Preparation method of high-purity polyether-ether-ketone resin

A polyether ether ketone resin, high-purity technology, applied in the field of preparation of high-purity polyether ether ketone resin, can solve the problems of reduced molecular collision probability, high impurity content in products, and difficulty in crushing and sieving, so as to achieve easy control of the production process, The effect of improving product quality and reducing production costs

Inactive Publication Date: 2018-01-12
YIBIN TIANYUAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology solves problems associated with making polyether ketones (PEKS). Compared to other methods involving reacting nitrogen monoxide gas or ammonia, this new approach involves combining two chemical substances called carbon dioxide/nitric oxynitrite instead of oxygen into one compound that makes up the main part of the polymers produced from these starting materials. By adjusting specific parameters like temperature and pressure during synthesis, different types of plastic material may be made without affecting their properties such as strength or elongity. Additionally, when adding sodium bicarbonate to produce a special type of plasma spun fiber used in filters, there will also decrease unwanted elements introduced due to high temperatures involved while still maintaining good performance characteristics.

Problems solved by technology

This patented technical problem addressed in this patents relates to improper removal of certain materials from poly(aryl ethersulfonamide), specifically calcium oxalate, during production processes that involve melting polysiloxane together with another compound called bis(2-methyltriazoanaphthalenebisforming acid). These contaminant metals may cause defects like cracks when exposed to extreme temperatures over time. To solve these issues, various methods have been developed including dry cleaning techniques, ion exchange resin columns, liquid phase extraction, solid state redox chemistry, etc., each having their own advantages and disadvantages.

Method used

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  • Preparation method of high-purity polyether-ether-ketone resin

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Experimental program
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Effect test

Embodiment 1

[0013] First vacuumize the reactor equipped with a mechanical stirrer, reflux condenser and thermometer, and then introduce high-purity nitrogen (purity ≥ 99.9995%). After repeating three times, the oxygen in the system is completely replaced by nitrogen, and the temperature is maintained at 2m 3 / h nitrogen flow to prevent air from entering, add 654g diphenyl sulfone, heat until it is completely dissolved, add 218g 4,4'-difluorobenzophenone, stir to dissolve, add 110g hydroquinone, stir to make it Dissolved, Na in advance 2 CO 3 and K 2 CO 3 The powder is dried, crushed and sieved, and accurately weighed 105g Na 2 CO 3 and 1.4g K 2 CO 3 , immediately added to the reaction system, stirred at 170°C for 30 minutes to form a salt with hydroquinone and dissolved, and quickly raised the temperature of the system to 190°C, after 1 hour of reaction, the temperature of the system was raised within 15 minutes At the same time, increase the stirring speed, stop heating after 5 ho...

Embodiment 2

[0015] First vacuumize the reactor equipped with a mechanical stirrer, reflux condenser and thermometer, and then introduce high-purity nitrogen (purity ≥ 99.9995%). After repeating three times, the oxygen in the system is completely replaced by nitrogen, and the temperature is maintained at 2m 3 / h nitrogen flow to prevent oxygen from entering, add 654g diphenyl sulfone, heat until it dissolves, add 218g 4,4'-difluorobenzophenone, stir to dissolve, add 110g hydroquinone, stir to dissolve , Na in advance 2 CO 3 and K 2 CO 3 Powder drying, crushing and sieving, accurate weighing of 96gNa 2 CO 3 and 12.5g K 2 CO 3 , immediately added to the reaction system, stirred at 170°C for 30 minutes to form a salt with hydroquinone and dissolved, and quickly raised the temperature of the system to 190°C, after 1 hour of reaction, the temperature of the system was raised within 15 minutes At the same time, increase the stirring speed, stop heating after 5 hours of reaction, and immed...

Embodiment 3

[0017] First vacuumize the reactor equipped with a mechanical stirrer, reflux condenser and thermometer, and then introduce high-purity nitrogen (purity ≥ 99.9995%). After repeating three times, the oxygen in the system is completely replaced by nitrogen, and the temperature is maintained at 2m 3 / h nitrogen flow to prevent oxygen from entering, add 654g diphenyl sulfone, heat until it dissolves, add 218g 4,4'-difluorobenzophenone, stir to dissolve, add 110g hydroquinone, stir to dissolve , Na in advance 2 CO 3 and K 2 CO 3 The powder is dried, crushed and sieved, and accurately weighed 100g Na 2 CO 3 and 5g K 2 CO 3 , immediately added to the reaction system, stirred at 170°C for 30 minutes to form a salt with hydroquinone and dissolved, and quickly raised the temperature of the system to 190°C, after 1 hour of reaction, the temperature of the system was raised within 15 minutes Increase the stirring speed to 315°C at the same time, stop heating after 5 hours of reactio...

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Abstract

The invention relates to a preparation method of a high-purity polyether-ether-ketone (PEEK) resin. The preparation method is characterized in that a K2CO3/Na2CO3 composite catalyst taking Na2CO3 as amain body is adopted, diphenyl sulfone is taken as a solvent, and two monomers of 4,4-difluorobenzophenone and hydroquinone are subjected to a polymerization reaction to prepare a high-purity polyether-ether-ketone product. The method solves the problems that a polyether-ether-ketone resin prepared from K2CO3 as a main body is hig in water-absorbing quality and is difficult to pulverize and screen, and the distribution of the molecular weight is relatively wide.

Description

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Claims

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Application Information

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Owner YIBIN TIANYUAN GRP CO LTD
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