CPC C10L 1/2222 (2013.01) [C07C 213/08 (2013.01); C07C 215/08 (2013.01); C10L 1/1883 (2013.01); C10L 1/222 (2013.01); C10L 1/2225 (2013.01); C10L 1/2383 (2013.01); C10M 133/08 (2013.01); C10M 133/14 (2013.01); C10M 133/54 (2013.01); C10M 133/56 (2013.01); C10M 141/06 (2013.01); C10L 2200/0259 (2013.01); C10L 2200/043 (2013.01); C10L 2200/0423 (2013.01); C10L 2200/0446 (2013.01); C10L 2270/023 (2013.01); C10L 2270/026 (2013.01); C10L 2290/24 (2013.01); C10M 2207/127 (2013.01); C10M 2215/042 (2013.01); C10M 2215/26 (2013.01); C10M 2215/28 (2013.01); C10N 2030/06 (2013.01); C10N 2040/253 (2020.05); C10N 2040/255 (2020.05)] | 16 Claims |
1. A method for preparing a gasoline fuel composition, comprising:
adding to gasoline, a salt or a purified form thereof of a hydrocarbyl-substituted polycarboxylic acid and a hydrocarbyl epoxide quaternized nitrogen compound obtained by reaction of an amino alkanol of formula (13) with a quaternizing agent of formula (14) to obtain a quaternized nitrogen compound of formula (12a), formula (12b) or a mixture thereof according to Eq. (1); wherein the reaction with the quaternizing agent is in the presence of a free hydrocarbyl-substituted polycarboxylic acid of formula (11);
![]() wherein
R5 is H or an aliphatic or aromatic radical comprising 1 to 10 carbon atoms,
R1 is a long-chain hydrocarbyl having a number-average molecular weight (Mn) of 85 to 20,000, or is a polyalkylene radical having a degree of polymerization of 2 to 100; and
R is H or a radical CH2CH(R5)OH or a radical CH(R5)CH2OH;
R6 and R7 are the same or different and are each alkyl, alkenyl, hydroxyalkyl, hydroxyalkenyl, aminoalkyl or aminoalkenyl, or R6 and R7 together are alkylene, oxyalkylene or aminoalkylene; and
A is a straight-chain or branched alkylene or alkenylene radical optionally interrupted by one or more heteroatoms;
wherein addition of the reaction product reduces the level of deposits in an intake system of a gasoline engine.
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