Method for preparing sodium 3,3'-dithiodipropane sulfonate by using biological enzyme method

A technology of sodium polydisulfide dipropane sulfonate and sodium mercaptopropane sulfonate, which can be applied in sustainable manufacturing/processing, climate sustainability, chemical industry, etc., can solve the problem of not being able to truly achieve green environmental protection, and high risk of raw materials. problems, to achieve the effect of mild conditions, no pollution to the environment, and short process flow

Inactive Publication Date: 2017-09-01
JIANGSU MENGDE NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method involves organic solvents and hydrogen peroxide, the raw materials are dangerous, and it cannot really achieve environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Mix 150g of 3-mercaptopropane sodium sulfonate and 850g of water to prepare a 3-mercaptopropane sodium sulfonate solution with a mass fraction of 15%; add 0.1 mg of mercapto oxidase as a catalyst, control the reaction temperature to 20 degrees Celsius, and Ph was adjusted to 6.5, and 2ml / min of air was continuously introduced; after the catalytic reaction was completed, the solution was filtered through an ultrafiltration membrane, and then concentrated by a concentrator to obtain 146.2g of the product, and the product yield reached 98%.

Embodiment 2

[0022] Mix 200g of 3-mercaptopropane sodium sulfonate and 800g of water to configure a 20% mass fraction of 3-mercaptopropane sodium sulfonate solution; add 10 mg of mercapto oxidase as a catalyst, control the reaction temperature to 30 degrees Celsius, and adjust the pH of the solution to Adjust to 7, continue to pass through the air of 6ml / min; After the catalytic reaction is finished, the solution is filtered through an ultrafiltration membrane, and then concentrated by a concentrator to obtain 195.5g of product, and the product yield reaches 98.3%.

Embodiment 3

[0024] Mix 300g of 3-mercaptopropane sodium sulfonate and 700g of water to configure a 30% mass fraction of 3-mercaptopropane sodium sulfonate solution; add 100mg of mercapto oxidase as a catalyst, control the reaction temperature to 40 degrees Celsius, and adjust the pH of the solution to Adjust to 7.5, continue to pass through the air of 8ml / min; After the catalytic reaction is completed, the solution is filtered through an ultrafiltration membrane, and then concentrated by a concentrator to obtain 297.9g of product, and the product yield reaches 98.5%.

[0025] The present invention has at least the following advantages:

[0026] (1) This method uses thiol oxidase as a catalyst to specifically oxidize the sulfhydryl group (—SH) in MPS into a disulfide bond (—S—S—) in the presence of air, and simultaneously generate hydrogen peroxide. Hydrogen peroxide can continue to oxidize the remaining sulfhydryl groups (—SH) into disulfide bonds (—S—S—);

[0027] (2) The method of the ...

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PUM

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Abstract

The invention relates to a method for preparing sodium 3,3'-dithiodipropane sulfonate by using a biological enzyme method. The method comprises the following steps: S1, preparing a sodium 3-mercaptopropanesulphonate solution with the concentration of 15 to 30 percent; S2, selecting sulfhydryl oxidase as a catalyst and adding the sulfhydryl oxidase into the solution prepared in the step S1, and enabling the solution to continuously pass through air; meanwhile adjusting a pH value of the solution to 6.5 to 7.5, and carrying out aqueous-phase catalytic oxidation reaction; S3, after the catalytic reaction is finished, filtering the solution by using an ultrafiltration membrane, removing enzyme protein in the solution and carrying out decolorization; S4, carrying out concentrated dehydration on filtrate obtained in the step S3 by a thickener, thus obtaining the sodium 3,3'-dithiodipropane sulfonate. The method disclosed by the invention has the advantages of mild conditions, short process flow, simple steps, no pollution to the environment, low energy consumption and high efficiency.

Description

technical field [0001] The invention relates to a method for preparing sodium polydithiodipropanesulfonate, in particular to a method for preparing sodium polydithiodipropanesulfonate through biological enzymes. Background technique [0002] The chemical name of SPS is sodium polydisulfide dipropane sulfonate. It is used as an acidic copper plating brightener to obtain decorative and functional coatings. SPS can be combined with typical copper plating formulations such as nonionic surfactants, polyamines and mercapto compounds. In combination, it can also be used in combination with dyes. [0003] As an acidic copper plating intermediate, it belongs to the main additive in copper plating additives, which can refine the crystallization of the plating layer and effectively increase the current density. The existing method for preparing SPS generally adopts heterogeneous catalytic oxidation of MPS. The general catalyst is mainly tert-butyl ammonium iodide, and the oxidant is h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P11/00
CPCC12P11/00Y02P20/10
Inventor 杭康陆瑾连王建坤
Owner JIANGSU MENGDE NEW MATERIALS TECH CO LTD
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