| abstract |
The toothed belt of the present invention is a thermoplastic elastomer alloy in which all or part of the belt body contains a thermoplastic polyurethane (A) and a modified ethylene-propylene-diene copolymer rubber (B) by unsaturated carboxylic acid or a derivative thereof. It is characterized by the above-mentioned. The weight ratio [(B) / (A)] of the modified ethylene-propylene-diene copolymer rubber (B) and the thermoplastic polyurethane (A) by the above unsaturated carboxylic acid or derivatives thereof is preferably 0.1 / 99.9 to 30/70. Do. According to the toothed belt of the present invention, even when used for a long time under high load, wear, damage, cracks, fractures, etc. are unlikely to occur in the belt body, and the durability is extremely excellent. |