TGIC (Triglycidyl Isocyanurate) production method based on fused steel belt granulation

A production method and product technology, applied in the field of TGIC production and processing, can solve the problems of reduced yield, intensified side reactions, and easy volatilization of methanol, and achieve high recovery and utilization, improved quality and yield, and uniform feeding speed Effect

Active Publication Date: 2018-07-20
HUANGSHAN JINFENG INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First of all, in the current production process, the addition of solid alkali to the cyclization kettle is basically manual operation. When feeding, the epichlorohydrin in the reaction kettle is volatilized, and the pungent smell is heavy, which is extremely harmful to the health of workers.
In addition, manual feeding has a large amount of solid raw materials in a single feeding. In a short period of time, the stirring is uneven, and "explosion polymerization" is prone to occur, the side reactions are intensified, and the yield is reduced. Moreover, the control of the reaction temperature is all manual operation, and the temperature fluctuation range is large, which affects the pro

Method used

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  • TGIC (Triglycidyl Isocyanurate) production method based on fused steel belt granulation
  • TGIC (Triglycidyl Isocyanurate) production method based on fused steel belt granulation
  • TGIC (Triglycidyl Isocyanurate) production method based on fused steel belt granulation

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0050] Example 1: Measurement of the effect of cyclization kettle device B

[0051] 1. Production of TGIC (experimental group)

[0052] (1) Synthesis reaction: Add ECH, CA and tetramethylammonium chloride into synthesis kettle device A at a mass ratio of 7:1:0.03. The synthesis kettle jacket A1 is heated to 80℃ with steam, and the synthesis reaction is carried out under normal pressure. The reaction is carried out for 5 hours until the mixed solution becomes clear and transparent. The intermediate product: 1,3,5-tris(1'-chloro-2) '-Hydroxy-propyl) isocyanurate.

[0053] (2) Cyclization reaction: add the above intermediate product into the cyclization kettle device B, add solid alkali (99% NaOH), and take the weight of CA added as 1 and the added weight of solid alkali as 1. The cyclization reaction is carried out under the condition of 30±5℃, and the reaction time is 1.5h. For the specific cyclization reaction operation, refer to Step 2 above for the cyclization reaction.

[0054] ...

Example Embodiment

[0068] Example two

[0069] 1. Production of TGIC particles

[0070] (1) Synthesis reaction: Add ECH, CA and tetramethylammonium chloride into synthesis kettle device A at a mass ratio of 4:1:0.01. The synthesis kettle jacket A1 is heated to 80℃ with steam, and the synthesis reaction is carried out under normal pressure. The reaction is carried out for 5 hours until the mixed solution becomes clear and transparent. The intermediate product: 1,3,5-tris(1'-chloro-2) '-Hydroxy-propyl) isocyanurate.

[0071] (2) Cyclization reaction: add the above-mentioned intermediate product into the cyclization kettle device B, and add solid alkali (99% NaOH), taking the weight of CA added as 1 and the added weight of solid alkali as 0.9. The cyclization reaction is carried out under the condition of 30±5℃, and the reaction time is 1.5h.

[0072] (3) Initial separation: pass the TGIC mixture produced in step 2 into the filter press device C for filtration, and send the filtered liquid phase to the l...

Example Embodiment

[0084] Example three

[0085] 1. Production of TGIC particles

[0086] (1) Synthesis reaction: Add ECH, CA and tetramethylammonium chloride into synthesis kettle device A at a mass ratio of 7:1:0.03. The synthesis kettle jacket A1 is heated to 80℃ with steam, and the synthesis reaction is carried out under normal pressure. The reaction is carried out for 5 hours until the mixed solution becomes clear and transparent. The intermediate product: 1,3,5-tris(1'-chloro-2) '-Hydroxy-propyl) isocyanurate.

[0087] (2) Cyclization reaction: add the above intermediate product into the cyclization kettle device B, add solid alkali (99% NaOH), and take the weight of CA added as 1 and the added weight of solid alkali as 1. The cyclization reaction is carried out under the condition of 30±5℃, and the reaction time is 1.5h.

[0088] (3) Initial separation: pass the TGIC mixture produced in step 2 into the filter press device C for filtration, and send the filtered liquid phase to the layerer devic...

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Abstract

The invention belongs to the field of production and processing of TGIC, and in particular relates to a TGIC (Triglycidyl Isocyanurate) production method based on fused steel belt granulation. The TGIC production method comprises the specific steps: adding epichlorohydrin, cyanuric acid and a tetramethylammonium chloride catalyst into a reaction container; heating and carrying out synthetic reaction under normal pressure obtain an intermediate product; then adding solid alkali and carrying out cyclization reaction; filtering, standing and layering a cyclization reaction product; heating an organic phase of a lower layer and carrying out depressurization and distillation; crystallizing and centrifuging a distilled material to obtain a TGIC crystal containing volatile organic compounds; putting the TGIC crystal containing the volatile organic compounds into a vacuum environment and heating to obtain fused-state TGIC; dropping the fused-state TGIC on a pre-cooled steel belt granulation machine, and rapidly cooling the TGIC to from TGIC grains which have a firm texture and does not easily generate dust. The method provided by the invention is simple, and achieves a high byproduct repeated utilization rate and a high recycling rate; the prepared TGIC grains have the firm texture and a smooth surface, and are convenient to use.

Description

technical field [0001] The invention belongs to the field of TGIC production and processing, and in particular relates to a TGIC production method based on molten steel strip granulation. Background technique [0002] TGIC (triglycidyl isocyanurate, or: triglycidyl isocyanurate) is a curing agent used in powder coatings, due to its good thermal stability, good weather resistance, yellowing resistance Excellent, excellent mechanical properties and widely used. In the 1990s, the developed region of the Yangtze River Delta introduced TGIC water washing production technology from abroad. After ten years of development, the production and application of epoxy resin series products TGIC in my country have developed rapidly. However, with the development of the epoxy resin industry, in recent years, a large number of "three wastes" have been discharged in the production of TGIC, which has caused serious environmental pollution and brought enormous pressure to occupational health a...

Claims

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Application Information

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IPC IPC(8): C07D405/14
CPCC07D405/14
Inventor 洪昭雷吴锡成王建坤
Owner HUANGSHAN JINFENG INDAL
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