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US 5,509,943 AGranted
Motor fuel detergent additives-hydrocarbyloxypolyether allophonate esters of 2-hydroxy ethane
AssigneeTexaco Inc.
InventorsSheldon Herbstman, Constance A. Cadorette
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Abstract
The present invention provides a novel class of compounds, useful as gasoline detergent additives, comprising hydrocarbyloxypolyether allophonate esters of 2-hydroxy ethane. The present invention also provides a motor fuel composition containing the novel allophonate esters and further provides a method of synthesizing the allophonate esters of the present invention.
Claims8
A motor fuel composition comprising:
- (a) a major portion of a hydrocarbon fuel boiling in the range between 90.degree. F. and 370.degree. F.;
- and
- (b) a minor amount, sufficient to reduce the formation of deposits on intake valves, of an allophonate ester comprising a compound of formula ##STR7## where R is a C.sub.9 -C.sub.25 alkyl group, R.sup.2 is a C.sub.2 to C.sub.4 oxyalkylene group, m is 0 or 1, and n is a number between about 5 and about 30.
Dependencies are inferred from the claim text.