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Branched succinimide dispersant compounds and methods of making the compounds

A technology of compounds and dispersants, applied in chemical instruments and methods, lubricating compositions, chemical/physical processes, etc.

Active Publication Date: 2008-08-06
AFTON CHEMICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Despite advances in the use of dispersants as oil and fuel additives, the ability of dispersants to suspend sludge and / or disperse particles still needs continuous improvement

Method used

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  • Branched succinimide dispersant compounds and methods of making the compounds
  • Branched succinimide dispersant compounds and methods of making the compounds
  • Branched succinimide dispersant compounds and methods of making the compounds

Examples

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preparation example Construction

[0025] This application relates to the preparation of new dispersant compounds and their use. In one aspect of the present application, the dispersant compound comprises the reaction product of (i) a hydrocarbyl carbonyl compound, (ii) a polycarbonyl compound having at least three carbonyl acylated functional groups, and (iii) a primary amine of a polyamine part. The dispersant compounds of the present application have an extended polar region that can yield one or more advantages such as, for example, improved dispersant functionality in fuel and / or lubricating compositions.

[0026] In certain aspects, the dispersant compounds of the present application are prepared by preparing a polyamine polyamide intermediate and reacting it with a hydrocarbyl carbonyl compound. This intermediate can be prepared by reacting a polycarbonyl compound having at least three carbonyl acylation moieties with the primary amine moiety of a polyamine. Other methods suitable for forming the dispe...

Embodiment 1A

[0102] To a 1 L resin pot was added 43.8 g of ethylenediaminetetraacetic acid and 370 ml of water. The resulting suspension was stirred and heated to 100°C. TEPA (113.4 g) was added via addition funnel and the reaction mixture was stirred and heated under nitrogen for 3 hours. The suspension turned into a yellow solution upon addition of the amine. Water was removed from the reaction mixture in vacuo to give 156 g of a yellow viscous oil. The resulting intermediate was diluted with 100 g of water and transferred to a jar.

[0103] A proposed intermediate to the process of Example 1A is shown below as a reaction product:

[0104]

[0105] where R 20 and R 21 can be independently selected from OH, TEPA and salts of TEPA (O + H-TEPA).

Embodiment 1B

[0107] To a 3L resin pot with a stirrer on top was added 951 g of 1250Mn PIBSA. Under nitrogen, the PIBSA was heated to 160 °C with stirring. Then 248.1 g of the intermediate obtained in Example 1A were added through the addition funnel within 1 hour. The reaction mixture was stirred and heated under reduced pressure for 3 hours. The reaction mixture was diluted with 880 g process oil and filtered to give 1800 g of the desired product.

[0108] The reaction of a proposed method of Example 1B is shown below:

[0109]

[0110] where R 20 and R 21 may be independently selected from TEPA succinimide and salts of TEPA succinimide.

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Abstract

In accordance with the disclosure, one aspect of the present application is directed to a dispersant compound comprising the reaction product of (i) a hydrocarbyl carbonyl compound, (ii) a polycarbonyl compound having at least three carbonyl acylating functions, and (iii) a primary amine moiety of a polyamine. Methods of making and methods of using the dispersant compound are also disclosed.

Description

[0001] Description of disclosure content technical field [0002] This application relates to dispersant compounds and methods for their preparation, and more particularly to dispersant compounds useful in fuel and lubricating compositions. Background technique [0003] Considerable effort has been made to develop chemical products useful as dispersant additives for internal combustion engines. Oil-soluble dispersants for lubricating oils have been developed to control deposit and varnish formation and to suspend sludge and other solid matter, such as oxidized base oils, etc., in lubricating oils. When dispersants are added to hydrocarbon fuels used in engines, they are effective in reducing the formation of deposits that typically occur on carburetor ports, throttle bodies, venturis, intake ports, and intake valves. Reduction of these deposits results in improved engine efficiency and reduced hydrocarbon and carbon monoxide emissions. [0004] Despite advances in the use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/16C10L1/22C09K23/16
CPCC10L1/221C10L10/04C10L1/143C07C229/24C10L1/1608C10L1/2383C08F8/10C08G73/02C08G73/1092C10M149/22C10N2040/25
Inventor J·T·洛珀
Owner AFTON CHEMICAL
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