Blendinging the paraffin wax constituent and this, becomes the rubber constituent

摘要

PURPOSE:To prevent the title compsn. from static ozone deterioration over a wide temp. range when a linear satd. hydrocarbon of a specified carbon number is compounded in a rubber product and to improve the appearance of the product by setting the proportion of the linear satd. hydrocarbon in a specified range. CONSTITUTION:A distillate is obtd. by the distillation of a crude oil under normal pressure followed by the vacuum distillation of the bottom oil. Then, arom. ingredients are removed from this distillate by solvent extraction and, if necessary, after purification with a hydroxide, solvent is dewaxed to obtain a crude wax as a by-product in the dewaxing process when a dewaxed oil is obtd. as a base oil for a lubricating oil. Then, this crude oil is furthermore deoiled with a solvent to remove a low b.p. wax to obtain a deoiled wax. The obtd. deoiled wax is distilled to obtain the title compsn. wherein the compositional ratio of each of 22-44C linear satd. hydrocarbons to the whole linear satd. hydrocarbon ingredients is 2wt.% or larger.