WO2002049747A3 - Copolyimide gas separation membranes - Google Patents

Copolyimide gas separation membranes Download PDF

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Publication number
WO2002049747A3
WO2002049747A3 PCT/US2001/043689 US0143689W WO0249747A3 WO 2002049747 A3 WO2002049747 A3 WO 2002049747A3 US 0143689 W US0143689 W US 0143689W WO 0249747 A3 WO0249747 A3 WO 0249747A3
Authority
WO
WIPO (PCT)
Prior art keywords
gas
membrane
gas separation
copolyimide
separation membranes
Prior art date
Application number
PCT/US2001/043689
Other languages
French (fr)
Other versions
WO2002049747A2 (en
Inventor
John W Simmons
Original Assignee
Air Liquide
John W Simmons
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Liquide, John W Simmons filed Critical Air Liquide
Priority to AU2002226939A priority Critical patent/AU2002226939A1/en
Priority to JP2002551079A priority patent/JP2004516131A/en
Priority to CA002431731A priority patent/CA2431731A1/en
Priority to EP01995889A priority patent/EP1351757A2/en
Publication of WO2002049747A2 publication Critical patent/WO2002049747A2/en
Publication of WO2002049747A3 publication Critical patent/WO2002049747A3/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/58Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
    • B01D71/62Polycondensates having nitrogen-containing heterocyclic rings in the main chain
    • B01D71/64Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D53/228Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1039Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors comprising halogen-containing substituents
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1042Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1057Polyimides containing other atoms than carbon, hydrogen, nitrogen or oxygen in the main chain
    • C08G73/1064Polyimides containing other atoms than carbon, hydrogen, nitrogen or oxygen in the main chain containing sulfur
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1067Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1075Partially aromatic polyimides
    • C08G73/1082Partially aromatic polyimides wholly aromatic in the tetracarboxylic moiety
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02CCAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00Capture or disposal of greenhouse gases
    • Y02C20/40Capture or disposal of greenhouse gases of CO2

Abstract

A gas separation membrane is formed from a copolyimide produced by copolymerization of monomers which include o-tolidine sulfone, at least one other hydrophilic diamine and 2,2-bis(3,4-dicarboxyphenyl) hexafluoropropane dianhydride. One or more additional aromatic dianhydrides can optionally be included. The novel membrane exhibits an excellent combination of high selectivity of gases to be separated from a gas mixture, high permeability and strong solvent resistance to hydrocarbon chemicals. The membrane is therefore useful in separating gases from gas mixtures in which vapor or liquid hydrocarbon contaminants are present, for example in the separation of carbon dioxide from methane and/or nitrogen in the purification of natural gas.
PCT/US2001/043689 2000-12-19 2001-11-16 Copolyimide gas separation membranes WO2002049747A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2002226939A AU2002226939A1 (en) 2000-12-19 2001-11-16 Copolyimide gas separation membranes
JP2002551079A JP2004516131A (en) 2000-12-19 2001-11-16 Copolyimide gas separation membrane
CA002431731A CA2431731A1 (en) 2000-12-19 2001-11-16 Copolyimide gas separation membranes
EP01995889A EP1351757A2 (en) 2000-12-19 2001-11-16 Copolyimide gas separation membranes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/740,286 US6383258B1 (en) 2000-12-19 2000-12-19 Copolyimide gas separation membranes
US09/740,286 2000-12-19

Publications (2)

Publication Number Publication Date
WO2002049747A2 WO2002049747A2 (en) 2002-06-27
WO2002049747A3 true WO2002049747A3 (en) 2003-01-23

Family

ID=24975851

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/043689 WO2002049747A2 (en) 2000-12-19 2001-11-16 Copolyimide gas separation membranes

Country Status (7)

