US 12,134,742 B2
Fuel composition
William Jay Colucci, Midlothian, VA (US); and John Mengwasser, Cypress, TX (US)
Assigned to Afton Chemical Corporation, Richmond, VA (US)
Filed by Afton Chemical Corporation, Richmond, VA (US)
Filed on Sep. 30, 2022, as Appl. No. 17/937,069.
Prior Publication US 2024/0132791 A1, Apr. 25, 2024
Int. Cl. C10L 1/222 (2006.01); C10L 1/16 (2006.01); C10L 1/2383 (2006.01); C10L 10/18 (2006.01)
CPC C10L 1/2222 (2013.01) [C10L 1/1616 (2013.01); C10L 1/2383 (2013.01); C10L 10/18 (2013.01); C10L 2200/0423 (2013.01); C10L 2230/22 (2013.01); C10L 2270/023 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A gasoline fuel additive package comprising:
(i) a quaternary ammonium internal salt detergent and (ii) a Mannich base detergent mixture,
wherein the quaternary ammonium internal salt is obtained from amines or polyamines that is substantially devoid of any free anion species,
wherein the Mannich base detergent mixture comprises (a) a first Mannich base detergent component derived from a di- or polyamine and (b) a second Mannich base detergent component derived from a monoamine,
wherein the weight ratio of the first Mannich base detergent to the second Mannich base detergent mixture ranges from about 1:6 to about 3:1,
wherein the weight ratio of the quaternary ammonium internal salt detergent and the Mannich base detergent mixture ranges from about 1:25 to about 1:35.