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Polyarylether carbonitrile industrial production method

A technology of polyarylether nitrile and production method, which is applied in the field of polyarylether nitrile synthesis, can solve the problems of insufficient product quantity and high product price, and achieve uniform stability of purity and performance, increase of molecular weight, and production process easy to control effects

Inactive Publication Date: 2006-07-26
YANGZHOU TIANCHEN FINE CHEM
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, only a few companies such as DuPont in the United States can produce polyarylether nitrile and its products in the world, resulting in high product prices and insufficient product volume.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] 1. Preparation:

[0017] 500 kg of 2,6-dichlorobenzonitrile

[0018] Polyphenols (such as resorcinol or hydroquinone or phenolphthalein or catechol) 200-500 kg

[0019] Anhydrous potassium carbonate (catalyst) 5-50 kg

[0020] Solvent NMP 100~800 kg

[0021] Toluene 10-200 kg

[0022] 2. Prepare the reactor:

[0023] The bottom of the sealed reactor is connected to the water separator through a valve, and the steam discharge pipe is connected to the top of the reactor through a valve.

[0024] 3. Production process:

[0025] 1. Put the above raw materials into the reaction kettle and stir evenly.

[0026] 2. Control the pressure in the reactor to 2.0-2.5MPa, raise the temperature of the reactor to 100-200°C, keep it warm for 2-6 hours, and carry out the dehydration reflux reaction, the generated water is discharged from the bottom of the water separator, and then the temperature in the reactor Raise it to 150-300°C and keep it warm for 1-6 hours. During this peri...

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Abstract

The industrial process of polyarylethernitrile, this invention relates to the Synthesis of polyarylethernitrile. Adding 2, 6-dichlorocyanobenzene, polyhydric phenol, anhydrous potassium carbonate, solvent NMPA, toluene in autoclave, heating-up the autoclave to 100-200 deg C in the condition of 2. 0-2. 5MPa in autoclave, heating-up the autoclave to 150-300deg C after 2-6h heat preservation, taking out the fixed object of autoclave after 1-6h heat preservation, getting the polyarylethernitrile after washing by boiling-water, desiccation and granulation. The production condition of this invention is easy to realize, the industrial process is easy to control, and the produced polyarylethernitrile is low in cost and suit to use of multirealm.

Description

technical field [0001] The invention relates to a synthesis method of polyarylether nitrile. Background technique [0002] Polyarylene ether nitrile is a thermoplastic polymer material with excellent comprehensive properties. It has excellent heat resistance, physical and mechanical properties, insulation properties, etc., especially in the environment of continuous use at high temperatures and temperature environment changes. The performance is stable, and the flame retardant level can reach VO level and other outstanding advantages. In the military, it is used in the manufacture of electronic weapons, electronic guns, ballistic missiles, and particle accelerators; in mechanical manufacturing, auto parts and laser systems are widely used; in aerospace, satellite manufacturing and space technology development are also indispensable materials . At present, only a few companies such as DuPont of the United States can produce polyarylene ether nitrile and its products in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/40
Inventor 陈国云刘孝波刘润兴
Owner YANGZHOU TIANCHEN FINE CHEM
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