Method for synthesizing beta-isoalkanol amino valeric acid cyclohexylamine

A technology of cyclohexylamine aminovaleric acid and a synthesis method, which is applied in the field of vapor phase antirust additive synthesis, can solve the problems of few product varieties and limited application coverage, achieve strong antirust effect, improve anodic polarization performance, and react Simple and easy to operate effect

Inactive Publication Date: 2014-09-10
YANTAI HENGDIKE ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although vapor phase anti-corrosion technology has entered China for a short time, it has developed rapidly. However, compared with advanced countries, China's vapor phase anti-corrosion technology still has the problems of fewer product varieties and limited application coverage.

Method used

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  • Method for synthesizing beta-isoalkanol amino valeric acid cyclohexylamine
  • Method for synthesizing beta-isoalkanol amino valeric acid cyclohexylamine
  • Method for synthesizing beta-isoalkanol amino valeric acid cyclohexylamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In a four-neck flask equipped with a stirring device, a reflux condensing device and a thermometer, add 120 grams of toluene, add 1.12 grams of zinc chloride and 48 grams of valerolactam, slowly add 28 grams of alkylene oxide, and stir at 70 ° C Reflux reaction at ~75°C for 10 hours. After the reaction was completed, the solvent and unreacted substances were distilled off under reduced pressure to obtain a colorless liquid β-isoalkanol valerolactam. Add 20 178 grams of sodium hydroxide solution carry out hydrolysis reaction, obtain β-isoalkanol base sodium valerate solution, then slowly add dilute hydrochloric acid solution in β-isoalkanol base sodium valerate solution, adjust pH to about 1.0, The solid product was precipitated, washed back with water to obtain β-isoalkanol aminovaleric acid, and β-isoalkanol aminovaleric acid was added to 47.8 g of cyclohexylamine, stirred, heated to dissolve, and cooled to obtain β-isoalkanol aminovaleric acid Isoalkanolaminovaleric A...

Embodiment 2

[0023] In a four-neck flask equipped with a stirring device, a reflux condensing device and a thermometer, add 145 grams of toluene, add 1.32 grams of zinc chloride and 48.4 grams of valerolactam, slowly add 32 grams of alkylene oxide, and stir at 70 ° C Reflux reaction at ~80°C for 8 hours. After the reaction was completed, the solvent and unreacted substances were distilled off under reduced pressure to obtain a colorless liquid β-isoalkanol valerolactam. Add 20 178 grams of sodium hydroxide solution carry out hydrolysis reaction, obtain β-isoalkanol base sodium valerate solution, then slowly add dilute hydrochloric acid solution in β-isoalkanol base sodium valerate solution, adjust pH to about 1.0, The solid product was precipitated, washed back with water to obtain β-isoalkanol aminovaleric acid, and β-isoalkanol aminovaleric acid was added to 50.5 g of cyclohexylamine, stirred, heated to dissolve, and cooled to obtain β-isoalkanol aminovaleric acid. Isoalkanolaminovaleric...

Embodiment 3

[0025] In a four-neck flask equipped with a stirring device, a reflux condensing device and a thermometer, add 123 grams of toluene, add 2.4 grams of zinc chloride and 61.4 grams of valerolactam, slowly add 30 grams of alkylene oxide, and stir at 75 ° C Reflux reaction at ~80°C for 9 hours. After the reaction was completed, the solvent and unreacted substances were distilled off under reduced pressure to obtain a colorless liquid β-isoalkanol valerolactam. Add 20 178 grams of sodium hydroxide solution carry out hydrolysis reaction, obtain β-isoalkanol base sodium valerate solution, then slowly add dilute hydrochloric acid solution in β-isoalkanol base sodium valerate solution, adjust pH to about 1.0, The solid product was precipitated, washed back with water to obtain β-isoalkanol aminovaleric acid, and β-isoalkanol aminovaleric acid was added to 66.5 g of cyclohexylamine, stirred, heated to dissolve, and cooled to obtain β-isoalkanol aminovaleric acid. Isoalkanolaminovaleric ...

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Abstract

The invention discloses a method for synthesizing beta-isoalkanol amino valeric acid cyclohexylamine. The method comprises the steps: with toluene as a solvent and zinc chloride as a catalyst, after a reaction of epoxyalkane and valerolactam is completed under a stirring condition, carrying out reduced pressure distillation to remove the solvent and unreacted materials, and thus obtaining a colorless liquid beta-isoalkanol valerolactam; adding a sodium hydroxide solution, carrying out a hydrolysis reaction, and thus obtaining a beta-isoalkanol amino sodium valerate solution; and then slowly adding an acid solution, adjusting the pH to about 1.0, adding the precipitated beta-isoalkanol amino valeric acid into cyclohexylamine, and thus obtaining beta-isoalkanol amino valeric acid cyclohexylamine, wherein the reaction is easily carried out. The synthetic product has multiple active adsorption centers, can improve the anode polarization performance, and inhibits corrosion; and the synthetic product also has characteristics of binding amino, carboxyl and cyclohexylamine salt with metals, and has a strong rust prevention effect.

Description

technical field [0001] The invention relates to the technical field of synthesis of vapor phase antirust additives, in particular to a synthesis method of beta-isoalkanol aminovaleric acid cyclohexylamine. Background technique [0002] Corrosion is a phenomenon in which metal materials and the surrounding environment are destroyed by chemical or electrochemical reactions. It is a reverse process of smelting. Natural environments and industrial media can cause corrosion of metal materials. In the process of transportation and storage of metals and their products, especially sea transportation and high-heat and humid land transportation, it is inevitable to involve rust prevention issues. [0003] Vapor-phase anti-rust technology is a kind of anti-rust technology based on the application of gas-phase anti-rust agent. The solid-state gas-phase anti-rust agent is volatile at room temperature and can continuously volatilize and fill the entire packaging container. The gas-phase a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C227/18C07C229/12C07C209/00C07C211/35C23F11/02
Inventor 修建东刘方旭
Owner YANTAI HENGDIKE ENERGY TECH
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