Poly(ethylene chlorotrifluoroethylene) membranes
First Claim
1. A porous polymeric membrane, the membrane comprising poly(ethylene chlorotrifluoroethylene) and silica, wherein the porous polymeric membrane further comprises a coating comprising a coating agent comprising at least one compound according to formula I or formula II:
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Abstract
Porous polymeric membranes including Halar (poly (ethylene chlorotrifluoroethylene)) and related compounds and the methods of production thereof which avoid the use of toxic solvents. Preferred solvents, coating agents and pore forming agents are citric acid ethyl ester or glycerol triacetate. The membranes may be in the form of a hollow fiber or flat sheet, and may include other agents to modify the properties of the membrane, such as the hydrophilic/hydrophobic balance. Leachable agents may also be incorporated into the membranes.
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11 Claims
- 1. A porous polymeric membrane, the membrane comprising poly(ethylene chlorotrifluoroethylene) and silica, wherein the porous polymeric membrane further comprises a coating comprising a coating agent comprising at least one compound according to formula I or formula II:
Specification