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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.:

US 8906475 B1

PDFFull Text
Date of Patent:
Dec. 09, 2014

Filed:

Sep. 29, 2010

Cellulose acylate film, retardation film, polarizer and liquid-crystal display device

Applicants:

Nobutaka Fukagawa, Kanagawa, JP;

Masato Nagura, Kanagawa, JP;

Takayasu Yasuda, Kanagawa, JP;

Takahiro Ohno, Kanagawa, JP;

Satoshi Tanaka, Kanagawa, JP;

Aiko Yamamoto, Kanagawa, JP;

Aiko Yoshida, Kanagawa, JP;

Shinya Watanabe, Kanagawa, JP;

Inventors:

Nobutaka Fukagawa, Kanagawa, JP;

Masato Nagura, Kanagawa, JP;

Takayasu Yasuda, Kanagawa, JP;

Takahiro Ohno, Kanagawa, JP;

Satoshi Tanaka, Kanagawa, JP;

Aiko Yamamoto, Kanagawa, JP;

Aiko Yoshida, Kanagawa, JP;

Shinya Watanabe, Kanagawa, JP;

Assignee:

Fujifilm Corporation, Tokyo, JP;

Attorneys:

Jean C. Edwards, Esq.

Edwards Neils PLLC

Primary Examiner:

Gwendolyn Blackwell

Assistant Examiner:

Ruiyun Zhang

Int. Cl.
CPC ...
C09K 19/00 (2006.01); C08B 15/00 (2006.01); C08L 1/10 (2006.01); B32B 27/30 (2006.01); G02B 5/30 (2006.01); C08J 5/18 (2006.01); B32B 27/18 (2006.01); C08K 5/34 (2006.01); C08L 1/14 (2006.01); B32B 23/08 (2006.01); B32B 23/20 (2006.01); C08L 1/12 (2006.01); B32B 27/06 (2006.01); C08B 3/22 (2006.01); C08K 5/151 (2006.01); C08K 5/103 (2006.01);
U.S. Cl.
CPC ...
G02B 5/3083 (2013.01); C08J 2301/10 (2013.01); C08B 15/005 (2013.01); C08L 1/10 (2013.01); B32B 27/30 (2013.01); C08J 5/18 (2013.01); B32B 27/18 (2013.01); C08K 5/34 (2013.01); C08L 1/14 (2013.01); B32B 23/08 (2013.01); B32B 23/20 (2013.01); C08L 1/12 (2013.01); B32B 27/06 (2013.01); C08B 3/22 (2013.01); C08K 5/151 (2013.01); C08K 5/103 (2013.01);
Abstract

Provide is a cellulose acylate film, of which the environmental humidity-dependent retardation change is small and which, when stuck to a polarizer and used in high-temperature and high-humidity environments, is effective for preventing the polarizing element from being deteriorated. A cellulose acylate film, which contains a hydrogen-bonding compound satisfying the following requirements (A) to (C), and at least one hydrophobizing agent selected from a polyalcohol ester-base hydrophobizing agent, a polycondensate ester-base hydrophobizing agent and a carbohydrate derivative-base hydrophobizing agent: (A) the compound has both a hydrogen-bonding donor part and a hydrogen-bonding acceptor part in one molecule, (B) the value computed by dividing the molecular weight of the compound by the total number of the hydrogen-bonding donor number and the hydrogen-bonding acceptor number in the compound is from 30 to 65, and (C) the total number of the aromatic ring structures in the compound is from 1 to 3.

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