Abstract: Provided are a gas separation membrane which has a resin layer containing a compound having a siloxane bond, in which the resin layer containing a compound having a siloxane bond satisfies Expressions 1 and 2, and at least one of gas permeability or gas separation selectivity is high under high pressure; a method of producing a gas separation membrane; a gas separation membrane module; and a gas separator. 0.9?A/B?0.63??Expression 1 B?1.7??Expression 2 In the expressions, A represents an O/Si ratio that is a ratio of the number of oxygen atoms relative to the number of silicon atoms contained in the resin layer containing a compound having a siloxane bond at a depth of 10 nm from the surface of the resin layer containing a compound having a siloxane bond, and B represents an O/Si ratio that is a ratio of the number of oxygen atoms relative to the number of silicon atoms in the surface of the resin layer containing a compound having a siloxane bond.

Abstract: Provided are a gas separation membrane which has a resin layer containing a compound having a siloxane bond, in which the resin layer containing a compound having a siloxane bond satisfies Expressions 1 and 2, and at least one of gas permeability or gas separation selectivity is high under high pressure; a method of producing a gas separation membrane; a gas separation membrane module; and a gas separator. 0.9?A/B?0.55??Expression 1 B?1.7??Expression 2 In the expressions, A represents an O/Si ratio that is a ratio of the number of oxygen atoms relative to the number of silicon atoms contained in the resin layer containing a compound having a siloxane bond at a depth of 10 nm from the surface of the resin layer containing a compound having a siloxane bond, and B represents an O/Si ratio that is a ratio of the number of oxygen atoms relative to the number of silicon atoms in the surface of the resin layer containing a compound having a siloxane bond.

Abstract: Provided are a gas separation membrane which has a resin layer containing a compound having a siloxane bond, in which the resin layer containing a compound having a siloxane bond satisfies Expressions 1 and 2, and at least one of gas permeability or gas separation selectivity is high under high pressure; a method of producing a gas separation membrane; a gas separation membrane module; and a gas separator. 0.9?A/B?0.63??Expression 1 B?1.7??Expression 2 In the expressions, A represents an O/Si ratio that is a ratio of the number of oxygen atoms relative to the number of silicon atoms contained in the resin layer containing a compound having a siloxane bond at a depth of 10 nm from the surface of the resin layer containing a compound having a siloxane bond, and B represents an O/Si ratio that is a ratio of the number of oxygen atoms relative to the number of silicon atoms in the surface of the resin layer containing a compound having a siloxane bond.

Abstract: Provided are a gas separation membrane which has a resin layer containing a compound having a siloxane bond, in which the resin layer containing a compound having a siloxane bond satisfies Expressions 1 and 2, and at least one of gas permeability or gas separation selectivity is high under high pressure; a method of producing a gas separation membrane; a gas separation membrane module; and a gas separator. 0.9?A/B?0.55??Expression 1 B?1.7??Expression 2 In the expressions, A represents an O/Si ratio that is a ratio of the number of oxygen atoms relative to the number of silicon atoms contained in the resin layer containing a compound having a siloxane bond at a depth of 10 nm from the surface of the resin layer containing a compound having a siloxane bond, and B represents an O/Si ratio that is a ratio of the number of oxygen atoms relative to the number of silicon atoms in the surface of the resin layer containing a compound having a siloxane bond.

Abstract: A gas separation membrane containing a support and a separating layer formed on the support, the separating layer containing a main body and a hydrophilic layer; the main body being disposed on the side of the support; the hydrophilic layer being disposed on the far side of the support and containing a hydrophilic polymer.

Abstract: A separation composite membrane including: a separating layer for separating fluid components, the separating layer being constituted of a polymer having cross-linked structure, and a porous layer for supporting the separating layer, the porous layer having a maximum pore diameter of 0.05 to 0.5 ?m, the separating layer being partly impregnated into the porous layer in the range of 0.1 to 30% in terms of the impregnation amount ratio (?a) defined by Formula (A): [impregnation amount ratio (?a){%}=impregnation depth (s)/(membrane thickness (t1) of separating layer)×100]??(A).

Abstract: A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked polyimide resin over the gas-permeable supporting layer, in which the crosslinked polyimide resin has structure in which a polyimide compound is crosslinked and linked, and the polyimide compound is a copolymer having at least an imide group-containing monomer component and a monomer component having a specific polar group; and a module, a gas separation apparatus and a gas separation method using the same.

Abstract: A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked polyimide resin over the gas-permeable supporting layer, in which the crosslinked polyimide resin is formed by a polyimide compound being crosslinked by a radically crosslinkable functional group thereof, and a ratio [?] of a crosslinked site to an imide group of the polyimide compound (the number of crosslinked sites/the number of imide groups) in the crosslinked polyimide resin is 0.0001 or more and 0.45 or less; a method of producing the same; and a gas separating module, a gas separation apparatus and a gas separation method using the same.

