Borealis Ag

Stanislaw Gubanski

Villgot Englund

Christian Müller

Richard Olsson

Anette Johansson

Mats Andersson

Ulf Gedde

Dongming Liu

Markus Jarvid

Love Pallon

Christian Muller

Mikael Hedenqvist

Jonas Mattiasson Bjuggren

Amir Masoud Pourrahimi

Renee Kroon

Harald Wutzel

The invention relates to a polymer composition comprising a polymer (a) and a nanoparticle filler (b), wherein the polymer composition comprises a volume percentage (vol. %) of the nanoparticle filler (b), which is Dvol vol. %, and has a center-to-center average distance, in nanometer (nm), in two dimensions (2D) and with a free radius, from one nanoparticle to its nearest nanoparticle neighbour, which is R1st nm, and wherein the polymer composition shows a dependency between said center-to-center average distance to nearest neighbour, R1st, and said volume percentage, Dvol vol. %, which is R1st=E/(Dvol+0.3)+F, wherein Dvol&#x2264;Dvol&#x2264;Dvol, E&#x2264;E&#x2264;E, F&#x2264;F&#x2264;F, and Dvolis 0.010 and Dvolis 4.4, Eis 100 and Eis 280, and Fis 50 and Fis 140; an electrical device, e.g. a power cable; and a process for producing an electrical device.

Polymer composition and electrical devices

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

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Gothenburg, Sweden

Stanislaw Gubanski