Shell Oil Comapny

Tor Kit Goh

Mark Lawrence Brewer

Roger Francis Cracknell

Additive composition for use in a fuel or lubricant formulation, comprising an active substance in an inclusion complex with a modified cyclodextrin of formula (I): wherein n is an integer from 6 to 20, and R, Rand Rare each independently selected from hydrogen, optionally substituted alkyl, optionally substituted aryl and carbonyl, provided that R, Rand Rare not all hydrogen. Also provided is a fuel or lubricant formulation comprising the additive composition, a premix for use in preparing the additive composition, and the use of a modified cyclodextrin (I) as a vehicle for an active substance in an additive composition or in a fuel or lubricant formulation.

Compositions

An additive composition for use in a diesel fuel formulation, comprising a cetane improver in an inclusion complex with a modified cyclodextrin of formula (I): wherein n is an integer from 6 to 20, and R, Rand Rare each independently selected from hydrogen, optionally substituted alkyl, optionally substituted aryl and carbonyl, provided that R, Rand Rare not all hydrogen. Also provided is a diesel fuel formulation comprising the additive composition, and the use of a modified cyclodextrin (I) as a vehicle for a cetane improver in an additive composition or diesel fuel formulation.

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Damansara Heights, Malaysia

Tor Kit Goh