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Method for preparing gasoline detergent polyisobutene amine

A technology of polyisobutylamine and gasoline detergent, applied in the preparation of organic compounds, preparation of amino compounds, chemical instruments and methods, etc., can solve the problems of high cost, difficult separation, difficult catalyst regeneration, etc., to achieve easy operation and reduce deposition matter, beneficial to the effect of separation

Active Publication Date: 2010-06-09
山东星火知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are few domestic reports about polyisobutylene amines, and basically only chlorination and hydroformylation are used, but both methods have defects. The disadvantage of the existing chlorination method is that it will cause environmental damage during the preparation Unfavorable products, and too many by-products, especially the generation of water often accompanied by the product, cause separation difficulties. The hydroformylation reaction requires noble metals as catalysts and must be carried out under very high pressure, and the reaction system viscosity is very high. Large, difficult to achieve catalyst regeneration, so the cost is too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Dissolve 235.23 g of polyisobutene with an average molecular weight of 800 in 500 ml of n-octane solvent, introduce 0.29 mol of chlorine gas, heat up to 100° C., react for 6 hours, cool to room temperature, and extract the residual gas from the system under reduced pressure at 180 mmHg. Cl 2 And HCl, get intermediate product one;

[0017] (2) Pass excessive ammonia gas into intermediate product 1, heat up to 100 DEG C and react for 5 hours, and obtain intermediate product 2;

[0018] (3) Add 15g of sodium methoxide to intermediate product 2, heat up to 150°C for 1 hour, then cool to 80°C to obtain intermediate product 3;

[0019] (4) 10gNH 4 Cl was added to the above-mentioned intermediate product 3, and after stirring at 80° C. for 2 hours, impurities were removed to obtain the polyisobutene amine with a molecular weight of 1028 as the final product of the present invention.

Embodiment 2

[0021] (1) Dissolve 354.46 g of polyisobutene with an average molecular weight of 1300 in 600 ml of n-octane solvent, introduce 0.27 mol of chlorine gas, heat up to 120° C., react for 3 hours, cool to room temperature, and extract the residual gas from the system under reduced pressure at 230 mmHg. Cl 2 And HCl, get intermediate product one;

[0022] (2) Pass excessive ammonia gas into intermediate product 1, heat up to 200 DEG C and react for 6 hours, and obtain intermediate product 2;

[0023] (3) Add 10.5g of sodium amide to the intermediate product 2, heat up to 200°C and react for 1 hour, then cool to 50°C to obtain the intermediate product 3;

[0024] (4) 5gNH 4 Cl was added to the above-mentioned intermediate product 3, and after stirring at 100°C for 1 hour, impurities were removed to obtain the final product of the present invention, polyisobutene amine with a molecular weight of 1700.

Embodiment 3

[0026] (1) Dissolve 380.76 g of polyisobutene with an average molecular weight of 1000 in 700 ml of n-octane solvent, feed 0.32 mol of chlorine gas, heat up to 150° C., react for 3 hours, cool to room temperature, and extract the residual gas from the system under reduced pressure at 200 mmHg. Cl 2 And HCl, get intermediate product one;

[0027] (2) Pass excessive ammonia gas into intermediate product 1, heat up to 200 DEG C and react for 8 hours to obtain intermediate product 2;

[0028] (3) Add 25g of magnesium methoxide to the intermediate product two, heat up to 200°C for 1 hour, then cool to 50°C to obtain the intermediate product three;

[0029] (4) 10g NH 4 Cl was added to the above-mentioned intermediate product 3, and after stirring at 100°C for 1 hour, impurities were removed to obtain the polyisobutene amine with a molecular weight of 1285 as the final product of the present invention.

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Abstract

The invention discloses a method for preparing a gasoline detergent polyisobutene amine. The method comprises the following steps: heating to react polyisobutene with chlorine for 3 to 6 hours to obtain an intermediate product I; introducing ammonia to the intermediate product I, heating to react the intermediate product I with the ammonia for 5 to 8 hours at the temperature of between 100 and 200 DEG C to obtain an intermediate product II; adding alkali into the intermediate product II, heating to react the intermediate product II with the alkali for 1 to 2 hours at the temperature of between 150 and 200 DEG C to obtain an intermediate product III; and adding NH4Cl into the intermediate product III, stirring the mixture at the temperature of between 80 and 100 DEG C for 1 to 2 hours, and then removing impurities to obtain a final product. The method for preparing the polyisobutene amine has the advantages of no pollution, easy operation, no moisture in side products, contribution to product separation, capability of effectively inhibiting and cleaning a fuel spray nozzle and an inlet valve of a fuel inlet system of an automobile engine, and capability of obviously reducing deposits in burning.

Description

technical field [0001] The invention relates to a preparation method of a gasoline detergent, in particular to a preparation method of a gasoline detergent polyisobutene amine. Background technique [0002] With the rapid development of the automobile industry, the number of automobiles in my country is increasing rapidly. While automobiles bring convenience to people's production and life, they also increase the consumption of petroleum resources and the emission of harmful exhaust substances. How to keep the car engine in a good working condition for a long time, so that the fuel oil can be fully burned, reduce fuel consumption and improve emissions. This must reduce the deposits after gasoline combustion, so that the fuel system of the automobile engine can be kept clean for a long time. [0003] Yet the main active ingredient is polyisobutylene succinimide, common polyisobutylene and mineral oil carrier liquid in the disclosed vehicle detergent such as CN1133873A, CN116...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/01C07C209/00C08F10/10C08F8/30
Inventor 张成如
Owner 山东星火知识产权服务有限公司