Fuel additive compositions and fuel compositions containing...

C - Chemistry – Metallurgy – 10 – L

Patent

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C10L 1/22 (2006.01) C10L 1/14 (2006.01) C10L 1/238 (2006.01) C10L 10/00 (2006.01) C10L 1/16 (2006.01) C10L 1/18 (2006.01)

Patent

CA 2402851

The present invention is directed to fuel additive compositions of detergents combined with fluidizers and to hydrocarbon fuel compositions containing these fuel additive compositions. The fuel additive compositions of the present invention combine a Mannich detergent, formed from reaction of an alkylphenol with an aldehyde and an amine, with a fluidizer that can be a polyetheramine or a polyether or a mixture thereof and, optionally, with a succinimide detergent. Fuel compositions containing these fuel additive compositions are very effective in reducing intake valve deposits in gasoline fueled engines, especially when the weight ratio of detergent(s) to fluidizer(s) is about 1:1 on an actives basis.

La présente invention concerne des compositions d'additif pour carburant de détergents combinés à des agents de fluidisation et des compositions de carburant hydrocarbure contenant ces compositions d'additif pour carburant. Les compositions d'additif pour carburant selon la présente invention contiennent un détergent Mannich, formé par la réaction d'un alkylphénol avec un aldéhyde et une amine, qui est combiné à un agent de fluidisation qui peut être une polyétheramine ou un polyéther ou un mélange de ces derniers et, facultativement, un détergent au succinimide. Des compositions de carburant contenant les compositions d'additif pour carburant permettent de réduire très efficacement les dépôts des soupapes d'admission dans les moteurs à combustion interne, plus particulièrement lorsque le rapport en poids entre le/les détergents et le/les agents de fluidisation est de l'ordre d'environ 1:1 établi sur la base des matières actives.

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