Patent ID: 6015441
Filing Date: 2000-01-18
Classification: C10L

Abstract:
A fuel composition meeting its CFPP specification and having a reduced tendency for aspiration comprising:(A) a major proportion of a middle distillate petroleum fuel having a wax content of less than 2 wt % at 10.degree. C. below the wax appearancee point of the fuel, and either(i) a final boiling point of greater than 355.degree. C. and either a (90-20%) distillation range of greater than 115.degree. C. or a (FBP-90) distillation range of 30.degree. C. or greater; or(ii) a final boiling point of greater than 360.degree. C., and either a (90-20%) distillation range of greater than 110.degree. C. or a (FBP-90%) distillation range of 25.degree. C. or greater; or(iii) a final boiling point of greater than 370.degree. C. and either a (90-20%) distillation range of greater than 100.degree. C. or a (FBP-90%) distillation range of 25.degree. C. or greater,all temperatures being measured in accordance with ASTM D-86, and(B) a minor proportion of an additive comprising(B1) an ethylene-unsaturated ester copolymer flow improver wherein said ethylene-unsaturated ester copolymer comprises an ethylene copolymer having, in addition to units dervied from ethylene, units of the forumla:--CR.sup.5 R.sup.6 --CHR.sup.7 --wherein R.sup.6 represents hydrogen or a methyl group; R.sup.5 represents a --OCOCR.sup.8 or --COOR.sup.8 group wherein R.sup.8 represents hydrogen or a C.sub.5 or C.sub.28, straight or branched chain alkyl group; and R.sup.7 represents hydrogen or a --COOR.sup.8 or --OCOR.sup.8 group, the flow improver having an unsaturated ester content of 10 mole % or greater; and, optionally(B2) an ethylene-unsaturated ester copolymer that is different from (B1).