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Copoaromatic ether and preparation thereof

A technology of copolyarylate and bisphenolic acid ester, which is applied in the field of copolyarylate and its preparation, copolyarylate of bisphenolic acid or its derivative structural unit and its preparation, can solve the problems of heat resistance reduction, etc., and achieve The effect of short polymerization time, fast polymerization rate, and expanded application range

Inactive Publication Date: 2008-05-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Although the solubility of the flexible polyarylate obtained by substituting part of bisphenol A with phthaloyl chloride is greatly improved, its heat resistance is significantly reduced because the aliphatic ester group is located on the main chain. How to introduce aliphatic ester bonds while maintaining the excellent heat resistance of polyarylate remains to be solved; how to introduce polar functional groups into polyarylate, such as carboxyl, carboxylate, etc. Applications in new fields such as catalysts, chelating agents, drug carriers, polyelectrolytes, etc. also have very important practical value

Method used

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  • Copoaromatic ether and preparation thereof
  • Copoaromatic ether and preparation thereof
  • Copoaromatic ether and preparation thereof

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preparation example Construction

[0030] In the preparation method of copolyarylate provided by the present invention, the reaction time is short under the normal temperature of the polymerization, and the copolyarylate with pendant carboxyl, carboxylate or carboxylate functional group can be obtained within 2 hours. The yield can reach more than 90%.

[0031] The intrinsic viscosity of the polymer is measured by Ubbelohde viscometer at a concentration of 0.5g / dl at 30°C, and the solvent is H 2 SO 4 4.76% by volume phenol / tetrachloroethane (3:2, w / w).

Embodiment 1

[0040] In the three-port reactor, bisphenolic acid (DPA, 0.01mol, 2.863g), NaOH (0.03mol, 1.2g), 90ml deionized water, stirred to completely dissolve the bisphenolic acid, constant temperature at 25°C, quickly add m-benzene Diformyl chloride / terephthaloyl chloride (IPC / TPC=3:7, 0.01mol, 2.03g) in 50ml of dichloromethane was stirred at 400rpm and reacted for 1 hour. After the reaction, add dilute HCl solution to adjust the pH of the solution to about 3, then wash with deionized water and acetone, filter, and dry under vacuum at 100° C. for 12 hours. The yield of the obtained copolyarylate was 56.7%, and the reduced viscosity was 0.558dl / g.

Embodiment 2

[0042] In the three-port reactor, bisphenolic acid (DPA, 0.01mol, 2.863g), NaOH (0.03mol, 1.2g), deionized water 90ml, phase transfer catalyst tetrabutylammonium chloride (TBAC, 0.117g, 4mol%) / [DPA]), stirring, to completely dissolve the bisphenolic acid, at a constant temperature of 25°C, quickly add 50ml of isophthaloyl chloride / terephthaloyl chloride (IPC / TPC=3:7, 0.01mol, 2.03g) The methyl chloride solution was stirred at a speed of 400 rpm, and reacted for 1 hour. After the reaction, dilute HCl solution was added to adjust the pH of the solution to about 3, then washed with deionized water and acetone, filtered and dried in vacuum at 100° C. for 12 hours. The yield of the obtained copolyarylate was 89.8%, and the reduced viscosity was 0.827dl / g.

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Abstract

A copolyester aryl and its production are disclosed. The copolyester aryl consists of bisphenol A structural unit, terephthalyl acyl structural unit, isophthalamic acyl structural unit, at least a diphenolic acid or diphenolic ester structural unit or diphenolic salt structural unit, or hung carboxy, carboxylic ester and carboxylic salt on side chain. The process is carried out by taking bisphenol monomer containing at least a diphenolic acid or its derivative and phthalchlorine monomer as raw material, taking quaternary ammonium salt as phase transfer catalyst, and interfacial polycondensation reacting under 10-50 Deg C. to obtain copolyester aryl. It achieves fast polymerization speed, short time, low temperature, more yield and molecular weight.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a copolyarylate and a preparation method thereof, in particular to a copolyarylate containing at least one bisphenolic acid or its derivative structural unit and a preparation method thereof. technical background [0002] Polyarylate broadly refers to the ester group Polymers with aromatic rings connected at both ends, industrially refer to the polymers prepared by polymerization of bisphenol A and terephthalic acid (or terephthaloyl chloride) and isophthalic acid (or isophthaloyl chloride) as raw materials. Aryl ester resins are mostly copolyarylates in practical applications. [0003] In 1973, Japan's Unitika (Unitika) company first industrialized, the trade name is U-polymer, and the basic grade is U-100. The density of aromatic rings in the main chain of polyarylate is high, the heat resistance of the resin is high, and the heat distortion temperature (1.8MPa) reac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/195C08G63/78
Inventor 李伯耿吴林波张萍
Owner ZHEJIANG UNIV
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