发明授权
US6162548A Cables with a halogen-free recyclable coating comprising polypropylene and an ethylene copolymer having high elastic recovery 失效
具有无卤可再循环涂层的电缆,包括聚丙烯和具有高弹性回复性的乙烯共聚物

Cables with a halogen-free recyclable coating comprising polypropylene
and an ethylene copolymer having high elastic recovery
摘要:
A cable, in particular for power transmission, for telecommunications or for data transmission, or also combined power/telecommunications cables, wherein at least one coating layer consists of a recyclable material which is halogen-free and has superior mechanical and electrical properties. This material consists of a polymer mixture comprising: (a) a crystalline propylene homopolymer or copolymer; and (b) an elastomeric copolymer of ethylene with at least one alpha-olefin having from 3 to 12 carbon atoms, and optionally with a diene; the said copolymer (b) being characterized by a 200% tension set value (measured at 20.degree. C. for 1 minute according to ASTM standard D 412) lower than 30%.
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