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Synthesis technology of methyl-etherified melamine resin

A technology of methyl etherified melamine and synthesis process, applied in the field of synthesis technology of methyl etherified melamine resin, can solve the problems of complex production process, low production efficiency, low separation efficiency, etc., and achieves overcoming many processes and improving utilization efficiency, improve work efficiency

Inactive Publication Date: 2016-06-01
赵建英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current synthesis process of methyl etherified melamine resin, the process flow is not easy to implement, the separation efficiency is low, the recycling of raw materials cannot be realized, the production process is complicated, and the production efficiency is low

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0013] The synthesis technique of the methyl etherified melamine resin of the present embodiment comprises the following steps:

[0014] (1) Add the first raw material formaldehyde in the reaction kettle, and add a small amount of alkaline solution to adjust the pH value in the kettle to 8.5;

[0015] (2) Add the second raw material melamine into the reaction kettle, and after mixing evenly, carry out vacuum concentration under the condition that the temperature in the kettle does not exceed 55°C, and stop concentrating when the viscosity of the reaction solution in the kettle reaches 1000cps / 30°C;

[0016] (3) Add a part of the third raw material methanol into the reaction kettle, adjust the pH value in the kettle to 5.5 with a small amount of acid solution; cool the reaction kettle, stop cooling when the temperature in the kettle drops to 35°C, and add a small amount of acid solution to adjust the pH in the kettle The value is 3.2, and after 30 minutes of reaction, a small a...

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Abstract

The invention discloses a synthesis technology of methyl-etherified melamine resin. The technology is characterized in that highly-methyl-etherified melamine resin is prepared from melamine, formaldehyde and methanol through a reaction adopting a nitric acid solution and a sodium hydroxide solution as auxiliary materials under a controlled pH value at a controlled temperature. The synthesis technology of the highly-methyl-etherified melamine resin is simple, and the produced resin has high content of solids, and is very suitable for producing high-grade household electrical appliance product paints, electrostatic spraying paints, container and high-grade metal decoration paints, and high-grade plastic product paints.

Description

technical field [0001] The invention belongs to the field of chemical technology, and in particular relates to a synthesis process of methyl etherified melamine resin. Background technique [0002] The synthesis process of methyl etherified melamine resin at least includes basic processes such as emulsification, catalysis and drying. In the current synthesis process of methyl etherified melamine resin, the process flow is not easy to implement, the separation efficiency is low, the recycling of raw materials cannot be realized, the production process is complicated, and the production efficiency is low. SUMMARY OF THE INVENTION [0003] In order to overcome the above-mentioned technical problems existing in the prior art, the object of the present invention is to provide a kind of synthesis technique of methyl etherified melamine resin. The present invention not only has simple production process, improves work efficiency, but also realizes the guarantee of product qua...

Claims

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Application Information

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IPC IPC(8): C08G12/42C08G12/32
Inventor 赵建英
Owner 赵建英
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