Patent · US Active

Crosslinked membrane and polymer for making same and method of using membrane

US8394182B2 · kind B2 · utility

10Cited by

20References

34Claims

0Family size

Assignees

UNIVERSITY OF TEXAS SYSTEM · US
CHEVRON U.S.A. INC. · US

Inventors

William J. Koros · Atlanta, US
David A. Wallace · Los Angeles, US
John D. Wind · Berkeley, US
Claudia Staudt-Bickel · Heidelberg, DE
Stephen J. Miller · San Francisco, US

Key dates

Filing date	Dec 17, 2010
Grant date	Mar 12, 2013
Priority date	—
Expiry date	Dec 17, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S55/05
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A composition of and a method of making high performance crosslinked membranes are described. The membranes have a high resistance to plasticization by use of crosslinking. The preferred polymer material for the membrane is a polyimide polymer comprising covalently bonded ester crosslinks. The resultant membrane exhibits a high permeability of CO2 in combination with a high CO2/CH4selectivity. Another embodiment provides a method of making the membrane from a monesterified polymer followed by final crosslinking after the membrane is formed.

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