Trans isomer rubber is an isomer of cis 1.4-polyisoprene. It is well known that natural rubber is cis-isoprene rubber, and natural trans-isoprene rubber (also known as Gutapo or gutta percha) is derived from woody eucommia bark or herbaceous dandelion milk, which is obtained by refining. In addition, isoprene in the C5fraction obtained after petroleum cracking can also be polymerized under specific catalytic conditions to obtain a synthetic trans isoprene rubber, abbreviated as TPI (abbreviation of trans-polyi-soprene). The cultivation of natural trans-isoprene rubber requires a large amount of land, while the development of TPI does not have the same problem due to the abundant source of petroleum lysate C5. In addition to the traditional use of gutta percha, TPI can be successfully blended with natural, styrene-butadiene, cis-butyl and other general-purpose rubber, which is equivalent to opening up a new general-purpose rubber, and also opened up new applications for C5. field.