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. 14, 1999
Filed:
Oct. 15, 1997
Applicant:
Inventors:
Tsutami Misawa, Kanagawa-ken, JP;
Akira Ogiso, Fukuoka-ken, JP;
Rihoko Imai, Tokyo, JP;
Hisato Itoh, Kanagawa-ken, JP;
Assignee:
Mitsui Chemicals, Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C09B / ;
U.S. Cl.
CPC ...
534690 ; 534689 ; 524159 ; 524557 ; 430157 ; 430163 ; 430171 ; 430176 ; 430183 ; 430563 ; 428-1 ; 4271631 ; 427171 ; 427172 ; 427173 ; 264 78 ;
Abstract
The present invention is concerned with a novel azo compound represented by formula (1), (2) or (3), a water-soluble dye comprising this azo compound, and a polarizing film containing this azo compound. The obtained polarizing film has high hydrothermoresistance and a high polarization degree and is excellent in optical characteristics: ##STR1## wherein each of the groups is defined.