Block polyurethane-ether and polyurea-ether gas separation...

Details Block polyurethane-ether and polyurea-ether gas separation... Block polyurethane-ether and polyurea-ether gas separation...

2005-01-18

2005-01-18

Spitzer, Robert H. (Department: 1724)

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

C095S051000, C095S052000, C096S013000, C096S014000

Reexamination Certificate

active

06843829

ABSTRACT:
Gas separation membranes formed from polyether-urethane or polyether-urea block copolymers are useful for separating gases from gas mixtures. The membranes and processes are especially suited for separating polar gases from mixtures that contain polar and non-polar species. The novel membranes exhibit good permeability and permselectivity, as well as durability, making them well suited for industrial applications such as removal of acid gases from natural gas and removal of carbon dioxide from synthesis gas.

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