High stability lubricating oil base stocks and processes for preparing the same
AssigneeExxonMobil Chemical Patents Inc.
InventorKyle G. Lewis
Life of this patent
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Abstract
Compounds having the formula (F-I) below are provided herein: wherein: R1 is a C1-C5000 alkyl group; R2 is (i) a C4-C30 linear alkyl group or (ii) a C4-C5000 branched alkyl having the formula (F-II) below: wherein R5 and R6 at each occurrence are each independently a hydrogen or a C1-C30 linear alkyl group and n is a positive integer, provided however, among all of R5 and R6, at least one is a C1-C30 linear alkyl group; and R7 is a hydrogen or a C1-C30 linear alkyl group; R3 is hydrogen or a C1-C5000 alkyl group; and R4 is a C1-C50 alkyl group or an aromatic group. Processes for preparing compounds of formula (F-I) as well as base stock and lubricant compositions containing compounds of formula (F-I) are also provided.
Claims30
A lubricant base stock comprising a composition comprising at least 50 mol % of a compound having the formula (F-I) below:
- wherein:
- R1 is a C1-C500 alkyl group;
- R2 is (i) a C4-C30 linear alkyl group or (ii) a C4-C500 branched alkyl group having the formula (F-II) below:
- wherein:
- R5 and R6 at each occurrence are each independently a hydrogen or a C1-C30 linear alkyl group and n is a positive integer, provided however, among all of R5 and R6, at least one is a C1-C30 linear alkyl group;
- and R7 is a hydrogen or a C1-C30 linear alkyl group;
- R3 is hydrogen or a C1-C500 alkyl group;
- R4 is a C1-C50 alkyl group or an aromatic group;
- and
- wherein the lubricant base stock has a rotating pressure vessel oxidation test (RPVOT) break time of at least about 400 minutes,
- wherein the compound is produced by a process with a selectivity for producing compounds that correspond in structure to formula (F-I) of at least about 90 mol %;
- and the compound has a viscosity index of about 10 to about 140.
Dependencies are inferred from the claim text.