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A kind of preparation method of the bisphenol f of high ortho isomer content

A technology of isomers and high ortho isomers, applied in the preparation of organic compounds, chemical instruments and methods, chemical recovery, etc., can solve the problems of complex preparation process and low content of bisphenol F ortho isomers, and achieve high efficiency The preparation method and the production process are simple, and the effect of being easy to separate, recycle and reuse

Inactive Publication Date: 2015-12-02
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing bisphenol F with high ortho-position content, so as to solve the shortcomings of low bisphenol F ortho-isomer content and complex preparation process in the existing bisphenol F preparation method

Method used

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  • A kind of preparation method of the bisphenol f of high ortho isomer content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Preparation of acidic mesoporous molecular sieve Zr-SBA-15 catalyst

[0014] 4 grams of polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer, 2.527 grams of NaCl, 9 grams of tetraethyl orthosilicate, 160 grams of deionized water, 0.7082 grams of ZrOCl 8H 2 O was added to the reaction kettle, mixed evenly, stirred and reacted for 24 hours under the condition of 40°C water bath, then put into the crystallization kettle, placed in a 100°C oven for crystallization for 24 hours, cooled to room temperature, filtered, and the obtained solid was first heated at 60°C Dry it in an oven for 6 hours, then put it into a muffle furnace for roasting, raise the temperature from room temperature to 550°C at a rate of 10°C / min and keep it for 8 hours, and then get the acidic mesoporous molecular sieve Zr-SBA-15 catalyst after cooling down.

[0015] (2) Catalytic synthesis of bisphenol F

[0016] Add 9.42 grams of phenol and 0.1 gram of acidic mesoporous molec...

Embodiment 2

[0018] Operation steps are with embodiment 1, and its difference is that added ZrOCl 8H 2 O is 0.2784 grams, and the molar ratio of the Zr of catalyst and Si atom is 0.02, and the yield of bisphenol F is 57.5%, and the quality of 4,4'-, 2,4'- and 2,2'-bisphenol F The percentages are 4.3%, 53.5% and 42.2%, respectively.

Embodiment 3

[0020] The operation steps are the same as in Example 1, the difference is that the amount of catalyst used is 0.08 g, and the yield of bisphenol F is 72.5%, and the mass percentages of 4,4'-, 2,4'- and 2,2'-bisphenol F 10.2%, 61.3% and 28.6% respectively.

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Abstract

The invention discloses a preparation method of bisphenol F with high ortho-isomeride content. The preparation method comprises the following step: through an acidic mesoporous molecular sieve Zr-SBA-15 catalyst, catalyzing phenol and formaldehyde aqueous liquor with the mass percentage of 35-40%, to synthesize the bisphenol F, wherein the adopted acidic mesoporous molecular sieve Zr-SBA-15 catalyst is synthesized in one step, and the activity of the catalyst can be regulated by regulating the mole ratio of Zr / Si atoms of the catalyst. The preparation method is simple in technology, high in catalysis efficiency, the bisphenol F with high ortho-isomeride content can be obtained, the catalyst is easily separated and recovered and repeatedly used, and no equipment corrosion and waste water treatment problems exist, so that the preparation method is an environment-friendly high-efficiency preparation method of the bisphenol F with high ortho content.

Description

technical field [0001] The invention relates to a preparation method of bisphenol F with high ortho isomer content. Background technique [0002] Bisphenol F is a bisphenol compound produced by the condensation reaction of phenol and formaldehyde. Its chemical name is dihydroxydiphenylmethane. There are 2,2'-, 2,4'-, 4,4'- It is an isomer, which is suitable for the preparation of low-viscosity epoxy resin. It is an important chemical intermediate, and its finished product is better than double epoxy resin in heat resistance, moisture resistance, insulation, processability and injection casting Phenol A epoxy resin is used to replace bisphenol A as an industrial raw material or the raw material of epoxy resin for large wind turbine blades. Due to the low viscosity of bisphenol F epoxy resin, less solvent or thinner can be added during use. Therefore, the production process can be simplified, the processing environment can be improved, and environmental pollution can be reduc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C39/16C07C37/20
CPCY02P20/584
Inventor 刘跃进谈瑛李勇飞吴志民魏元峰严家其潘浪胜
Owner XIANGTAN UNIV
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