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Method for preparing high molecular weight polyaryletherketone

A polyaryletherketone, high-molecular-weight technology, applied in the field of preparation of high-molecular-weight polyaryletherketone, can solve the problems of low reaction temperature, difficult temperature, multiple by-products, etc.

Inactive Publication Date: 2018-05-04
SHANDONG KAISHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the initial charging reaction temperature of this method must be very low (generally as low as -15 to -30°C), otherwise more by-products will be generated, making it difficult to prepare high molecular weight polyaryletherketone
In terms of industrial production, such a low temperature is a waste of energy on the one hand, and on the other hand, it is difficult to clean the gel-like product generated after polymerization on the polymerization reactor, which makes it difficult to transfer heat. When the temperature is lowered, it is difficult to lower the temperature to a very low temperature. This method limits its production of higher molecular weight polymers in industrial production, thereby limiting its application in more aspects

Method used

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  • Method for preparing high molecular weight polyaryletherketone
  • Method for preparing high molecular weight polyaryletherketone

Examples

Experimental program
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Effect test

Embodiment 1

[0040]In a 500 mL round-bottomed three-neck flask equipped with a mechanical stirrer, a thermometer, and a nitrogen inlet and outlet tube, add 65 mL of dichloromethane, use an ice-water bath to lower the temperature of the flask to 0 ° C, and then add 19.83 g of N-formazan in two batches under stirring. Pyrrolidone, and 66.7g of aluminum trichloride, in the process of adding, ensure that the temperature in the reaction bottle does not exceed 25°C, after the addition is complete, continue to cool down to 5°C. In the resulting suspension, 14.922 g of terephthaloyl chloride, 4.974 g of isophthaloyl chloride, 0.354 g of 1,3,5-benzenetricarboxylic acid chloride, 17.021 g of diphenyl ether and 20 mL of diphenyl ether were added dropwise under stirring. During the addition of the mixed solution of methyl chloride, ensure that the temperature in the reaction bottle does not exceed 20°C. After the addition, wash the mixing bottle with 10 mL of dichloromethane to ensure that the monomer ...

Embodiment 2

[0042] In a 500 mL round-bottomed three-neck flask equipped with a mechanical stirrer, a thermometer, and a nitrogen inlet and outlet tube, add 65 mL of dichloromethane, use an ice-water bath to lower the temperature of the flask to 0 ° C, and then add 19.83 g of N-formazan in two batches under stirring. Pyrrolidone, and 66.7g of aluminum trichloride, in the process of adding, ensure that the temperature in the reaction bottle does not exceed 25°C, after the addition is complete, continue to cool down to 5°C. To the resulting suspension, 14.465 g of terephthaloyl chloride, 4.822 g of isophthaloyl chloride, 0.885 g of 1,3,5-benzenetricarboxylic acid chloride, 17.021 g of diphenyl ether and 20 mL of dichloromethane were then added dropwise under stirring For the mixed solution of methane, during the addition process, ensure that the temperature in the reaction bottle does not exceed 20 ° C. After the addition, wash the mixing bottle with 10 mL of dichloromethane to ensure that th...

Embodiment 3

[0044] In a 500 mL round-bottomed three-neck flask equipped with a mechanical stirrer, a thermometer, and a nitrogen inlet and outlet tube, add 65 mL of dichloromethane, use an ice-water bath to lower the temperature of the flask to 0 ° C, and then add 19.83 g of N-formazan in two batches under stirring. Pyrrolidone, and 66.7g of aluminum trichloride, in the process of adding, ensure that the temperature in the reaction bottle does not exceed 25°C, after the addition is complete, continue to cool down to 5°C. In the resulting suspension, 15.227 g of terephthaloyl chloride, 7.106 g of isophthaloyl chloride, 0.874 g of 1,3-diphenoxybenzene, 16.170 g of diphenyl ether and 20 mL of diphenyl ether were added dropwise under stirring. During the addition of the mixed solution of methyl chloride, ensure that the temperature in the reaction bottle does not exceed 20°C. After the addition, wash the mixing bottle with 10 mL of dichloromethane to ensure that the monomer is completely trans...

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Abstract

The invention belongs to the technical field of macromolecule special engineering plastics and in particular relates to a method for preparing high molecular weight polyaryletherketone. The method comprises the following steps: by taking aromatic oxalyl chloride, a polycyclic aromatic monomer with two active hydrogen atoms and a branching agent compound as polymerization monomers, enabling the components to react in the presence of lewis acid, lewis base and a polar aprotic solvent, thereby obtaining the high molecular weight polyaryletherketone. As multifunctional monomers are introduced to be polymerized, multifunctional compounds for a Friedel-Crafts acylation reaction are introduced, an aromatic electrophilic substitution route is adopted for preparation, and by using a lewis acid-lewis base co-catalysis method, the high molecular weight polyaryletherketone of which the branching degree can be controlled can be prepared under relatively gentle reaction conditions; after purification treatment, plates, rods, particles, membranes and the like can be prepared from the prepared polyaryletherketone through procedures of mold pressing, extrusion, injection molding, and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer special engineering plastics, and in particular relates to a preparation method of high molecular weight polyaryletherketone. Background technique [0002] Polyaryletherketone resin is a macromolecular linear rigid structure composed of benzene rings connected with ether bonds and ketone groups. Polyaryletherketone resin is a special engineering plastic with excellent performance. Its molecular structure contains benzene The chemical structure in which rings, ether bonds and ketone groups are neatly arranged with each other endows the molecule with highly stable chemical bond characteristics, making it have excellent mechanical properties, radiation resistance, high temperature resistance, chemical corrosion resistance and good electrical insulation and resistance. Combustibility, can be processed by extrusion, injection molding, molding and other processing methods, which have extremely high appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G67/00C08G61/12
CPCC08G67/00C08G61/127
Inventor 李光辉孙庆民马团芝贾亚非王帅坡贾远超张泰铭
Owner SHANDONG KAISHENG NEW MATERIALS
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