| Abstract: | Conventional and starch xanthide (SX) reinforced styrene-butadiene (SBR) rubbers from several molding compounds and a tire tread compound were compared during 90 days' storage at various controlled humidities and during 1 year's outdoor weathering. For practical compounds, where SX served as a replacement for silica or as a partial replacement for carbon black, there was little difference between conventional and corresponding SX reinforced SBR rubbers. Properly formulated SX reinforced rubbers would prove satisfactory even in demanding applications. |
