Fuel additive and fuel composition containing the same

C - Chemistry – Metallurgy – 10 – L

Patent

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Details

C10L 1/18 (2006.01) C10L 1/22 (2006.01) C10L 10/00 (2006.01) C10L 10/04 (2006.01)

Patent

CA 2353464

The invention provides the use of a poly(hydroxycarboxylic acid)amide or ester derivative of general formula (I) wherein R is the residue of an amine, an aminoalcohol or a polyol linked to the or each poly(hydroxycarboxylic acid) via an amide or ester linkage; R1 is hydrogen or optionally substituted hydrocarbyl group containing up to 50 carbon atoms; A is an optionally substituted hydrocarbyl group; n is from 1-100, preferably 1-10 and p is from 1-5, as a fuel additive acting as a detergent and as a lubricity additive in fuel compositions. Moreover, the invention provides a fuel oil composition comprising of a major amount of a fuel oil, and a minor amount of an additive as well as an additive concentration for use in a fuel oil composition.

La présente invention concerne l'utilisation d'un dérivé de poly(acide hydroxycarboxylique)amide ou de poly(acide hydroxycarboxylique)ester représenté par la formule (I) et servant d'additif pour carburant à action détergente ou d'additif lubrifiant pour compositions de carburants. Dans cette formule, R est un restant d'un amine, d'un aminoalcool ou d'un polyol lié au poly(acide hydroxycarboxylique) ou à chacun des poly(acides hydroxycarboxyliques) via un amide ou une liaison ester. R?1¿ est hydrogène ou groupe hydrocarbyle éventuellement substitué contenant jusqu'à 50 atomes de carbone. A est groupe hydrocarbyle éventuellement substitué. n vaut de 1 à 100, de préférence de 1 à 10 et p vaut de 1 à 5. L'invention concerne également, d'une part une composition de carburant diesel comprenant une majeure partie de carburant diesel et une moindre part d'un additif, et d'autre part un additif concentré destiné à une composition de carburant diesel.

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