Borealis Ag

Mats Andersson

Villgot Englund

Thomas Hjertberg

Christian Müller

Anette Johansson

Stanislaw Gubanski

Markus Jarvid

Christian Muller

Jonas Mattiasson Bjuggren

Renee Kroon

Harald Wutzel

The present invention relates to a polyolefin composition comprising (A) a polyolefin, (B) a benzil derivative comprising, preferably consisting of, the structural unit according to the following formula (I) wherein R, R, R, R, R, R, R, R, Rand Rindependently from each other are hydrogen, or a hydrocarbyl group which may contain heteroatoms or at least two of said R, R, R, R, R, R, R, R, Rand Rtogether with the ring atoms of the ring system of formula (I) they are attached to, form a further aromatic or non-aromatic ring fused to the ring system of formula (I) and at least Ror Ris an ester group. The invention also relates to a wire or cable, in particular a medium, high or extra high voltage cable, comprising such a composition, and to the use of such a composition for the production of a wire or cable, in particular a medium, high or extra high voltage cable.

Polyolefin composition for medium/high/extra high voltage cables comprising benzil-type voltage stabiliser

Disclosed is a polyolefin composition comprising (i) a polyolefin (A), (ii) a benzil derivative (B) comprising the structural unit according to the following formula (I), wherein one or more of the carbon atoms in the phenyl rings to which residue R1, R2, R3, R4, R5, R6, R7, R8, R9 or R10 is attached may also be a heteroatom; R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 independently are hydrogen, or a hydrocarbyl group which may contain heteroatoms; or at least two of said R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 form a further aromatic or non-aromatic ring and such system has one to eight substituents, R1' to R8&#x2032;, and n=2 to 9; with the proviso that at least one hydrocarbyl group is present. 

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Alafors, Sweden

Mats Andersson