Additive compositions for fuel oils
AssigneeInfineum International Limited
InventorsAbby Casey, Chris Stubbs
Life of this patent
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Abstract
The invention relates to fuel oil compositions comprising an ester of an alkyl neo-monocarboxylic acid having a total number of from 5 to 30 carbon atoms and an aliphatic acyclic (C2 to C18) alkanol having a total number of from 2 to 18 carbon atoms and a total number of from 2 to 8 hydroxyl groups, wherein the aliphatic acyclic (C2 to C18) alkanol includes one or more alkyl chain(s) and each of said one or more alkyl chain(s) may optionally be interrupted by one or more oxygen atom(s), and to associated fuel additive compositions and uses of fuel additives.
Claims38
A fuel oil composition comprising a major amount of a middle distillate fuel oil having a sulphur content of 0.2% by weight or less, and a minor amount of a fuel oil additive (A) comprising:
- an ester of an alkyl neo-monocarboxylic acid having a total number of from 5 to 30 carbon atoms, and
- an aliphatic acyclic (C2 to C18) alkanol having a total number of from 2 to 18 carbon atoms and a total number of from 2 to 8 hydroxyl groups, wherein said aliphatic acyclic (C2 to C18) alkanol includes one or more alkyl chain(s) and each of said one or more alkyl chain(s) may optionally be interrupted by one or more oxygen atom(s).
A method comprising using a fuel oil additive (A) as an additive, in an effective minor amount, in a middle distillate fuel oil having a sulphur content of less than or equal 0.2 weight %, based on the total weight of the middle distillate fuel oil, to enhance the lubricity performance of said middle distillate fuel oil, wherein the a fuel oil additive (A) comprises:
- an ester of an alkyl neo-monocarboxylic acid having a total number of from 5 to 30 carbon atoms, and
- an aliphatic acyclic (C2 to C18) alkanol having a total number of from 2 to 18 carbon atoms and a total number of from 2 to 8 hydroxyl groups, wherein said aliphatic acyclic (C2 to C18) alkanol includes one or more alkyl chain(s) and each of said one or more alkyl chain(s) may optionally be interrupted by one or more oxygen atom(s).
A method comprising using a fuel oil additive (A) and an anti-static additive (B) as a combination of additives, in an effective minor amount, in a middle distillate fuel oil having a sulphur content of less than or equal 0.2 weight %, based on the total weight of the middle distillate fuel oil, to increase the electrical conductivity of said middle distillate fuel oil and maintain the electrical conductivity of said middle distillate fuel at a substantially constant level for an extended period of time, wherein the fuel oil additive (A) comprises:
- an ester of an alkyl neo-monocarboxylic acid having a total number of from 5 to 30 carbon atoms, and
- an aliphatic acyclic (C2 to C18) alkanol having a total number of from 2 to 18 carbon atoms and a total number of from 2 to 8 hydroxyl groups, wherein said aliphatic acyclic (C2 to C18) alkanol includes one or more alkyl chain(s) and each of said one or more alkyl chain(s) may optionally be interrupted by one or more oxygen atom(s).
A method comprising using the fuel oil additive (A) as an additive, in an effective minor amount, in a middle distillate fuel oil having a sulphur content of less than or equal 0.2 weight %, based on the total weight of the middle distillate fuel oil, to reduce the wear rate in a fuel supply system of a combustion apparatus employing said middle distillate fuel oil, wherein the fuel oil additive (A) comprises:
- an ester of an alkyl neo-monocarboxylic acid having a total number of from 5 to 30 carbon atoms, and
- an aliphatic acyclic (C2 to C18) alkanol having a total number of from 2 to 18 carbon atoms and a total number of from 2 to 8 hydroxyl groups, wherein said aliphatic acyclic (C2 to C18) alkanol includes one or more alkyl chain(s) and each of said one or more alkyl chain(s) may optionally be interrupted by one or more oxygen atom(s).
Dependencies are inferred from the claim text.