Patent ID: 9243683
Filing Date: 2016-01-26
CPC Classification: C08J,C08K,C08L,F16G

Claim Text:
1. A toothed belt, comprising: a belt body formed of a rubber portion containing hydrogenated nitrile rubber and a polymer alloy formed by dispersing zinc methacrylate in the hydrogenated nitrile rubber, and in which a plurality of core wires are embedded; a tooth rubber portion more than one of which is juxtaposed on at least one surface of the belt body; and a tooth cloth portion formed by impregnating a cloth with a rubber composition containing hydrogenated nitrile rubber, and covering the tooth rubber portion, wherein the rubber portion contains dioctyl sebacate and trimellitic acid ester in a mass part ratio of 1:19 to 1:1, a mass percentage of the dioctyl sebacate to a whole quantity of the rubber portion is less than 4 mass %, and a mass percentage of a total quantity of the dioctyl sebacate and the trimellitic acid ester to the whole quantity of the rubber portion is in a range from 4 mass % to 8 mass %.