Abstract: A gas separation asymmetric membrane includes a porous layer having gas permeability; and a compact layer having gas separation capability which is formed on the porous layer in which the gas separation asymmetric membrane is formed using a polyimide compound which has a structural unit represented by Formula (I) and at least one structural unit selected from a structural unit represented by Formula (II) or a structural unit represented by Formula (III) and in which the viscosity, at 25° C., of a solution obtained by dissolving the polyimide compound in N-methylpyrrolidone at a concentration of 5% by mass is in a range of 2.2 to 22.0 mPa·sec, in the formula, X1 represents a group having a structure represented by Formula (I-a) or (I-b).

Abstract: A gas separation membrane has a gas separation layer containing a cellulose resin, and an organopolysiloxane compound layer disposed on the gas separation layer in which Si ratio of the organopolysiloxane compound layer after immersion in chloroform to the organopolysiloxane compound layer before immersion in chloroform, the Si ratio being calculated by Mathematical expression (I), is 0.6 to 1.0.

Abstract: A gas separation membrane has a gas separation layer containing a poly(benzoxazole-imide) compound in which the poly(benzoxazole-imide) compound having structural units represented by General formulae (I) and (II), or structural units represented by General formulae (I), (II) and (III) satisfies a specific molar quantity condition. In the formulae, X and Y each represent a single bond or a specific divalent linking group; L represents a specific divalent linking group including a phenylene group; and R represents a specific group. A gas separation module and a gas separation method use the gas separation membrane. A gas separation apparatus includes the gas separation module.

Abstract: A functional polymer membrane of the present invention contains a polymer containing at least a structure represented by the following Formula (I), a method for producing the membrane, and an ion exchange apparatus: wherein R1 and R2 each represent a hydrogen atom or an alkyl group; R3 to R6 each represent a substituent; R3 to R6 may be bonded to each other and form a ring; A1 to A4 each represent a single bond or a divalent linking group; M1 represents a hydrogen ion, an organic base ion, or a metal ion; J1 represents a single bond, —O—, —S—, —SO2—, —CO—, —CR8R9—, or an alkenylene group, and R8 and R9 each represent a hydrogen atom, an alkyl group, or a halogen atom; and k1, k2, k3, k4, n1, n2, m1, m2, p, and q each represent a particular integer.

Abstract: There are provided an ion-exchange polymer including a structure represented by the following General Formula (1) and a production method therefor, an electrolyte membrane and a production method therefor, and a composition for producing an ion-exchange polymer. In a case where the sum of a1, b1, and c1 is 1.000, a1 is 0.000 to 0.750, b1 is 0.240 to 0.990, and c1 is 0.001 to 0.100. L represents an alkylene group, L1 and L2 each represent a divalent linking group, R1 is a hydrogen atom or an alkyl group, R2 and R3 each represent an alkyl group or an allyl group, X1? and X2? each represent an inorganic or organic anion, and Y represents a halogen atom. Z1 represents —O— or —NRa—, and Ra represents a hydrogen atom or an alkyl group.

Abstract: A gas separation membrane including a gas separation layer contains a crosslinked polyimide compound. In the gas separation membrane, and a gas separation module, a gas separator, and a gas separation method obtained by using the gas separation membrane, the crosslinked polyimide compound has a specific structural portion. A composition for forming a gas separation layer suitable for forming a gas separation layer of the gas separation membrane; a method of producing a gas separation membrane obtained by using this composition; a polyimide compound suitable as a raw material of a gas separation layer of the gas separation membrane; and a diamine monomer suitable for synthesis of this polyimide compound are provided.

Abstract: A gas separation membrane includes a gas separation layer that contains the polyimide compound having the structural portion represented by Formula (1). A gas separation module includes the gas separation membrane, a gas separator includes the gas separation module, and a gas separation method is performed using the gas separation membrane. A1 and A2 represent a linking site, a hydrogen atom, a halogen atom, a carboxy group, a carbamoyl group, an acyl group, an acyloxy group, a sulfo group, a sulfamoyl group, an alkylsulfinyl group, an arylsulfinyl group, an alkylsulfonyloxy group, an alkoxycarbonyl group, a non-fluorinated alkyl group, or an aryl group. Here, at least one of A1 or A2 represents a linking site.

Abstract: There is provided a curable composition including a water-soluble acrylamide monomer represented by the following General Formula (1-1) or (1-2), a polymer functional cured product, a water-soluble acrylamide compound, and a method for manufacturing the same. In General Formulas (1-1) and (1-2), m represents an integer of 2 or greater, and L represents an m-valent group or a single bond. Here, in a case where L is a single bond, m is 2. L1 and L2 each represent a single bond or a divalent linking group. R1 to R5 each represent a hydrogen atom or a substituent, and may be bonded to each other to form a ring, and may be bonded to L, L1, or L2 to form a ring. Either one of RA and RB represents a group represented by General Formula (a), and the other represents a group represented by General Formula (b).

