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

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United States of America Patent

PATENT NO 9151883
APP PUB NO 20140318413A1
SERIAL NO

14327193

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
FUJIFILM CORPORATION26-30 NISHIAZABU 2-CHOME MINATO-KU TOKYO 106-8620

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukagawa, Nobutaka Kanagawa, JP 106 522
Nagura, Masato Kanagawa, JP 39 307
Ohno, Takahiro Kanagawa, JP 28 121
Tanaka, Satoshi Kanagawa, JP 959 10603
Watanabe, Shinya Kanagawa, JP 282 1738
Yamamoto, Aiko Kanagawa, JP 9 14
Yasuda, Takayasu Kanagawa, JP 16 218
Yoshida, Aiko Kanagawa, JP 52 174

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