Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Reexamination Certificate
2005-12-13
2005-12-13
Griffin, Walter D. (Department: 1764)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
C208S028000, C208S057000, C208S058000, C208S059000, C208S060000, C208S062000, C208S087000, C208S096000, C208S134000
Reexamination Certificate
active
06974535
ABSTRACT:
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 lubricating oil basestock produced by said process.
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Boyle Joseph P.
Cody Ian A.
Gallagher John E.
Groestch John A.
Hantzer Sylvain S.
ExxonMobil Research and Engineering Company
Griffin Walter D.
Nguyen Tam M.
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