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公开(公告)号：GB2104832B
公开(公告)日：1985-01-23
申请号：GB8218163
申请日：1982-06-23
Applicant: UBE INDUSTRIES
Inventor： MAKINO HIROSHI , KUSUKI YOSHIHIRO , HARADA TAKASHI , SHIMAZAKI HIROSHI , ISIDA TOSIO
Abstract: A modified polymeric membrane having an excellent separating property is produced by applying, to a porous polymeric membrane, a volatile treating liquid containing a modifying agent which consists of at least one member selected from: (A) volatile dissolving organic liquids each capable of dissolving therein at least 1% by weight of the porous polymeric membrane at a temperature of 25 DEG C.; and (B) volatile shrinking organic liquids each capable of causing the porous polymeric membrane to shrink at a shrinkage of 3% or more.
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公开(公告)号：DE3223844A1
公开(公告)日：1983-01-27
申请号：DE3223844
申请日：1982-06-25
Applicant: UBE INDUSTRIES
Inventor： MAKINO HIROSHI , KUSUKI YOSHIHIRO , HARADA TAKASHI , SHIMAZAKI HIROSHI , ISIDA TOSIO
Abstract: A modified polymeric membrane having an excellent separating property is produced by applying, to a porous polymeric membrane, a volatile treating liquid containing a modifying agent which consists of at least one member selected from: (A) volatile dissolving organic liquids each capable of dissolving therein at least 1% by weight of the porous polymeric membrane at a temperature of 25 DEG C.; and (B) volatile shrinking organic liquids each capable of causing the porous polymeric membrane to shrink at a shrinkage of 3% or more.
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公开(公告)号：DE3223075A1
公开(公告)日：1983-01-13
申请号：DE3223075
申请日：1982-06-21
Applicant: UBE INDUSTRIES
Inventor： MAKINO HIROSHI , KUSUKI YOSHIHIRO , HARADA TAKASHI , SHIMAZAKI HIROSHI , ISIDA TOSIO
IPC: B01D53/22 , B01D71/64 , C08G73/00 , C08G73/10 , C08J9/28 , C08L79/08 , B01D13/04 , C01B23/00 , C01B3/50 , C08J5/18
Abstract: An aromatic polyimide separating membrane is produced by a process comprising the steps of: forming a thin film of a dope solution containing an aromatic polyamic acid dissolved in a polar organic solvent at a temperature of approximately 100 DEG C. or less; coagulating the thin dope solution film in a coagulating liquid containing at least 60% by volume of at least one member selected from water and lower aliphatic alcohols at a temperature of 60 DEG C. or less; drying the resultant coagulated aromatic polyamic acid membrane; and heating the dried aromatic polyamic acid membrane at a temperature of 100 DEG C. to 300 DEG C. to convert it to an aromatic polyimide membrane.
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公开(公告)号：CA1190100A
公开(公告)日：1985-07-09
申请号：CA405608
申请日：1982-06-21
Applicant: UBE INDUSTRIES
Inventor： MAKINO HIROSHI , KUSUKI YOSHIHIRO , HARADA TAKASHI , SHIMAZAKI HIROSHI , ISIDA TOSIO
Abstract: PROCESS FOR PRODUCING AROMATIC POLYIMIDE COMPOSITE SEPARATING MEMBRANE An aromatic polyimide composite membrane having an excellent gas-separating property is produced by a process comprising the steps of: coating at least one surface of a substrate consisting of an aromatic polyimide porous membrane with a solution of 0.05% to 10% by weights of an aromatic polyamic acid in an polar organic solvent, which is not capable of dissolving the polyimide porous membrane, at a temperature not exceeding 140.degree.C; after a during drying the resultant thin coating layer of the polyamic acid solution, heating the resultant polyamic acid layer at a temperature of 150.degree.C or more so as to convert the polyamic acid layer to the corresponding polyimide layer.
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公开(公告)号：GB2104905A
公开(公告)日：1983-03-16
申请号：GB8219407
申请日：1982-07-05
Applicant: UBE INDUSTRIES
Inventor： KUSUKI YOSHIHIRO , MAKINO HIROSHI , ISIDA TOSIO , SHINAZAKI HIROSHI , HARADA TAKASHI
Abstract: An aromatic polyimide membrane having an excellent gas-separating property comprises (A) a substrate consisting of a porous membrane comprising at least one aromatic polyimide having at least 80 molar % of at least one type of recurring unit of the formula (I): (I) wherein R is a tetravalent aromatic radical and R1 is a divalent aromatic radical, the porous membrane exhibiting a hydrogen gas permeability (PH2) of 1x10-5 to 5x10-1 cm3/cm2.sec.cmHg and a ratio of hydrogen gas permeability (PH2) to carbon monoxide gas permeability (PCO) of 2 to 5; and (B) 50% or more, based on the weight of the porous membrane substrate, of a gas-separating liquid contained in the porous membrane substrate, the gas-separating liquid being substantially incapable of dissolving therein the porous membrane substrate and having a boiling point of 180 DEG C. or more.
