Method for producing THEIC

A technology of cyanuric acid and triethylamine, applied in the direction of organic chemistry, can solve the problems of high energy consumption and long process, and achieve the effects of improving quality, shortening reaction time and ensuring product quality

Active Publication Date: 2015-06-17
JIANGSU YIDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is long and

Method used

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  • Method for producing THEIC
  • Method for producing THEIC
  • Method for producing THEIC

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put 200 grams of cyanuric acid, 400 grams of methanol, 3 grams of solid catalyst tetramethylammonium chloride and 1.5 grams of liquid catalyst triethylamine into a 2000L pressure reactor, at 90 ° C, 5 kg of pressure, within 2 hours 210 grams of ethylene oxide, then keep warm for 1 hour, cool down to 30°C, add 2 grams of activated carbon, heat and decolorize at 50°C, remove the active carbon layer by hot filtration, cool the filtrate to 10°C and centrifuge to get a wet product, bake Well done.

Embodiment 2

[0024] Put 200 grams of cyanuric acid, 400 grams of methanol, 6 grams of solid catalyst tetramethylammonium chloride and 3 grams of liquid catalyst triethylamine into a 2000L pressure reactor, and feed it within 3 hours at 100 °C and 6 kg of pressure 225 grams of ethylene oxide, then keep warm for 2 hours, cool down to 35°C, add 3 grams of activated carbon, heat and decolorize at 60°C, remove the active carbon layer by hot filtration, cool the filtrate to 15°C and centrifuge to get a wet product, bake Well done.

Embodiment 3

[0026] Put 200 grams of cyanuric acid, 400 grams of ethanol, 4 grams of solid catalyst tetramethylammonium chloride and 2 grams of liquid catalyst triethylamine into a 2000L pressure reactor, and feed it within 3 hours at 95 °C and 6 kg of pressure 220 grams of ethylene oxide, then keep warm for 1.5 hours, cool down to 30°C, add 2.5g of activated carbon, heat and decolorize at 55°C, remove the active carbon layer by hot filtration, cool the filtrate to 15°C and centrifuge to get a wet product, bake Well done.

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Abstract

The invention discloses a method for producing THEIC. The method comprises the following steps: enabling cyanuric acid and ethylene oxide to be subjected to addition reaction in an organic solvent under the catalysis reaction of a catalyst, decoloring, filtering, cooling and crystallizing the reaction solution after the reaction is completed, so as to obtain a target product, wherein the organic solvent is methanol or ethanol, the catalyst is a solid-liquid mixed catalyst containing a solid catalyst and a liquid catalyst, the solid catalyst is tetramethylammonium chloride, and the liquid catalyst is triethylamine. According to the technical scheme of the invention, the comprehensive yield of the product can be increased from 88% of the prior art to 95% of the prior art, the product quality is greatly improved, the production period is shortened, the product yield is increased, the use frequency of the solvent are increased to be more than 80 times from the conventional more than 30 times, the raw material consumption is effectively reduced, the reaction time is shortened, the product quality can be further ensured, and guarantee for producing THEIC with high quality is provided.

Description

Technical field: [0001] The invention belongs to the field of chemical synthesis and relates to a method for producing trihydroxyethyl isocyanurate. technical background: [0002] After THEIC (trihydroxyethyl isocyanurate) was expanded into industrialized production by the Allied Company of the United States, it has attracted great attention in developed countries such as Germany, the United States, and Japan. People have developed other applications through research on the molecular structure of THEIC, using THEIC to synthesize polyester, polyester-imide, polyester-amide-imide, polyurethane, etc. With the advancement of science and technology, automobiles, electrical appliances, etc. With the rapid development of the industry, THEIC is widely used to produce polyester insulating varnish, polyurethane flame retardant, raw materials for fiber treatment, etc. [0003] The original production process of this product adopts the addition reaction of cyanuric acid and ethylene ox...

Claims

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Application Information

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IPC IPC(8): C07D251/34
CPCC07D251/34
Inventor 柯建君
Owner JIANGSU YIDA CHEM
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