Borealis Ag

Boreaus Ag

Albrecht Dix

Markus Gahleitner

Katja Ellen Klimke

Magnus Palmlöf

Markku Vahteri

Marja Mustonen

Andrey Buryak

Anneli Pakkanen

Davide Tranchida

Petri Rekonen

Esa Kokko

Thomas Steffl

Tore Dreng

Janne Maaranen

Ann Watson

Susana Filipe

James Elliott Robinson

Christian Piel

Balakantha Rao Kona

Alexander Krajete

Carl-Gustav Ek

Ayodele Olutayo Fiola

Audrey Frenot Johansson

John Severn

Jeanette Aumo

Audrey Buryak

The present invention is directed to a new cable having at least one insulation layer, to a process for producing such cable as well as to the use of a polymeric-nucleating agent for increasing the crystallization temperature of a polymer composition being part of an insulation layer of such a cable and the use of such a cable as communication cable and/or electrical cable.

Insulation layer for cables

The present invention relates to a cable comprising a conductor surrounded by one or more layers, wherein at least one layer comprises a polymer composition comprising a copolymer of ethylene with one or more comonomers, to a process for producing the cable and to a polymer composition suitable as a cable layer material.

Method of producing a cable comprising a multimodal ethylene copolymer

A high density polyethylene moulding composition having a multimodal molecular weight distribution, having a density according to ISO 1183 at 23&#xb0; C. in the range of 945 to 965 kg/mand an MFRaccording to ISO 1133 in the range of 0.05 to 25 g/10 min, said polyethylene moulding composition comprising at least three ethylene polymer fractions having distinct molecular weights: A) 15 to 50 wt % of a low molecular weight ethylene homopolymer fraction with a weight average molecular weight Mw in the range of 15 to 40 kg/mol; B) 15 to 50 wt % of a medium molecular weight ethylene homopolymer fraction with a weight average molecular weight Mw in the range of 70 to 180 kg/mol; and C) 15 to 50 wt % of a high molecular weight ethyleve copolymer fraction with a weight average molecular weight Mw in the range of 200 to 400 kg/mol; and wherein the composition has: a tensile modulus according to ISO 527-2: 1993 measured on compression moulded samples of at least 800 MPa; a Charpy impact strength CIS (23&#xb0; C.) according to ISO 179:2000 measured on V- notched samples produced by compression moulding of at least 30 kJ/m; and an environmental stress crack resistance ESCR measured as FNCT full notch creep test according to ISO/DIS 16770.3 at 50&#xb0; C. and 6 MPa of at least 20 h.

Polyethylene moulding composition with improved stress crack/stiffness relationship and impact resistance

A polyethylene moulding composition having a multimodal molecular weight distribution, having a density according to ISO 1183 at 23&#xb0; C. in the range of 920 to 960 kg/mand an MFR190/2 according to ISO 1133 in the range of 0.05 to 10 g/10 min, said polyethylene moulding composition comprising at least three ethylene polymer fractions having distinct molecular weights: A) 15 to 50 wt % of a low molecular weight ethylene homopolymer or copolymer fraction with a weight average molecular weight Mw in the range of 15 to 40 kg/mol; B) 15 to 50 wt % of a medium molecular weight ethylene homopolymer or copolymer fraction with a weight average molecular weight Mw in the range of 70 to 200 kg/mol; and C) 15 to 50 wt % of a high molecular weight ethylene homopolymer or copolymer fraction with a weight average molecular weight Mw in the range of 220 to 400 kg/mol, provided that one of A, B and C is an ethylene homopolymer and at least one other component is an ethylene copolymer with at least one C-Ccomonomer; and wherein the composition has&#x2014;a Shore D hardness measured according to ASTM D2240-05 (15 sec) of at least 56.0.

Moulding composition

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Linz, Austria

Albrecht Dix