The preparation method of gasoline detergent polyisobutylene 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: 2011-12-28
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 235.23g of polyisobutene with an average molecular weight of 800 in 500ml of n-octane solvent, introduce 0.29mol 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 180mmHg 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 the intermediate product 2, heat up to 150°C for 1 hour, and then cool to 80°C to obtain the 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, feed 0.27 mol of chlorine gas, heat up to 120 ° C, react for 3 hours, cool to room temperature, and extract the remaining residues in the system under reduced pressure at 230 mmHg Cl 2 And HCl, get intermediate product one;

[0022] (2) Pass excessive ammonia gas into the intermediate product 1, heat up to 200 DEG C and react for 6 hours, and obtain the 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 the intermediate product 1, heat up to 200 DEG C and react for 8 hours, and obtain the 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 preparation method of gasoline detergent polyisobutene amine. The steps are as follows: firstly reacting polyisobutene and chlorine gas for 3-6 hours to obtain an intermediate product one, then feeding ammonia gas into the intermediate product one, and raising the temperature to 100 React at ~200°C for 5-8 hours to obtain intermediate product 2, then add alkali to it, heat up to 150-200°C and react for 1-2 hours to obtain intermediate product 3, then add NH4Cl at 80-100°C and stir for 1-2 hours, then remove Impurities are the final product. The preparation of the polyisobutylene amine of the present invention is pollution-free, easy to operate, and there is no water in the by-product, which is beneficial to the separation of the product, can effectively inhibit and clean the fuel injection nozzle and the intake valve of the fuel intake system of the automobile engine, and can also obviously Reduces deposits during combustion.

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 Patents(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
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