Country Link
US (1) US6383258B1 (en)
EP (1) EP1351757A2 (en)
JP (1) JP2004516131A (en)
CN (1) CN1248773C (en)
AU (1) AU2002226939A1 (en)
CA (1) CA2431731A1 (en)
WO (1) WO2002049747A2 (en)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7011694B1 (en) * 2001-05-14 2006-03-14 University Of Kentucky Research Foundation CO2-selective membranes containing amino groups
SG108269A1 (en) * 2001-08-15 2005-01-28 Inst Materials Research & Eng Chemical modification of polyimides
JP2003062422A (en) * 2001-08-27 2003-03-04 Inst Of Physical & Chemical Res Gas separation membrane and method for manufacturing the same
US20030126990A1 (en) 2001-12-20 2003-07-10 Koros William J. Crosslinked and crosslinkable hollow fiber membrane and method of making same
US20030131731A1 (en) 2001-12-20 2003-07-17 Koros William J. Crosslinked and crosslinkable hollow fiber mixed matrix membrane and method of making same
US6740728B2 (en) * 2002-05-24 2004-05-25 Praxair Technology, Inc. Methods for the preparation of polyesters, poly(ester amide)s and poly(ester imide)s and uses of the materials obtained therefrom
US7094505B2 (en) * 2002-10-29 2006-08-22 Toppan Photomasks, Inc. Photomask assembly and method for protecting the same from contaminants generated during a lithography process
US7018445B2 (en) * 2002-12-02 2006-03-28 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Polyimide blends for gas separation membranes
JP4507894B2 (en) 2005-01-24 2010-07-21 宇部興産株式会社 Asymmetric hollow fiber gas separation membrane and gas separation method
JP4835020B2 (en) * 2005-03-28 2011-12-14 宇部興産株式会社 Asymmetric hollow fiber gas separation membrane and gas separation method
JP4857588B2 (en) * 2005-04-15 2012-01-18 宇部興産株式会社 Asymmetric hollow fiber gas separation membrane and gas separation method
JP4857593B2 (en) * 2005-04-25 2012-01-18 宇部興産株式会社 Asymmetric hollow fiber gas separation membrane and gas separation method
JP4857592B2 (en) * 2005-04-25 2012-01-18 宇部興産株式会社 Asymmetric hollow fiber gas separation membrane and gas separation method
US7754281B2 (en) * 2005-07-18 2010-07-13 Lawrence Livermore National Security, Llc Preparation of membranes using solvent-less vapor deposition followed by in-situ polymerization
CN100593520C (en) * 2006-05-26 2010-03-10 中国科学院化学研究所 Polyimide copolymer infiltration vaporization separation film for treating phenols-containing waste water and preparing method thereof
US8083946B2 (en) * 2006-08-08 2011-12-27 Exxonmobil Research And Engineering Company Chemically cross-linked polymeric membranes and method of use
JP2010500448A (en) * 2006-08-08 2010-01-07 エクソンモービル リサーチ アンド エンジニアリング カンパニー Polymer membranes for separating aromatic and aliphatic compounds
US8129437B2 (en) * 2006-10-19 2012-03-06 Shell Oil Company Process for the extraction of hydrogen from a gas mixture
US8495232B2 (en) * 2007-07-10 2013-07-23 Qualcomm Incorporated Methods and apparatus for supporting broadcast communications in a peer to peer network
US8221531B2 (en) 2007-12-31 2012-07-17 Chevron U.S.A. Inc. Crosslinked polyimide membrane, method for making the same using organic titanate catalysts to facilitate crosslinking and method of using the membrane for fluid separation
