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특허 상세정보

Separation membrane by controlled annealing of polyimide polymers

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-053/22    B01D-071/64    B01D-071/00    B01D-067/00   
미국특허분류(USC) 095/045; 095/050; 095/051; 095/054; 095/055; 096/004; 096/008; 096/010; 096/013; 096/014; 210/640; 210/500.39; 055/DIG.5
출원번호 US-0070041 (2005-03-02)
등록번호 US-7422623 (2008-09-09)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Cronin,Christopher J.
인용정보 피인용 횟수 : 6  인용 특허 : 24

This abstract discusses membranes needed to separate fluids for the production of oxygen-enriched air, nitrogen-enriched-air, for the separation of carbon dioxide from hydrocarbons, and the separation of hydrogen from various petrochemical and oil refining streams. Membranes are needed that provide a resistance to interaction with process components or contaminants, provide the mechanical strength required to withstand high membrane differential pressures and high process temperatures, and exhibit sufficient maximum strain such that membranes are not bri...


What is claimed is: 1. A membrane for fluid separation prepared by a process comprising the steps of: a) providing a polyimide polymer comprising a plurality of first repeating units of a formula (I), wherein said formula (I) is: in which R1 of said formula (I) is a moiety having a composition selected from the group consisting of a formula (A), a formula (B), a formula (C), and mixtures thereof, wherein said formula (A), said formula (B), and said formula (C) are: and in which R2 of said formula (I) is a moiety having a composition selected from...

이 특허에 인용된 특허 (24)

  1. Shuey Harry F. (San Dimas CA) Wan Wankei (Sarnia CAX). Asymmetric polyimide reverse osmosis membrane, method for preparation of same and use thereof for organic liquid separat. USP1985074532041.
  2. Carlsen Daniel B. (Minneapolis MN) Andrus Robert G. (Minneapolis MN) Hall ; II Robert T. (Welch MN). Dialysate filter including an asymmetric microporous, hollow fiber membrane incorporating a polyimide. USP1997025605627.
  3. Macheras James T. (Quincy MA). Fluid separation membranes prepared from blends of polyimide polymers. USP1997065635067.
  4. Manos ; Philip. Gas separation membrane drying with water replacement liquid. USP1978034080744.
  5. Kohn Rachel S. (Springfield NJ) Coleman Maria R. (Austin TX) Chung Tai-Shung (Randolph NJ). Gas separation membranes comprising miscible blends of polyimide polymers. USP1991105055116.
  6. Ekiner Okan Max. Gas separation membranes of blends of polyethersulfones with aromatic polyimides. USP1999065917137.
  7. Wenthold Randal M. (Belle Plaine MN) Hall ; II Robert T. (Welch MN) Andrus Robert G. (New Hope MN) Cosentino Louis C. (Plymouth MN). Hollow fiber membranes and method of manufacture. USP1997115683584.
  8. Wenthold Randal M. ; Hall ; II Robert T. ; Andrus Robert G. ; Brinda Paul D. ; Cosentino Louis C. ; Reggin Robert F. ; Pigott Daniel T.. Hollow fiber membranes and method of manufacture. USP1998065762798.
  9. Hafez Mahmoud M. (Sarnia CAX) Black Laura E. (Sarnia CAX). Membrane separation of uncoverted carbon fiber precursors from flux solvent and/or anti-solvent. USP1986084606903.
  10. Macheras James Timothy ; Bikson Benjamin ; Nelson Joyce Katz. Method of preparing membranes from blends of polymers. USP1998035733657.
  11. Jeanes Thomas O. (Antioch CA) Summers John D. (Walnut Creek CA) Sanders ; Jr. Edgar S. (Pittsburg CA). Novel alicyclic polyimide gas separation membranes. USP1991014988371.
  12. Ekiner Okan M. (Wilmington DE) Hayes Richard A. (Parkersburg WV) Manos Phillip (Wilmington DE). Novel multicomponent fluid separation membranes. USP1992025085676.
  13. Ekiner Okan M. (Wilmington DE) Hayes Richard A. (Parkersburg WV). Phenylindane-containing polyimide gas separation membranes. USP1991055015270.
  14. Hayes Richard A. (Hockessin DE). Polyimide gas separation membranes. USP1989114880442.
  15. Hayes Richard A. (Hockessin DE). Polyimide gas separation membranes. USP1987114705540.
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  17. White Lloyd Steven. Polyimide membranes for hyperfiltration recovery of aromatic solvents. USP2001016180008.
  18. Okan Max Ekiner. Polymer blend membranes with improved mechanical properties. USP2002056383265.
  19. Black Laura E. (Sarnia CAX) Boucher Heather A. (Sarnia CAX). Process for separating alkylaromatics from aromatic solvents and the separation of the alkylaromatic isomers using membr. USP1986024571444.
  20. Chin Arthur A. ; Knickerbocker Bryan M. ; Trewella Jeffrey C. ; Waldron Terry R. ; White Lloyd S.. Recovery of aromatic hydrocarbons using lubricating oil conditioned membranes. USP2001026187987.
  21. Wan Wan-Kei (Sarnia CAX). Recovery of dewaxing aid using asymmetric polyimide ultrafiltration membrane and method for producing said membrane. USP1989064836927.
  22. LaFreniere Lucie Y. (Brights Grove CAX). Reverse osmosis process for recovery of C3-C6 aliphatic hydrocarbon from oil. USP1992075133867.
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