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US 11,654,403 B2Granted
Porous fluorine-based resin composite membrane and manufacturing method therefor
AssigneeLG Chem, Ltd.
InventorsSin Woo Kim, Seijung Park, Byeong In Ahn, Hyun Seong Ko
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Abstract
The present disclosure relates to a porous fluorine-based resin composite membrane having excellent water repellency and oil repellency, and a method for producing the same.
Claims8
A method for producing a porous fluorine-based resin composite membrane comprising the steps of:
- providing a porous fluorine-based resin layer having pores therein,
- preparing a coating solution including a (co)polymer containing a repeating unit derived from a perfluoroalkyl acrylate having 1 to 10 carbon atoms and a perfluoroalkanoic acid having 3 to 10 carbon atoms,
- coating the coating solution onto at least one surface of the porous fluorine-based resin layer and an outer surface of the pores to produce a coating layer, and
- decomposing the perfluoroalkanoic acid having 3 to 10 carbon atoms from the coating layer.
1 more element
Dependencies are inferred from the claim text.