Dioxolanes and thio analogs, derivatives thereof and lubricants and fuels containing same
AssigneeThe Lubrizol Corporation
InventorReed H. Walsh
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Abstract
Dioxolanes, thio analogs thereof, and derivatives of these and methods of preparation are described. These materials are useful as additives in lubricants and fuels. Methods for reducing fuel consumption in internal combustion engines employing the lubricating compositions are described.
Claims5
A compound of the formula:
- ##STR22## wherein each X is independently oxygen or sulfur and at least one of the substituents R.sub.1 -R.sub.6 is a group of the formula:
- ##STR23## wherein R.sub.7 is hydrocarbyl and each R.sub.8 is independently hydrogen or hydrocarbyl, and the members of R.sub.1 -R.sub.6 that are not groups of formula (II) are each independently hydrogen or hydrocarbyl.
A method for preparing a compound of the formula:
- ##STR25## wherein each X is independently oxygen or sulfur and at least one of the substituents R.sub.1 -R.sub.6 is a group of the formula:
- ##STR26## wherein R.sub.7 is hydrocarbyl and each R.sub.8 is independently hydrogen or hydrocarbyl, and the members of R.sub.1 -R.sub.6 that are not groups of formula (II) are each independently hydrogen or hydrocarbyl, which method comprises reacting at least one isocyanate of the formula:
- R.sub.7 --N.dbd.C.dbd.O
- with a compound of the formula:
- ##STR27## wherein X is as defined hereinabove, wherein at least one member of R.sub.a -R.sub.f is a group of the formula:
- ##STR28## wherein each R.sub.8 is independently hydrogen or hydrocarbyl, and the remaining groups are hydrogen or hydrocarbyl.
A method for reducing fuel consumption in an internal combustion engine, which comprises lubricating said engine with a lubricating oil composition comprising a major amount of an oil of lubricating vicosity and a minor amount of an oil soluble or dispersible compound of the formula:
- ##STR29## wherein each X is independently oxygen of sulfur and the substituents R.sub.1 -R.sub.6 are each independently a member of the group consisting of ##STR30## wherein R.sub.7 is hydrocarbyl and each R.sub.8 is independently hydrogen or hydrocarbyl.
Dependencies are inferred from the claim text.