Poly(ethylene chlorotrifluoroethylene) membranes

Details Poly(ethylene chlorotrifluoroethylene) membranes Poly(ethylene chlorotrifluoroethylene) membranes

2007-01-31

2009-12-15

Fortuna, Ana M (Department: 1797)

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

C264S048000, C264S049000, C264S171170, C264S171260, C264S173130, C264S173160, C428S308400, C210S500360, C210S500230, C210S502100

Reexamination Certificate

active

07632439

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 membranes, such as the hydrophilic/hydrophilic balance. Leachable agents may also be incorporated into the membranes.

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