Abstract: A biaxially oriented polyester film for solar cells which is made of a composition of a polyethylene terephthalate prepared by using an antimony compound and/or a titanium compound as a polycondensation catalyst(s), wherein the composition contains 10 to 80 mmol % of a phosphorus atom derived from specific phosphonic acid or specific phosphinic acid and 2 to 60 mmol % of the total of an antimony atom and/or a titanium atom as metal atoms based on the number of moles of all dicarboxylic acid components constituting the polyethylene terephthalate, the biaxially oriented polyester film has a plane orientation coefficient “fn” of 0.160 to 0.175, and the polyester of the film has an intrinsic viscosity number of 0.56 to 0.74 dl/g and a terminal carboxyl group concentration of 6 to 29 equivalents/ton.

Abstract: An object of the present invention is to provide a thin biaxially oriented film excellent in dimensional stability against humidity change, as well as a magnetic recording medium and a film capacitor using the same. The present invention provides a single layered or laminated biaxially oriented film comprising an aromatic polyester (a) and a polyolefin (b) having a melting point of from 230 to 280° C., wherein the ratio of the polyolefin (b) is from 2 to 60% based on the entire weight of the film, and the film thickness is from 1 to 10 ?m.

Abstract: In a laminated polyester film for solar cell backsheets, which includes a surface layer (A) and a substrate layer (B), the surface layer (A) is made of a polyester composition including 10 to 30 wt % of rutile-type titanium dioxide particles and 70 to 90 wt % of a polyester, the substrate layer (B) is made of a polyester composition including 0.1 to 4 wt % of rutile-type titanium dioxide particles and 96 to 99.9 wt % of a polyester, the substrate layer (B) has a thickness of 70% to 97% of the total film thickness, the weight average molecular weight and COOH end group concentration of polyester in the laminated film are 47,000 to 65,000 and 6 to 25 eq/ton, respectively, and the average content of rutile-type titanium dioxide particles in all layers of the laminated film is 3 to 8 wt %. As a result, a laminated polyester film for solar cell backsheets, which has excellent weatherability and hydrolysis resistance and is capable of maintaining strength over a long period of time, is provided.

Abstract: A thin biaxially oriented film excellent in dimensional stability against humidity change, as well as a magnetic recording medium and a film capacitor using the same. The present invention provides a laminated biaxially oriented film comprising: at least one layer comprising an aromatic polyester (a); and at least one layer of a polyolefin (b) having a melting point of from 230 to 280° C.; wherein the ratio of the polyolefin (b) is from 2 to 60% based on the entire weight of the film, and the film thickness is from 1 to 10 ?m.

Abstract: There is provided a laminated film for a dye-sensitized solar cell characterized by comprising a polyester film and a transparent conductive layer formed on one side thereof, the transparent conductive layer having a surface tension of 40 mN/m or greater, and an electrode for a dye-sensitized solar cell with excellent adhesion between the transparent conductive layer and porous semiconductor layer and high photogenerating efficiency.

Abstract: A biaxially oriented polyester film which has a Young's modulus (YMD) in the film machine direction (YMD) of 6.5 GPa or more and a Young's modulus in the width direction (YTD) of 8.2 to 9.8 GPa and is used as a base film for magnetic recording tapes of linear recording system, and a magnetic recording tape of linear recording system comprising the same as a base film. There are provided a biaxially oriented polyester film which has excellent dimensional stability, especially dimensional stability in the width direction and is suitable for use as a base film for magnetic recording tapes of linear recording system and a magnetic recording tape comprising the same.

Abstract: An object of the invention is to provide such an oriented polyester film that has a constant thickness, and is excellent in dimensional stability at a high temperature and dimensional stability to temperature change in a working temperature range. The invention relates to an oriented polyester film containing as a major component of a substrate layer polyethylene -2,6-naphthalene dicarboxylate, being stretched at least in one direction, and having a film thickness of from 12 to 250 ?m, wherein (1) a coefficient of linear thermal expansion ?t at a temperature of from 30 to 100° C. is from 0 to 15 ppm/° C. in both longitudinal and width directions of the film, and (2) a thermal shrinkage rate at 100° C. for 10 minutes is 0.5% or less in both longitudinal and width directions of the film.

Abstract: A conductive film which is excellent in moist heat resistance, conductivity, transparency and coating film strength. The conductive film comprises a base film and a coating layer formed on the base film by curing a composition comprising: (i) a conducting polymer containing a polycationic polythiophene having a recurring unit represented by the following formula (1) as the main constituent and a polyanion (component A): wherein R1 and R2 are each independently a hydrogen atom or alkyl group having 1 to 4 carbon atoms or bonded together to form an alkylene group having 1 to 12 carbon atoms which may be substituted arbitrarily; (ii) a water-soluble compound having at least one hydrophilic group selected from the group consisting of oxyethylene group and sulfonate group (component B); and (iii) a crosslinking agent having a glycidyl group (component C), and which has a surface resistance change rate after it is treated at a temperature of 60° C. and a humidity of 90% for 240 hours of 160% or less.

Abstract: It is to provide a base material for a solar cell, constituted by a stretched film of a composition containing a thermoplastic crystalline resin and inert particles, in which the base material for a solar cell has, on at least one side, a surface that has a center plane average surface roughness Ra of 30 to 500 nm and an average interval between local crests S on the surface of 40 to 5,000 nm, by which the base material for a solar cell provided has a surface capable of providing a light trapping effect and is useful for producing a solar cell exhibiting an excellent photoelectric conversion efficiency upon using as a base material of a thin film solar cell.

