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Synthetic method for N,N-dicyclohexylamine-2-butanol

A technology of dicyclohexylamine and a synthesis method, which is applied in the synthesis field of N,N-dicyclohexylamine-2-butanol, can solve the problems of few product varieties and limited application coverage, etc., and achieves inhibition of corrosion, improvement of Effect of anodic polarization properties

Inactive Publication Date: 2014-09-17
青岛金日来石墨有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with advanced countries, China's vapor phase antirust technology still has the problems of fewer product varieties and limited application coverage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] In a four-neck flask equipped with a stirring device, a reflux condensing device and a thermometer, add 36.5 grams of cyclohexane, add 2.5 grams of zinc chloride and 33 grams of dicyclohexylamine, and slowly add 11 grams of butylene oxide under stirring conditions , reflux at 80°C to 85°C for 8 hours to generate N,N-dihydroxyisopropylcyclohexylamine. After the reaction is completed, the solvent and unreacted substances are distilled off under reduced pressure, and the product is purified by gel chromatography. Elution was carried out three times with acetone-ethyl acetate at a volume ratio of 20:30 to obtain N,N-dicyclohexylamine-2-butanol as a colorless liquid.

Embodiment 2

[0014] In a four-necked flask equipped with a stirring device, a reflux condensing device and a thermometer, add 43 grams of cyclohexane, add 4 grams of zinc chloride and 36 grams of dicyclohexylamine, and slowly add 11.5 grams of butylene oxide under stirring conditions , reflux at 85°C to 90°C for 7 hours to generate N,N-dihydroxyisopropylcyclohexylamine. After the reaction is completed, the solvent and unreacted substances are distilled off under reduced pressure, and the product is purified by gel chromatography. Elution was carried out three times with acetone-ethyl acetate at a volume ratio of 20:30 to obtain N,N-dicyclohexylamine-2-butanol as a colorless liquid.

Embodiment 3

[0016] In a four-necked flask equipped with a stirring device, a reflux condensing device and a thermometer, add 50 grams of cyclohexane, add 3.8 grams of zinc chloride and 39 grams of dicyclohexylamine, and slowly add 13.9 grams of butylene oxide under stirring conditions , reflux at 80°C to 90°C for 9 hours to generate N,N-dihydroxyisopropylcyclohexylamine. After the reaction is completed, the solvent and unreacted substances are distilled off under reduced pressure, and the product is purified by gel chromatography. Elution was performed twice with acetone-ethyl acetate at a volume ratio of 20:30 to obtain N,N-dicyclohexylamine-2-butanol as a colorless liquid.

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PUM

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Abstract

The invention discloses a synthetic method for N,N-dicyclohexylamine-2-butanol. According to the method, cyclohexane is used as a solvent, zinc chloride is used as a catalyst, cyclohexylamine and epoxybutane are subjected to a heating reflux reaction to produce N,N-dicyclohexylamine-2-butanol; after completion of the reaction, reduced pressure distillation is carried out to remove the solvent and unreacted substances, the product is purified, and a colorless liquid is obtained; dicyclohexylamine and epoxybutane are subjected to the reaction, a catalyst is added to control the ring-opening reaction of epoxybutane so as to allow the reaction to be easily carried out. Synthesized N,N-dicyclohexylamine-2-butanol has multiple activated adsorption centers, can improve anodic polarization of an anode and inhibit corrosive effects and belongs to an anode type corrosion inhibitor.

Description

technical field [0001] The invention relates to the technical field of antirust additive synthesis, in particular to a synthesis method of N,N-dicyclohexylamine-2-butanol. Background technique [0002] Compared with traditional anti-rust methods, gas-phase anti-rust materials have many incomparable advantages. After the metal material is packaged or sprayed, the molecules of the gas-phase corrosion inhibitor begin to diverge, and the molecules of the gas-phase corrosion inhibitor can penetrate into the traditional anti-rust The corner space that cannot be covered by oil has no dead corners in rust prevention; the effective components of gas-phase corrosion inhibitor molecules have a long retention time, and can achieve an anti-rust protection period of more than 10 years; even if there is moisture on the metal surface or the outside air is very humid, the anti-rust agent can A protective film is formed on the surface of the metal to prevent the metal from being corroded and ...

Claims

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Application Information

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IPC IPC(8): C07C213/04C07C215/08C23F11/02
Inventor 修建东刘方旭
Owner 青岛金日来石墨有限公司
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