US 12,012,564 B2
Mannich-based quaternary ammonium salt fuel additives
Scott D. Schwab, Richmond, VA (US); Geeta Vadehra, Richmond, VA (US); and Michel Nuckols, Midlothian, VA (US)
Assigned to Afton Chemical Corporation, Richmond, VA (US)
Filed by Afton Chemical Corporation, Richmond, VA (US)
Filed on Aug. 25, 2021, as Appl. No. 17/445,932.
Prior Publication US 2023/0080086 A1, Mar. 16, 2023
Int. Cl. C10L 1/22 (2006.01)
CPC C10L 1/221 (2013.01) 20 Claims
 
1. A quaternary ammonium salt fuel additive comprising the structure of Formula Ib

OG Complex Work Unit Chemistry
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.