Fuel additive mixtures for gasoline fuels with synergistic...

C - Chemistry – Metallurgy – 10 – L

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

Patent

CA 2478643

The invention relates to novel fuels for Otto engines, containing a synergistically acting mixture of a detergent additive component (A) and a synthetic carrier oil component (B). Said detergent additive component (A) forms at least one bond with a basic nitrogen atom which is substituted with a hydrocarbyl radical having an average numerical molecular weight of about 500 to 1300, the detergent additive component (A) being contained in the fuel at a ration of about 30 to 180 ppm by weight. The carrier oil component (B) consists of at least one compound of general formula R-O-(A-O)< SB > X </SB >-H(I), in which R represents a linear or branched C6-C18 alkyl group, A represents a C3 or C4 alkyl group, and X represents an integer value of 5 to 35, said carrier oil component (B) being contained in the fuel at a ratio of about 10 to 180 ppm by weight.

L'invention concerne de nouveaux carburants pour moteurs à allumage commandé, contenant un mélange à action synergique d'un additif détergent (A) et d'une huile support synthétique (B). Selon cette invention, i) cet additif détergent (A) comprend au moins un composé présentant un atome d'azote basique, substitué par un reste hydrocarbyle d'un poids moléculaire moyen en nombre d'environ 500 à 1 300, et cet additif détergent (A) est contenu dans le carburant dans une proportion quantitative d'environ 30 à 180 ppm en poids et ii) l'huile support (B) contient au moins un composé de formule générale (I), dans laquelle R représente un groupe alkyle en C6-C18 linéaire ou ramifié ; A désigne un groupe alkylène en C3 ou C4 et X représente une valeur en nombre entier de 5 à 35, ladite huile support (B) étant contenue dans le carburant dans une proportion quantitative d'environ 10 à 180 ppm en poids.

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