Elastomers

Poly-Butadiene Rubber (PBR)

Polybutadiene rubber (BR) is, as a homopolymer produced by the polymerization of 1,3-butadiene, has three different bonding structures in the microstructure, i.e., 1,4-cis, 1,4-trans and 1,2-vinyl. The types of polybutadiene rubber can be divided into high cis BR (HBR) and Low cis BR (LBR), depending on its 1,4-cis content. High cis BR (HBR) refers to products with their 1,4-cis content of more than 94%, possessing excellent abrasion resistence, repulsive elasticity, aging resistence and water resistence. In addition, as the product has secondary transition temperature as low as -100℃, it is the most widely used synthetic rubber together with SBR. We mainly produce KUMHO KBR 01, 01L and 31. KBR 01 and 01L are used for tires, footwear, belts, rubber hoses and other mechanical rubber products, whereas KBR 31, containing aromatic oil, is mainly used in conveyer belts and tires due to its excellent performance in the treads of snow tires.


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