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The synthetic method of diacyl peroxide

A technology of diacyl peroxide and synthesis method, which is applied in the preparation of peroxy compounds, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of expensive chemical raw materials and corrosion of acyl chloride, and achieves optimization of synthesis process and emission reduction. Effect

Active Publication Date: 2020-04-07
LINZIZHENGHUA ACCESSORY INGREDIENT ZIBO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] It can be seen that the disadvantage of the above synthesis method is that the acid chloride itself is an expensive chemical raw material; in addition, the use of the acid chloride will lead to the formation of hydrogen chloride by-product, which is a corrosive substance; Environmental issues in the form of wastewater / waste solids

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] In a 500ml three-necked bottle, add 200ml of petroleum ether (60-90°C), 28g of hydrogen peroxide with a purity of 27.5%, 72g of 3,5,5-trimethylhexanoic acid, and 6g of spherical polyvinyl alcohol compound amino acid A. The reaction mixture was stirred and heated to reflux temperature of 70-80°C. After azeotropic distillation, the distillate was cooled and the water of reaction was removed in a trap. The petroleum ether was separated off and returned to the reaction vessel. After reacting for 4 hours, gas chromatography analysis showed that the product yield of di-(3,5,5-trimethylhexanoyl) peroxide was 86.9%.

Embodiment 2

[0060] In a 500ml three-necked bottle, add 200ml of petroleum ether (60-90°C), 28g of hydrogen peroxide with a purity of 27.5%, 72g of 3,5,5-trimethylhexanoic acid, and 4g of spherical polyvinyl alcohol compound amino acid B. The reaction mixture was stirred and heated to reflux temperature of 70-80°C. After azeotropic distillation, the distillate was cooled and the water of reaction was removed in a trap. The petroleum ether was separated off and returned to the reaction vessel. After reacting for 4 hours, gas chromatography analysis showed that the product yield of di-(3,5,5-trimethylhexanoyl) peroxide was 65.6%.

Embodiment 3

[0062] In a 500ml three-necked bottle, add 200ml of petroleum ether (60-90°C), 28g of hydrogen peroxide with a purity of 27.5%, 72g of 3,5,5-trimethylhexanoic acid, and 2g of spherical polyvinyl alcohol compound amino acid C. The reaction mixture was stirred and heated to reflux temperature of 70-80°C. After azeotropic distillation, the distillate was cooled and the water of reaction was removed in a trap. The petroleum ether was separated off and returned to the reaction vessel. After reacting for 4 hours, gas chromatography analysis showed that the product yield of di-(3,5,5-trimethylhexanoyl) peroxide was 60.7%.

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Abstract

The invention belongs to the technical field of chemical synthesis, and particularly relates to a synthesis method of diacyl peroxide. The synthesis method comprises the following steps: adding an acyl compound, hydrogen peroxide and a polyvinyl alcohol composite amino acid catalyst into an organic solvent, and performing a dehydration reaction while stirring to synthesize the diacyl peroxide, wherein the polyvinyl alcohol composite amino acid catalyst is obtained by polymerizing a spherical polyvinyl alcohol matrix and composite amino acid. Use of an expensive chemical raw material, namely acyl chloride, is avoided in the peroxide production process, a synthesis technology of the peroxide is optimized, and discharge of chloride-containing wastewater / waste solid in the industrial production process is reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a method for synthesizing diacyl peroxides. Background technique [0002] Diacyl peroxide is an industrially important polymer polymerization initiator, especially suitable for polyacrylate, polyethylene, polyvinyl chloride and polystyrene products. Industrially, diacyl peroxides are prepared from hydrogen peroxide and the corresponding acid chlorides. For example, lauryl peroxide is synthesized from lauroyl chloride and sodium peroxide, and tert-hexyl peroxypivalate is synthesized from tert-hexyl alcohol hydrogen peroxide, 20% NaOH solution and pivaloyl chloride, using similar methods It is also possible to synthesize tert-amyl peroxypivalate and tert-heptyl peroxypivalate. The synthetic method of dicumyl peroxide is: first react cumene with air to generate cumene hydroperoxide, then react cumene hydroperoxide with sodium sulfite to generate benzyl alcoh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C409/34C07C407/00B01J31/06
CPCB01J31/068C07C407/00C07C409/34
Inventor 陈唐建翟志强许淑女黄燕民崔黎明
Owner LINZIZHENGHUA ACCESSORY INGREDIENT ZIBO
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