High viscosity index lubricants
作者： William E. Garwood , Stephen S. Wong , Quang N. Le
DOI:
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摘要: Lubricant basestocks of high viscosity index, typically with V.I. at least 130 or higher, and low pour point, below 5° F., are produced by hydroisomerizing petroleum waxes such as slack wax de-oiled wax, over zeolite beta then dewaxing to target point. A preferred process employs a solvent after the hydroisomerization step effect partial separated being recycled step; is completed catalytically, ZSM-5 ZSM-23.
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