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. 01, 1991
Filed:
Dec. 21, 1990
Applicant:
Inventors:
Shizuo Murata, Ichiharashi, JP;
Minoru Nakayama, Ichiharashi, JP;
Assignee:
Chisso Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564430 ; 528125 ; 528126 ; 528128 ; 568717 ; 568931 ;
Abstract
A novel diamino compound and a dinitro compound and a diol compound as its derivatives are provided, which diamino compound is useful as a raw material for polyimide compounds for an aligning film in a liquid crystal display element exhibiting a high pretilt angle, and expressed by the formula ##STR1## wherein R.sub.1 to R.sub.6 each are H or 1-22C alkyl and may be the same as or different from one another, and R.sub.7 to R.sub.14 each are H or 1-3C alkyl and may be the same as or different from one another.