초록 ▼

A gas-permeable laminate for separating a specific gas from a gaseous mixture comprising a gas-permeable membrane having excellent selectivity for the specified gas and a porous support supporting said membrane, said gas-permeable membrane being a multilayer laminated membrane comprising at least a

A gas-permeable laminate for separating a specific gas from a gaseous mixture comprising a gas-permeable membrane having excellent selectivity for the specified gas and a porous support supporting said membrane, said gas-permeable membrane being a multilayer laminated membrane comprising at least a first and a second ultrathin membrane having excellent selectivity for the specified gas and a third ultrathin membrane of a different material from the materials of the first and second ultrathin membranes and located between the first and second ultrathin membranes, the material of the third ultrathin membrane having a higher permeation coefficient with respect to the specified gas than the materials of the first and second ultrathin membranes.

대표청구항 ▼

A gas-permeable laminate for separating a specific gas from a gaseous mixture comprising a gas-permeable membrane having excellent selectivity for the specified gas and a porous support supporting said membrane thereon, said gas-permeable membrane being a multilayer laminated membrane comprising at

A gas-permeable laminate for separating a specific gas from a gaseous mixture comprising a gas-permeable membrane having excellent selectivity for the specified gas and a porous support supporting said membrane thereon, said gas-permeable membrane being a multilayer laminated membrane comprising at least a first and a second ultrathin membrane having excellent selectivity for the specified gas and a third ultrathin membrane of a different material from the materials of the first and second ultrathin membranes and located between the first and second ultrathin membranes, wherein the first and second ultrathin membranes are produced from an addition polymer of at least one unsaturated compound selected from the group consisting of hydrocarbon compounds and silane compounds having a polymerizable carbon-carbon double or triple bond, the third ultrathin membrane is produced from a member selected from the group consisting of polydimethylsiloxane, a polysiloxane/polycarbonate copolymer, a polysiloxane/styrene copolymer, a polysiloxane/polybutadiene copolymer, a polysiloxane/polyvinyltrimethylsilane copolymer, a polytetramethyldisiloxane/ethylene copolymer, a polydimethylsiloxane/siliphenylene copolymer, a polydimethylsiloxane/alkylene oxide copolymer, polysiliphenylene, a crosslinked polymer of oligohydroxystyrene and siloxane having a group reactive with the hydroxyl group of the oligohydroxystyrene, and poly(vinylmethyldimethylsiloxane/methyl hydrogen dimethylsiloxane), the material of the third ultrathin membrane has a higher permeation coefficient with respect to the specified gas than the materials of the first and second ultrathin membrane, and said porous support has substantially no gas-separating ability in the form of said gas-permeable laminate.