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Copolymer of polyarylether nitrile containing chian element of iso-benzene and preparation method

A technology of polyarylene ether nitrile and m-phenylene chain link, which is applied in the field of engineering plastics, can solve the problems of monotonous performance, poor interactive adjustment between material structure and performance, etc., and achieve increased molecular weight, significant economic and social benefits, and high performance-price ratio Effect

Inactive Publication Date: 2007-10-10
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, there have been some preliminary studies and application reports on copolymers [Materials Letters, 59(1), 59(2005); 60, 137(2006)], but their preparation and molecular design are simple, and the interaction between material structure and performance Poor adjustment, monotonous performance

Method used

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  • Copolymer of polyarylether nitrile containing chian element of iso-benzene and preparation method
  • Copolymer of polyarylether nitrile containing chian element of iso-benzene and preparation method
  • Copolymer of polyarylether nitrile containing chian element of iso-benzene and preparation method

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Embodiment 1

[0033] The preparation of embodiment 1 polyarylether nitrile copolymer of the present invention

[0034] with separator, stirrer, thermometer and N 2 Add 2 moles (344 grams) of dichlorobenzonitrile, 110 grams of resorcinol (1 mole), 1 mole of hydroquinone (110 grams), and 20 moles of N-methylpyrrolidone in the four-necked bottle of import and export. (1980 grams), 2.17 moles (300 grams) of anhydrous potassium carbonate, 4.3 moles (400 grams) of toluene, pass into N 2 , start stirring, heat up to 120-160°C for dehydration reaction for 2-5 hours, distill off the toluene, raise the temperature to 180-200°C, and react for 2-5 hours. Poured into water while hot, precipitated, acidified with dilute hydrochloric acid to pH 7, filtered, the dried crude product was dissolved in dimethylformamide, the filtered clear was precipitated in water / methanol, and finally dried in vacuum to obtain Polyarylether nitrile copolymer of m-phenylene chain, yield 98%, 10-20% solubility in DMF, DMAc, ...

Embodiment 2

[0035] The preparation of embodiment 2 polyarylene ether nitrile copolymers of the present invention

[0036] with separator, stirrer, thermometer and N 2 Add 2 moles of dichlorobenzonitrile (344 grams), 1 mole of resorcinol (110 grams), 1 mole of phenolphthalein (314 grams), and 30.3 moles of N-methylpyrrolidone (3000 grams) in the four-necked bottle of import and export. ), anhydrous potassium carbonate 2.17 moles (300 grams), toluene 4.3 moles (400 grams), pass into N 2 , start stirring, heat up to 120-160°C for dehydration reaction for 2-5 hours, distill off the toluene, raise the temperature to 180-200°C, and react for 2-5 hours. Poured into water while hot, precipitated, acidified with dilute hydrochloric acid to pH 7, filtered, the dried crude product was dissolved in dimethylformamide, the filtered clear was precipitated in water / methanol, and finally dried in vacuum to obtain The polyarylether nitrile copolymer of m-phenylene chains has a yield of 97%, has a solubil...

Embodiment 3

[0037] Embodiment 3 The preparation of polyarylether nitrile copolymer of the present invention

[0038] with separator, stirrer, thermometer and N 2Add 2 moles of dichlorobenzonitrile (344 grams), 1 mole of resorcinol (110 grams), 1 mole of biphenol (186 grams), and 30.3 moles of N-methylpyrrolidone in the four-necked bottle of import and export. (3000 grams), anhydrous potassium carbonate 2.17 moles (300 grams), toluene 4.3 moles (400 grams), pass into N 2 , start stirring, heat up to 120-160°C for dehydration reaction for 2-5 hours, distill off the toluene, raise the temperature to 180-200°C, and react for 2-5 hours. Poured into water while hot, precipitated, acidified with dilute hydrochloric acid to pH 7, filtered, the dried crude product was dissolved in dimethylformamide, the filtered clear was precipitated in water / methanol, and finally dried in vacuum to obtain Polyarylether nitrile copolymer of m-phenylene chain, yield 99%, 10-15% solubility in DMF, DMAc, NMP and o...

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Abstract

This invention relates to arylether-nitrile copolymer with isobenyl units. This invention can facilitate easy breakage of structural symmetry, easy control over the synthesis process, and easy increase of the product molecular weight by copolymerization reaction. This invention can control the structure and properties of the product by adjusting the ratio of resocin to the other dihydric phenol as well as its variety. This method can change the mechanical and thermal properties of the copolymer by changing the variety of the dihydric phenol, and improve the mechanical and thermal properties by increasing the amount of the dihydric phenol. This invention has such advantages as low raw material cost, abundant raw materials, low product price, high cost performance, and wide applications.

Description

technical field [0001] The invention relates to a polyarylether nitrile copolymer containing m-phenylene chain segments and a preparation method thereof, belonging to the field of engineering plastics. Background technique [0002] The research on polyarylether nitrile began in 1973 with the General Electric Company of the United States [U.S.P.3,730,946], which utilized nitro substitution reactions, but the side reactions were large, and the products were basically not practical. In the early 1980s, D.K.Mohanty etc. prepared a polyarylether nitrile homopolymer with practical application properties with dihalogenated benzonitrile [ACS Polymer Preprints, 23 (1) 284 (1982); 24 (1), 147 (1983) ], and then achieved rapid development. In 1986, Japan's S.Matsuo and others applied for a series of patents: EP0192177 (1986), EP0243000 (1987); U.S.P5,153,306 (1992); J.P05,310913 (1993). Due to the limitations of structural features, polymers can only be melt-processed at high temperat...

Claims

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Application Information

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IPC IPC(8): C08G65/40C08G65/46
Inventor 刘孝波罗道文陈文瑾曹国萍龙盛如何毅
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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