Patent ID: 9340742
Filing Date: 2016-05-17
CPC Classification: C10L

Claim Text:
1. A sulfur-free and halogen-free synergistic additive concentrate for a fuel injected engine comprising a mixture of: (a) an alkoxylated quaternary ammonium compound having the formula (R (b) a hydrocarbyl compound containing a hydrogen-bonding group other than an alkyl hydroxyl group selected from the group consisting of a hydrocarbyl acid; hydrocarbyl polyacid; hydrocarbyl substituted hydroxybenzene; hydrocarbyl substituted succinic diamide, hydrocarbyl substituted succinic acid/amide, hydrocarbyl substituted succinic diacid, hydrocarbyl substituted succinic diester, hydrocarbyl substituted succinic ester/acid, hydrocarbyl substituted succinic amide/ester, hydrocarbyl substituted succinimide; a reaction product derived from (i) a hydrocarbyl substituted dicarboxylic acid, anhydride, or ester and (ii) an amine compound or salt thereof of the formula wherein R 3 is selected from the group consisting of hydrogen and a hydrocarbyl group containing from about 1 to about 15 carbon atoms, and R 4 is selected from the group consisting of hydrogen and a hydrocarbyl group containing from about 1 to about 20 carbon atoms, wherein the reaction product (2) on average has less than 1 aminotriazole group per molecule, and mixtures thereof, wherein the hydrocarbyl substituent has a number average molecular weight of from about 100 to about 1500, and wherein a weight ratio of (a) to (b) in the additive mixture ranges from about 1:5 to about 1:1.