2.1.1. Rubber and Other Ingredients

The continuous phase was Styrene–Butadiene Rubber (SBR), KER 1500, from Bayer AG Company, Leverkusen, Germany. The other components were zinc oxide pure (ZnO) from LANXESS Deutschland GmbH, Augsburg, Germany; sulfur pure (S8) (density 2.07 g/cm3) from Siarkopol Tarnobrzeg Sp. z o.o., Tarnobrzeg, Poland; technical stearin, from Torimex Chemicals Ltd. Sp. z o.o., Konstantynów Łódzki, Poland; MBTS pure from Accelerator Bayer AG Company, Leverkusen, Germany; and toluene from Chempur Company, Piekary §láskie, Poland.