Abstract: A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked polyimide resin over the gas-permeable supporting layer, in which the crosslinked polyimide resin has structure in which a polyimide compound is crosslinked through a specific crosslinking chain, the specific crosslinking chain has at least one kind of linking group selected from the group consisting of —NRaC(?O)—, —NRbC(?O)O—, —CH2OCH2—, —CH2SCH2—, —OC(?O)O—, —C(?O)O?N+(Rc)3—, —SO3?N+(Rd)3— and —PO3?N+(Re)3—, and Ra, Rb, Rc, Rd and Re each independently represent a hydrogen atom or a substituent.

Abstract: A separation composite membrane including: a separating layer for separating fluid components, the separating layer being constituted of a polymer having cross-linked structure, and a porous layer for supporting the separating layer, the porous layer having a maximum pore diameter of 0.05 to 0.5 ?m, the separating layer being partly impregnated into the porous layer in the range of 0.1 to 30% in terms of the impregnation amount ratio (?a) defined by Formula (A): [impregnation amount ratio (?a) {% }=impregnation depth (s)/(membrane thickness (t1) of separating layer)×100]??(A).

Abstract: A gas separation membrane containing a support and a separating layer formed on the support, the separating layer containing a main body and a hydrophilic layer; the main body being disposed on the side of the support; the hydrophilic layer being disposed on the far side of the support and containing a hydrophilic polymer.

Abstract: A gas separation membrane, containing: a support; and a separating layer formed on the support, the separating layer containing a resin; the separating layer containing, at the side thereof opposite to the support, a hydrophilic modification treatment surface, the hydrophilic modification treatment surface involved in a layer having a film thickness of 0.1 ?m or less, and the hydrophilic modification treatment surface provided with a surface contact angle measured by using water thereon in the range of 60 degrees or less.

Abstract: A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked polyimide resin over the gas-permeable supporting layer, in which the crosslinked polyimide resin has structure in which a polyimide compound is crosslinked through a specific crosslinking chain, the specific crosslinking chain has at least one kind of linking group selected from the group consisting of —NRaC(?O)—, —NRbC(?O)O—, —CH2OCH2—, —CH2SCH2—, —OC(?O)O—, —C(?O)O?N+(Rc)3—, —SO3?N+(Rd)3— and —PO3?N+(Re)3—, and Ra, Rb, Rc, Rd and Re each independently represent a hydrogen atom or a substituent.

Abstract: A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked polyimide resin over the gas-permeable supporting layer, in which the crosslinked polyimide resin has structure in which a polyimide compound is crosslinked and linked, and the polyimide compound is a copolymer having at least an imide group-containing monomer component and a monomer component having a specific polar group; and a module, a gas separation apparatus and a gas separation method using the same.

Abstract: A gas separation composite membrane, containing a gas-permeable supporting layer and a gas separating layer containing a crosslinked polyimide resin over the gas-permeable supporting layer, in which the crosslinked polyimide resin is formed by a polyimide compound being crosslinked by a radically crosslinkable functional group thereof, and a ratio [?] of a crosslinked site to an imide group of the polyimide compound (the number of crosslinked sites/the number of imide groups) in the crosslinked polyimide resin is 0.0001 or more and 0.45 or less; a method of producing the same; and a gas separating module, a gas separation apparatus and a gas separation method using the same.

Abstract: Provided is a gas barrier film produced by according to a roll-to-roll process which is excellent in gas barrier performance. The gas barrier film is produced by providing, as a topmost layer on a second surface of the substrate film, a low-hardness layer having a pencil hardness lower by two or more grades than the pencil hardness of the organic layer; and providing the organic layer on the first surface of the substrate film.

Abstract: A laminate film having excellent barrier property is provided. The laminate film comprises a substrate film, an organic layer and an inorganic layer in that order, wherein the organic layer has a thickness of 300 nm to 2000 nm, the inorganic layer comprises silicon oxide represented by SiOx, wherein x is in a range from 0.9 to 1.5, and the organic layer has a surface satisfying Ra (100 ?m square)<50 nm, Ra (10 ?m square)<2 nm, and 75 nm<Rz (100 ?m square)<300 nm.

Abstract: A laminate film having excellent barrier property is provided. The laminate film comprises a substrate film, an organic layer and an inorganic layer in that order, wherein the organic layer has a thickness of 300 nm to 2000 nm, the inorganic layer comprises silicon oxide represented by SiOx, wherein x is in a range from 0.9 to 1.5, and the organic layer has a surface satisfying Ra (100 ?m square)<50 nm, Ra (10 ?m square)<2 nm, and 75 nm<Rz (100 ?m square)<300 nm.