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:
Jul. 12, 2016
Filed:
Dec. 06, 2012
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Toru Umemoto, Ibaraki, JP;
Satoshi Hirata, Ibaraki, JP;
Sadahiro Nakanishi, Ibaraki, JP;
Shoichi Matsuda, Ibaraki, JP;
Tadayuki Kameyama, Ibaraki, JP;
NITTO DENKO CORPORATION, Ibaraki-shi, JP;
Abstract
A method for manufacturing a water resistant optically anisotropic film capable of suppressing the generation of a defect such as a crack or separation is provided. The method for manufacturing the water resistant optically anisotropic of the present invention includes a water resistant treatment step of bringing an optically anisotropic film containing an organic dye having an anionic group into contact with a water resistant treatment liquid containing a multivalent cationic compound and a monovalent cationic compound, and the mass ratio of the multivalent cationic compound and the monovalent cationic compound contained in the water resistant treatment liquid, monovalent cationic compound/multivalent cationic compound, is 0.01 to 2.