公开(公告)号：EP1898238A4

公开(公告)日：2017-04-05

申请号：EP06746722

申请日：2006-05-23

Applicant: TORAY INDUSTRIES

Inventor： MORIYAMA HIDEKI ,  MAEKAWA SHIGETOSHI ,  SAKAMOTO JUN ,  TSUKUDA AKIMITSU ,  KIMURA MASAHIRO ,  TANIGUCHI RISA

IPC: G02B5/30 ,  C08G63/18 ,  C08G63/199 ,  C08G63/553 ,  C08G63/672 ,  C08J5/18 ,  C08L67/00

CPC classification number: C08J5/18 ,  C08G63/199 ,  C08G63/553 ,  C08G63/672 ,  C08J2367/00 ,  G02B5/3025

Abstract: The present invention relates to a retardation film using polyester having a photoelastic coefficient of -40×10 -12 Pa -1 to 40×10 -12 Pa -1 . The present invention also relates to a polyester resin for optical use which contains a phosphorus compound, and an alicyclic component and a fluorene derivative component as constituents, and satisfies the following equations (6) and (7): 100 �¢ °C ‰ glass transition temperature ‰ 150 �¢ °C and 1.0 ‰ Ma / 2 + Mb + Mc / P ‰ 5.0 wherein Ma is the number of moles of an alkali metal element contained in 1 ton of the polyester resin, Mb is the number of moles of an alkaline earth metal element contained in 1 ton of the polyester resin, Mc is the sum of the number of moles of a zinc element (Zn), a cobalt element (Co) and a manganese element (Mn) contained in 1 ton of the polyester resin, and P is the number of moles of a phosphorus element contained in 1 ton of the polyester resin.

公开(公告)号：EP1754752A4

公开(公告)日：2007-12-19

申请号：EP05734442

申请日：2005-04-22

Applicant: TORAY INDUSTRIES

Inventor： MAEKAWA SHIGETOSHI ,  MORIYAMA HIDEKI ,  HORIUCHI MITSUHIRO ,  TSUKUDA AKIMITSU

IPC: C08L33/00 ,  C08F8/48 ,  C08J5/18 ,  C08L33/04 ,  C08L33/06 ,  G02B1/04

CPC classification number: G02B1/04 ,  C08L33/04 ,  C08L33/064 ,  C08L33/06 ,  C08L2666/04

Abstract: [PROBLEMS] To provide: a novel, industrially useful acrylic resin film excellent in all of transparency, weatherability, heat resistance, and toughness, in view of the fact that there has been no acrylic resin film having such properties; an acrylic resin film which comprises the acrylic resin film having, e.g., a hard coating layer formed on at least one side of the film and further having an antireflection film formed on at least one side of the film; and an optical filter comprising this film. [MEANS FOR SOLVING PROBLEMS] The former acrylic resin film comprises an acrylic resin having units of glutaric anhydride and acrylic elastomer particles incorporated in the resin, and has a total light transmittance of 91% or higher, a haze of 1.5% or lower, a value of the number of folding operations of 20 or larger, and a degree of thermal shrinkage less than 5% in at least one of the machine direction and the transverse direction in a thermal shrinkage test.