Microporous asbestos diaphragms/cathodes for electrolytic cells
AssigneeRhone-Poulenc Chimie
InventorsJean Bachot, Pascal Stutzmann, Jean-Maurice Perineau
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Abstract
Microporous diaphragms adapted for wet-consolidation with composite cathodes for use in electrolytic cells, e.g., chlorine/soda electrolysis cells, comprise a sintered, fluoropolymer microconsolidated asbestos-based microporous fibrous sheet material, such sheet material including from 3% to 35% by weight of fluoropolymer binder, from 1% to 50% by weight of a uniformly distributed gel of an oxohydroxide of at least one metal of Groups IVA, IVB, VB and VIB of the Periodic Table or of the lanthanide or actinide series thereof, and from 20% to 95% by weight of fibers, at least 1% by weight of such fibers being asbestos fibers.
Claims15
A microporous diaphragm which comprises a sintered, fluoropolymer microconsolidated asbestos-based microporous fibrous sheet material, said sheet material comprising from 3% to 35% by weight of fluoropolymer binder, from 1% to 50% by weight of a uniformly distributed gel of an oxohydroxide of at least one metal of Groups IVA, IVB, VB and VIB of the Periodic Table or of the lanthanide or actinide series thereof, and from 20% to 95% by weight of fibers, at least 1% by weight of said fibers being asbestos fibers.
Dependencies are inferred from the claim text.