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Stabilizer for improving hydrothermal stability of thiourea dioxide

A technology of thiourea dioxide and stabilizer, which is applied in the direction of organic chemistry, can solve the problems of thiourea dioxide decomposition and spontaneous combustion, and achieve the effects of reducing the pressure of wastewater treatment, improving wet stability, and strengthening complexation

Active Publication Date: 2017-08-11
濮阳圣恺环保新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to propose a kind of stabilizer that improves the moist heat stability of thiourea dioxide, and described stabilizer has solved the problems such as decomposition, spontaneous combustion of thiourea dioxide in storage process

Method used

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  • Stabilizer for improving hydrothermal stability of thiourea dioxide
  • Stabilizer for improving hydrothermal stability of thiourea dioxide

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Embodiment 1

[0023] A kind of stabilizer that improves the wet heat stability of thiourea dioxide, described stabilizer is made up of following components: 50g sodium thiosulfate, 50g magnesium stearate and 900g titanium dioxide. The stabilizer is prepared by mixing the components uniformly.

[0024] When in use: adopt the dry method to add to 100kg thiourea dioxide and mix well.

Embodiment 2

[0026] A stabilizer for improving the hygrothermal stability of thiourea dioxide, the stabilizer is composed of the following components: 300g sodium sulfate, 50g sodium bisulfate, 250g PMA-90 and 400g 4A zeolite. The stabilizer is prepared by mixing the components uniformly.

[0027] When in use: adopt the dry method to add to 100kg thiourea dioxide and mix well.

Embodiment 3

[0029] A stabilizer for improving the moisture-heat stability of thiourea dioxide, said stabilizer is composed of the following components: 150g disodium hydrogen phosphate, 150g sodium dihydrogen phosphate, 200g EDTA-2Na and 500g titanium dioxide. The stabilizer is prepared by mixing the components uniformly.

[0030] When in use: adopt the dry method to add to 100kg thiourea dioxide and mix well.

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Abstract

The invention discloses a stabilizer for improving hydrothermal stability of thiourea dioxide. The stabilizer is prepared from, by weight, 5-95 parts of neutralizer, and 5-95 parts of organic acid and / or organic acid salt; the neutralizer is prepared from one or more of carbonate, bicarbonate, sulfate, hydrosulfate, thiosulfate, phosphate, hydrophosphate, acetate, and metasilicate; the organic acid and / or organic acid salt is prepared from one or more of glucose saccharic acid, gluconate, edetic acid, ethanediamine tetraacetate, citric acid, citrate, stearic acid, stearate, maleic acid, maleate, oxalic acid, and oxalate. The stabilizer can has the advantages of effectively improving the wet stability and thermal stability of thiourea dioxide, and being small in cost, simple in processing step, and small in waste pollutant.

Description

technical field [0001] The invention belongs to the technical field of peroxides, and in particular relates to a stabilizer for improving the hygrothermal stability of thiourea dioxide. Background technique [0002] Thiourea dioxide is a new, environmentally friendly and powerful reducing agent that can replace sodium hydrosulfite. Its reducing ability is 5 times that of hydrosulfite. It is widely used in textiles, papermaking, photosensitive materials, cosmetics and other industrial fields. In recent years, it has been used in organic synthesis and analysis. The application in the recovery and separation of , medicine, spices and precious metals has also been continuously developed. Thiourea dioxide is a fine wet powder, which can accelerate its decomposition and even burn when exposed to the air or heated by moisture, so it needs to be kept away from moisture and sealed. The main factor restricting the development of thiourea dioxide is the low stability of thiourea dioxi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C381/14
CPCC07C381/14
Inventor 张乾霖陈志勇贾怀参刘国朋魏丽丽赵红阳邢燕燕苏运花杨波许玉凯
Owner 濮阳圣恺环保新材料科技股份有限公司
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