Polyester Quaternary Ammonium Salts

a technology of polyquaternary ammonium salt and polyquaternary ammonium salt, which is applied in the direction of liquid carbonaceous fuels, organic chemistry, fuels, etc., can solve the problems of reducing the maximum power of the engine, affecting the flow of gaseous fuel mixture into the combustion chamber and to the valve sticking, and heavy carbonaceous and oily deposits, etc., to achieve the effect of improving the viscosity profile and material handling properties, reducing the maximum power quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary ammonium quaternary technology, applied in liquid carbon sulferyyum quaternary ammonium quaternary ammonium sulfer

Inactive Publication Date: 2013-09-19
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]The present invention deals with a new class of detergents which offer significant improvements over traditional PIB / amine detergents, including polyisobutylsuccinimide-derived quaternized detergents. A new class of polyester quaternized salts have now been discovered. These polyester quaternized salts have polyester-based hydrocarbyl groups and provide improved viscosity profiles and material handling properties compared to polyisobutylsuccinimide-derived quaternized detergents and related materials. The polyester quaternized salts of the invention provide equivalent detergency and thermal stability performance as other quaternized detergents but also provide the improved viscosity profiles and material handling properties described above

Problems solved by technology

In automobile engines deposits can build up on engine intake valves leading to progressive restriction of the gaseous fuel mixture flow into the combustion chamber and to valve sticking.
Heavy deposits are carbonaceous and oily in appearance.
They cause flow restriction past the valves, which in turn reduces the maximum power of the engine, decreasing fuel economy and increasing emissions.
Thin deposits tend to cause problems on starting the engine and increasing emissions.

Method used

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  • Polyester Quaternary Ammonium Salts
  • Polyester Quaternary Ammonium Salts
  • Polyester Quaternary Ammonium Salts

Examples

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examples

[0092]The invention will be further illustrated by the following examples.

[0093]While the Examples are provided to illustrate the invention, they are not intended to limit it.

example a

Non-Quaternized Polyester Amide (Preparatory Material)

[0094]A non-quaternized polyester amide is prepared by reacting, in a jacketed reaction vessel fitted with stirrer, condenser, feed pump attached to subline addition pipe, nitrogen line and thermocouple / temperature controller system, 6 moles of 12-hydroxystearic acid and 1 mole of dimethylaminopropylamine where the reaction is carried out at about 130° C. and held for about 4 hours. The reaction mixture is then cooled to about 100° C. and zirconium butoxide is added, in an amount so that the catalyst makes up 0.57 percent by weight of the reaction mixture. The reaction mixture is heated to about 195° C. and held for about 12 hours. The resulting product is cooled and collected.

example b

Quaternized Polyester Amide Salt Detergent (Inventive Example)

[0095]A quaternized polyester amide salt detergent is prepared by reacting, in a jacketed reaction vessel fitted with stirrer, condenser, feed pump attached to subline addition pipe, nitrogen line and thermocouple / temperature controller system, 600 grams of the non-quaternized polyester amide of Example A, 120 grams of 2-ethylhexanol, 18.5 grams of acetic acid, and 32.3 ml of propylene oxide, where the reaction is carried out at about 75° C. and the propylene oxide is fed in to the reaction vessel over about 3.5 hours. The reaction mixture is then held at temperature for about 3 hours. 760 grams of product is cooled and collected, which TAN, FTIR and ESI-MS analysis confirms to be about 80% by weight quaternized polyester amide salt detergent, with the remaining material being primarily non-quaternized polyester amide. The collected material has a TAN of 1.26 mg KOH / gram, a TBN of 23.82 mg KOH / gram, a kinematic viscosity ...

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Abstract

The invention relates to polyester quaternary ammonium salts, including amine, amide, and ester salts, processes for making them, and their use as additives, including their use in fuels, such as diesel fuel and fuel oils. The invention particularly relates to the use of polyester quaternary ammonium salts as detergents in fuels and the methods of making them.

Description

FIELD OF THE INVENTION[0001]The invention relates to polyester quaternary ammonium salts, including amine, amide, and ester salts, processes for making them, and their use as additives, including their use in fuels, such as diesel fuel and fuel oils. The invention particularly relates to the use of polyester quaternary ammonium salts as detergents in fuels and the methods of making them.BACKGROUND OF THE INVENTION[0002]Hydrocarbon fuels generally contain numerous deposit-forming substances. When used in internal combustion engines (ICEs), deposits tend to form on and around constricted areas of the engine which are in contact with the fuel. In automobile engines deposits can build up on engine intake valves leading to progressive restriction of the gaseous fuel mixture flow into the combustion chamber and to valve sticking. There are two general types of inlet valve deposits, heavy deposits and thin deposits. These different types of deposits affect the performance of the fuel and t...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10L1/224
CPCC08G63/6852C08G63/912C08L77/12C10L1/2222C10L10/18C10L1/238C10L1/2383C10L1/265C10L1/224C08G63/91C08G69/44C08L67/00C10L1/22
Inventor GREENFIELD, HANNAHTHETFORD, DEANMORETON, DAVID J.
Owner THE LUBRIZOL CORP
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