Gas separations utilizing glassy polymer membranes at sub-ambient temperatures

US5679133A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• David J. Moll · Midland, US
• Alan F. Burmester · Midland, US
• Thomas C. Young · Lake Jackson, US
• Kent B. McReynolds · Midland, US
• James E. Clark · Midland, US
• Charles Hotz · San Mateo, US
• Ritchie A. Wessling · Midland, US
• George J. Quarderer · Midland, US
• Ronald M. Lacher · Midland, US
• Stephen E. Bales · Midland, US
• Henry N. Beck · Walnut Creek, US
• Thomas O. Jeanes · Antioch, US
• Bethanne L. Smith · Freeland, US

Key dates

• Filing date: Aug 18, 1994
• Grant date: Oct 21, 1997
• Expiry date: Aug 18, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/129
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

This invention relates to a method of and apparatus for separating component gases in a gas mixture employing a glassy polymer membrane at temperatures of 5.degree. C. or less so as to achieve superior separation of gas components.