Shell Oil Comapny

Michael John Grundy

Thomas W Naisby

David Roy Kendall

Michael Pearson

Andrea Redford

Andrew Czeslaw Sutkowski

Fuel oil composition

The invention discloses a fuel oil composition comprising a major proportion of a liquid hydrocarbon middle distillate fuel oil, from 1 to 100 ppmw based on the composition of a polyoxyalkylene glycol dehazer and from 1 to 100 ppmw based on the composition of an organosilicone antifoam additive, wherein before mixing of the organosilicone antifoam with any other component of the fuel oil composition, the organosilicone antifoam additive is heated at a temperature of at least 40&deg; C. for a sufficient period of time to achieve improved antifoam properties of the fuel oil composition; a process for the preparation of such a fuel oil composition; and a method of fuelling a road vehicle with such a composition.

This invention provides alkoxy acetic acid derivatives of general formula I: ##STR1## wherein R is the residue of an amine, an aminoalcohol or a polyol linked to the or each --CHR'--CO-- moiety via an amide or ester linkage;

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Chester, United Kingdom

Michael John Grundy