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"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Process for increasing the selectivity of asymmetric membranes

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-053/22    B01D-071/64   
미국특허분류(USC) 55/16 ; 55/68 ; 55/158 ; 55/528
출원번호 US-0048636 (1987-05-11)
우선권정보 DE-3615649 (1986-05-09)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 5  인용 특허 : 13
초록

A method for producing an improved membrane for separating gases in mixtures including forming an integral, asymmetric polyether imide membrane, treating the membrane with at least one organic fluid which is a solvent or swelling agent for polyether imide, and removing the organic fluid from the membrane by evaporation to obtain a tubular, flat or hollow fiber membrane exhibiting significantly higher selectivity than an untreated membrane.

대표
청구항

A method for producing integral, asymmetric membranes for separating gases in mixture, comprising: mixing together a polyether imide membrane forming polymer which forms membranes that are permeable to at least one gas in a mixture of gases, a volatile solvent for said polymer having a lower boiling point than any other component in the mixture, and an organic liquid swelling agent in which said polymer is not soluble and which does not react with either said polymer or said solvent, to form a pourable liquid mixture; spreading said liquid mixture to for...

이 특허에 인용된 특허 (13)

  1. Makino Hiroshi (Ichihara JPX) Kusuki Yoshihiro (Ichihara JPX) Harada Takashi (Ichihara JPX) Shimazaki Hiroshi (Ichihara JPX) Isida Tosio (Ichihara JPX). Aromatic polyimide composite separating membrane. USP1985074528004.
  2. Makino Hiroshi (Ichihara JPX) Kusuki Yoshihiro (Ichihara JPX) Harada Takashi (Ichihara JPX) Shimazaki Hiroshi (Ichihara JPX) Isida Tosio (Ichihara JPX). Aromatic polyimide gas-separating membrane. USP1984104474858.
  3. Malon Raymond F. (Edmundson MO) Zampini Anthony (St. Louis MO). Asymmetric gas separation membranes. USP1984124486202.
  4. Malon Raymond F. (Edmundson MO) Zampini Anthony (St. Louis MO). Asymmetric gas separation membranes. USP1984094472175.
  5. Malon Raymond F. (Edmundson MO) Zampini Anthony (St. Louis MO). Asymmetric gas separation membranes. USP1987034654055.
  6. Dorman Linneaus C. (Midland MI) Meyer Victor E. (Midland MI) Wu Marinda L. (San Ramon CA). Gas separation membranes from polymers containing a hydrocarbon backbone and pendant (hydrocarbylamido)alkyl ester moiet. USP1987094695295.
  7. Peinemann Klaus-Viktor (Lauenburg DEX). Method for producing an integral, asymmetric membrane and the resultant membrane. USP1987064673418.
  8. Browall Warella R. (Scotia NY). Method for sealing breaches in multi-layer ultrathin membrane composites. USP1976093980456.
  9. Henis Jay M. S. (Creve Coeur MO) Tripodi Mary K. (Creve Coeur MO). Multicomponent membranes for gas separations. USP1980104230463.
  10. Brooks Albert A. (St. Louis MO) Fried Joel R. (Cincinnati OH) Henis Jay M. S. (Creve Coeur MO) Zampini Anthony (St. Louis MO) Raucher Daniel (St. Louis MO). Permeation modified gas separation membranes. USP1986034575385.
  11. Makino Hiroshi (Ichihara JPX) Kusuki Yoshihiro (Ichihara JPX) Harada Takashi (Ichihara JPX) Shimazaki Hiroshi (Ichihara JPX) Isida Tosio (Ichihara JPX). Process for modifying porous polymeric membrane. USP1984124486376.
  12. Kulprathipanja Santi (Hoffman Estates IL). Separation of polar gases from nonpolar gases. USP1986084606740.
  13. Browall Warella R. (Scotia NY). Ultrathin polyetherimide membrane and gas separation process. USP1979054156597.