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Patent Searching and Data


Title:
OPTICAL FILM, PROTECTIVE FILM FOR POLARIZING PLATES, AND POLARIZING PLATE
Document Type and Number:
WIPO Patent Application WO/2020/026960
Kind Code:
A1
Abstract:
An optical film according to the present invention comprises a (meth)acrylic resin having a weight average molecular weight of 200,000 or more, rubber particles and organic microparticles each having a glass transition temperature of 80°C or higher. Each of the rubber particles has a core part which comprises a crosslinked polymer having a glass transition temperature of -15°C or lower and a shell part which covers the core part. The optical film has a glass transition temperature (Tg) of 110°C or higher and a breaking elongation of 10% or more at -40°C as measured in accordance with JIS K 7127.

Inventors:
SAITO KOICHI
Application Number:
JP2019/029333
Publication Date:
February 06, 2020
Filing Date:
July 26, 2019
Export Citation:
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Assignee:
KONICA MINOLTA INC (JP)
International Classes:
G02B5/30; C08F220/16
Domestic Patent References:
WO2011138913A12011-11-10
WO2015159645A12015-10-22
WO2015033556A12015-03-12
WO2011162188A12011-12-29
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (8th Floor, Shinjuku First West Bldg. 1-23-7, Nishi-Shinjuku, Shinjuku-k, Tokyo 23, 〒1600023, JP)
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