| abstract |
(57) [Summary] [Structure] The polyisoprene elastomer has an average molecular weight of 15,000 to 70,000, preferably 25.0. It has a polyisoprene content of 00 to 50,000. It is cross-linked with unsaturated aromatic compounds and cured with a sulfur or peroxide curing system. Elastomers have very low compression set (0 to 5 percent) and low hardness (Shore A, 0 to 2). 0). [Effect] This elastomer is lightweight and flexible, has flexibility and durability, and its characteristics make the characteristics of shock absorption and shock relaxation unmatched. Due to its nature, elastomers are ideal as components of insoles or midsoles for footwear. |