Compositions, Uses and Methods for Improving The Low Temperature Properties of a Middle Distillate Fuel
AssigneeInnospec Limited
InventorTorsten Meyer
Life of this patent
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Abstract
A method of improving the low temperature properties of a middle distillate fuel composition comprising: (a) a nitrogen-containing dispersant; and (b) one or more low temperature property enhancers which are not fumarate vinyl ester copolymers and which are selected from (x) wax antisettling additives; (y) middle distillate flow improvers and mixtures thereof; the method comprising adding to the fuel an additive (c) which is a copolymer comprising units of formula (A): and units of formula (B): wherein R is an alkyl group and each of R1 and R2 is an alkyl group.
Claims22
A method of improving the low temperature properties of a middle distillate fuel composition comprising:
- (a) a nitrogen-containing dispersant;
- and
- (b) one or more low temperature property enhancers which are not fumarate vinyl ester copolymers and which are selected from (x) wax antisettling additives;
- (y) middle distillate flow improvers and mixtures thereof;
- the method comprising adding to the fuel an additive (c) which is a copolymer comprising units of formula (A):
- and units of formula (B):
- wherein R is an alkyl group and each of R1 and R2 is an alkyl group.
(canceled)
An additive composition for improving the low temperature properties of a middle distillate fuel composition the additive composition comprising:
- (a) a nitrogen-containing dispersant;
- (b) one or more low temperature property enhancers which are not fumarate vinyl ester copolymers and which are selected from (x) wax antisettling additives (y) middle distillate flow improvers and mixtures thereof;
- and
- (c) a copolymer comprising units of formula (A):
- and units of formula (B):
- wherein R is an alkyl group and each of R1 and R2 is an alkyl group.
A middle distillate fuel composition comprising:
- (a) a nitrogen-containing dispersant;
- (b) one or more low temperature property enhancers which are not fumarate vinyl ester copolymers and which are selected from (x) wax antisettling additives;
- (y) middle distillate flow improvers and mixtures thereof;
- and
- (c) a copolymer comprising units of formula (A):
- and units of formula (B):
- wherein R is an alkyl group and each of R1 and R2 is an alkyl group.
(canceled)
Dependencies are inferred from the claim text.