Abstract: The present invention provides a polymer functional film obtained by polymerizing and curing a composition including (A) a styrene-based monomer represented by Formula (HSM); (B) a crosslinking agent represented by Formula (CL); and (C) a polymerization initiator represented by Formula (PI-1) or (PI-2), and a method for producing the same: in which R1 represents a halogen atom or —N+(R2)(R3)(R4)(X1?); n1 represents an integer from 1 to 10; here, R2 to R4 each independently represent a particular substituent; X1? represents an organic or inorganic anion; L1 represents an alkylene group or an alkenylene group; Ra, Rb, Rc and Rd each independently represent a particular substituent; n2 and n4 each independently represent an integer from 1 to 10; X2? and X3? each independently represent an organic or inorganic anion; and R5 to R10 each represent a hydrogen atom or a particular substituent.

Abstract: Provided is a functional polymer membrane having a structure represented by the following Formula (1) and a structure represented by the following Formula (2), in which an ion exchange capacity is 2.0 meq/g to 7.

Abstract: Provided are a curable composition including an amide compound that is represented by Formula (1) below and of which a density of sulfonic acid is 3.9 milliequivalent/g or greater. m represents an integer of 1 or greater, n represents an integer of 2 or greater, L1 represents a m+1-valent linking group, and L2 represents an n-valent linking group. R1 represents a hydrogen atom or an alkyl group, and R2 represents —SO3?M+ or —SO3R3 (R3 represents an alkyl group or an aryl group). Here, in a case where there are plural R2's, not all of the R2's are —SO3R3. M+ represents a hydrogen ion, an inorganic ion, or an organic ion.

Abstract: The method for producing a gas separation composite membrane includes applying a mixed liquid containing compounds (a) and (b) below onto a porous support to form a coating film and curing the coating film to form a crosslinked polysiloxane compound layer: (a) a particular crosslinkable polysiloxane compound having a structural unit (a1), a structural unit (a2), and a structural unit (a3) or (a4), and (b) a particular crosslinkable polysiloxane compound having a structural unit (b1), a structural unit (b2), and a structural unit (b3) or (b4), where R1a to R1f and R2a to R2f represent a particular group and * represents a particular linking site.

Abstract: A gas separation membrane includes a gas separation layer containing a polyimide compound having a repeating unit represented by Formula (I), in Formula (I), RI represents a hydrogen atom, an alkyl group, or a halogen atom, Xa represents a sulfamoyl group, an alkoxysulfonyl group, a carboxy group, a hydroxy group, an acyloxy group, or a halogen atom, and R represents a mother nucleus having a specific structure.

Abstract: A gas separation membrane has a gas separation layer containing a cellulose resin, and an organopolysiloxane compound layer disposed on the gas separation layer in which Si ratio of the organopolysiloxane compound layer after immersion in chloroform to the organopolysiloxane compound layer before immersion in chloroform, the Si ratio being calculated by Mathematical expression (I), is 0.6 to 1.0.

Abstract: A gas separation membrane has a gas separation layer containing a poly(benzoxazole-imide) compound in which the poly(benzoxazole-imide) compound having structural units represented by General formulae (I) and (II), or structural units represented by General formulae (I), (II) and (III) satisfies a specific molar quantity condition. In the formulae, X and Y each represent a single bond or a specific divalent linking group; L represents a specific divalent linking group including a phenylene group; and R represents a specific group. A gas separation module and a gas separation method use the gas separation membrane. A gas separation apparatus includes the gas separation module.

Abstract: A functional polymer membrane having a pore volume fraction of 0.6% or more and 3.0% or less by allowing a reaction of curing a composition containing a polymerizable compound (A) and a copolymerizable monomer (B).

Abstract: A gas separation membrane has a gas separation layer containing a crosslinked cellulose resin. The crosslinked cellulose resin has a particular linking structure in a crosslinked structure. The gas separation layer contains an organic solvent in a particular amount.

Abstract: A gas separation asymmetric membrane includes a porous layer having gas permeability; and a compact layer having gas separation capability which is formed on the porous layer in which the gas separation asymmetric membrane is formed using a polyimide compound which has a structural unit represented by Formula (I) and at least one structural unit selected from a structural unit represented by Formula (II) or a structural unit represented by Formula (III) and in which the viscosity, at 25° C., of a solution obtained by dissolving the polyimide compound in N-methylpyrrolidone at a concentration of 5% by mass is in a range of 2.2 to 22.0 mPa·sec, in the formula, X1 represents a group having a structure represented by Formula (I-a) or (I-b).

Abstract: Provided are a curable composition including a compound expressed by General Formula (1) below; a polymerization initiator; and a chain transfer agent, and a cured polymer product. In General Formula (1), m represents an integer of 1 to 4, and n represents an integer of 1 to 4. Here, a sum of m and n is not greater than 5. MA represents a hydrogen ion, an inorganic ion, or an organic ion. Here, an inorganic ion and an organic ion may be bivalent or higher ions. Each of R1 and R2 independently represents a hydrogen atom or an alkyl group.

Abstract: An ion exchange membrane obtained by using an ionic monomer having at least two or more polymerizable functional groups, in which a hydrophobicity index H obtained by an expression below from a monomer for forming an ion exchange resin and a material fixed to the resin in the ion exchange membrane is 1.6 or greater, and a manufacturing method therefor. Hydrophobicity index H=?{(log P of each component)×(molar ratio of each material in resin)}.