Arkema France

Nexans

Laurent Keromnes

Catherine Corfias-Zuccalli

Samuel Devisme

Anthony Combessis

Françoise Fenouillot-Rimlinger

Mikael Abeguile

Anne-Yvonne Laignel

Melek Maugin

Jean-Michel Marty

Maud Thivillon

Lucile Carteron

Ruben Briceno Garcia

Jean-François Larche

Walid Bahloul

Yannick Goutille

Birane Toure

Philippe Chaumont

Laurent Petitet

Philippe Cassagnau

Provided is a transparent thermoplastic composition including 70 to 95% by weight of a copolymer of ethylene and of an ethylenic monomer carrying a polar functional group and 5 to 30% by weight of a peroxide, where the copolymer includes from 20 to 45% by weight of the ethylenic monomer carrying a polar functional group. The composition may be used for crosslinking polymers.

Master mixture composition including a peroxide

A semi-conductive crosslinked layer produced from a polymer composition includes at least one polymer A having at least one epoxy function. A cross-linking agent B includes at least one reactive function that can react with the epoxy function of said polymer A in order to allow the cross-linking of said polymer A. The polymer composition also has an electrically conductive filler having a specific surface area BET of at least 100 m2/g according to the ASTM standard D 6556.

Medium-voltage or high-voltage electrical device

An electric device has a cross-linked layer obtained from a polymer composition that includes at least one polymer having at least one epoxy function. The polymer composition also has a non-polymer compound as a cross-linking agent including at least one reactive function that can react with the epoxy function of the polymer in order to allow the polymer to be cross-linked.

Medium- or high-voltage electric device

The invention relates to a transparent master mixture that includes an ethylene copolymer and an ethylene monomer having a polar function (a) and a peroxide (b), characterized in that said composition includes, by weight, from 5 to 30% of (b); from 70 to 95% of (a); and in that the copolymer (a) includes from 20 to 45 wt % of ethylene monomer having a polar function. The invention also relates to a method for producing a master mixture composition including an organic peroxide. The method makes it possible to produce a composition useful for cross-linking of polymers.

The present invention relates to a mixture including at least O,O-tert-butyl-O-(2-ethylhexyl) monoperoxycarbonate and at least O,O-tert-amyl-O-2-ethylhexyl monoperoxycarbonate, where the O,O-tert-amyl-O-2-ethylhexyl monoperoxycarbonate is present in the mixture in an amount of from 0.001% to 45% by weight relative to the total weight of the mixture. The invention also relates to a crosslinkable composition that includes such a peroxide mixture and an elastomer; and to uses of the crosslinkable composition and mixture.

Mixture of peroxides for crosslinking elastomers

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Chaponost, France

Laurent Keromnes