Patent · US Expired

Process of making multicomponent or asymmetric gas separation membranes

US5468430A · kind A · utility

16Cited by
13References
2Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 19, 1994
Grant dateNov 21, 1995
Priority date—
Expiry dateMay 19, 2014

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02C20/40
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A process for making gas separation membranes having enhanced selectivity for a mixture of gases is disclosed. The membranes may be asymmetric or multicomponent. The membranes surprisingly provide selectivity for gases in a mixture that approaches the relative selectivity of the single gas components. Preferably the membrane provides selectivity for a mixture of gases which is at least 65%, preferably 80%, of the relative selectivity of the corresponding single gases.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.