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Process for preparing triglycidyl isocyanurate

A technology of oxypropyl isocyanurate and its production method, which is applied in polyester coatings, coatings, organic chemistry, etc., can solve the problems of high raw material consumption, unsuitability to market demand, and many side reactions, and meet the technological conditions The effects of maturity, stable product quality, and less raw material consumption

Inactive Publication Date: 2009-02-18
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 materials, turn on the steam to raise the temperature, the temperature in the kettle is 75°C, reflux for 13 minutes, continue to heat up to 90°C, reflux to separate 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 alkali, and 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 materials, turn on the steam to raise the temperature, the temperature in the kettle is 75°C, reflux for 13 minutes, continue to heat up to 90°C, reflux to separate 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 alkali, and add alkali...

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 materials, turn on the steam to raise the temperature, the temperature in the kettle is 75°C, reflux for 13 minutes, continue to heat up to 90°C, reflux to separate 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 alkali, and add alk...

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Abstract

The present invention relates to a production method of powder coating firming agent, in particular to a production method of tris (2, 3-epoxy propyl) isocyanurate, and belongs to the technical field of chemical production. Two catalysts used in the production method effectively control the side reaction, thereby greatly improving the yield rate and quality of the product; when the distillation is performed, the vacuum degree can be increased to reduce the distillation temperature so as to process the synthesized materials at the low temperature, the raw material epichlorohydrin can be reclaimed, the consumption of the raw material is reduced from original 1.55 tons to 1.3 tons. The present invention overcomes the defects in the old technology. The experiments on batch production prove that the process conditions are mature and feasible, the conversion is high, the quality of the product is stable, the yield is above 80 percent, the consumption of raw materials is less, and the present invention has broad market prospects.

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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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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