Isoprene rubber 
 Isoprene〗 〖a rubber from isoprene, the closest natural rubber, and water resistance, electrical insulation, more than natural rubber. Full name of the cis 1,4 - polyisoprene rubber. High-cis-isoprene system (cis-1 ,4-content of 92% ~ 97%), synthetic rubber, because of their structure and properties of natural rubber approximate, it is also known as synthetic natural rubber. It is a good performance general-purpose synthetic rubber, mainly used in tire production, in addition to the aviation and heavy-duty tires can replace natural rubber. But the strength of its raw rubber adhesion, processing performance, as well as vulcanized rubber, anti-chemical formula 
 Tear strength, fatigue resistance, etc. is slightly lower than the natural rubber.