KR100932765B1 (en) * 2008-02-28 2009-12-21 한양대학교 산학협력단 Polyimide-polybenzoxazole copolymer, preparation method thereof, and gas separation membrane comprising the same
MX2010012599A (en) * 2008-05-19 2011-04-26 Iucf Hyu Hollow fiber, dope solution composition for forming a hollow fiber, and method for manufacturing a hollow fiber using the same.
WO2009142433A2 (en) * 2008-05-19 2009-11-26 한양대학교 산학협력단 Hollow fiber, dope solution composition for forming a hollow fiber, and method for manufacturing a hollow fiber using the same
CA2640517A1 (en) * 2008-05-19 2009-11-19 Industry-University Cooperation Foundation, Hanyang University Polyamic acids dope composition, preparation method of hollow fiber using the same and hollow fiber prepared therefrom
CA2640545A1 (en) * 2008-05-19 2009-11-19 Industry-University Cooperation Foundation, Hanyang University Polyimides dope composition, preparation method of hollow fiber using the same and hollow fiber prepared therefrom
CN102227252B (en) * 2008-09-30 2014-08-20 宇部兴产株式会社 Asymmetric gas separation membrane, and gas separation method
WO2011024908A1 (en) 2009-08-26 2011-03-03 イビデン株式会社 Gas separation membrane
JP5746150B2 (en) * 2010-04-13 2015-07-08 イビデン株式会社 Gas separation membrane
JP5136667B2 (en) * 2011-03-17 2013-02-06 宇部興産株式会社 Asymmetric hollow fiber gas separation membrane and gas separation method
JP5099242B2 (en) * 2011-03-17 2012-12-19 宇部興産株式会社 Asymmetric hollow fiber gas separation membrane and gas separation method
JP6142730B2 (en) * 2012-09-25 2017-06-07 宇部興産株式会社 Asymmetric hollow fiber gas separation membrane and gas separation method
JP2014188489A (en) * 2013-03-28 2014-10-06 Hitachi Ltd Method for calculating installation performance of reverse osmosis membrane, apparatus for calculating installation performance of reverse osmosis membrane, and its program
US9126155B2 (en) * 2013-09-27 2015-09-08 Uop Llc Self cross-linkable and self cross-linked aromatic polyimide membranes for separations
US9962646B2 (en) 2016-01-04 2018-05-08 Saudi Arabian Oil Company Sour gas feed separations and helium recovery from natural gas using block co-polyimide membranes
KR101833754B1 (en) * 2016-04-29 2018-04-13 한국과학기술연구원 Bromination/debromination-induced thermally crosslinked gas separation polymeric membranes and method for fabricating the same
WO2018142375A1 (en) * 2017-02-06 2018-08-09 King Abdullah University Of Science And Technology Polyimide blends, methods of making each and methods of use
KR102064297B1 (en) 2017-02-16 2020-01-09 삼성에스디아이 주식회사 Photosensitive resin composition, black pixel defining layer using the same and display device
US10913036B2 (en) 2017-05-31 2021-02-09 Saudi Arabian Oil Company Cardo-type co-polyimide membranes for sour gas feed separations from natural gas
US20210147628A1 (en) * 2019-11-19 2021-05-20 Kyoto University Hydrophilic polyimide, membranes prepared therefrom, and uses thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446947A2 (en) * 1990-03-15 1991-09-18 Ube Industries, Ltd. Gas separating asymmetric membrane
US5286539A (en) * 1991-09-10 1994-02-15 Ube Industries, Ltd. Gas separating asymmetric membrane
US5725633A (en) * 1995-06-30 1998-03-10 Praxair Technology, Inc. Sulfonated polyimide gas separation membranes

