The Dow Chemical Company

Paul A Damrow

Floris Y Tsang

Daniel O Clark

Mark F Sonnenschein

Robert D Mahoney

H Nelson Beck

The invention relates to a process for preparing a microporous membrane from an unsulfonated poly(etheretherketone)-type polymer by forming a mixture of an unsulfonated poly(etheretherketone)-type polymer, an amorphous polymer, and a plasticizer, heating the resulting mixture, extruding or casting the mixture into a membrane, quenching or coagulating the membrane, and leaching the membrane, while optionally drawing the membrane before, during, and/or after leaching.

Process for making a microporous membrane from a blend containing a

Several advantages as to ease of cell fabrication, maximum cell size, fiber breakage, tubesheet tightness, resistance to tubesheet deformation in prolonged service, safety, etc., can be realized by using as the tubesheet in a hollow fiber type battery cell one which is elongated in shape, has a substantially smaller diameter than the fiber 'bundle' depending from it and in which the fiber ends passing through it are closely packed.

Elongated tubesheets for hollow fiber type battery cells

Elongated tubesheets for hollow fiber type battery cells and method of

Alkali metal/sulfur battery cells, in which the cathodic current collector is a shaped article comprising an aluminum substrate coated with molybdenum, have longer service lives if the molybdenum is overcoated with a layer of molybdenum oxides comprising an outer portion consisting of MoO.sub.3.

Method for molybdenum-coated aluminum current collector for alkali

Molybdenum-coated aluminum cathodes for alkali metal/sulfur battery cells

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Concord, CA, United States of America

Paul A Damrow