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Peroxidized t-butyl perbenzoate production process

A technology of tert-butyl peroxybenzoate and production process, applied in the field of tert-butyl peroxybenzoate production technology, can solve problems such as low yield of finished products, increase in impurities, change in product color, etc., and achieve the effect of reducing impurities

Inactive Publication Date: 2006-04-26
HUALUN CHEM SUZHOU CITY
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to the large amount of raw material input in the original production process of this product, the yield of finished products is low, and the impurities are increased due to the many by-products, such as tert-butyl hydroperoxide and di-tert-butyl hydroperoxide. At the same time, the product also contains Contains a certain amount of iron ions, for example, the color of the product will change if it is placed at room temperature for no more than 15 days, which will affect the stability of product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of tert-butyl peroxybenzoate production technique, its operating process is as follows:

[0029] 1. Acid preparation: first put 324 kg of 98% concentrated sulfuric acid into a 1-ton acid-resistant reaction kettle, then add 130 kg of water under cooling conditions, so that the temperature is not higher than 80°C, and the dropping time is 60 minutes. Cool to room temperature. Get 454 kg of dilute acid for use.

[0030] 2. Esterification: Put 200 kilograms of tert-butanol into a 1-ton esterification reaction kettle, then add 454 kilograms of the above-mentioned dilute acid dropwise into it, inject frozen brine into the interlayer of the reaction kettle for circulation of the circulation pump, and use frozen brine to control its The temperature is between 30°C and 34°C. After the dropwise addition, 654 kg of esterified solution was obtained for subsequent use.

[0031] 3. Synthesis: 300 kilograms of hydrogen peroxide with a content of 27.5% is dropped into 1 ton o...

Embodiment 2

[0036] A kind of tert-butyl peroxybenzoate production technique, its operating process is as follows:

[0037] 1. Acid preparation: first put 324 kg of 98% concentrated sulfuric acid into a 1-ton acid-resistant reaction kettle, then add 130 kg of water under cooling conditions, so that the temperature is not higher than 80 ° C, the dropping time is 60 minutes, and the dropping speed is fast Slowly, after the dropwise addition, cool to room temperature. Get 454 kg of dilute acid for use.

[0038] 2. Esterification: Put 244 kg of tert-butanol into a 1-ton esterification reaction kettle, then add 454 kg of the above dilute acid dropwise, and control the temperature between 30°C and 34°C by using frozen brine. After the dropwise addition, 698 kg of esterified solution was obtained for subsequent use.

[0039] 3. Synthesis: Put 420 kilograms of hydrogen peroxide with a content of 27.5% into 1 ton of thick tertiary synthesis reactor, then add 698 kilograms of the above-mentioned e...

Embodiment 3

[0044] A kind of tert-butyl peroxybenzoate production technique, its operating process is as follows:

[0045] 1. Acid preparation: first put 228 kg of 98% concentrated sulfuric acid into a 1-ton acid-resistant reaction kettle, then add 92 kg of water under cooling conditions, so that the temperature is not higher than 80°C, and the dropping time is 60 minutes, and the dropping speed is slow first After that, cool to room temperature after the dropwise addition. Get 320 kg of dilute acid for use.

[0046] 2. Esterification: Put 200 kg of tert-butanol into a 1-ton esterification reaction kettle, then add 320 kg of the above-mentioned dilute acid dropwise, and control the temperature between 30°C and 34°C by using frozen brine. After the dropwise addition, 520 kg of esterified solution was obtained for subsequent use.

[0047] 3. Synthesis: 300 kilograms of hydrogen peroxide with a content of 27.5% are dropped into 1 ton of thick tertiary synthesis reaction kettle, then 520 ki...

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Abstract

The present invention is production process of tert-butyl benzoate peroxide with stable product quality. The production process includes the steps of: compounding acid, esterification, synthesis, compounding sodium salt, condensation, washing and drying. The present invention has the advantages of effective temperature control caused by dropping sodium salt into benzoyl chloride, reduced impurity and high product quality owing to several times of washing and other steps. The tert-butyl benzoate peroxide is used in organic synthesis as initiator for polymerization of polyethylene, polystyrene, polypropylene, etc., rubber sulfurizer, and mixed paint drying promoter.

Description

technical field [0001] The invention relates to a production process of tert-butyl peroxybenzoate, which belongs to the field of organic chemical industry. Background technique [0002] At present, the traditional tert-butyl peroxybenzoate product on the market, also known as tert-butyl perbenzoate, referred to as: TBPB or CP-02, properties: colorless transparent liquid, with aroma, melting point 8.8C, boiling point 124C, relatively Density 1.043, refractive index 1.495-1.499 (20C), insoluble in water, soluble in general organic solvents, decomposed in water, stable at room temperature, non-corrosive to steel and aluminum. Uses: as raw material for organic synthesis, used in high pressure polyethylene, polystyrene, polypropylene and other polymerization initiators, rubber vulcanizing agents, and drying accelerators for blended paints. Due to the large amount of raw material input in the original production process of this product, the yield of finished products is low, and ...

Claims

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Application Information

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IPC IPC(8): C07C409/24
Inventor 黄一龙
Owner HUALUN CHEM SUZHOU CITY
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