Abstract: This invention provides a gas barrier film, which can suppress blocking and winding deviation, and an optical film using the gas barrier film. The gas barrier film includes a flexible substrate and an inorganic thin film layer formed on at least one surface of the flexible substrate. A static friction coefficient between one surface of the gas barrier film and the other surface is not less than 0.85 and not more than 2.0, and when a 50 mm-square portion cut from the gas barrier film is placed on a horizontal surface such that a central portion of the 50 mm-square portion is in contact with the horizontal surface, an average value of distances from the horizontal surface to four corners of the 50 mm-square portion is not more than 2 mm.

Abstract: A film having excellent optical homogeneity, which is suitably used as an optical film in an image display device, and a method for manufacturing the same. Moreover, an evaluation method which can evaluate the optical homogeneity of the film with a higher precision than in conventional evaluation methods is provided. A film that is a cast film containing a resin having a weight average molecular weight of 200,000 or more, wherein, when line profiles in a direction h and a direction v which are orthogonal to each other in a film inverse space image obtained by Fourier transforming a projection image obtained by a projection method using the cast film are a line profile h and a line profile v.

Abstract: A resin film 10 comprising a polyimide-based polymer is disclosed. The resin film 10 has a tensile elastic modulus of 4.0 GPa or more. In a bending test where the resin film 10 is repeatedly folded into a U-shape until the distance between the resin film faces opposed to each other reaches 3 mm, and unfolded, the number of times of folding the resin film 10 until the resin film 10 fractures is more than 100000.

Abstract: A resin film 10 comprising a polyimide-based polymer is disclosed. The resin film 10 has a tensile elastic modulus of 4.0 GPa or more. In a bending test where the resin film 10 is repeatedly folded into a U-shape until the distance between the resin film faces opposed to each other reaches 3 mm, and unfolded, the number of times of folding the resin film 10 until the resin film 10 fractures is more than 100000.

Abstract: An object of the present invention is to provide a gas barrier laminated film having high adhesion under a high-temperature working environment.

Abstract: Disclosed is a laminated film including a resin film containing a polyimide-based polymer; and a functional layer provided on at least one principal face side of the resin film. Also disclosed is a resin film containing a polyimide-based polymer and a silicon material containing silicon atoms, in which Si/N that is the atomic ratio between silicon atoms and nitrogen atoms is 8 or greater in at least one principal face.

Abstract: This invention provides a gas barrier film, which can suppress blocking and winding deviation, and an optical film using the gas barrier film. The gas barrier film includes a flexible substrate and an inorganic thin film layer formed on at least one surface of the flexible substrate. A static friction coefficient between one surface of the gas barrier film and the other surface is not less than 0.85 and not more than 2.0, and when a 50 mm-square portion cut from the gas barrier film is placed on a horizontal surface such that a central portion of the 50 mm-square portion is in contact with the horizontal surface, an average value of distances from the horizontal surface to four corners of the 50 mm-square portion is not more than 2 mm.

Abstract: A manufacturing method for a laminated body having a laminated film and an adhesive layer, the manufacturing method including a step of forming the adhesive layer on one surface of the laminated film, wherein the laminated film is a laminated film on which at least a substrate, and a thin film layer containing at least silicon are laminated; and the step of forming the adhesive layer includes forming the adhesive layer on a surface of a laminated film material in which the thin film layer is laminated, while conveying the laminated film material in which the laminated film is continuous in strip shape in a lengthwise direction, and while applying a tensile force of at least 0.5 N/mm2 and less than 50 N/mm2 per unit of cross-sectional area, in the lengthwise direction, to the laminated film material.

Abstract: An object of the present invention is to provide a gas barrier laminated film having high adhesion under a high-temperature working environment.

Abstract: The present invention relates to a resin composition including a substance capable of reacting reversibly with a carbon dioxide gas, and a hydrocarbon-based polymer; a carbon dioxide gas separation membrane obtained from the resin composition; a carbon dioxide gas separation membrane module including the separation membrane; and a carbon dioxide gas separation apparatus including at least one type of the module.

Abstract: The present invention relates to a resin composition including a substance capable of reacting reversibly with a carbon dioxide gas, and a hydrocarbon-based polymer; a carbon dioxide gas separation membrane obtained from the resin composition; a carbon dioxide gas separation membrane module including the separation membrane; and a carbon dioxide gas separation apparatus including at least one type of the module.

Abstract: A polymer electrolyte composition obtained by mixing a plurality of ion-conductive polymers, wherein if the ion-conductive polymer that is highest in ion exchange capacity among the plurality of ion-conductive polymers is termed first ion-conductive polymer, and the ion-conductive polymer that is lowest in ion exchange capacity is termed second ion-conductive polymer, then the first ion-conductive polymer and the second ion-conductive polymer are both block copolymers composed of a segment having an ion-exchange group and a segment having substantially no ion-exchange groups, and if the weight fraction of the segment having an ion-exchange group in the first ion-conductive polymer is termed Wh1, and the weight fraction of the segment having an ion-exchange group in the second ion-conductive polymer is termed Wh2, then the relations (I) and (II) listed below are satisfied: (I) Wh1>Wh2; (II) Wh1?Wh2?0.25.

