Borealis Ag

Borealis Gmbh

Anna Hjärtfors

Pauli Leskinen

Per-Ola Hagstrand

Villgot Englund

Martin Anker

Thomas Hjertberg

Yi Liu

Victor Sumerin

Joseph Thorman

Ravindra Tupe

John Jamieson

Jani Aho

Jarmo Kela

Denis Yalalov

Ann Watson

Åsa Wannerskog

Anette Nilsson

Lars Efraimsson

Gizheng Dou

ÅSa Wannerskog

The present invention relates to a cable jacket composition comprising a multimodal olefin copolymer, said copolymer having density of 0.935-0.960 g/cmand MFRof 2.2-10.0 g/10 min and said composition having ESCR of at least 2000 hours and a cable shrinkage of 0.70% or lower. The invention further relates to the process for preparing said composition and its use as outer jacket layer for a cable, preferably a communication cable, most preferably a fiber optic cable.

Cable jacket composition

The present invention relates to a multimodal ethylene copolymer composition having a density of 920 to 949 kg/mand a flexural modulus, wherein said flexural modulus is following the equation: Flexural modulus [MPa]&#x3c;21.35&#xb7;density [kg/m3]&#x2212;19585 [1]. The multimodal ethylene copolymer composition according to the invention can be used in a highly flexible cable jacket, preferably a power cable jacket.

Jacket with improved properties

The present invention relates to a cable jacket composition comprising a multimodal olefin copolymer, wherein said olefin copolymer has a density of 0.935-0.960 g/cm3 and MFR2 of 1.5-10.0 g/10 min and comprises a bimodal polymer mixture of a low molecular weight homo- or copolymer and a high molecular weight copolymer wherein the composition has ESCR of at least 2000 hours and wherein the numerical values of cable wear index and composition MFR2 (g/10 min) follow the correlation: Wear index&#x3c;15.500+0.900*composition MFR2. The invention further relates to the process for preparing said composition and its use as outer jacket layer for a cable, preferably a communication cable, most preferably a fiber optic cable.

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Kungälv, Sweden

Anna Hjärtfors