| 摘要 |
The present invention is concerned with an optical cable with improved tracking resistance comprising at least one optical fibre and an outer sheath which comprises a polymeric material, characterized in that the polymeric material forms a matrix for the sheath and consists of a multimodal olefin polymer obtained by a coordination catalyzed polymerization, and in that the total composition of the sheath comprises 15-40 % by weight of a metal hydroxide, preferably magnesium hydroxide and/or aluminium hydroxide, and 0.01-0.9 % by weight of carbon black.
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