Blended membranes for water vapor transport and methods for preparing same

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United States of America Patent

PATENT NO 10866001
APP PUB NO 20190093907A1
SERIAL NO

16163312

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Water vapor transport membranes for ERV and other water vapor transport applications are provided. The membranes include a substrate and an air impermeable selective layer coated on the substrate, the selective layer including a cellulose derivative and a sulfonated polyaryletherketone. In some embodiments the sulfonated polyaryletherketone is in a cation form and/or the selective layer includes sPEEK and CA in an sPEEK:CA (wt.:wt.) ratio in the range of about 7:3 to 2:3. Methods for making such membranes are provided. The methods include applying a coating solution/dispersion to a substrate and allowing the coating solution/dispersion to dry to form an air impermeable selective layer on the substrate, the coating solution/dispersion including a cellulose derivative and a sulfonated polyarylether ketone. In some embodiments the sulfonated polyaryletherketone is in a cation form and/or the coating solution/dispersion includes sPEEK and CA in an sPEEK:CA (wt.:wt.) ratio in the range of about 7:3 to 2:3.

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Patent Owner(s)

Patent OwnerAddress
DPOINT TECHNOLOGIES INC1455 EAST GEORGIA STREET VANCOUVER V5L 2A9

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Hao Burnaby, CA 1012 6150
Huizing, Ryan Nicholas Vancouver, CA 11 107
Wong, Frankie Kin Bong Vancouver, CA 4 3

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