Conductive vinylaromatic polymer filled with black carbon

Details Conductive vinylaromatic polymer filled with black carbon Conductive vinylaromatic polymer filled with black carbon

C - Chemistry, Metallurgy

08

K

C08K 3/04 (2006.01) C08L 23/08 (2006.01) C08L 25/06 (2006.01) C08L 53/02 (2006.01)

Patent

CA 2418076

The invention concerns a composition comprising: 35 to 65 wt. % of radical vinylaromatic polymer, 5 to 40 wt. % of ethylene and alkyl (meth)acrylate copolymer, 2 to 20 wt. % of copolymer with vinylaromaticdiene monomer blocks, a necessary and sufficient amount of conductive black carbon for providing the composition with resistivity ranging between 1.10<4> to 1.10<9> OMEGA .cm. The composition maintains good conductivity whatever the transformation mode used and has excellent impact resistance.

L'invention concerne une composition comprenant 35 à 65% en poids d'un polymère vinylaromatique radicalaire, 5 à 40% en poids de copolymère de l'éthylène et d'un (méth)acrylate d'alkyle, 2 à 20% en poids d'un copolymère à blocs comprenant au moins un bloc d'un polymère vinylaromatique et au moins un bloc de polybutadiène vinylaromatique, une quantité de noir de carbone conducteur pour que la composition ait une résistivité allant de 1.10 4 à 1.10 9 .OMEGA..cm. La composition conserve une bonne conductivité quelle que soit le mode de transformation utilisé et présente une excellente résistance aux chocs.

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