Therban® 4309 (55,Bale)

A fully hydrogenated butadiene acrylonitrile copolymer (less than 1% residual doublebonds), which provides vulcanizates with superior resistance to heat, ozone and excellent resistance to non-polar hydrocarbon fluids including those containing aggressive additives. With this level of unsaturation, Therban 4309-based compounds can only be vulcanized with peroxides or high-energy radiation. The incorporation of a crosslinking co-agent is recommended for optimized physical properties of both unaged and aged vulcanizates. High molecular weight provides for capacity of high plasticizer and filler loads.