Rubber composition, electric wire coating material, and electric wire
AssigneeNippon Zeon Co., Ltd.
InventorsYoshiaki Aimura, Manabu Asai
Life of this patent
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Abstract
A rubber composition comprising (A) a rubber ingredient comprised of (a) a nitrile group-containing highly saturated copolymer rubber having an iodine value of not larger than 120, preferably a hydrogenated product of an unsaturated nitrile-conjugated diene copolymer rubber, and (b) an acrylic ester polymer rubber, preferably a copolymer rubber comprising at least 80 mol % of alkyl acrylate or alkoxyalkyl acrylate units, at an (a)/(b) ratio of 40/60 to 90/10 by weight, and (B) an ethylene-α-olefin copolymer, the (A)/(B) ratio being in the range of 30/70 to 70/30 by weight. This rubber composition is useful as a covering material for forming a protective covering layer on electric wires.
Claims20
A rubber composition comprising (A) a rubber ingredient comprised of (a) a nitrile group-containing highly saturated copolymer rubber having an iodine value of not larger than 120 and (b) an acrylic ester polymer rubber containing at least 80% by mole of at least one kind of monomer units selected from alkyl acrylates and alkoxyalkyl acrylate, and which is free from a carbon-carbon unsaturated bond except for the carbon-carbon double bonds of a benzene ring, at an (a)/(b) ratio of 40/60 to 90/10 by weight, and (B) an ethylene-1-octene copolymer, the (A)/(B) ratio being in the range of 30/70 to 70/30 by weight;
- said rubber composition further comprising an organic peroxide and being free from an auxiliary capable of covulcanizing the rubber ingredient (a) and the rubber ingredient (b) with the organic peroxide.
Dependencies are inferred from the claim text.