Abstract: The retardation film of the present invention contains at least one of an epoxy resin cured product and an epoxy (meth)acrylate resin cured product. In the retardation film of the present invention, in-plane birefringence index thereof at a wavelength of 590 nm is preferably 0.001 or more and a birefringence index in a thickness direction thereof at a wavelength of 590 nm is preferably 0.001 or more.

Abstract: Provided are a polarizer protective film containing a (meth)acrylic resin as a main component and being excellent in adhesion with a polarizer, a polarizing plate including the polarizer protective film and a polarizer which are unlikely to peel off from each other, and an image display apparatus of high quality using the polarizing plate. The polarizer protective film of the present invention includes a coating layer containing a (meth)acrylic resin (B) as a main component on at least one surface of a film containing a (meth)acrylic resin (A) as a main component.

Abstract: The retardation film of the present invention contains at least one of an epoxy resin cured product and an epoxy (meth)acrylate resin cured product. In the retardation film of the present invention, in-plane birefringence index thereof at a wavelength of 590 nm is preferably 0.001 or more and a birefringence index in a thickness direction thereof at a wavelength of 590 nm is preferably 0.001 or more.

Abstract: Provided are an optical film which has excellent heat resistance and excellent optical transparency as well as an excellent UV-absorbing ability even in the wavelength range of 200 to 350 nm, and which is free of any defect in terms of its external appearance, a polarizing plate having a few external appearance defects and using the optical film, and an image display apparatus of high quality using the polarizing plate. The optical film of the present invention is obtained through extrusion molding of a molding material containing resin components containing a (meth)acrylic resin as a main component and 0.35 to 3.0 parts by weight of a cyanoacrylate-based UV absorber with respect to 100 parts by weight of the resin components.

Abstract: Provided is a polarizer protective film of thin type, which has excellent heat resistance and excellent transparency as well as excellent UV-absorbing ability, has good external appearance of a film surface, and can be stably produced by film forming. The polarizer protective film of the present invention includes a resin layer (A) and a resin layer (B1) in the stated order, in which the resin layer (A) is a resin layer containing a (meth) acrylic resin as a main component and contains a UV absorber at a ratio of 0.5 to 10 wt % with respect to a resin component contained in the resin layer (A), and the resin layer (B1) is a resin layer containing a (meth) acrylic resin as a main component and contains a UV absorber at a ratio of more than 0 wt % and 2 wt % or less with respect to a resin component contained in the resin layer (B1).

Abstract: Provided is a polarizer protective film of thin type, which has excellent heat resistance and excellent transparency as well as excellent UV-absorbing ability, has good external appearance of a film surface, and can be stably produced by film forming. The polarizer protective film of the present invention includes a resin layer (A) and a resin layer (B1) in the stated order, in which the resin layer (A) is a resin layer containing a (meth)acrylic resin as a main component and contains a UV absorber at a ratio of 0.5 to 10 wt % with respect to a resin component contained in the resin layer (A), and the resin layer (B1) is a resin layer containing, as a main component, a thermoplastic resin other than a (meth) acrylic resin.

Abstract: Provided are: a polarizer protective film, which is allowed to express excellent UV-absorbing ability by using a UV-absorbing monomer as a raw material, has excellent heat resistance and excellent optical transparency, and has much less coloring and foaming; a polarizing plate with less defects in an outer appearance, using the polarizer protective film; and an image display apparatus of high quality, using the polarizing plate. The polarizer protective film of the present invention has a light transmittance at 380 nm in a thickness of 80 ?m of 30% or less, and is obtained by molding a forming material that contains a resin component containing as a main component a (meth)acrylic resin obtained by polymerizing a monomer composition containing a UV-absorbing monomer and a (meth)acrylic monomer by extrusion molding.

Abstract: Provided are a polarizer protective film containing a (meth)acrylic resin as a main component and being excellent in adhesion with a polarizer, a polarizing plate including the polarizer protective film and a polarizer which are unlikely to peel off from each other, and an image display apparatus of high quality using the polarizing plate. The polarizer protective film of the present invention includes a coating layer containing a (meth) acrylic resin (B) as a main component on at least one surface of a film containing a (meth)acrylic resin (A) as a main component.

Abstract: A polarizer of the present invention comprises stretched film that is obtained from a film by subjecting the film to at least a dyeing treatment with a dichroic material and a stretching treatment, wherein the film is made from a mixture containing a polyvinyl alcohol-based resin and a polycarboxylic acid compound having two or more carboxyl groups and/or one or more acid anhydride groups and a molecular weight of 1,000 or less. The polarizer can suppress degradation in optical properties to a minimum even at high temperature.

Abstract: Provided are a polarizing plate which has no defects of unevenness and is excellent in optical characteristics as well as in external appearance, and an image display apparatus of high quality using such a polarizing plate. The polarizing plate of the present invention includes a polarizer and a protective layer (A) placed on at least one surface of the polarizer, in which the protective layer (A) is a (meth)acrylic resin layer having a thickness of 1 to 50 ?m with a surface hardness of B or more in terms of a pencil hardness, and an adhesive layer having a thickness of 50 to 150 nm is placed between the polarizer and the protective layer (A).

Abstract: A press-through package obtained by placing objects to be packed, in the accommodating pockets formed by vacuum forming or the like of a sheet made of a thermoplastic norbornene type resin, particularly preferably a hydrogenated product of ring-opening polymerization product of a dicyclopentadiene type monomer, and then closing the openings of pockets of the sheet with another sheet such as metal foil to pack the objects to be packed, which package makes the packed objects clearly visible in the pocket portions, prevents the deterioration of the packed objects by moisture bacause of its excellent water vapor barrier properties, and is good in production efficiency.

Abstract: A phase plate comprises, as a birefringent layer, a film obtained by stretching and orienting a sheet of a thermoplastic saturated norbornene resin, which has been formed by melt forming. The phase plate of the invention is such that the birefringent layer is optically even at the whole surface, and such optical evenness remains constant even by changes of temperature, humidity and/or the like. The phase plate of the invention can be used in parts for polarization microscopes, parts for liquid crystal displays, etc., and is particularly suitable for use in a phase plate for liquid crystal displays.

Abstract: A thermoplastic norbornene based molded article which can be used as a substrate for liquid crystal display having an excellent performance; said substrate having a specified surface roughness of 0.05 .mu.m or less, and a liquid crystal display produced therefrom.