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Use of unsaturated olefin polymers to improve the compatibility between nitrile rubber seals and lubricating oil compositions
Use of unsaturated olefin polymers to improve the compatibility between nitrile rubber seals and lubricating oil compositions
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机译:使用不饱和烯烃聚合物改善丁腈橡胶密封件与润滑油组合物之间的相容性
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摘要
A method of improving the seal compatibility and/or copper corrosion performance of lubricating oil compositions for the lubrication of the crankcases of an internal combustion engine, which method includes the step of adding to the lubricating oil compositions a minor amount of a non-hydrogenated (unsaturated) olefin polymer. Also described are lubricating oil compositions for engines and transmissions, which compositions contain sulphur and/or a salicylate soap and a minor amount of a non-hydrogenated (unsaturated) polymer, which compositions are compatible with nitrile rubber engine and transmission seals and copper-containing engine and transmission components.
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