| 摘要 |
PURPOSE:The titled rubber, obtained by incorporating an oil-resistant unsaturated rubber with polyvinyl chloride (PVC), having improved sour resistance, and suitable to raw materials for rubbers in fuel supply systems always in contact with sour gasoline. CONSTITUTION:A sour-resisting rubber obtained by incorporating preferably 60-90pts.wt. oil-resistant unsaturated rubber, preferably acrylonitrile-butadiene copolymeric rubber with 30-40wt% acrylonitrile content with preferably 40- 10pts.wt. polyvinyl chloride (PVC), preferably having >=1,400 average polymerization degree.
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