Ultra-low molecular weight imide containing quaternary ammonium salts having short hydrocarbon tails
AssigneeThe Lubrizol Corporation
InventorsDavid C. Arters, David J. Moreton, James H. Bush, Paul R. Stevenson, Paul E. Adams
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Abstract
The present technology is related to imide containing quaternary ammonium salts having a hydrocarbyl substituent of number average molecular weight less 300, and additive packages having such quaternary ammonium salts and improved stability.
Claims19
A composition comprising an imide containing quaternary ammonium salt (“imide quat”), wherein the imide quat comprises the reaction product of:
- a) a quaternizable compound that is the reaction product of:
- (i) a hydrocarbyl-substituted acylating agent, wherein the hydrocarbyl-substituent has a number average molecular weight less than 300 and comprises at least one dodecenyl succinic anhydride, dodecenyl succinic acid, hexadecenyl succinic anhydride, hexadecenyl succinic acid, octadecenyl succinic anhydride, octadecenyl succinic acid, or mixtures thereof, and
- (ii) a nitrogen containing compound having a nitrogen atom capable of reacting with said hydrocarbyl-substituted acylating agent to form an imide, and further having at least one quaternizable amino group;
- and
- b) a quaternizing agent suitable for converting the quaternizable amino group of the nitrogen containing compound to a quaternary nitrogen.
A composition comprising an imide containing quaternary ammonium salt (“imide quat”) and a hydrolyzed alkenyl succinic acid or anhydride with a molecular weight Mn ranging from about 225 to about 1000, wherein the imide quat comprises the reaction product of:
- a) a quaternizable compound that is the reaction product of:
- (i) a hydrocarbyl-substituted acylating agent, wherein the hydrocarbyl-substituent has a number average molecular weight of less than 300 and comprises at least one dodecenyl succinic anhydride, dodecenyl succinic acid, hexadecenyl succinic anhydride, hexadecenyl succinic acid, octadecenyl succinic anhydride, octadecenyl succinic acid, or mixtures thereof, and
- (ii) a nitrogen containing compound having a nitrogen atom capable of reacting with said hydrocarbyl-substituted acylating agent to form an imide, and further having at least one quaternizable amino group;
- and
- b) a quaternizing agent suitable for converting the quaternizable amino group of the nitrogen containing compound to a quaternary nitrogen.
Dependencies are inferred from the claim text.