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US 2020/0071508 A1Published application
Cable jacket composition
AssigneeBorealis AG
InventorsAnna Hjärtfors, Yi Liu, Victor Sumerin, Joseph Thorman
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AssigneeBorealis AG
InventorsAnna Hjärtfors, Yi Liu, Victor Sumerin, Joseph Thorman
Estimating the term…
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<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.
A cable jacket composition comprising a multimodal olefin copolymer, wherein said multimodal olefin copolymer has a density of 0.935-0.960 g/cm3 measured according to ISO 1183-1:2004 Method A on compression moulded specimen prepared according to EN ISO 1872-2 (February 2007) and MFR2 of 1.5-10.0 g/10 min measured in accordance with ISO 1133-1 at 190° C. 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 measured in accordance with IEC 60811-406, method B and wherein the numerical values of cable wear index measured according to ASTM D 4060 and composition MFR2 (g/10 min) follow the correlation:
Dependencies are inferred from the claim text.