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Bisphenol A synthetic catalyst and preparation method thereof

A technology of catalyst and quaternary ammonium salt, which is applied in the field of catalyst and preparation of bisphenol A synthesized by ion exchange resin method, can solve the problems of inconvenient mercapto modification of base resin, long synthesis route, large amount of organic solvent, etc., and achieves Excellent catalytic activity and selectivity, the effect of simple synthesis method

Inactive Publication Date: 2004-11-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a long synthetic route, a large amount of organic solvent, high catalyst production cost, and is not convenient for mercapto-modification of the base resin at the production site of bisphenol A.

Method used

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  • Bisphenol A synthetic catalyst and preparation method thereof
  • Bisphenol A synthetic catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In a 100 ml four-necked flask equipped with a stirrer, a thermometer, and a condenser tube, add 3.2 g of N,N-dimethyl-3-mercaptopropylamine, 50 ml of deionized water, and 4.5 g of bromoethane, at room temperature under nitrogen protection. Stir until gas chromatography analysis shows that N,N-dimethyl-3-mercaptopropylamine is completely reacted, and distill off excess bromoethane under reduced pressure.

[0025] Under the protection of nitrogen, add 150 milliliters of deionized water, 100 grams of wet state CT124 sulfonic acid type cation-exchange resin (Purolite company product, exchange capacity 5mmol / g) in the above-mentioned reaction liquid that distills bromoethane, stir 5 hours, Filter out the resin, put it into an ion exchange column, and use 1000 ml of deionized water at a space velocity of 2h -1 (volume) Wash until the effluent is neutral. The mercaptolation rate of the obtained catalyst was 14.9%

[0026] Put 30 milliliters of the above-mentioned catalyst in...

Embodiment 2

[0028] Catalyst preparation steps are as example 1, change ethyl bromide into 1-chloropropane, measure the conversion rate of acetone and the method of the selectivity of bisphenol A as example 1, the results are shown in Table 1.

Embodiment 3

[0030] Catalyst preparation steps are as example 1, change ethyl bromide into 1-chlorobutane, the method for measuring the conversion rate of acetone and the selectivity of bisphenol A is as example 1, and the results are shown in Table 1.

[0031] example

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Abstract

The invention relates to a bisphenol A catalyst synthesized by ion exchange resin method and its preparing method, using N,N-dimethyl-3- mercapto propylamine to react with alkylogen in order to produce a hyamine, which exchanges with partial hydrogen ions on sulfoacid cation exchange resin in the deionized water, in order to obtain the synthetic catalyst with high acetone conversion and good disphenol A selectivity.

Description

Technical field [0001] The invention relates to a compound and a synthesis method thereof, in particular to a catalyst for synthesizing bisphenol A by an ion exchange resin method and a preparation method thereof. Background technique [0002] The synthesis of bisphenol A by ion exchange resin has simple process, less corrosion of equipment, and less three wastes. The raw material of high insulation grade epoxy resin - the advanced production process of bisphenol A. [0003] Currently used ion exchange resin catalysts, the base resin is a gel or macroporous sulfonic acid type cation exchange resin with an exchange capacity of 2.0-5.5 mmol / g dry resin. Such as sulfonated styrene-divinylbenzene copolymer, sulfonated phenolic resin, etc., the applicable brand names are: Amberlite-118, -200, -IR, -XE307; Amberlyst-15, -31, -131; Dowex-50; Purolite CT151, CT124, etc. [0004] The above-mentioned basic resin is modified into a catalyst for the synthesis of bisphenol A, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/10C07C37/20C07C39/16C08F8/44
Inventor 陈群何明阳张文雯张卫红
Owner CHINA PETROLEUM & CHEM CORP