Synthesis method of bisphenol A epoxy resin

A technology of epoxy resin and synthesis method, which is applied in the field of chemical product processing, can solve the problems of many intermediate by-products, waste of raw materials, complex production methods, etc., and achieve the effect of improving the utilization rate of raw materials, reducing production costs, and simple methods

Inactive Publication Date: 2015-04-29
ANHUI ZHUCHENG INFORMATION TECH
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0002] Bisphenol A type epoxy resin is an alicyclic epoxy resin without double bonds in the molecule. It has good weather resistance, excellent electrical properties, low viscosity, and good packaging technology. However, the current production method is relatively complicated, and intermediate by-products Many, serious waste of raw materials, unable to meet the market demand for a large number of bisphenol A epoxy resin, need a simple production and processing method of bisphenol A epoxy resin

Method used

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Embodiment Construction

[0012] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples.

[0013] Bisphenol A type epoxy resin synthesis method, raw material mainly contains: hydrogenated bisphenol A, epichlorohydrin, toluene, sodium hydroxide, comprises the following steps:

[0014] (1) Add hydrogenated bisphenol A, epichlorohydrin, sodium hydroxide and toluene in sequence in the three-necked flask, heat and stir;

[0015] (2) After the reaction is complete, add distilled water to remove alkali, and continue heating to 70°C;

[0016] (3) Add aqueous sodium hydroxide solution and stir for 2 to 3 hours;

[0017] (4) Wash the liquid separation with distilled water until the ph value of the separated water layer is neutral;

[0018] (5) Distill the filtrate at 100°C. The tail gas in the condensation and deposition process is vented.

[0019] The addition of aque...

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Abstract

The invention relates to a synthesis method of a bisphenol A epoxy resin. The bisphenol A epoxy resin is mainly prepared from hydrogenated bisphenol A, epoxy chloropropane, toluene and sodium hydroxide. The method comprises the following steps: sequentially adding hydrogenated bisphenol A, epoxy chloropropane, sodium hydroxide and toluene into a three-neck flask, heating and stirring; after the reaction is complete, adding distilled water to remove alkali, and continuing heating to 70 DEG C; adding a sodium hydroxide water solution, and stirring for 2-3 hours; washing with distilled water, and skimming until the pH value of the separated water layer is neutral; and distilling the filtrate at 100 DEG C, wherein the exhaust is evacuated in the condensation and deposition process. The synthesis method has the advantages of simple process, no byproduct and higher utilization ratio of the raw materials.

Description

technical field [0001] The invention relates to the field of chemical product processing methods, in particular to a bisphenol A type epoxy resin synthesis method. Background technique [0002] Bisphenol A type epoxy resin is an alicyclic epoxy resin without double bonds in the molecule. It has good weather resistance, excellent electrical properties, low viscosity, and good packaging technology. However, the current production method is relatively complicated, and intermediate by-products Many, the raw material waste is serious, can't satisfy the market demand to a large amount of bisphenol A type epoxy resins, need a kind of simple production and processing method of bisphenol A type epoxy resins. Contents of the invention [0003] The invention provides a method for synthesizing bisphenol A epoxy resin, which is simple, has no by-products, and improves the utilization rate of raw materials. [0004] Bisphenol A type epoxy resin synthesis method, raw material mainly con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/04
Inventor 苏志玉
Owner ANHUI ZHUCHENG INFORMATION TECH
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