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US 12,012,564 B2Granted
Mannich-based quaternary ammonium salt fuel additives
AssigneeAfton Chemical Corporation
InventorsScott D. Schwab, Geeta Vadehra, Michel Nuckols
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Abstract
The present disclosure provides fuel additives including Mannich-based quaternary ammonium salt additives, fuel compositions including such additives, and Methods of improving performance of fuel injector using such additives.
Claims20
A quaternary ammonium salt fuel additive comprising the structure of Formula Ib
- wherein
- R1 is a hydrocarbyl radical, wherein a molecular weight of the hydrocarbyl is about 200 to about 5,000;
- R2 is hydrogen or a C1-C6 alkyl group;
- R′ is a C1 to C4 alkyl linker;
- R5 is C1-C6 alkyl or, together with Y⊖, forms a C1-C6 alkyl substituted —C(O)O⊖;
- R6 is C1-C6 alkyl;
- and
- Y⊖ is an anionic group having a structure R8C(O)O⊖ wherein R8 is one of (i) together with R5 a C1-C6 alkyl group or (ii) a C1-C6 alkyl, an aryl, a C1-C4 alkylene-C(O)O—R2 or a —C(O)O—R2 group.
5 more elements
A fuel composition comprising a major amount of fuel and a minor amount of a quaternary ammonium salt having the structure of Formula Ib;
- wherein
- R1 is a hydrocarbyl radical, wherein a molecular weight of the hydrocarbyl is about 200 to about 5,000;
- R2 is hydrogen or a C1-C6 alkyl group;
- R′ is a C1 to C4 alkyl linker;
- R5 is C1-C6 alkyl or, together with Y⊖, forms a C1-C6 alkyl substituted —C(O)O⊖;
- R6 is C1-C6 alkyl;
- and
- Y⊖ is an anionic group having a structure R8C(O)O⊖ wherein R8 is one of (i) together with R5 a C1-C6 alkyl group or (ii) a C1-C6 alkyl, an aryl, a C1-C4 alkylene-C(O)O—R2 or a —C(O)O—R2 group.
5 more elements
Dependencies are inferred from the claim text.