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Patent Agency Ranking
公开(公告)号：GB2104832A
公开(公告)日：1983-03-16
申请号：GB8218163
申请日：1982-06-23
Applicant: UBE INDUSTRIES
Inventor： MAKINO HIROSHI , KUSUKI YOSHIHIRO , HARADA TAKASHI , SHIMAZAKI HIROSHI , ISIDA TOSIO
Abstract: A modified polymeric membrane having an excellent separating property is produced by applying, to a porous polymeric membrane, a volatile treating liquid containing a modifying agent which consists of at least one member selected from: (A) volatile dissolving organic liquids each capable of dissolving therein at least 1% by weight of the porous polymeric membrane at a temperature of 25 DEG C.; and (B) volatile shrinking organic liquids each capable of causing the porous polymeric membrane to shrink at a shrinkage of 3% or more.
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公开(公告)号：GB2102726A
公开(公告)日：1983-02-09
申请号：GB8216797
申请日：1982-06-09
Applicant: UBE INDUSTRIES
Inventor： MAKINO HIROSHI , KUSUKI YOSHIHIRO , SHIMAZAKI HIROSHI , ISIDA TOSIO , HARADA TAKASHI
Abstract: An aromatic polyimide separating membrane is produced by a process comprising the steps of: forming a thin film of a dope solution containing an aromatic polyamic acid dissolved in a polar organic solvent at a temperature of approximately 100 DEG C. or less; coagulating the thin dope solution film in a coagulating liquid containing at least 60% by volume of at least one member selected from water and lower aliphatic alcohols at a temperature of 60 DEG C. or less; drying the resultant coagulated aromatic polyamic acid membrane; and heating the dried aromatic polyamic acid membrane at a temperature of 100 DEG C. to 300 DEG C. to convert it to an aromatic polyimide membrane.
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公开(公告)号：GB2104411A
公开(公告)日：1983-03-09
申请号：GB8218983
申请日：1982-07-01
Applicant: UBE INDUSTRIES
Inventor： MAKINO HIROSHI , HARADA TAKASHI , KUSUKI YOSHIHIRO , SHIMAZAKI HIROSHI , ISIDA TOSIO
Abstract: An aromatic polyimide composite membrane having a satisfactory gas-permeating property and an excellent gas-separating property comprises an aromatic polyimide porous membrane substrate and at least one coating layer which has been prepared (A) by coating at least one surface of the substrate with a dilute dope solution containing 0.01 to 5 parts by weight of a soluble aromatic polyimide and/or polyamic acid dissolved in a solvent which consists essentially of 100 parts by weight of a base component incapable of dissolving therein the substrate in an amount of 3% by weight or more and 0 to 15 parts by weight of an additional component capable of dissolving therein the 5% by weight or more of the aromatic polymeric material and compatible with the base component; and (B) by gradually evaporating the solvent from the coated dilute dope solution layer.
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公开(公告)号：DE3225837A1
公开(公告)日：1983-02-03
申请号：DE3225837
申请日：1982-07-09
Applicant: UBE INDUSTRIES
Inventor： MAKINO HIROSHI , KUSUKI YOSHIHIRO , HARADA TAKASHI , SHIMAZAKI HIROSHI , ISIDA TOSIO
Abstract: An aromatic polyimide membrane having an excellent gas-separating property comprises (A) a substrate consisting of a porous membrane comprising at least one aromatic polyimide having at least 80 molar % of at least one type of recurring unit of the formula (I): (I) wherein R is a tetravalent aromatic radical and R1 is a divalent aromatic radical, the porous membrane exhibiting a hydrogen gas permeability (PH2) of 1x10-5 to 5x10-1 cm3/cm2.sec.cmHg and a ratio of hydrogen gas permeability (PH2) to carbon monoxide gas permeability (PCO) of 2 to 5; and (B) 50% or more, based on the weight of the porous membrane substrate, of a gas-separating liquid contained in the porous membrane substrate, the gas-separating liquid being substantially incapable of dissolving therein the porous membrane substrate and having a boiling point of 180 DEG C. or more.
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公开(公告)号：DE3225618A1
公开(公告)日：1983-02-03
申请号：DE3225618
申请日：1982-07-08
Applicant: UBE INDUSTRIES
Inventor： MAKINO HIROSHI , KUSUKI YOSHIHIRO , HARADA TAKASHI , SHIMAZAKI HIROSHI , ISIDA TOSIO
Abstract: An aromatic polyimide composite membrane having a satisfactory gas-permeating property and an excellent gas-separating property comprises an aromatic polyimide porous membrane substrate and at least one coating layer which has been prepared (A) by coating at least one surface of the substrate with a dilute dope solution containing 0.01 to 5 parts by weight of a soluble aromatic polyimide and/or polyamic acid dissolved in a solvent which consists essentially of 100 parts by weight of a base component incapable of dissolving therein the substrate in an amount of 3% by weight or more and 0 to 15 parts by weight of an additional component capable of dissolving therein the 5% by weight or more of the aromatic polymeric material and compatible with the base component; and (B) by gradually evaporating the solvent from the coated dilute dope solution layer.
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