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61133117A (en) * 1984-11-30 1986-06-20 Ube Ind Ltd Separation of gaseous carbon dioxide
JPS61133118A (en) 1984-11-30 1986-06-20 Ube Ind Ltd Polyimide membrane for gas separation
US4705540A (en) 1986-04-17 1987-11-10 E. I. Du Pont De Nemours And Company Polyimide gas separation membranes
US4717394A (en) * 1986-10-27 1988-01-05 E. I. Du Pont De Nemours And Company Polyimide gas separation membranes
US4717393A (en) * 1986-10-27 1988-01-05 E. I. Du Pont De Nemours And Company Polyimide gas separation membranes
US4880442A (en) * 1987-12-22 1989-11-14 E. I. Du Pont De Nemours And Company Polyimide gas separation membranes
US5055116A (en) * 1989-05-22 1991-10-08 Hoechst Celanese Corp. Gas separation membranes comprising miscible blends of polyimide polymers
US4932982A (en) * 1989-06-01 1990-06-12 E. I. Du Pont De Nemours And Company Copolyimide gas separation membranes derived from substituted phenylene diamines and substituted methylene dianilines
US4981497A (en) * 1989-06-01 1991-01-01 E. I. Du Pont De Nemours And Company Amine-modified polyimide membranes
JP2855668B2 (en) * 1989-07-05 1999-02-10 三菱化学株式会社 Polyimide separation membrane
US5074891A (en) * 1989-07-27 1991-12-24 Hoechst Celanese Corp. Method of gas separation and membranes therefor
FR2650755B1 (en) * 1989-08-14 1991-10-31 Inst Francais Du Petrole GAS SEPARATION MEMBRANE
US5042992A (en) 1990-03-21 1991-08-27 W. R. Grace & Co.-Conn. Gas separation material
US5061298A (en) * 1990-06-13 1991-10-29 Air Products And Chemicals, Inc. Gas separating membranes formed from blends of polyimide polymers
US5042993A (en) * 1990-07-24 1991-08-27 Air Products And Chemicals, Inc. Gas separating membranes from polyimide polymers
US5178650A (en) * 1990-11-30 1993-01-12 E. I. Du Pont De Nemours And Company Polyimide gas separation membranes and process of using same
US5076817A (en) * 1990-11-30 1991-12-31 E. I. Du Pont De Nemours And Company Polyamide gas separation membranes and process of using same
US5391219A (en) * 1991-04-15 1995-02-21 Nitto Denko Corporation Method for the separation and concentration of gas using a composite or asymmetric fluorine-containing polyimide membrane
JPH057749A (en) * 1991-04-15 1993-01-19 Nitto Denko Corp Fluorine-containing polyimide type composite membrane and asymmetric membrane, preparation of them and gas separating/concentrating method using said membranes
US5234471A (en) * 1992-02-04 1993-08-10 E. I. Du Pont De Nemours And Company Polyimide gas separation membranes for carbon dioxide enrichment
US5266100A (en) * 1992-09-02 1993-11-30 E. I. Du Pont De Nemours And Company Alkyl substituted polyimide, polyamide and polyamide-imide gas separation membranes
US5232472A (en) 1992-11-03 1993-08-03 E. I. Du Pont De Nemours And Company Polyimide and polyamide-imide gas separation membranes
US5320650A (en) 1993-05-04 1994-06-14 E. I. Du Pont De Nemours And Company Fluorinated aromatic polyimide, polyamide and polyamide-imide gas separation membranes
US5591250A (en) 1993-08-09 1997-01-07 Gas Research Institute Material and process for separating carbon dioxide from methane
US5334697A (en) * 1993-10-04 1994-08-02 L'air Liquide, S.A. Polyimide gas separation membranes
US5702503A (en) * 1994-06-03 1997-12-30 Uop Composite gas separation membranes and making thereof
US5618334A (en) * 1995-06-30 1997-04-08 Praxair Technology, Inc. Sulfonated polyimide gas separation membranes
JPH1085571A (en) * 1996-07-26 1998-04-07 Dainippon Ink & Chem Inc Separating membrane
KR0184379B1 (en) * 1996-11-08 1999-04-15 박원훈 Separation membranes prepared from polyamide polymers having 2, 2'-bis(trifluoromethyl) biphenyl units and process of separating gaseous mixtures using them
US5969087A (en) * 1997-04-04 1999-10-19 Nitto Denko Corporation Polyimide, a method for manufacturing the same, a gas separation membrane using the polyimide and a method for manufacturing the same
US5928410A (en) * 1997-12-09 1999-07-27 Texaco Inc. Supported gas separation membrane, process for its manufacture and use of the membrane in the separation of gases

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446947A2 (en) * 1990-03-15 1991-09-18 Ube Industries, Ltd. Gas separating asymmetric membrane
US5286539A (en) * 1991-09-10 1994-02-15 Ube Industries, Ltd. Gas separating asymmetric membrane
US5725633A (en) * 1995-06-30 1998-03-10 Praxair Technology, Inc. Sulfonated polyimide gas separation membranes

Also Published As

Publication number Publication date
JP2004516131A (en) 2004-06-03
CN1248773C (en) 2006-04-05
CN1482941A (en) 2004-03-17
CA2431731A1 (en) 2002-06-27
EP1351757A2 (en) 2003-10-15
AU2002226939A1 (en) 2002-07-01
US6383258B1 (en) 2002-05-07
WO2002049747A2 (en) 2002-06-27

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