Class Codes & Rates:

Code 4751 is applied to insureds engaged in the manufacture of synthetic rubber such as Buna-S, styrene-butadiene rubber, acrylonitrile rubber, butyl rubber, cold rubber, neoprene, polysulfide rubbers and polyurethane foams and rubber. Styrene, butadiene, acrylonitrile, isobutene isoprene, chloroprene, soap, ferrous sulfate, liquid hydrocarbon, dodecyl mercaptan, liquid toluene-diisocyanate, polyoxy-propylene glycol and catalysts such as peroxide and aluminum chloride are received from others in drums, via tank cars, or the chemicals may be piped in from tank farms. The raw materials vary depending upon the synthetic rubber being produced. The processing of the most common type of synthetic rubber involves co-polymerization of butadiene with styrene.