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Industrial production method of semi-crystalline poly aryl ether nitrile

A polyarylene ether ether nitrile technology and a production method are applied in the field of polymer materials, can solve the problems of low modulus, strength and heat resistance, high price, etc., achieve easy realization of production conditions, low cost, and reduce competitive side reactions Effect

Active Publication Date: 2009-04-29
SICHUAN FEIYA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the 1970s, researchers in the United States, Japan and other countries have all carried out synthetic improvements to polyarylether polymers, but only a few companies such as DuPont in the United States and ICI in the United Kingdom can produce polyarylether polymers. , such as PEEK, so the price is very expensive
The amorphous polymer has the disadvantages of low modulus, strength and heat resistance, its tensile strength can only reach about 90MPa, and its modulus is between 1500-2000MPa

Method used

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  • Industrial production method of semi-crystalline poly aryl ether nitrile
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  • Industrial production method of semi-crystalline poly aryl ether nitrile

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1 Preparation of semi-crystalline polyarylether ether nitrile of the present invention

[0026] (1) Preparation of materials:

[0027] 2,6-dichlorobenzonitrile 412.8 kg

[0028] Hydroquinone 264 kg

[0029] Anhydrous potassium carbonate (catalyst) 396 kg

[0030] Solvent NMP 748 kg

[0031] Toluene 60 kg

[0032] (2) Prepare the reactor:

[0033] The top of the sealed reaction kettle is connected to the water distributor through a valve, and the steam discharge pipe is connected to the top of the reaction kettle through a valve.

[0034] (3) Production process:

[0035] 1. Put the above-mentioned raw materials into the reaction kettle in order, and stir evenly.

[0036] 2. Heat the reactor to 160°C under normal pressure, keep it warm for 2 hours, and carry out dehydration and reflux reaction. The generated water is directly discharged from the water separator to the waste water storage tank, and the toluene is separated from the water separator and sen...

Embodiment 2

[0048] Example 2 Preparation of semi-crystalline polyarylether ether nitrile of the present invention

[0049] (1) Preparation of materials:

[0050] 2,6-dichlorobenzonitrile 329.6 kg

[0051] Hydroquinone 211 kg

[0052] Anhydrous potassium carbonate (catalyst) 316.8 kg

[0053] Solvent NMP 565 kg

[0054] Toluene 50 kg

[0055] (2) Prepare the reactor:

[0056] The top of the sealed reaction kettle is connected to the water distributor through a valve, and the steam discharge pipe is connected to the top of the reaction kettle through a valve.

[0057] (3) Production process:

[0058] 1. Put the above-mentioned raw materials into the reaction kettle in order, and stir evenly.

[0059] 2. Heat the reactor to 150°C under normal pressure, keep it warm for 3 hours, and carry out dehydration and reflux reaction. The generated water is directly discharged from the water separator to the waste water storage tank, and the toluene is separated from the water separator and sent t...

Embodiment 3

[0069] Example 3 Preparation of semi-crystalline polyarylether ether nitrile of the present invention

[0070] (1) Preparation of materials:

[0071] 2,6-dichlorobenzonitrile 329.6 kg

[0072] Hydroquinone 211 kg

[0073] Anhydrous potassium carbonate (catalyst) 316.8 kg

[0074] Solvent NMP 565 kg

[0075] Toluene 50 kg

[0076] (2) Prepare the reactor:

[0077] The top of the sealed reaction kettle is connected to the water distributor through a valve, and the steam discharge pipe is connected to the top of the reaction kettle through a valve.

[0078] (3) Production process:

[0079] 1. Put the above-mentioned raw materials into the reaction kettle in order, and stir evenly.

[0080] 2. Heat the reactor to 140°C under normal pressure, keep it warm for 5 hours, and carry out dehydration and reflux reaction. The generated water is directly discharged from the water separator to the waste water storage tank, and the toluene is separated from the water separator and sent...

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Abstract

The invention relates to an industrial production method for semi-crystal poly(aromatic ether nitrile), which belongs to the field of polymer material. The method comprises the following steps: 2, 6-dichloro benzonitrile and hydroquinone are taken as raw materials; anhydrous potassium carbonate is taken as a catalyst; in the presence of a solvent and a dehydrating agent, the raw materials and the catalyst react under atmospheric pressure to obtain the poly(aromatic ether nitrile) homopolymer with low molecular weight and regular chain segments; and then the molecular weight of polymer is increased through pressurization, so as to obtain the semi-crystal poly(aromatic ether nitrile) polymer with high molecular weight. Due to the increase of crystallinity and molecular weight, the mechanical properties and heat resistance of the semi-crystal poly(aromatic ether nitrile) polymer are obviously improved.

Description

technical field [0001] The invention relates to an industrial production method of semi-crystalline polyarylether ether nitrile, which belongs to the field of polymer materials. Background technique [0002] Polyarylene ether ether nitriles (PEEN) is a kind of polymer with a special molecular structure. Due to the introduction of a strong polar cyano group (-CN), the dipole-dipole interaction between molecular chains is enhanced. High heat resistance, mechanical strength, insulation performance, etc. can be obtained; at the same time, because the cyano group appears as a side group, it has little effect on the molding and processing properties of the polymer, especially in environments with continuous use at high temperatures and temperature changes It can still maintain stable performance, and at the same time, the flame retardant level can reach VO level and other outstanding features. In the military, it is used in the manufacture of electronic weapons, electronic guns, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/40
Inventor 余兴江刘孝波任伟李岳山钟家春左芳
Owner SICHUAN FEIYA NEW MATERIAL
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