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Title:
PROTECTIVE FILM FOR PHASE-DIFFERENCE FILM, AND LAMINATED PHASE-DIFFERENCE FILM
Document Type and Number:
Japanese Patent JP2009286910
Kind Code:
A
Abstract:

To provide a laminated phase-difference film high in cracking resistance in its handling and/or in undergoing a heat-shock test, etc., and to provide a protective film for phase-difference film, capable of obtaining such a laminated phase-difference film.

The protective film for phase-difference film is made from (B) a thermoplastic resin composition having a breaking strength of 10-50 MPa, a breaking elongation of 300-1,500%, a planar impact fracture energy of 510-4 J/m or greater and dynamic storage modulus and dynamic loss modulus of 1105 to 2108 Pa each at -40C and at a frequency of 1 Hz. This protective film is optically nearly isotropic. The laminated phase-difference film is such that these protective films are laminated respectively on both sides of a phase-difference film made from (A) a thermoplastic resin composition having a breaking strength of 20-80 MPa, a breaking elongation of 0.5-8% and a planar impact fracture energy of 910-5 J/m or less.


Inventors:
KITAZAWA SATOSHI
MATSUO TOMINE
ONO YUHEI
UCHIYAMA AKIHIKO
Application Number:
JP2008141568A
Publication Date:
December 10, 2009
Filing Date:
May 29, 2008
Export Citation:
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Assignee:
TEIJIN LTD
International Classes:
C08J5/18; B32B27/00; G02F1/13363
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Satoshi Deno
Atsushi Ebiya
Nobuo Sekine