Preparation method of block polyether ketone ketone

A technology of polyether ketone ketone and prepolymer, which is applied in the field of preparation of block polyether ketone ketone, can solve the problems of high production cost, low single batch output, slow crystallization speed, etc., and achieve low cost and simple process Effect

Active Publication Date: 2018-05-01
SHANDONG KAISHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitation of many synthetic steps and harsh production conditions, the single batch yield is low, resulting in high production costs; and the Lewis acid/Lewis base co-catalyzed prepar...

Method used

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  • Preparation method of block polyether ketone ketone
  • Preparation method of block polyether ketone ketone
  • Preparation method of block polyether ketone ketone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]Add 49 mL of dichloromethane to A in a 100 mL round-bottomed three-necked flask equipped with mechanical stirring, a thermometer, and a nitrogen inlet and outlet tube, and use an ice-salt bath to lower the temperature of the flask to -10°C, and then add 11.15 mL in two batches under stirring. gN-methylpyrrolidone, and 50g of aluminum trichloride, during the addition process, ensure that the temperature in the reaction bottle does not exceed -5°C, after the addition is complete, continue to cool down to -15°C. In the resulting suspension, add 15.227g of terephthaloyl chloride, 12.766g of diphenyl ether and 15mL of dichloromethane dropwise under stirring. During the addition, ensure that the temperature in the reaction bottle does not exceed -5°C After the addition, wash the mixing bottle with 5mL of dichloromethane to ensure the complete transfer of the monomer, keep it at -15°C for 1 hour, then raise the temperature to 25°C, and continue the reaction for 2 hours to obtain...

Embodiment 2

[0043] Add 39 mL of dichloromethane to A in a 100 mL round-bottomed three-necked flask equipped with mechanical stirring, a thermometer, and a nitrogen inlet and outlet tube, and use an ice-salt bath to lower the temperature of the flask to -10°C, and then add 8.92 in two batches under stirring. gN-methylpyrrolidone, and 40g of aluminum trichloride, during the addition process, ensure that the temperature in the reaction bottle does not exceed -5°C, after the addition is complete, continue to cool down to -15°C. In the resulting suspension, add a mixture of 12.181g of terephthaloyl chloride, 10.213g of diphenyl ether and 12mL of methylene chloride dropwise under stirring. During the addition, ensure that the temperature in the reaction bottle does not exceed -5°C After the addition, wash the mixing bottle with 12 mL of dichloromethane to ensure the complete transfer of the monomer, keep it at -15°C for 1.5 hours, then raise the temperature to 25°C, and continue the reaction for...

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Abstract

The invention belongs to the technical field of polymer synthesis and particularly relates to a preparation method of block polyether ketone ketone. The preparation method comprises the following steps of adding a solvent, lewis acid and lewis base in two prepolymerization reaction bottles respectively; and then respectively adding diphenyl ether and isophthaloyl/terephthaloyl dichloride with an equal molar ratio for reaction to produce a prepolymer A and a prepolymer B with better mobility, then adding the produced prepolymer A and prepolymer B in a polymerization reaction bottle for reaction, and performing mashing, washing and drying to prepare the block polyether ketone ketone. The preparation method is simple in technology and low in cost; and the prepared polyether ketone ketone hashigher degree of crystallinity and rapider crystallization rate.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and in particular relates to a preparation method of block polyether ketone ketone. Background technique [0002] Polyether ketone ketone (PEKK) resin is a special engineering plastic with excellent performance, which belongs to a kind of polyarylether ketone. The chemical bond characteristics make it have excellent mechanical properties, radiation resistance, high temperature resistance, chemical corrosion resistance, good electrical insulation and flame retardancy, and can be processed by extrusion, injection molding, molding and other processing methods. It has extremely high application requirements in aerospace, electrical and electronic, automotive and petroleum. [0003] [0004] The synthesis method of polyether ketone ketone reported in the literature is different from the synthesis method of polyether ether ketone by nucleophilic substitution, and most of them are prepared...

Claims

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Application Information

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IPC IPC(8): C08G61/12
CPCC08G61/127C08G2261/126C08G2261/312C08G2261/3442
Inventor 李光辉孙庆民贾亚非马团芝贾远超黄桂青韩楠楠
Owner SHANDONG KAISHENG NEW MATERIALS
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