Title:
光学フィルム用樹脂組成物及び光学フィルム
Document Type and Number:
Japanese Patent JP4432513
Kind Code:
B2
Abstract:
A resin composition having excellent heat resistance and dynamic characteristic and having excellent characteristics as a composition for optical films exhibiting negative birefringence, an optical film exhibiting negative birefringence comprising the resin composition, and a process of producing the optical film are provided. The resin composition comprises (a) 30-95% by weight of a copolymer containing an alpha-olefin residual group unit and an N-phenyl-substituted maleimide residual group unit and having a weight average molecular weight, as reduced into standard polystyrene, of 5x10<3 >to 5x10<6>; and (b) 70-5% by weight of an acrylonitrile-styrene based copolymer, a weight ratio of an acrylonitrile residual group unit to a styrene residual group unit being 20/80 to 35/65, and having a weight average molecular weight, as reduced into standard polystyrene, of 5x10<3 >to 5x10<6>.
Inventors:
Nobuyuki Toyomasu
Inoji Yojiro
Inoji Yojiro
Application Number:
JP2004025549A
Publication Date:
March 17, 2010
Filing Date:
February 02, 2004
Export Citation:
Assignee:
Tosoh Corporation
International Classes:
C08J5/18; C08L35/00; B29C55/12; C08L23/08; C08L25/12; C08L55/02; G02B5/30; B29K23/00; B29L11/00
Domestic Patent References:
| JP11140334A | ||||
| JP2002341140A |