Monsanto Company

Permea, Inc.

Erwin R Stedronsky

Jay M Henis

Milton K Murphy

Donald Joseph Stookey

Paul William Kramer

Glassy polymeric gas separation membranes are chemically modified throughout the thickness thereof. Such membranes manifest selectivity for a pair of gases which is greater than the intrinsic selectivity of the glassy polymeric material and which is greater than the equilibrium intrinsic selectivity of the chemically modified glassy polymeric material.

Membranes having enhanced selectivity and method of producing such

Surface modified support membranes and a process therefor are disclosed wherein the support membrane has a substantially uniform layer of hydrogel deposited on essentially the entire surface area thereof.

Process for surface modifying a support membrane and product produced

A surface-modified support membrane is disclosed wherein the membrane coating is resistant to cleaning agents such as surfactants and solvents. Also disclosed is a process for preparing such membranes. The subject membranes have a modifying polymer irreversibly adsorbed onto essentially all of the surface area thereof, which modifying polymer is uniformly cross-linked.

Growing community of inventors

Richmond Heights, MO, United States of America

Erwin R Stedronsky