The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2001
Filed:
Mar. 03, 1999
Laila Rogestedt, {umlaut over (O)}dsmål, SE;
Hans-Bertil Martinsson, Varekil, SE;
Lars Thorn, Kung{umlaut over (a)}lv, SE;
Ruth Dammert, V{umlaut over (a)}stra Frölunda, SE;
Borealis Polymers Oy, Porvoo, FI;
Abstract
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,≧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.