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Novel polyetheramine used as a gasoline detergent and a synthetic method thereof

A gasoline detergent and polyetheramine technology, applied in the field of new polyetheramine and its synthesis, can solve the problems of limited application and high stability, and achieve the effects of good selectivity, improved dynamic performance and high conversion rate

Active Publication Date: 2015-07-08
CESTOIL IND SERVICES SHENZHEN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amine group and polyether in the polyether amine prepared by this method are connected by ester bonds, and its stability is not as high as that of the polyether amine prepared by catalytic reduction amination, and its application in gasoline detergents is limited to a certain extent.

Method used

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  • Novel polyetheramine used as a gasoline detergent and a synthetic method thereof
  • Novel polyetheramine used as a gasoline detergent and a synthetic method thereof
  • Novel polyetheramine used as a gasoline detergent and a synthetic method thereof

Examples

Experimental program
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Effect test

example 1

[0033] Add 10 kilograms of polypropylene glycols (molecular weight 1000), 1 kilogram of acetylacetone, 20 kilograms of toluene and 6.2 grams of DMAP composite catalysts in the 100 liters of reactors that water separator and condensation pipe are housed, stir 4 hours at 25 ℃ earlier, then stir Slowly heated to reflux (~110°C), and the generated water was carried out by toluene. When no water was formed, the reaction was stopped and the temperature was lowered to 70°C.

[0034] Add 0.6 kg of ethylenediamine to the above reaction system, and slowly heat it to reflux (~110°C) under stirring. The generated water is carried out by toluene. Low boiling substances such as toluene were removed under reduced pressure at ℃ to obtain 11.8 kg of the product polyetheramine.

example 2

[0036] Add 10 kilograms of polypropylene glycols (molecular weight 1000), 1.16 kilograms of methyl acetoacetate, 20 kilograms of dimethylbenzene and 3.5 gram imidazole composite catalysts in 100 liters of reactors that water trap and condensation pipe are housed, first 25 ℃ of stirring 4 hours, Then slowly heated to reflux (~140°C) under stirring, the generated water was carried out by xylene, and when no water was formed, the reaction was stopped and the temperature was lowered to 70°C.

[0037] Add 0.6 kg of ethylenediamine to the above reaction system, and slowly heat it to reflux (~140°C) under stirring. The generated water is carried out by xylene. Low boilers such as xylene were removed under reduced pressure at 100°C to obtain 12.1 kg of the product polyetheramine.

example 3

[0039] Add 20 kilograms of polypropylene glycols (molecular weight 2000), 1 kilogram of acetylacetone, 40 kilograms of toluene and 6.2 grams of DMAP composite catalysts in the 100 liters of reactors that water trap and condensation pipe are housed, stir 4 hours at 25 ℃ earlier, then stir Slowly heated to reflux (~110°C), and the generated water was carried out by toluene. When no water was formed, the reaction was stopped and the temperature was lowered to 70°C.

[0040] Add 0.86 kg of piperazine to the above reaction system, and slowly heat it to reflux (~110°C) under stirring, the generated water is carried out by toluene, and when anhydrous is formed, the vacuum degree is 0.1MPa, and the temperature range is 60~100°C Low boilers such as toluene were removed under reduced pressure to obtain 21.9 kg of the product polyetheramine.

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PUM

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Abstract

The invention relates to novel polyetheramine used as a gasoline detergent and a synthetic method thereof. The polyetheramine is shown as a general formula (I) shown in the specification. In the formula (I), n is the number of repetitive units of polyether chain segments and is between 10 and 40, R1 is one of alkyl (C1-2), R2 is one of alkyl (C1-2) or alkoxy (C1-2), and X is an organic group containing amino. The synthetic method includes following two steps: subjecting polyether and ketene or acetoacetate to condensation, and reacting the product of the condensation with an amine to produce the polyetheramine. The polyetheramine is used as the gasoline detergent, inhibits or cleans deposited carbon in engine fuel nozzles, inlet valves and combustion chambers, reduces combustion oil consumption, prolongs service lifetime of engines, reduces discharge of automobile exhaust, and has important application value.

Description

technical field [0001] The present invention relates to a novel polyether amine used as gasoline detergent and its synthesis method. Background technique [0002] At present, the olefin content in my country's finished gasoline is relatively high, which is about 2 to 4 times that of similar foreign products. It is well known that olefin components (especially diolefins) are unstable, and are prone to oxidation and polymerization under the high-temperature working conditions of the engine, and under the combined action of other impurities in gasoline, the fuel nozzles, intake valves and combustion chambers of the engine Deposits are produced in other parts, which affect the performance of the engine, leading to the deterioration of the gasoline combustion process, increased fuel consumption, and increased exhaust pollutant emissions, which is an important reason for the current domestic smog. The most economical and convenient way to solve the above problems is to add deterg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/48C08G65/333C08G65/332C08G65/331C10L1/238
Inventor 熊靓严斌
Owner CESTOIL IND SERVICES SHENZHEN CO LTD
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