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A method for the production of lubricating oils with improved viskositaetsindex
A method for the production of lubricating oils with improved viskositaetsindex
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机译:具有改进的粘度指数的润滑油的生产方法
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摘要
Lube oils of improved viscosity index are produced by subjecting a crude lubricating oil to hydrocracking, selectively fractionating the hydrocracked product to yield a product having the desired flash point and viscosity and recycling the fractionator bottoms to the hydrocracking zone.
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