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The preparation method of polyisobutylene amine

A technology of polyisobutylene amine and polyisobutylene, which is applied in the field of preparation of polyisobutylene amine, can solve the problems of large equipment investment and high pressure

Active Publication Date: 2016-03-09
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many studies on the synthesis of polyisobutylene amines. Patent US4832702 proposes that active polyisobutene is catalyzed to carry out carboxylation reaction under the condition of 280 atmospheric pressure to generate polyisobutenyl alcohol, and then ammonolysis under 120 atmospheric pressure to generate polyisobutylene amine. The process is simple, the product yield is high, but the pressure is high and the equipment investment is large

Method used

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  • The preparation method of polyisobutylene amine
  • The preparation method of polyisobutylene amine
  • The preparation method of polyisobutylene amine

Examples

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Effect test

Embodiment 1

[0035] First, add 100g of high-activity polyisobutylene into the reactor, and then add about 60g of functional solvent polyether into the reactor. , reacted at 70°C for 8h to obtain a product with an epoxy polyisobutylene content of 60%, then, hydrocyclone evaporation removed moisture and acetic acid, added ethanolamine 12.2g and water 1.8g, reacted at 120°C for 12h, and finally rotated Free ethanolamine and water were removed by evaporation, and filtered to obtain the target product with an amine value of 16 mgKOH / g.

Embodiment 2

[0037] First, add 100g of high-activity polyisobutylene into the reaction kettle, and then add about 30g of functional solvent oil-soluble polyether into the reaction kettle. , 60g of hydrogen peroxide was evenly added dropwise within 3h, and then reacted at 95°C for 2h to obtain a product with an epoxy polyisobutylene content of 71%. 36g of alcohol was reacted at 200°C for 2h, and finally the free ethylenediamine and isopropanol were removed by hydrocyclone evaporation, and press-filtered to obtain polyisobuteneamine with an amine value of 21mgKOH / g.

Embodiment 3

[0039] First, add 100g of high-activity polyisobutylene into the reaction kettle, and then add about 50g of functional solvent aromatic hydrocarbon mineral spirits into the reaction kettle. Add 30g of hydrogen peroxide evenly dropwise within 2 hours, and then react at 95°C for 2 hours to obtain a product with an epoxy polyisobutylene content of 75%. Then, remove water and acetic acid by hydrocyclone evaporation, and add 146g of ethylenediamine and isopropanol 60 g, reacted at 200° C. for 2 h, and finally removed free ethylenediamine and isopropanol by hydrocyclone evaporation, and press-filtered to obtain polyisobutylene amine with an amine value of 24 mgKOH / g.

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Abstract

The invention relates to a method for preparing polyisobutylene amine. The method comprises the following steps: dissolving polyisobutylene with more than or equal to 85% of alpha olefinic bonds in a functional solvent, reacting the solution with hydrogen peroxide at 70-95 DEG C in the presence of acetic acid so as to obtain an intermediate product with epoxy polyisobutylene content of more than or equal to 60% after the reaction, and recycling the acetic acid in the mixed solution by virtue of rectification or membrane separation; adding acid, water or alcohol into the epoxy polyisobutylene, and reacting with ammonia or amine substance at 120-200 DEG C so as to obtain the polyisobutylene amine; recycling volatile matters steamed out from a rotary liquid, wherein the mass ratio of the polyisobutylene, the acetic acid and the hydrogen peroxide is 1:(0.02-0.3):(0.1-0.6); the molar ratio of the epoxy polyisobutylene, the catalytic solvent and the amine substance added in the aminolysis process is 1:(1-10):(2-20); the method is environment-friendly in preparation process, obvious in energy-saving effect and capable of avoiding or reducing resource waste or possible environmental pollution and realizing a recycling economic development mode.

Description

technical field [0001] The invention relates to a preparation method of polyisobutene amine, in particular to a preparation method of polyisobutene amine for fuel oil detergent and dispersant, which is a gasoline and diesel oil cleansing and dispersing agent for reducing and preventing the formation of deposits in the intake system and fuel system of gasoline and diesel engines. The preparation process of the agent. Background technique [0002] As a surface active substance, polyisobutylamine has multiple functions such as cleaning, dispersing, demulsification and rust prevention. It can disperse or solubilize potential deposits formed by oxidation in gasoline and diesel. Prevent them from depositing on key parts of gasoline and diesel engines, such as nozzles, intake valves, combustion chambers, etc., and for the deposits that have formed in these parts, the detergent and dispersant in gasoline and diesel can peel them off from the metal surface, Disperse and solubilize ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/10C08F8/30C08F8/32
CPCY02P20/10
Inventor 南春模陈志明李坤焦真李鹤春刘伟边侠玲杨艳文任佳乔树奎
Owner PETROCHINA CO LTD
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