Flame-retardant electrical cable

摘要

A flame-retardant cable includes at least one conductor and at least one coating made from a flame-retardant composition. The flame-retardant composition includes: (a) at least one crystalline propylene homopolymer or copolymer; (b) at least one copolymer of ethylene with at least one C3-C12 alpha-olefin, having a density of from 0.860 to 0.904 g/cm3 and a Molecular Weight Distribution Index not higher than 5; (c) at least one ethylene homopolymer or copolymer of ethylene with at least one C3-C12 alpha-olefin having a density of from 0.905 to 0.970 g/cm3; and (d) at least one flame-retardant filler.

主权项

1. A flame-retardant cable comprising at least one conductor and at least one conductor and at least one coating made from a flame-retardant composition, said composition being a mixture of at least the following components:
(a) from 5 to 25% by weight of at least one crystalline propylene homopolymer or copolymer; (b) from 50 to 90% by weight of at least one copolymer of ethylene with at least one C3-C12 alpha-olefin, having a density of from 0.860 to 0.904 g/cm3 and a Molecular Weight Distribution Index not higher than 5; (c) from 5 to 30% by weight of at least one ethylene homopolymer or copolymer of ethylene with at least one C3-C12 alpha-olefin having a density of from 0.905 to 0.970 g/cm3; and (d) from 80 to 300% by weight at least one halogen-free flame-retardant filler selected from hydroxides, hydrated oxides, and hydrated salts of metals, the percentage being based on the total on the weight of the polymeric components (a), (b) and (c).