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US5935417A Hydroconversion process for making lubricating oil basestocks 失效
润滑油基础油的加氢转化工艺

Hydroconversion process for making lubricating oil basestocks
摘要:
A process for producing a lubricating oil basestock having at least 90 wt. % saturates and a VI of at least 105 by selectively hydroconverting a raffinate from a solvent extraction zone in a two step hydroconversion zone followed by a hydrofinishing zone and a dewaxing zone.
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