Importance

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Abstract

A cable comprising one or more electrical conductors or communications media, or a core of two or more electrical conductors or communications media, each electrical conductor, communications medium, or core being surrounded by a composition, which is essentially halogen free, comprising 100 parts by weight of a mixture of resins and 5 to 250 parts by weight of a flame retardant compound, which is either magnesium hydroxide, coated or uncoated, or aluminum trihydrate, wherein the resins in the mixture are as follows: (i) a polyethylene made using a metallocene single site catalyst system, said polyethylene having an Mw/Mn ratio of no greater than about 3; (ii) a polyethylene made using a transition metal catalyst system other than a metallocene single site catalyst system, said polyethylene having an Mw/Mn ratio greater than about 4; (iii) optionally, a copolymer of ethylene and an unsaturated ester or a very low density polyethylene having a density no greater than 0.915 gram per cubic centimeter, wherein resins (i) or (ii) are modified with an unsaturated aliphatic diacid anhydride through grafting or copolymerization.

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First Claim