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Preparation method of benzoyl peroxide

A technology of benzoyl peroxide and benzoyl chloride, which is applied to the preparation of peroxy compounds, organic compounds, chemical instruments and methods, etc., and can solve the problems of low product yield and purity, high operating costs, and high side reaction rates. problems, to achieve the effect of reducing labor intensity of workers, improving productivity and quality, and reducing production costs

Active Publication Date: 2012-07-11
JIANGSU YUANYANG PHARMA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, there are some deficiencies in the traditional BPO production method: (1) Sodium hydroxide needs to be reacted at low temperature during the reaction process, the operating cost is high, and the side reaction rate is high; (2) The labor protection of workers in the operation under strong alkali conditions High requirements; (3) In order to obtain powder products, it is often necessary to add organic solvents to the reaction system, and the obtained products cannot be used in the production of food additives due to the toxicity and odor of organic solvents; (4) High production costs, The product yield and purity are low, and the product quality is not easy to control

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  • Preparation method of benzoyl peroxide
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preparation example Construction

[0013] The invention discloses a preparation method of benzoyl peroxide, which adopts benzoyl chloride as a raw material, and passes through ozone under the condition of strong alkali for oxidation reaction to prepare benzoyl peroxide.

[0014] In this reaction, the reaction temperature is 1°C-30°C, the reaction time is 1-10h, the preferred reaction temperature is 5°C-10°C, and the reaction time is 4-6h; in the reaction, benzoyl chloride, ozone and strong base three The molar ratio is 2:1-2:2, and the preferred molar ratio of benzoyl chloride, ozone and strong base in the reaction is 2:1.1-1.3:2; the strong base is 30% sodium hydroxide aqueous solution or 30% potassium hydroxide aqueous solution.

Embodiment 1

[0016] Add 267g of 30% sodium hydroxide in a 1000ml four-neck flask with a stirring and cooling device, add dropwise 283.8g of benzoyl chloride, and simultaneously introduce 48g of ozone, keep warm at 1°C for 1 hour with ice water, finish the reaction, and place it overnight. The white particles were filtered out, washed with water to obtain 204.6 g of benzoyl peroxide finished product, the yield was 84.55%, and the main content of benzoyl peroxide was 99.46% after testing.

Embodiment 2

[0018] Add 267g of 30% sodium hydroxide to a 10,000ml four-neck flask with a stirring and cooling device, dropwise add 283.8g of benzoyl chloride, and simultaneously introduce 52.8g of ozone, keep warm at 10°C for 4 hours with ice water, finish the reaction, and place it overnight , filter out the white particles, wash with water to obtain 210.8g of benzoyl peroxide finished product, the yield is 87.11%, and the main content of benzoyl peroxide is 99.57% after testing.

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Abstract

The invention discloses a preparation method of benzoyl peroxide, which adopts benzoyl chloride as raw material, and introduces ozone under the strong alkaline condition for oxidation to obtain benzoyl peroxide. Compared with the prior art, the inventive method has simple process, lowers labor intensity, improves production safety, reduces production cost, and improves yield and quality of the product.

Description

technical field [0001] The invention relates to the technical field of organic chemical synthesis, in particular to a preparation method of benzoyl peroxide. Background technique [0002] Benzoyl peroxide, also known as dibenzoyl peroxide, English name: Dibenzoyl peroxide (DPO for short), is a widely used fine chemical product intermediate. It is widely used in the polymerization reaction of vinyl series, styrene series, propylene series, vinyl acetate series, methacrylate series and various multi-component resins, and can also be used as a curing agent in the processing of polyester products. It is used as a crosslinking agent in the processing of silicon and fluororubber. In addition, it can be used as a bleaching agent and decolorizing agent for oil refining, flour whitening and fiber decolorization; and in the field of medicine, benzoyl peroxide can be formulated into various External preparation, used to treat seborrheic skin diseases such as acne and chronic ulcers, o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C409/34C07C407/00
Inventor 王敏文王建峰司双喜温建华任举
Owner JIANGSU YUANYANG PHARMA