C - Chemistry – Metallurgy – 10 – L
Patent
C - Chemistry, Metallurgy
10
L
C10L 1/18 (2006.01) C10L 10/14 (2006.01)
Patent
CA 2749344
The present invention relates to a fuel composition comprising at least one biodiesel fuel and comprising 0.05 to 5% by weight of at least one polymer comprising ester groups, which comprises repeat units derived from ester monomers having 16 to 40 carbon atoms in the alcohol radical, and repeat units derived from ester monomers having 7 to 15 carbon atoms in the alcohol radical, and the polymer comprising ester groups has a weight-average molecular weight in the range from 5000 to 100 000 g/mol. The present invention further describes the use of polymers comprising ester groups as flow improvers in fuel compositions which comprise at least one biodiesel fuel. Surprising advantages can be achieved especially with regard to the improvement of the cloud point and the low-temperature storability.
La présente invention porte sur une composition de carburant comprenant au moins un carburant biodiesel, qui comprend 0,05 à 5 % en poids d'au moins un polymère comportant des groupes ester, lequel comprend des motifs répétitifs, qui dérivent d'esters monomères ayant de 16 à 40 atomes de carbone dans le reste alcool, ainsi que des motifs répétitifs qui dérivent d'esters monomères ayant de 7 à 15 atomes de carbone dans le reste alcool, le polymère comprenant des groupes ester ayant une masse moléculaire moyenne en poids comprise dans la plage de 5 000 à 100 000 g/mol. La présente invention porte en outre sur l'utilisation de polymères comportant des groupes ester, en tant qu'agent améliorant l'écoulement de compositions de carburant qui comprennent au moins un carburant biodiesel. On peut parvenir à des avantages surprenants, en particulier pour ce qui concerne l'amélioration du point de trouble et l'aptitude au stockage aux très basses températures.
D'herve Yann
Hess Brian
Hutchinson Phil
Koschabek Rene
Kuenzel Sandra
Evonik Rohmax Additives Gmbh
Marks & Clerk
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