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US 11,999,917 B2Granted
Mannich-based quaternary ammonium salt fuel additives
AssigneeAfton Chemical Corporation
InventorsScott D. Schwab, Geeta Vadehra, Michel Nuckols
Life of this patent
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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 I
- wherein
- R1 is a hydrocarbyl radical, wherein the number average molecular weight of the hydrocarbyl is about 200 to about 5,000;
- R2 is hydrogen or a C1-C6 alkyl group;
- R3 is hydrogen or, together with R4, a —C(O)— group or a —CH2— group forming a ring structure with the nitrogen atom closest to the aromatic ring;
- R4 is one of hydrogen, C1-C6 alkyl, —(CH2)a—NR5R6, —(CH2)a-Aryl(R1)(R2)(OR3), or together with R3, a —C(O)— group or a —CH2— group forming a ring structure with the nitrogen atom closest to the aromatic ring;
- R5 is C1-C6 alkyl or, together with Ye, forms a C1-C6 alkyl substituted —C(O)O⊖;
- R6 and R7, independently, are C1-C6 alkyl;
- a is an integer from 1 to 10, b is an integer selected from either 0 or 1, and c is an integer from 0 to 10;
- X is oxygen or nitrogen;
- 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 alklylene-C(O)O—R2 or a —C(O)O—R2 group.
8 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 I
- wherein
- R1 is a hydrocarbyl radical, wherein the number average molecular weight of the hydrocarbyl is about 200 to about 5,000;
- R2 is hydrogen or C1-C6 alkyl;
- R3 is hydrogen or, together with R4, a —C(O)— group or a —CH2— group forming a ring structure with the nitrogen atom closest to the aromatic ring;
- R4 is one of hydrogen, C1-C6 alkyl, —(CH2)a—NR5R6, —(CH2)a-ArylR1R2OR3, or together with R3, a —C(O)— group or a —CH2— group forming a ring structure with the nitrogen atom closest to the aromatic ring;
- R5 is C1-C6 alkyl or, together with Y⊖, forms a C1-C6 alkyl substituted —C(O)O⊖;
- R6 and R7, independently, are C1-C6 alkyl;
- a is an integer from 1 to 10, b is an integer selected from either 0 or 1, and c is an integer from 0 to 10;
- X is oxygen or nitrogen;
- 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 alklylene-C(O)O—R2 or a —C(O)O—R2 group.
8 more elements
Dependencies are inferred from the claim text.