Cold flow improvers for distillate fuel compositions

C - Chemistry – Metallurgy – 10 – L

Patent

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

Patent

CA 2369326

An additive combination for distillate fuels and a fuel composition having improved cold flow properties. The additive combination is incorporated into a major proportion of distillate fuel and is comprised of an ethylene vinyl acetate isobutylene terpolymer in combination with one or more of a maleic anhydride .alpha.-olefin copolymer component, a polyimide component, and an alkyl phenol component each having one or more hydrocarbon substituents within specified carbon number ranges. Optionally, an ethylene vinyl acetate copolymer may also be incorporated as a component therein.

Cette invention concerne une combinaison d'additif pour carburants distillés et une composition de carburant aux caractéristiques d'écoulement à froid améliorées. Cette combinaison d'additif, que l'on intègre dans une fraction importante d'un carburant distillé, se compose d'un éthylène vinyl acétate isobutylène terpolymère avec un ou plusieurs composants anhydride maléique .alpha.-oléfine copolymère, un composant polyimide et un composant alkyl phénol, chacun de ces composants ayant un ou plusieurs substituants d'hydrocarbure avec un nombre déterminé d'atomes de carbone. Il est également possible d'y intégrer un composant supplémentaire sous forme d'éthylène vinyl acétate copolymère.

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