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. 12, 1993
Filed:
Jun. 26, 1992
Applicant:
Inventors:
Tsutami Misawa, Yokohama, JP;
Hisato Itoh, Yokohama, JP;
Tsutomu Nishizawa, Yokohama, JP;
Masami Nakano, Nagoya, JP;
Hiroyuki Katayama, Nagoya, JP;
Assignee:
Mitsui Toatsu Chemicals, Incorporated, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
552218 ; 552219 ; 548151 ; 548156 ; 548219 ; 548218 ;
Abstract
Anthraquinonic colorant represented by the formula (I): ##STR1## wherein Q.sup.1 and Q.sup.2 are each independently substituted or unsubstituted anthraquinonyl groups, Z.sup.1 and Z.sup.2 are bridge groups, A is an aromatic divalent group, and n is 0 or 1. The polarizing film which contains at least one colorant of the present invention in a hydrophobic resin, has excellent durability and moisture resistance.