E.i. Dupont De Nemours and Company

Robert Joseph Kolouch

John Scott Newman

Clarence Garlan Law, Jr

Douglas John Eames

David L Reichert

Rudolph H Michel

James Arthur Trainham, Iii

Andrew Kelsey Birchenall

Robert Lloyd Freed

Fluoropolymer compositions containing melt-fabricable functionalized fluoropolymer and high temperature resistant thermoplastic form laminates to metal at low concentrations of high temperature resistant thermoplastic.

Fluoropolymer laminate

Fluoropolymer compositions containing melt-fabricable functionalized fluoropolymer and liquid crystal polymer have enhanced adhesion to metal even at low concentrations of liquid crystal polymer.

Fluoropolymer composition

Fluoropolymer compositions containing melt-fabricable functionalized fluoropolymer and high temperature resistant thermoplastic adhesion promoter have enhanced adhesion to metal at low concentrations of high temperature resistant thermoplastic.

The invention relates to an electrochemical cell which has an electrode, a membrane disposed in contact with one side of the electrode and a current bus disposed on the other side of the electrode. A current distributor which is disposed between the electrode and the current bus distributes current to the electrode by electronic conduction. The current distributor is made of a non-porous layer of a conductive polymer composite material. The current distributor thus provides a barrier between the current bus and the reactant and the product of the cell. This is especially important in aggressive environments, such as hydrogen chloride. Thus, the cell of the present invention is particularly useful in converting anhydrous hydrogen halide directly to essentially dry halogen gas, such as anhydrous hydrogen chloride to chlorine gas, or in converting aqueous hydrogen chloride to wet chlorine gas.

Electrochemical cell having a current distributor comprising a

Tetrafluoroethylene copolymer compositions containing conductive carbon black, graphite fiber or thermally conductive fillers have significantly increased conductivity when the tetrafluoroethylene copolymer has been treated with a fluorinating agent.

Conductive filled fluoropolymers

Electrically conductive tetrafluoroethylene copolymer compositions containing conductive carbon black have significant increased conductivity and lower effective melt viscosity when the tetrafluoroethylene copolymer has been treated with a fluorinating agent.

Conductive fluoropolymers

Poly(ethylene terephthalate) resin and blends of poly(ethylene terephthalate) resin with other polymers are extruded while being coupled with an organic diisocyanate under conditions where carbon dioxide gas is vented smoothly, as it is formed. The extruder has a number of zones designed to perform specific functions. The temperature in the kneading zone and in the venting zone must be maintained at about 280.degree.-320.degree. C. to bring about rapid reaction and to permit efficient gas evolution and removal without thermally degrading the polymeric material. The extruded article is free of trapped gas bubbles and other imperfections. This process is particularly suitable for making PET billets, which then are stretched to form strapping useful in packaging applications.

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Vienna, WV, United States of America

Robert Joseph Kolouch