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High-liquidity poly(ether sulfone ketone) (PESK) resin and industrial production process thereof

A polyethersulfone ketone and high-fluidity technology, which is applied to the high-fluidity polyethersulfone ketone resin PESK and its industrialized production process field, can solve the problems of increased resin production cost, low polyarylethersulfone production capacity, and unstable sulfolane. , to achieve the effect of increasing production capacity, saving procurement costs, and maximizing production capacity

Active Publication Date: 2014-03-12
JIANGMEN YOUJU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of process has the following defects: (1) The production capacity of polyaryl ether sulfone is low under the same equipment conditions; (2) Due to the instability of sulfolane at high temperature, the recovery rate of sulfolane in the whole process is only about 80% , that is to say, 600.00KG sulfolane will be lost for every ton of polyarylethersulfone produced, which will increase the production cost of resin
[0007] If the solid content of the polymerization system is directly increased, such as the solid content of the designed system is in the range of 30 to 40%, we find that the reaction speed in the sulfolane system does not increase with the increase of the concentration, but decreases with the increase of the concentration. When the content is 30 ~ 35%, the reaction speed will drop by nearly half, which will increase the production cost

Method used

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  • High-liquidity poly(ether sulfone ketone) (PESK) resin and industrial production process thereof
  • High-liquidity poly(ether sulfone ketone) (PESK) resin and industrial production process thereof
  • High-liquidity poly(ether sulfone ketone) (PESK) resin and industrial production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In a 300-liter stainless steel reaction kettle equipped with a nitrogen pipe, a condensing separator and a high-efficiency stirrer, first add 75.00 KG sulfolane and then start stirring to raise the temperature to 80°C, and then add 27.90 KG 4,4'-dichlorodiphenyl Sulfone, 2.5KG 4,4'-difluorobenzophenone, 26.00 KG 4,4'-dihydroxydiphenylsulfone, after the monomers are completely dissolved, add 13.00 KG sodium carbonate to the system when the temperature rises to 100°C , and then add 60 liters of trimethylbenzene, continue to stir and heat up to 200 ° C, the salt-forming reaction begins, the water generated in the system and trimethylbenzene azeotrope, cooling water begins to drip from the condenser tube, and the layers are separated in the water separator. The trimethylbenzene in the upper layer changes from turbid to clear and then continues to reflux for 20 minutes to ensure that the salt-forming reaction is complete. The salt-forming stage is about 1 hour, and the solid ...

Embodiment 2

[0048] Same as Example 1, except that the amount of sulfolane is 70.0 KG, 65.0 liters of p-diethylbenzene, 26.5KG 4,4'-dichlorodiphenyl sulfone, and the amount of 4,4'-difluorobenzophenone is 3.75KG, the polymerization The solid content of the system in the reaction stage is 40%, and other conditions are the same.

[0049] The resulting PESK resin melt index MI =30.0 g / 10min (350.0°C, 5KG);

[0050] Melting point: 316°C.

Embodiment 3

[0052] Same as Example 1, except that the amount of sulfolane is 80.0 KG, 55.0 liters of tetramethylbenzene, 25.0 KG of 4,4'-dichlorodiphenyl sulfone, and the amount of 4,4'-difluorobenzophenone is 5.0 KG, the polymerization stage The solid content of the system is 38%, and other conditions are the same.

[0053] The resulting PESK resin melt index MI = 15.8 g / 10min (350.0°C, 5KG);

[0054] Melting point: 318°C.

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Abstract

The invention discloses high-liquidity poly(ether sulfone ketone) (PESK) resin. Aromatic ketone monomers are introduced into a poly(ether sulfone) (PES) polymer, and particularly heterogeneous aromatic ketone monomers are copolymerized; and the main chain of the obtained polymer molecule contains an irregular copolymer structure of polyarylether sulfone and polyaryletherketone, wherein the molar ratio of the groups is (5-9):1. An industrial production process of the high-liquidity PESK resin consists of a salifying stage and a polymerization stage, wherein the solid content of the system in the salifying stage is 20-25%; and the solid content in the polymerization stage is 35-45%. By adopting the process provided by the invention, the processing forming temperature of the obtained polymer is generally not higher than 350 DEG C, the polymer has relatively high liquidity and is easy to process; and moreover, the solvent resistance is excellent, and the application fields of the product are widened.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-fluidity polyether sulfone ketone resin PESK and an industrialized production process thereof. Background technique [0002] Polyaryl ether sulfone is a kind of high-performance engineering plastics, because of their excellent comprehensive properties such as heat resistance, hot water resistance, creep resistance, dimensional stability, impact resistance, chemical resistance, non-toxicity, flame retardancy, etc. Therefore, it has been widely used in the fields of electronics, electrical appliances, machinery, automobiles, medical appliances, food processing and non-stick coatings for a long time. [0003] Industrially important polyarylethersulfones include polyethersulfone (PES) and biphenyl polyethersulfone (PPSU), both of which have high glass transition temperatures (~220 °C). In the process of use, due to the high melt viscosity of polyarylethe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/40C08G65/46
Inventor 王贤文
Owner JIANGMEN YOUJU NEW MATERIALS
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