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Polyaryletherketone imidazole and preparation method thereof

A technology for polyaryletherketimidazole and bisbenzimidazole, which is applied in the field of polyaryletherketimidazole and its preparation, can solve the problems of complex synthetic process route, high cost, low yield and the like, and achieves simple operation process, good resistance to The effect of heat resistance and low preparation cost

Inactive Publication Date: 2012-02-08
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many research institutions in my country are conducting research in this area, they have not launched products for engineering applications
From the current domestic situation, the tetraamine monomers for the synthesis of polybenzimidazoles have not yet been commercialized, and the synthesis process route of the monomers is complicated, the yield is low, and the cost is high, which hinders the engineering application process of polybenzimidazoles

Method used

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  • Polyaryletherketone imidazole and preparation method thereof
  • Polyaryletherketone imidazole and preparation method thereof
  • Polyaryletherketone imidazole and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In a 50mL three-necked flask, add 0.01mol terephthalic acid, 0.022mol o-phenylenediamine, 2mL polyphosphoric acid and 8mL phosphoric acid. 2 Under the protection of , the reaction was stirred at 190 °C for 4 h. After the solution is cooled, pour it into 100 mL of cold distilled water, add 15% NaOH solution dropwise, and neutralize to pH=8. After the solution was allowed to stand for 6 h, it was suction filtered, washed with water, and dried to obtain a solid crude product. Dissolve the crude product in N,N- Dimethylformamide was recrystallized and vacuum-dried at 60°C to obtain bisbenzimidazole- .

[0028]

[0029] In a nitrogen atmosphere, bisbenzimidazole- 0.01 mol, 0.02 mol of 4'4-difluorobenzophenone, 0.04 mol of anhydrous potassium carbonate, 10 mL of sulfolane and 4 mL of chlorobenzene. The system was raised from room temperature to 145 °C and kept for 2 h. Then the temperature is raised from 145°C to 180°C, and the water separator allows the chlorobe...

Embodiment 2

[0033] In a 50mL three-necked flask, add 0.01mol 4'4 diacid diphenyl ether, 0.022mol o-phenylenediamine, 2mL polyphosphoric acid and 8mL phosphoric acid. 2 Under the protection of , the reaction was stirred at 190 °C for 4 h. After the solution is cooled, pour it into 100mL of cold distilled water, add dropwise 15% NaOH solution, neutralize to pH=8, and generate a large amount of green precipitate. After the solution was left for 6 hours, it was suction filtered, washed with water and dried to obtain a solid crude product. The crude product was dissolved in absolute ethanol for recrystallization and vacuum drying at 60°C to obtain bisbenzimidazole- .

[0034]

[0035] In a nitrogen atmosphere, add benzimidazole- 0.01 mol, 0.02 mol of 4'4-difluorobenzophenone, 0.04 mol of anhydrous potassium carbonate, 10 mL of sulfolane and 4 mL of chlorobenzene. The system was raised from room temperature to 145 °C and kept for 2 h. Then the temperature is raised from 145°C to 180°...

Embodiment 3

[0039] In a 50mL three-necked flask, add 0.01mol 4'4 diacid benzophenone, 0.022mol o-phenylenediamine, 2mL polyphosphoric acid and 8mL phosphoric acid, in N 2 Under the protection of , the reaction was stirred at 190 °C for 4 h. After the solution is cooled, pour it into 100mL of cold distilled water, add dropwise 15% NaOH solution, neutralize to pH=8, and generate a large amount of green precipitate. After the solution was left for 6 hours, it was suction filtered, washed with water and dried to obtain a solid crude product. Dissolve the crude product in N,N-Dimethylformamide (DMF) was recrystallized and vacuum dried at 60°C to obtain bisbenzimidazole- .

[0040]

[0041] In a nitrogen atmosphere, bisbenzimidazole- 0.01 mol, 0.02 mol of 4'4-difluorobenzophenone, 0.04 mol of anhydrous potassium carbonate, 10 mL of sulfolane and 4 mL of chlorobenzene. The system was raised from room temperature to 145 °C and kept for 2 h. Then raise the temperature from 145°C to 19...

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Abstract

The invention discloses polyaryletherketone imidazole and a preparation method thereof. The general structural formula of the polyaryletherketone imidazole is FORMULA. The invention further relates to a preparation method of the polyaryletherketone imidazole. The preparation method comprises the steps of: regarding aromatic diacid and o-phenylenediamine as reactants to obtain a bis-benzimidazole compound under catalysis of a polyphosphoric acid and phosphoric acid system; regarding aromatic ketone difluoride and the bis-benzimidazole as reactants, sulfolane as a solvent and chlorobenzene as a water remover to obtain arone imidazole intermediate body under catalysis condition of anhydrous potassium carbonate; and adding aromatic diphenol in the reaction system to obtain a target product polyaryletherketone imidazole after a further reaction. The polyaryletherketone imidazole prepared by the invention is good in heat resistance, mechanical property and solubility, low in preparation cost and simple in operation process.

Description

technical field [0001] The invention relates to a polyarylether ketone imidazole and a preparation method thereof, more specifically, the invention relates to a heat-resistant soluble high-performance polyarylether ketone imidazole and a preparation method thereof. Background technique [0002] Polyaryletherketone resin is a fully aromatic polymer formed by connecting phenylene rings through oxygen bridges and carbonyl groups. Due to its excellent mechanical and mechanical properties, it is heat-resistant, corrosion-resistant, radiation-resistant and high-dielectric It has excellent comprehensive performance such as safety, so it has broad application prospects in the fields of aerospace, military equipment and civil industry. Polyether ether ketone is the most commonly used polymer variety in polyarylether ketone resins. However, polyether ether ketone has its own shortcomings while having good heat resistance and solvent resistance. For example: (1) glass The transition t...

Claims

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Application Information

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IPC IPC(8): C08G65/40
Inventor 常冠军张林罗炫林润雄
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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