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Definition: In the petrochemical industry “C4” refers to the branch of Olefins which begins with C4…. in their chemical formulas. C4 is used to nominated the Butadiene and all its derivatives

Comments:  Among the C4 family, the mostly used products are the Butylene isomers such as, Isoprene, Butyl Rubber (BTR), Styrene, Styrene Butadiene Rubber (SBR) and Acrylonitrile Butadiene Styrene (ABS).The Butyl Rubber (BTR) is mostly used for the tire and rubber industry. The big advantage: high impermeability to gases and liquids. This property is particularly useful for tire inner liners and inner tubes and other applications in pharmaceutical closures and protective clothing.

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