Composition, method and use
AssigneeInnospec Limited
InventorsAlan Norman Ross, Martin Roberts
Life of this patent
Estimating the term…
Abstract
A quaternary ammonium salt of formula (I): wherein X is a linking group; Y is O, NH or NR1 wherein R1 is H or an optionally substituted hydrocarbyl group; Q+ is a moiety that includes a quaternary ammonium cation; A− is an anion; R2 is an optionally substituted alkylene group; R3 is hydrogen or an optionally substituted hydrocarbyl group; and n is 0 or a positive integer; provided that n is not 0 when R3 is hydrogen.
Claims23
A gasoline fuel or lubricating composition comprising a quaternary ammonium salt of formula (I):
- wherein X is a linking group;
- Y is 0, NH or NR1 wherein R1 is H or an optionally substituted hydrocarbyl group;
- Q+ is a moiety that includes a quaternary ammonium cation;
- A− is an anion;
- R2 is an optionally substituted alkylene group;
- R3 is hydrogen or an optionally substituted hydrocarbyl group;
- and n is 0 or a positive integer;
- provided that n is not 0 when R3 is hydrogen.
A method of improving the performance of an engine, the method comprising combusting in the engine a gasoline fuel composition comprising as an additive a quaternary ammonium salt of formula (I):
- wherein X is a linking group;
- Y is O, NH or NR1 wherein R1 is H or an optionally substituted hydrocarbyl group;
- Q+ is a moiety that includes a quaternary ammonium cation;
- A− is an anion;
- R2 is an optionally substituted alkylene group;
- R3 is hydrogen or an optionally substituted hydrocarbyl group;
- and n is 0 or a positive integer;
- provided n is not 0 when R3 is hydrogen.
Dependencies are inferred from the claim text.