Abstract: A biaxially oriented polyester film which has high dielectric strength at a temperature range from room temperature to a high temperature, maintains high dielectric strength even after it is heated for a long time and is suitable for electric insulation application. The film comprises at least one layer made of a polyester, the polyester of the at least one layer contains a titanium compound as a catalyst and a radical scavenging stabilizer, the content of the radical scavenging stabilizer is 1,000 to 50,000 ppm based on the weight of the polyester, and the amount of the radical scavenging stabilizer chemically bonded to the polyester does not exceed 200 ppm.

Abstract: An object of the invention is to provide a biaxially oriented polyester film for automobile driving motors, which has, in addition to high-temperature dimensional stability, high hydrolysis resistance required for an insulating film of an automobile driving motor, and also exhibits excellent delamination characteristics.

Abstract: A biaxially oriented polyester film which has a Young's modulus (YMD) in the film machine direction (YMD) of 6.5 GPa or more and a Young's modulus in the width direction (YTD) of 8.2 to 9.8 GPa and is used as a base film for magnetic recording tapes of linear recording system, and a magnetic recording tape of linear recording system comprising the same as a base film. There are provided a biaxially oriented polyester film which has excellent dimensional stability, especially dimensional stability in the width direction and is suitable for use as a base film for magnetic recording tapes of linear recording system and a magnetic recording tape comprising the same.

Abstract: A multi-layer film for use as a solar cell substrate, consisting of a supporting layer (s) and a scattering layer (s), wherein the supporting layer comprises a thermoplastic crystalline resin, the scattering layer comprises a thermoplastic crystalline resin and particles having a different refractive index from the refractive index of the thermoplastic crystalline resin, the content of the particles in the scattering layer is 0.05 to 20 vol % based on the volume of the scattering layer, the absolute value of the difference between the refractive index of the particles contained in the scattering layer and the refractive index of the thermoplastic crystalline resin in the scattering layer is 0.01 to 1.00, the both surfaces of the multi-layer film have a center line average surface roughness Ra of not more than 50 nm, and the multi-layer film has a total light transmittance Tt of not less than 80% and a haze ratio of not less than 8%.

Abstract: A biaxially oriented film for reinforcing the electrolyte membrane of a polymer electrolyte fuel cell, wherein the film includes (i) a layer mainly composed of polyethylene naphthalene dicarboxylate and has (ii) a Young's modulus in at least one direction of not less than 9,000 MPa and (iii) a thickness of 15 to 150 ?m. The biaxially oriented film has a satisfactory reinforcing effect as a reinforcing member for a polymer electrolyte membrane at the operation temperature of a polymer electrolyte fuel cell though it is a thin film.

Abstract: An object of the present invention is to provide a biaxially oriented film for electrical insulation that has excellent withstand voltage characteristics over a temperature range from room temperature to higher temperatures. The film excels in withstand voltage characteristics and processability by inclusion of fullerene in a crystalline thermoplastic resin film.

Abstract: A laminated polyester film comprising a coating layer formed on at least one side of a polyester film, this coating layer comprising a polymer binder and inorganic-organic composite particles having an average particle diameter of 200 to 2,000 nm. This film has excellent scratch resistance, adhesion, transparency and slipperiness and is useful as an adhesive film for optical use.

Abstract: A laminated film comprising a porous semiconductor layer, a transparent conductive layer and a transparent plastic film, wherein the porous semiconductor layer comprises crystalline titanium oxide fibers and crystalline titanium oxide fine particles, the crystalline titanium oxide fibers and the crystalline titanium oxide fine particles are substantially composed of an anatase phase and a rutile phase, the anatase phase content ratio calculated from the integral intensity ratio of X-ray diffraction is between 1.00 and 0.32, and the laminated film is used in an electrode for dye-sensitized solar cells, and the electrode and a dye-sensitized solar cell comprising the same.

Abstract: A laminate for dye-sensitized solar cell comprising a plastic film of which the thermal shrinkage in the machine direction thereof when heat-treated at 200° C. for 10 minutes is from ?1.5 to +0.5%, and a transparent conductive layer provided on the film, which comprises essentially indium oxide with zinc oxide added thereto and has a surface resistivity of at most 40 ?/square, may give a highly-durable and flexible, dye-sensitized solar cells having high photovoltaic power generation efficiency.

Abstract: There is provided a conductive film which is formed by laminating an anchor coating layer containing a polyester resin and an acrylic resin having an oxazoline group and a polyalkylene oxide chain as constituents and a transparent conductive coating layer on at least one surface of a base material film in this order and which has a total light transmittance of at least 60% and a surface resistance value of 1×101 to 1×104?/ This conductive film has excellent transparency and conductivity, can retain a satisfactory conductive performance even when an external force is applied since adhesion between the base material and the transparent conductive coating layer is good, and is suitably used as a transparent electrode or electromagnetic shielding material for a liquid crystal display (LCD), transparent touch panel, organic electroluminescent device and inorganic electroluminescent lamp.

Abstract: There is provided a dye-sensitized photoelectric conversion element comprising a porous photoelectrode layer which comprises dye-sensitized porous semiconductor particles, a charge transport layer and an opposite electrode layer in this order, the charge transport layer comprising a solid mixture comprising 0.1 to 50 wt % of carbon material and 50 to 99.9 wt % of ionic liquid based on the total weight thereof, the charge transport layer comprising at most 1 wt % of iodine and at most 0.9 wt % of p-type conductive polymer or comprising neither iodine nor the p-type conductive polymer.