1995
Applicant:
Inventors:
Toshiya Sawai, Chibaken, JP;
Seiji Oikawa, Chibaken, JP;
Masaaki Yazawa, Chibaken, JP;
Shizuo Murata, Chibaken, JP;
Masaharu Hayakawa, Chibaken, JP;
Etsuo Nakagawa, Chibaken, JP;
Shinichi Sawada, Chibaken, JP;
Assignee:
Chisso Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C09K / ;
U.S. Cl.
CPC ...
564384 ; 2522994 ; 564433 ; 564376 ;
Abstract
An object of the invention is to propose diamino compounds expressed by the following general formula (1) which are suitable to obtain a raw material, a polyimide resin, for a liquid crystal aligning film without any image sticking and with a high voltage holding ratio at from a low temperature to a high temperature as well as the preparation thereof: ##STR1##