OPTICAL FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE

WIPO Patent Application WO/2012/144016

A1

The purpose of the present invention is to provide an optical film which has improved heat resistance over time. This purpose has been achieved by an optical film, which contains an acrylic resin (A) and a cellulose ester resin (B) at a mass ratio from 95:5 to 51:49, and wherein the acrylic resin (A) has a weight average molecular weight (Mw) of 80,000 or more but 1,000,000 or less and is represented by general formula (1) and the cellulose ester resin (B) has a total degree (T) of substitution of acyl groups of 2.0 or more but 3.0 or less, a degree of substitution of acyl groups having 3-7 carbon atoms of less than 1.2 and a weight average molecular weight (Mw) of 75,000 or more but 300,000 or less. General formula (1): -(MMA)p-(X)q-(Y)r- (In the formula, MMA represents methyl methacrylate; X represents a monomer unit that has at least one kind of amide group and is copolymerizable with MMA; Y represents a monomer unit that is copolymerizable with MMA and X; and p, q and r represent molar percentages of respective constituent units and satisfy 55 ≤ p ≤ 99, 1 ≤ q ≤ 50, and p + q + r = 100.)

TAKEBE TAKASHI (JP)
TAKAHASHI NAOKI (JP)
TAKIMOTO MASATAKA (JP)
KUBO NOBUO (JP)

PCT/JP2011/059598

October 26, 2012

April 19, 2011

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KONICA MINOLTA ADVANCED LAYERS (JP)
TAKEBE TAKASHI (JP)
TAKAHASHI NAOKI (JP)
TAKIMOTO MASATAKA (JP)
KUBO NOBUO (JP)

G02B5/30; C08J5/18; C08L33/04; G02F1/1335

WO2010016369A1

2010-02-11

JP2010243935A

2010-10-28

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