Borealis Polymers Oy

Lars Thorn

Ruth Dammert

Hans-Bertil Martinsson

Laila Rogestedt

An insulating composition for communication cables (,) is disclosed as well as a telesingle wire (,) which comprises the insulating composition and a telecommunication cable (,) which comprises a plurality of telesingle wires (,) including the insulating composition. The insulating composition comprises a multimodal olefin polymer mixture, obtained by polymerization of at least one &agr;-olefin in more than one stage having a density of about 0.920-0.965 g/cm,, a melt flow rate (MFR,) of about 0.2-5 g/10 min, an FRR,&gE;60, and an environmental stress cracking resistance (ESCR) according to ASTM D 1693 A/10% Igepal, of at least 500 hrs, said olefin polymer mixture comprising at least a first and a second olefin polymer, of which the first is selected from (a) a low molecular weight (MW) olefin polymer with a density of about 0.925-0.975 g/cm,and a melt flow rate (MFR,) of about 300-20 000 g/10 min, and (b) a high molecular weight (MW) olefin polymer with a density of about 0.880-0.950 g/cm,and a melt flow rate (MFR,) of about 0.5-20 g/10 min.

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Kung{umlaut over (a)}lv, Sweden

Lars Thorn