Societe Nationale Elf Aquitaine

Elf Atochem North America, Inc.

Hydro-Quebec

Elf Atochem S.a.

Jean M Chabagno

Daniel Muller

Ryan R Dirkx

Maurice Bourrel

Guy Campet

Claude Delmas

Didier Ferry

Regine Garie

Michel Bernard Armand

Michel Duval

Jean Salardenne

Josik Portier

Jean Paul Couput

Philippe Montagne

Gerard Junca

Bertrand Morel

Paul E Harvey

Catherine Geoffroy

Jean-Paul Couput

Jean Pourtau

The present invention relates to an insulating composition for electrical cable comprising a mixture of an ethylene-alkyl acrylate or ethylene-vinyl acetate copolymer and of a polymeric compound, said polymeric compound being an ethylene-alkyl acrylate-maleic anhydride terpolymer or an ethylene-vinyl acetate-maleic anhydride terpolymer, and usual additives such as, for example, a crosslinking agent, its use for the preparation of an insulation sheath of electrical cables and the insulation sheath obtained.

Water free reducing insulation for electrical cable

An electrochromic element useful in an electrochromic glass or mirror device and a process for making such element. The element is a five-layered structure including an electrolyte ion conducting layer interposed between first and second inorganic electrochromic layers which are interposed between a pair of conductive electrodes. The first and second inorganic electrochromic layers are different and are capable of exhibiting color-forming properties complementary to one another upon the incorporation of an alkali metal or Ag ion, a mixture of alkali metal or Ag ions or a mixture of alkali metal or Ag and hydrogen ions. The electrolyte ion conducting layer may be a copolymer of ethylene oxide, butylene oxide or methyl glycidyl ether, and optionally a small amount of allyl glycidyl ether, along with an ionizable salt, or may be a polyurethane gel formed by reacting the copolymer with triisocyanate, along with an ionizable salt. The second inorganic electrochromic layer comprises a transition metal oxide which exhibits a color change when shifting between the +2 and +3 valence states. The second inorganic electrochromic layer may be produced by an electrochemical process, a chemical process, or by a physical process. The electrochromic element may also comprise a plurality of five-layer structures in tandem, each pair separated by a substrate.

Electrochromic element, materials for use in such element, processes for

A solid polymeric electrolyte comprises a macromolecular material in which there is dissolved an ionic compound, particularly an ionic compound in solution in a copolymer of ethylene oxide and a second unit selected so that the copolymer chain maintains a polyether characteristic. Also a high performance composite electrode embodying this electrolyte, and a process for obtaining this electrolyte.

Novel macromolecular material for use in realizing electrolytes and/or

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Pau, France

Jean M Chabagno