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Preparation method of polyphenylsulfone resin

The technology of polyphenylsulfone and resin is applied in the field of preparation of polyphenylsulfone resin, which can solve the problems of complicated polyphenylsulfone resin polymerization process and high product cost, and achieve the effects of preventing oxidation, improving product performance and improving product quality.

Inactive Publication Date: 2019-04-26
重庆晟淦新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing polyphenylsulfone resin polymerization process is cumbersome, and a large amount of dehydrating agent is used in the process. For example, in the Chinese patent CN105601926A, the dehydrating agent is one or both of xylene or trimethylbenzene, and the final product cost is relatively high.

Method used

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Examples

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preparation example Construction

[0019] The invention provides a kind of preparation method of polyphenylsulfone resin, comprises the following steps:

[0020] The aromatic dihydroxy compound, the bis-(halogenated aryl) sulfone compound, the catalyst and the organic solvent are mixed and dehydrated by blowing off with a protective gas to obtain a dehydrated product;

[0021] The dehydrated product is subjected to a polymerization reaction to obtain a polyphenylsulfone resin; the polymerization reaction is a gradient temperature rise process, the temperature at which the polymerization reaction begins to heat up is 90-120°C, and the final temperature of the polymerization reaction is 250-270°C , the time of the polymerization reaction is 5-8 hours, the heating rate of each gradient heating is independently 1-3°C / min, the temperature difference of each gradient heating is independently 15-30°C, and each gradient heating reaches the end of the heating The last holding time is independently 0.5-1h.

[0022] The ...

Embodiment 1

[0037] (1) Under nitrogen protection, add 1 weight part of 4,4'-difluorodiphenyl sulfone and 1 weight part of biphenol into 300 weight parts of N-methylpyrrolidone, and stir evenly. After complete dissolution, 0.3 parts by weight of catalyst lithium formate is added for preliminary dehydration, and after dehydration, the next stage of polymerization reaction is carried out, and nitrogen gas is used to take away moisture during the dehydration process.

[0038] (2) Polymerization is carried out by temperature control and temperature rise several times under stirring conditions, and the polymer product is finally obtained. The polymer product is discharged in cold water, and then crushed and cut. The obtained product with uniform particles is desalinated and washed with an alcohol solvent. Then use pure water to remove the alcohol solvent in the product, and finally the product is vacuum dried at 90°C for 17 hours.

[0039] Polymerization adopts a pressurized method, each holdin...

Embodiment 2

[0041](1) Under the protection of argon, 1 weight part of 4,4'-difluorodiphenyl sulfone and 3 weight parts of biphenol were added to 700 weight parts of N-methylpyrrolidone, and stirred evenly. After complete dissolution, 0.9 parts by weight of catalyst lithium formate is added for preliminary dehydration, and after the dehydration is completed, the next stage of polymerization reaction is carried out, and argon gas is used to take away moisture during the dehydration process.

[0042] (2) Polymerization is carried out by temperature control and temperature rise several times under stirring conditions, and finally a polymerized product is obtained, and the polymerized product is discharged in cold water, and then crushed and cut, and the obtained product with uniform particles is desalinated and washed with an alcohol solvent, Then use pure water to remove the alcohol solvent in the product, and finally the product is vacuum dried at 150°C for 7 hours.

[0043] Polymerization ...

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Abstract

The invention provides a preparation method of polyphenylsulfone resin and belongs to the technical field of synthesis of organic macromolecular materials. Polymerization reaction is conducted withoutadopting a dehydrating agent scheme is not adopted, so that the reaction rate is increased, protective gas is recycled, loss is reduced and the production cost is further reduced; furthermore, the protective gas is blown off in the dehydration process, superfluous water in a reaction system is removed, the protective gas nearly does not take away a catalyst in the protective gas blowoff process,and the active molecules of the catalyst are not reduced and still maintain efficient catalytic performance, so that the reaction rate is increased, the use amount of the catalyst can be reduced and the production cost is further reduced.

Description

technical field [0001] The invention relates to the technical field of polymer material synthesis, in particular to a preparation method of polyphenylsulfone resin. Background technique [0002] The existing polyphenylsulfone resin polymerization process is cumbersome, and a large amount of dehydrating agent is used in the process. For example, in Chinese patent CN105601926A, the dehydrating agent is one or two of xylene or mesitylene, and the cost of the final product is relatively high. Contents of the invention [0003] In view of this, the object of the present invention is to provide a kind of preparation method of polyphenylsulfone resin. The preparation method provided by the invention utilizes protective gas for dehydration, does not use a dehydrating agent, and reduces production costs. [0004] In order to achieve the above-mentioned purpose of the invention, the present invention provides the following technical solutions: [0005] A preparation method of poly...

Claims

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Application Information

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IPC IPC(8): C08G75/20
CPCC08G75/20
Inventor 陈培龙何敏李振中王园淦胡松华胡唯一余拥黄蜂胡泽王强
Owner 重庆晟淦新材料科技有限公司
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