ARTIGO COMPOSITO CONFORMADO POROSO EM MULTIPLAS CAMADAS,DIAFRAGMA APERFEICOADO PARA USO EM UMA CELULA ELETROLITICA,MEIO DEFILTRO APERFEICOADO,E,PROCESSO PARA A FABRICACAO DE UM ARTIGO COMPOSITO CONFORMADO POROSO EM MULTIPLAS CAMADAS

ARTIGO COMPOSITO CONFORMADO POROSO EM MULTIPLAS CAMADAS,DIAFRAGMA APERFEICOADO PARA USO EM UMA CELULA ELETROLITICA,MEIO DEFILTRO APERFEICOADO,E,PROCESSO PARA A FABRICACAO DE UM ARTIGO COMPOSITO CONFORMADO POROSO EM MULTIPLAS CAMADAS

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 hydrop...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ROBERT S. MALLOUK, PHILLIP A. BRANCA, RANDAL L. PERRY, DANIEL E. HUBIS
Format: Patent
Sprache:por
Schlagworte:
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
APPARATUS THEREFOR
CHEMISTRY
COMPOSITIONS BASED THEREON
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
WORKING-UP
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Beschreibung
Zusammenfassung: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.