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A kind of method for preparing high molecular weight polyarylene sulfide sulfone

A polyarylene sulfide sulfone, high molecular weight technology, applied in the field of new high-performance thermoplastic resins, can solve the problems of not very prominent catalytic ability, difficult to obtain high molecular weight polyarylene sulfide, etc., to achieve good effect and uniform product particles. Effect

Active Publication Date: 2021-12-17
ZHUHAI CHANGXIAN CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst used in this technical solution is at least one of sodium acetate, lithium acetate, lithium chloride, sodium benzenesulfonate, sodium phosphate and sodium carbonate, the catalytic ability is not very prominent, it is difficult to obtain high molecular weight polyarylene sulfide ether sulfone

Method used

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  • A kind of method for preparing high molecular weight polyarylene sulfide sulfone

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Based on 4,4'-dichlorodiphenyl sulfone, 4,4'-dichlorodiphenyl sulfone 100kg, sodium sulfide pentahydrate 100kg, sodium hydroxide 50kg, catalyst 5% n-butyllithium benzene solution 50kg: 2 , 7kg of 5-dichloronitrobenzene, the addition of N-methylpyrrolidone in the step (1) and the mass ratio of the total mass of the reaction components are calculated by 4 times, that is, the quality of solvent N-methylpyrrolidone is 848.2 kg. In the third step, add 10kg of N-methylpyrrolidone to dissolve 7kg of 2,5-dichloronitrobenzene and 5kg of catalyst

[0024] (1) Pre-polymerization: First add the weighed N-methylpyrrolidone into the dehydration kettle, start stirring, and then add 3 / 4 of sodium sulfide pentahydrate, sodium hydroxide, and 4,4'-dichloro Diphenyl sulfone is put into the dehydration kettle, and nitrogen protection is introduced; the temperature of the system is raised to 200°C, and sodium sulfide pentahydrate is dehydrated; during the dehydration process, sodium sulfide...

Embodiment 2

[0030] The difference between this example and Example 1 is that the ratio of the catalyst is different. The ratio of the benzene solution of 5% n-butyllithium in the catalyst of Example 1 to 4,4'-dichlorodiphenyl sulfone is 1:0.5. An example is 1:0.05.

[0031] Based on 4,4'-dichlorodiphenylsulfone, 100kg of 4,4'-dichlorodiphenylsulfone, 100kg of sodium sulfide pentahydrate, 50kg of sodium hydroxide, 0.5kg of benzene solution of 5% n-butyllithium catalyst, : 2,5-dichloronitrobenzene 7kg, the mass ratio of the addition of N-methylpyrrolidone in the step (1) to the total mass of the reaction components is calculated by 4 times, that is, the solvent N-methylpyrrolidone quality It is 848.2kg. In the third step, add 10kg of N-methylpyrrolidone to dissolve 7kg of 2,5-dichloronitrobenzene and 5kg of catalyst

[0032] (1) Pre-polymerization: First add the weighed N-methylpyrrolidone into the dehydration kettle, start stirring, and then add 3 / 4 of sodium sulfide pentahydrate, sodium...

Embodiment 3

[0038] The difference between this example and Example 1 is that the ratio of the catalyst is different. The ratio of the benzene solution of 5% n-butyllithium in the catalyst of Example 1 to 4,4'-dichlorodiphenyl sulfone is 1:0.5. An example is 1:0.1.

[0039] Based on 4,4'-dichlorodiphenylsulfone, 100kg of 4,4'-dichlorodiphenylsulfone, 100kg of sodium sulfide pentahydrate, 50kg of sodium hydroxide, 10kg of benzene solution of 5% n-butyllithium catalyst,: 2,5-dichloronitrobenzene 7kg, the addition of N-methylpyrrolidone in the step (1) is calculated as 4 times the mass ratio of the total mass of the reaction components, that is, the solvent N-methylpyrrolidone quality is 848.2kg. In the third step, add 10kg of N-methylpyrrolidone to dissolve 7kg of 2,5-dichloronitrobenzene and 5kg of catalyst

[0040] (1) Pre-polymerization: First add the weighed N-methylpyrrolidone into the dehydration kettle, start stirring, and then add 3 / 4 of sodium sulfide pentahydrate, sodium hydroxid...

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Abstract

The invention relates to a method for preparing high-molecular weight polyarylene sulfide sulfone, which uses sodium sulfide and 4,4'-dichlorodiphenyl sulfone as raw materials, sodium hydroxide as an auxiliary agent, and N-methylpyrrolidone as a solvent , using the third monomer 2,5-dichloronitrobenzene as a chain extender, and increasing the molecular weight by adding catalyst n-butyllithium. The catalyst of the present invention has strong catalytic performance, the obtained polyarylene sulfide sulfone has a high molecular weight, and the product quality is relatively stable. The polyarylene sulfide sulfone resin is subjected to precipitation treatment with a mixed solution of water and polyethylene glycol, and the effect is good, and the product particles are uniform. .

Description

technical field [0001] The invention belongs to the field of novel high-performance thermoplastic resins, and in particular relates to a method for preparing high molecular weight polyarylene sulfide sulfone. Background technique [0002] Polyarylene sulfide sulfone (PASS) is a special engineering plastic with excellent comprehensive performance. It not only maintains the excellent heat resistance, corrosion resistance and excellent mechanical properties of the special engineering plastic polyphenylene sulfide, but also has With the aryl sulfone structure, this polymer has better impact resistance, bending resistance, insulation and high temperature mechanical properties and radiation resistance than polyphenylene sulfide, excellent processability and richer processing methods, and more extensive market, higher cost performance. Polyarylene sulfide sulfone is prepared into various corrosion-resistant separation membranes with excellent performance, which is suitable for the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G75/20C08G75/0254C08G75/0281
CPCC08G75/20C08G75/0254C08G75/0281
Inventor 张德明
Owner ZHUHAI CHANGXIAN CHEM TECH