Polymeric fuel additive and method of making the same, and...

C - Chemistry – Metallurgy – 10 – L

Patent

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C10L 1/22 (2006.01)

Patent

CA 2306709

A polymeric fuel additive, a method of making the additive, and a fuel containing the additive are disclosed. The additive is prepared by isothermally mixing an ethoxylated alcohol and an amide, wherein the ethoxylated alcohol comprises at least about 75 weight percent of at least one linear, straight-chain alcohol having a hydrocarbon chain length of a about nine to about fifteen carbon atoms, and wherein the amide is formed by reacting an alcohol amine with an equimolar amount of an alkyl ester of a fatty acid or derivative. The alcohol/amide product is isothermally mixed with a substantially equimolar amount of an ethoxylated fatty acid having a hydrocarbon chain length of about nine to about fifteen carbon atoms to produce the polymeric additive. The inventive method is carried out with gentle mixing so as to avoid molecular degradation of the additive.

L'invention concerne un additif polymère pour carburant, un procédé de fabrication dudit additif et un carburant renfermant cet additif. L'additif s'obtient par mélange isotherme d'un alcool ethoxylé et d'un amide, l'alcool ethoxylé renfermant, en poids, au moins 75 % d'au moins un alcool linéaire à chaîne droite ayant une longueur de chaîne hydrocarbonée d'environ neuf à environ quinze atomes de carbone et l'amide s'obtenant par réaction d'un alcool-amine avec une quantité équimolaire d'un alkyle-esther d'un acide gras ou dérivé. L'additif polymère est obtenue par mélange isotherme de la composition alcool/amide à une quantité sensiblement équimolaire d'un acide gras d'ethoxylé ayant une longueur de chaîne hydrocarbonée d'environ neuf à environ quinze atomes de carbone. Le procédé de l'invention consiste en un brassage lent et régulier destiné à éviter une dégradation moléculaire de l'additif.

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