Fuel compositions containing propoxilate

Details Fuel compositions containing propoxilate Fuel compositions containing propoxilate

C - Chemistry, Metallurgy

10

L

C10L 1/18 (2006.01) C10L 1/14 (2006.01) C10L 1/198 (2006.01) C10L 10/00 (2006.01) C10L 1/22 (2006.01)

Patent

CA 2336878

The invention relates to fuel compositions for internal combustion engines comprising a main quantity of a liquid hydrocarbon fuel and a pure portion of at least one propoxilate additive of formula (I), wherein n is an integer ranging from 10 to 20, and R1 represents a straight-chain or branched C8-C18 alkyl radical or C8-C18 alkenyl radical; optionally in combination with at least one detergent additive such as, for example, a polyalkylamine of formula (II) R2-NH2, wherein R2 represents a straight-chain or branched polyalkyl radical having a numerical average molecular weight ranging from approximately 500 to approximately 5000. The invention also relates to fuel additive compositions which contain propoxilates of formula (I) and optionally contain additional additives such as said polyalkylamines of formula (II) used as intake valve cleaners.

L'invention concerne des compositions de carburant pour moteurs à combustion interne, comprenant un volume principal de carburant hydrocarbure liquide et une proportion à effet purifiant d'au moins un additif propoxilate de la formule (I) dans laquelle n vaut un nombre entier compris entre 10 et 20 et R<1> désigne un reste alkyle C8-C18 ou un reste alkényle C8-C18, à chaîne linéaire ou ramifiée; éventuellement en combinaison avec au moins un additif détergent, tel que par ex. un additif polyalkylamine de la formule (II) R<2>-NH2 dans laquelle R<2> désigne un reste polyalkyle à chaîne linéaire ou ramifiée dont le poids moléculaire moyen est compris entre approximativement 500 et approximativement 5.000. L'invention concerne en outre des compositions d'additifs de carburant qui contiennent des propoxilates de la formule (I) et éventuellement d'autres additifs, tels que les polyalkylamines précitées de la formule (II), comme purificateurs de soupape d'admission.

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