Abstract: The present invention provides a polymer electrolyte membrane with excellent proton conductivity in its thickness direction. Preferably, the polymer electrolyte membrane contains a polymer compound comprising an ionic segment having an ionic functional group and a nonionic segment having substantially no ionic functional group, and the phase containing ionic segments as a main component and the phase containing nonionic segments as a main component are phase-separated, and in the surface region thereof, the change in the amount of the ionic segment from the surface toward the interior substantially decreases monotonically.

Abstract: The present invention provides a polymer electrolyte membrane with excellent proton conductivity in its thickness direction. Preferably, the polymer electrolyte membrane containing a polymer compound comprising an ionic segment having an ionic functional group and a nonionic segment having substantially no ionic functional group, and the phase containing ionic segments as a main component and the phase containing nonionic segments as a main component are phase-separated, and in the surface region thereof, the change in the amount of the ionic segment from the surface toward the interior substantially decreases monotonically.

Abstract: The present invention provides a process for producing a polymerelectrolyte membrane comprising the steps of coating a solution of a polymerelectrolyte on at least one surface of a porous substrate and laminating the coated porous substrate and a supporting material while applying a tension F (kg/cm) in a range of the following expression (A) 0.01?F?10??(A) to the coated porous substrate. According to the present invention, a polymerelectrolyte composite membrane in which wrinkling and the like are suppressed and whose appearance is excellent can be continuously produced.

Abstract: A polymer electrolyte composition obtained by mixing a plurality of ion-conductive polymers, wherein if the ion-conductive polymer having that is highest in ion exchange capacity among the plurality of ion-conductive polymers is termed first ion-conductive polymer, and the ion-conductive polymer that is lowest in ion exchange capacity is termed second ion-conductive polymer, then the first ion-conductive polymer and the second ion-conductive polymer are both block copolymers composed of a segment having an ion-exchange group and a segment having substantially no ion-exchange groups, and if the weight fraction of the segment having an ion-exchange group in the first ion-conductive polymer is termed Wh1, and the weight fraction of the segment having an ion-exchange group in the second ion-conductive polymer is termed Wh2, then the relationships (I) and (II) listed below are satisfied. Wh1>Wh2??(I) Wh1?Wh2?0.

Abstract: A method for producing a polymer electrolyte membrane including: (i) a preparation step for preparing a polymer electrolyte solution by dissolving a polymer electrolyte containing an ion conductive polymer having an ion-exchange group in an organic solvent capable of dissolving the polymer electrolyte, (ii) a coating step for obtaining a polymer electrolyte membrane intermediate containing the ion conductive polymer by a solution casting method using the polymer electrolyte solution obtained in the step (i), and (iii) a washing step for washing the polymer electrolyte membrane intermediate obtained in the step (ii) by bringing the polymer electrolyte membrane intermediate into contact with a washing solvent; wherein the concentration of the organic solvent in the washing solvent brought into contact with the polymer electrolyte membrane intermediate in the washing step (iii) is 2500 ppm by weight or lower.

Abstract: A method for continuously producing a polymer electrolyte membrane including: (i) a preparation step for preparing a polymer electrolyte solution by dissolving a polymer electrolyte containing an ion conductive polymer having an ion-exchange group in an organic solvent capable of dissolving the polymer electrolyte, (ii) a coating step for continuously obtaining a laminate film 1 wherein a supporting substrate and a layer containing an ion conductive polymer are laminated, by casting the polymer electrolyte solution obtained in the step (i) onto the continuously fed supporting substrate, and (iii) a drying step for continuously obtaining a laminate film 2 wherein the supporting substrate and a polymer electrolyte membrane intermediate are laminated, by removing the organic solvent remaining in the layer containing an ion conductive polymer with passing the laminate film 1 obtained in the step (ii) in a drying furnace; wherein the residence time of the laminate film 1 in the drying furnace in the step (iii)

Abstract: A producing method of a polymer electrolyte membrane is provided in which a polymer electrolyte membrane can be easily obtained having excellent ion conductivity in the thickness direction. The preferred producing method of the polymer electrolyte membrane of the present invention is a producing method of the polymer electrolyte membrane having a micro phase separation structure, including an evaporating step of evaporating a solvent from a solution containing the polymer electrolyte having an ion conductive group, wherein a time from start to completion of the evaporation of the solvent is 60 minutes or less in the evaporating step.

Abstract: Provided is a method for producing a laminate in which an ion conductive polymer electrolyte membrane is laminated on a supporting substrate in a state where any one surface of the polymer electrolyte membrane is bonded to the supporting substrate, a difference in a contact angle against water between a first surface and a second surface of the surface of the ion conductive polymer electrolyte membrane being more than 30° in a case where the first surface is the side having a small contact angle against water of a membrane surface and the second surface is the side having a large contact angle against water of the membrane surface, the method includes the steps of: preparing a polymer electrolyte solution in which a polymer electrolyte containing an ion conductive polymer having an aromatic group in the main chain and/or the side chain, and also having an ion exchange group bonded directly to the aromatic group or bonded indirectly to the aromatic group with another atom or atomic group interposed therebetwee