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Hollow fiber membranes and methods for forming same

United States Patent

March 22, 2016
View the Complete Patent at the US Patent & Trademark Office
The invention provides improved hollow fiber membranes having at least two layers, and methods for forming the same. The methods include co-extruding a first composition, a second composition, and a third composition to form a dual layer hollow fiber membrane. The first composition includes a glassy polymer; the second composition includes a polysiloxane; and the third composition includes a bore fluid. The dual layer hollow fiber membranes include a first layer and a second layer, the first layer being a porous layer which includes the glassy polymer of the first composition, and the second layer being a polysiloxane layer which includes the polysiloxane of the second composition.
Bhandari; Dhaval Ajit (Clifton Park, NY), McCloskey; Patrick Joseph (Watervliet, NY), Howson; Paul Edward (Latham, NY), Narang; Kristi Jean (Clarksville, NY), Koros; William (Atlanta, GA)
General Electric Company (Niskayuna, NY)
13/ 945,459
July 18, 2013
GOVERNMENT RIGHTS STATEMENT This invention was made with U.S. Government support under DE-FE-0007514 awarded by the Department of Energy--National Energy Technology Laboratory. The U.S. Government has certain rights in the invention.