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A kind of production method of triglycidyl isocyanurate

A technology of oxypropyl isocyanurate and its production method, which is applied in the direction of polyester paint, coating, organic chemistry, etc., can solve the problems of high consumption of raw materials, many side reactions, and unsuitability to market demand, etc., and meet the technological conditions Effects of maturity, stable product quality, product yield and quality improvement

Inactive Publication Date: 2011-12-07
CHANGZHOU NIUTANG CHEM PLANT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the production process of triglycidyl isocyanurate is mainly to discuss the influence of raw material ratio, catalyst type and dosage, and different processes on the product yield. Generally, a two-step synthesis is adopted under the condition of a special catalyst. Although the production rate has been improved, the consumption of raw materials is large and the side reactions are many, which does not meet the growing market demand.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (a) synthesis step: the charging capacity of raw material is as follows:

[0015] Epichlorohydrin 1251KG

[0016] Water 60KG

[0017] Cyanuric acid 125.2KG

[0018] Tetramethylammonium chloride 5.1KG

[0019] Benzyltrimethylammonium Chloride 2.5KG

[0020] Caustic soda 145.3KG

[0021] Turn on the feeding pump, put the epichlorohydrin into the high-level tank, put it into the reaction kettle, and start stirring; put cyanuric acid, water and catalyst into the reaction kettle in sequence. After feeding the material, turn on the steam to raise the temperature, the temperature in the kettle is 75°C, reflux for 13 minutes, continue to raise the temperature by 90°C, reflux and divide the water, and the water separation temperature is 104°C. After water separation, cool down, and when the temperature in the kettle reaches 48°C, the reaction solution is directly put into the alkali-adding kettle. When the alkali-adding kettle is turned on and cooled to 28°C, start to add ...

Embodiment 2

[0028] (a) synthesis step: the charging capacity of raw material is as follows:

[0029] Epichlorohydrin 1160KG

[0030] Water 60KG

[0031] Cyanuric acid 134KG

[0032] Tetramethylammonium chloride 4KG

[0033] Benzyltrimethylammonium Chloride 3.5KG

[0034] Caustic soda 145KG

[0035] Turn on the feeding pump, put the epichlorohydrin into the high-level tank, put it into the reaction kettle, and start stirring; put cyanuric acid, water and catalyst into the reaction kettle in sequence. After feeding the material, turn on the steam to raise the temperature, the temperature in the kettle is 75°C, reflux for 13 minutes, continue to raise the temperature by 90°C, reflux and divide the water, and the water separation temperature is 104°C. After water separation, cool down, and when the temperature in the kettle reaches 48°C, the reaction solution is directly put into the alkali-adding kettle. When the caustic for adding alkali is turned on to freeze and cool to 28°C, start ...

Embodiment 3

[0042] (a) synthesis step: the charging capacity of raw material is as follows:

[0043] Epichlorohydrin 1387KG

[0044] Water 60KG

[0045] Cyanuric acid 154.2KG

[0046] Tetramethylammonium chloride 6KG

[0047] Benzyltrimethylammonium chloride 3.1KG

[0048]Caustic soda 145.3KG

[0049] Turn on the feeding pump, put the epichlorohydrin into the high-level tank, put it into the reaction kettle, and start stirring; put cyanuric acid, water and catalyst into the reaction kettle in sequence. After feeding the material, turn on the steam to raise the temperature, the temperature in the kettle is 75°C, reflux for 13 minutes, continue to raise the temperature by 90°C, reflux and divide the water, and the water separation temperature is 104°C. After water separation, cool down, and when the temperature in the kettle reaches 48°C, the reaction solution is directly put into the alkali-adding kettle. When the caustic for adding alkali is turned on to freeze and cool to 28°C, sta...

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Abstract

The invention relates to a production method of a powder coating curing agent, in particular to a production method of triglycidyl isocyanurate, belonging to the technical field of chemical production. The invention uses two kinds of catalysts, which effectively controls the occurrence of side reactions and greatly improves the product yield and quality; during distillation, the distillation temperature is reduced by increasing the vacuum degree, and the synthetic material is subjected to low-temperature cooling treatment to recover raw materials Epichlorohydrin reduces raw material consumption from 1.55 tons per ton to 1.3 tons. Overcoming the shortcomings of the old process, through mass production experiments, it is concluded that the process conditions are mature and feasible, the conversion rate is high, the product quality is stable, the finished product rate is over 80%, and the consumption of raw materials is small, so it has a broad market prospect.

Description

technical field [0001] The invention relates to a production method of a powder coating curing agent, in particular to a production method of triglycidyl isocyanurate, belonging to the technical field of chemical production. Background technique [0002] Triglycidyl isocyanurate, referred to as: TGIC, is an important powder coating curing agent, mainly used as a curing agent for polyester powder coatings, and can also be used to manufacture electrical insulation materials, laminates, printed circuits, various tools, adhesives, plastic stabilizers, etc. At present, the research on the production process of triglycidyl isocyanurate is mainly to discuss the influence of raw material ratio, catalyst type and dosage, and different processes on the product yield. Generally, a two-step synthesis is adopted under the condition of a special catalyst. Although the production rate has been improved, the consumption of raw materials is large and the side reactions are many, which is no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D405/14C09D167/00C09D5/03
Inventor 王方大王立成徐建平蒋剑峰陈凯
Owner CHANGZHOU NIUTANG CHEM PLANT CO LTD
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