Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1990-04-19
1992-03-10
Herbert, Jr., Thomas J.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428220, 4283084, 428422, B32B 108, B32B 2708
Patent
active
050948954
ABSTRACT:
A composite, porous, liquid-permeable article is provided which is a multilayer structure of discrete, bonded layers of porous, expanded polytetrafluoroethylene (EPTFE), which composite has its interior and exterior surfaces coated with a perfluoro ion exchange polymer to render the composite hydrophilic so as to resist gas locking in aqueous media wherein a composite diaphragm made therefrom, may also contain a water-soluble surfactant to assist in initial water penetration into the pores of the composite whereby an improved electrolytic cell is provided having the composite diaphragm as the porous separator in the electrolysis of alkali halide solutions and wherein the diaphragm is also useful as an improved filter medium.
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Branca Phillip A.
Hubis Daniel E.
Mallouk Robert S.
Perry Randal L.
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