THERMOPLASTIC RESIN COMPOSITION AND OPTICAL FILMS MADE THEREFROM

Title:

THERMOPLASTIC RESIN COMPOSITION AND OPTICAL FILMS MADE THEREFROM

Document Type and Number:

WIPO Patent Application WO/2006/070687

Kind Code:

A1

Abstract:

A thermoplastic resin composition comprising (A) a cycloolefin polymer and (B) a vinyl polymer having a polar group, characterized by having a glass transition temperature of 100&ring C or above and a difference in glass transition temperature between the polymers (A) and (B) of less than 50&ring C; and optical films made from the composition. The composition and films according to the invention are improved in the retardation developability as attained by stretching at low stress while keeping excellent heat resistance and optical characteristics and maintaining the wavelength dispersion properties. The optical films oriented by stretching exhibit a wavelength-dependent property that the retardation of a transmitted light becomes larger as the wavelength becomes larger, that is, positive wavelength dispersion. Further, the optical films are excellent in the resistance to water absorption and exhibit low photoelastic coefficients and good tight adhesion or adhesiveness to other materials.

Inventors:

MIYAKI NOBUYUKI (JP)
MIYAMOTO YOSHIKAZU (JP)
KAWASHIMA NAOYUKI (JP)
KAJIWARA ICHIRO (JP)

Application Number:

PCT/JP2005/023604

Publication Date:

July 06, 2006

Filing Date:

December 22, 2005

Export Citation:

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Assignee:

JSR CORP (JP)
MIYAKI NOBUYUKI (JP)
MIYAMOTO YOSHIKAZU (JP)
KAWASHIMA NAOYUKI (JP)
KAJIWARA ICHIRO (JP)

International Classes:

C08L65/00; C08L57/06; G02B5/30; G02F1/13363

Foreign References:

JP2002146204A	2002-05-22
JP2005008698A	2005-01-13
JP2002194170A	2002-07-10
JP2001350025A	2001-12-21

Other References: