| 摘要 |
PURPOSE:To obtain a sulfur composition excellent in dispersibility, flow, antistatic property, storage stability, nondusting property, by mixing sulfur surface-treated with a process oil containing a rubber dissolved therein with at least one member selected from among ZnO, CaCO3, SiO2 and MgCO3 in a free crusher. CONSTITUTION:Surface-treated sulfur (A) obtained by mixing 100pts.wt. sulfur (a) with 1-20pts.wt. process oil (b) containing a rubber dissolved therein is mixed with 5-20pts.wt. at least one fine powder inorganic compound (B) selected from among ZnO, CaCO3, SiO2 and MgCO3. This mixture is mixed with a free crusher of a rotation speed of 3,000-5,000rpm to obtain a sulfur composition composed of component A surface-treated with component B and being useful as a vulcanizing agent for rubber.
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