Dow Global Technolgoies LLC

Mark A Spalding

Bharat Indu Chaudhary

Steven Douglas Jons

David J Moll

Joseph Dooley

Karl M Seven

Qian Gou

Calvin Lee Pavlicek

Weijun Wang

Gregg L Poppe

Lower discharge temperatures and improved flow rates are obtained for the processing of meltable, solid crosslinkable compositions comprising a polymer, e.g., polyethylene, and a peroxide, in a single barrel extruder by equipping the extruder with an energy transfer (ET) screw that comprises: (1) an ET section with a distance averaged ET section depth of 8.0% to 10% of the extruder barrel internal diameter, and (2) a metering section with a metering section depth of 6.0% to 8% of the extruder barrel internal diameter.

Energy transfer screw and improved extrusion process

A method for assembling an electrodeionization device comprising providing in a sequential arrangement: an anode, membrane cell assembly, cathode; wherein the membrane cell assembly comprises at least one sequential arrangement of: a cation exchange membrane, concentrating chamber, anion exchange membrane, diluting chamber, cation exchange membrane, concentrating chamber and anion exchange membrane. The method includes locating an ion exchange spacer in at least one chamber of the membrane cell assembly wherein an ion exchange spacer comprises an ion exchange resin and a dissolvable binder.

Electrodeionization device including ion exchange spacer and method of assembly

Growing community of inventors

Midland, MI, United States of America

Mark A Spalding