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Preparation method for cyclohexylamine acetate

A technology of cyclohexylamine acetate and cyclohexylamine, which is applied in the field of organic compound preparation, can solve problems such as dependence and undiscovered patent publications, and achieve the effects of easy operation, improved market competitiveness, and simple steps

Inactive Publication Date: 2020-02-21
TIANJIN CHEM REAGENT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no large-scale industrialized product at present, and can only rely on imports and a small amount of laboratory-scale batches
[0003] Through the search, no patent publications related to the patent application of the present invention have been found

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of cyclohexylamine acetate, the steps are as follows:

[0023] (1) Reaction

[0024] Put 200KG pure water and 150KG cyclohexylamine into a 500-liter reactor with jacket cooling device, electric stirring, thermometer, water circulation condenser and liquid high-level feeder, and turn on the jacket cooling circulation device at the same time. And the condensed water of the water cycle condenser. This reaction is exothermic and exothermic violently. Therefore, before the reaction starts, on the one hand, it is necessary to control the temperature in the reactor through the jacket condensed water so that the aqueous solution in the reaction system will not boil; Amines can be condensed back into the system to maintain the normal progress of the reaction. Before starting the reaction, add 90KG acetic acid into the liquid high-level feeder, the molar ratio of cyclohexylamine to acetic acid is 1:1, and then drop all the acetic acid in the high-level fee...

Embodiment 2

[0030] A preparation method of cyclohexylamine acetate, the steps are as follows:

[0031] (1) Reaction

[0032] Put 200KG pure water and 150KG cyclohexylamine into a 500-liter reactor with jacket cooling device, electric stirring, thermometer, water circulation condenser and liquid high-level feeder, and turn on the jacket cooling circulation device at the same time. And the condensed water of the water cycle condenser. This reaction is exothermic and exothermic violently. Therefore, before the reaction starts, on the one hand, it is necessary to control the temperature in the reactor through the jacket condensed water so that the aqueous solution in the reaction system will not boil; Amines can be condensed back into the system to maintain the normal progress of the reaction. Before starting the reaction, add 95KG acetic acid into the liquid high-level feeder, the molar ratio of cyclohexylamine to acetic acid is 1:1.05, and then drop all the acetic acid in the high-level ...

Embodiment 3

[0038] A preparation method of cyclohexylamine acetate, the steps are as follows:

[0039] (1) Reaction

[0040] Put 200KG of purified water and 150KG of cyclohexylamine into a 500-liter reactor with jacket cooling device, electric stirring, thermometer, water circulation condenser and liquid high-level feeder, and turn on the jacket cooling circulation device at the same time. And the condensed water of the water cycle condenser. This reaction is exothermic and exothermic violently. Therefore, before the reaction starts, on the one hand, it is necessary to control the temperature in the reactor through the jacket condensed water so that the aqueous solution in the reaction system will not boil; Amines can be condensed back into the system to maintain the normal progress of the reaction. Before starting the reaction, add 100KG acetic acid into the liquid high-level feeder, the molar ratio of cyclohexylamine to acetic acid is 1:1.1, and then drop all the acetic acid in the h...

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PUM

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Abstract

The invention discloses a preparation method for cyclohexylamine acetate. The preparation method comprises the following steps: sequentially adding purified water and cyclohexylamine under stirring, dropwise adding acetic acid, after all acetic acid is added, continuing stirring for 1 hour, and stopping stirring; placing a reacted material into a crystallization kettle; and carrying out natural cooling for 4 hours, extracting the cyclohexylamine acetate generated by a reaction out of a liquid, carrying out solid-liquid separation so as to obtain a solid namely a cyclohexylamine acetate crystal, placing the obtained cyclohexylamine acetate crystal into a vacuum electric heating drying oven, and carrying out vacuum drying at 80 DEG C for 4 hours so as to obtain the cyclohexylamine acetate. The method provided by the invention is applicable to industrial mass production, meets the requirement for quality, and is low in cost and high in production efficiency. During production, the methoddoes not need to adopt expensive special equipment, so the cost of production can be reduced; the market competitiveness of an enterprise is improved; and the cyclohexylamine acetate can be more widely popularized and applied in the market. In addition, the method is well received by related users.

Description

technical field [0001] The invention belongs to the technical field of organic compound preparation, in particular to a preparation method of cyclohexylamine acetate. Background technique [0002] Cyclohexylamine acetate has been used as a new type of latex additive. However, there is no large-scale industrialized product at present, and it can only rely on imports and a small amount of laboratory-scale batches. [0003] Through searching, no patent publications related to the patent application of the present invention have been found. Contents of the invention [0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a preparation method of cyclohexylamine acetate, which is suitable for large-scale industrial production, meets quality requirements, has low cost and high production efficiency. [0005] The technical solution adopted by the present invention to solve its technical problems is: [0006] A preparation metho...

Claims

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Application Information

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IPC IPC(8): C07C209/00C07C209/86C07C211/35C07C51/41C07C51/42C07C51/43C07C53/10
CPCC07C51/412C07C51/42C07C51/43C07C209/00C07C209/86C07C211/35C07C53/10
Inventor 杨成良徐博刚
Owner TIANJIN CHEM REAGENT RES INST
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