发明名称 |
ISOLIERUNGSZUSAMMENSETZUNG FÜR FERNMELDEKABEL |
摘要 |
An insulating composition for communication cables (2) is disclosed as well as a telesingle wire (2) which comprises the insulating composition and a telecommunication cable (1) which comprises a plurality of telesingle wires (2) including the insulating composition. The insulating composition comprises a multimodal olefin polymer mixture, obtained by polymerization of at least one alpha-olefin in more than one stage having a density of about 0.920-0.965 g/cm3, a melt flow rate (MFR2) of about 0.2-5 g/10 min, an FRR21/2>=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/cm3 and a melt flow rate (MFR2) 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/cm3 and a melt flow rate (MFR21) of about 0.5-20 g/10 min. |
申请公布号 |
DE69921656(D1) |
申请公布日期 |
2004.12.09 |
申请号 |
DE1999621656 |
申请日期 |
1999.06.08 |
申请人 |
BOREALIS TECHNOLOGY OY, PORVOO |
发明人 |
ROGESTEDT, LAILA;MARTINSSON, HANS-BERTIL;THORN, LARS;DAMMERT, RUTH |
分类号 |
H01B3/44;H01B11/18;(IPC1-7):H01B3/44 |
主分类号 |
H01B3/44 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|