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Preparation method of bisphenol A diallyl ether

A technology of bisallyl ether and allyl halide, applied in the field of organic compound synthesis, can solve the problems of influence of purity, deep color and the like, and achieve the effects of low price, simple reaction conditions and production cost saving

Active Publication Date: 2018-09-14
ZHEJIANG HUANGMA TECH +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the above-mentioned defects in the existing bisphenol A diallyl ether synthesis method, the present invention adds a water absorbing agent during the reaction between bisphenol A and alkali, which overcomes the influence of water on the purity of the target product and the problem of deep color in the reaction. question

Method used

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  • Preparation method of bisphenol A diallyl ether

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Add 228g of bisphenol A into a 1000ml four-neck flask, start stirring, add 260g of toluene, after the bisphenol A is completely dissolved, add 90g of sodium hydroxide and 28.9g of calcium oxide, stir evenly, start to drop 229.5g of allyl chloride, The temperature was raised to 100°C, and the reaction was kept for 3 hours. After the reaction was completed, the temperature was lowered to room temperature to obtain a crude product; the crude product was filtered to remove salt and vacuum distillation to remove low boilers with a purity of 92.9% and a color of 17.

Embodiment 2

[0032] Add 228g of bisphenol A into a 1000ml four-neck flask, start stirring, add 260g of xylene, after the bisphenol A is completely dissolved, add 123.2g of potassium hydroxide and 30.6g of calcium oxide, stir evenly, and start to dropwise add 229.5g of allyl chloride g, the temperature was raised to 100° C., and the temperature was kept for 3 hours. After the reaction was completed, the temperature was lowered to room temperature to obtain a crude product; the crude product was filtered to remove salt and vacuum distillation to remove low boilers, and the product obtained had a purity of 93.9% and a color of 16.

Embodiment 3

[0034] Add 228g of bisphenol A into a 1000ml four-neck flask, start stirring, add 450g of ethylene glycol dimethyl ether, after the bisphenol A is completely dissolved, add 80g of sodium hydroxide and 100g of anhydrous calcium sulfate, stir evenly, and start to add ethylene glycol dimethyl ether dropwise. 382.5g of propyl chloride was heated up to 85°C and kept for 16h. After the reaction was completed, the temperature was lowered to room temperature to obtain a crude product; the crude product was filtered to remove salt and vacuum distillation to remove low boilers, and the product obtained had a purity of 92.3% and a color of 19.

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Abstract

The invention belongs to the technical field of synthesis of organic compounds, and specifically relates to a preparation method of bisphenol A diallyl ether. The preparation method of bisphenol A diallyl ether comprises the following steps: (1) adding bisphenol A and a solvent into a reaction kettle, stirring for dissolving, and adding alkali and a water absorbent; (2) dropwise adding allyl halide at a certain temperature, and reacting for a certain time, thus obtaining a crude product; (3) filtering and desalting the crude product, carrying out vacuum distillation, and removing a low-boilingpoint substance, thus obtaining a finished product. The preparation method of bisphenol A diallyl ether, disclosed by the invention, is capable of effectively controlling the water content in a reaction system, reaction is facilitated to proceed forwards, steps for waste treatment in production are greatly reduced, the production cost is reduced, and the preparation method is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of organic compound synthesis, and in particular relates to a preparation method of bisphenol A diallyl ether. Background technique [0002] Bisphenol A diallyl ether is an important intermediate in organic synthesis, which can be rearranged to form diallyl bisphenol A under high temperature or catalyst conditions. Diallyl bisphenol A can improve the toughness and temperature resistance of the resin, reduce the curing temperature of the resin, and the resin modified by diallyl bisphenol A has excellent mechanical properties, dielectric properties and heat resistance, and is extremely It has commercial development value. At present, the industry mainly uses bisphenol A diallyl ether to synthesize diallyl bisphenol A through the transposition method. Therefore, the quality of bisphenol A diallyl ether has an important influence on the synthesis of diallyl bisphenol A. [0003] At present, the main preparati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C43/215C07C41/16C07C37/66C07C39/235
CPCC07C37/66C07C41/16C07C39/235C07C43/215
Inventor 吴凯飞金一丰张美军王新荣严立峰夏益初
Owner ZHEJIANG HUANGMA TECH
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