초록 ▼

The present invention relates to improved polymeric compositions based on ethylene-vinyl ester and ethylene-alkyl acrylate copolymers which can be crosslinked to provide insulation coatings for wire and cable products. The copolymer compositions contain a hydrated inorganic filler, an alkoxysilane,

The present invention relates to improved polymeric compositions based on ethylene-vinyl ester and ethylene-alkyl acrylate copolymers which can be crosslinked to provide insulation coatings for wire and cable products. The copolymer compositions contain a hydrated inorganic filler, an alkoxysilane, an antioxidant and a polymeric processing additive. Organic peroxides are preferably employed to facilitate crosslinking. An improved method for providing the improved compositions and electrical conductors coated with the crosslinkable polymeric compositions are also provided by the invention.

대표청구항 ▼

A electrical conductor coated with an insulating layer of a crosslinkable polymer composition comprising (a) a polymer selected from the group consisting of copolymers of ethylene and vinyl esters of C2-6 aliphatic carboxylic acids, copolymers of ethylene and C1-6 alkyl acrylates, copolymers of ethy

A electrical conductor coated with an insulating layer of a crosslinkable polymer composition comprising (a) a polymer selected from the group consisting of copolymers of ethylene and vinyl esters of C2-6 aliphatic carboxylic acids, copolymers of ethylene and C1-6 alkyl acrylates, copolymers of ethylene and C1-6 alkyl methacrylates, or mixtures thereof; (b) 80 to 400 phr inorganic filler selected from the group consisting of hydrated aluminum oxide, hydrated magnesia, hydrated calcium silicate, and hydrated magnesium carbonate; (c) 0.5 to 5 phr of a lower alkyl-, alkenyl-, alkynyl- or aryl-alkoxysilane having from 1 to 3 C1-6 alkoxy substituents; (d) 0.5 to 8 phr antioxidant; and (e) 0.25 to 8 phr low molecular weight polymeric processing additive comprised of aliphatic resins having an average molecular weight less than 2000 and containing ester functional groups.