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Production technology of piperonyl butoxide composited by sassafras oil

A technology of piperonyl butoxide and production process, applied in directions such as organic chemistry, to achieve the effect of improving reaction conversion rate

Inactive Publication Date: 2017-05-24
重庆宏兆科技有限公司
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  • Abstract
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Problems solved by technology

But all do not have concrete in the synthetic method of prior art, the detailed process report of the production technique of the piperonyl butoxide synthesized by sassafras oil

Method used

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Embodiment Construction

[0018] (1) In the catalytic hydrogenation process, select the reactor of 1000 liters for use, add 700 kilograms of sassafras oil, add 20-60 kilograms of catalyst lithium-nickel alloy powder, add hydrogen 80-180 cubic (volume under one atmospheric pressure), react The conditions are that the pressure is 4-10 kg / cm2, the temperature is 30-100 DEG C, the stirring speed is 30-85 rev / min, the reaction time is controlled at 180-300 minutes, and the content of dihydrosafrole oil is 90%-98%.

[0019] (2) In the chloromethylation process, select the reaction kettle of 5000 liters for use, the stirring speed is 25-90 rev / min, add 700 kilograms of dihydrosafrole oil, add 2500-3500 kilograms of hydrochloric acid of concentration 33%, add polymer 200-300 kg of formaldehyde, 2 kg of tetraethylammonium bromide is added, the reaction temperature is 30-80 degrees, and the reaction time is 4-6 hours.

[0020] (3) In the etherification process, select the reaction kettle of 3000 liters for u...

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Abstract

A production technology of piperonyl butoxide composited by sassafras oil comprises the following procedures of catalytic hydrogenation, chloromethylation and etherification. In the catalytic hydrogenation procedure, the sassafras oil and hydrogen are mixed and react to generate dihydro sassafras oil by the action of a catalyst, and the catalyst is lithium and nickel alloy powder. In the chloromethylation procedure, the dihydro sassafras oil, hydrochloric acid and paraformaldehyde are mixed and react in the presence of an assistant to generate chloromethyl material reaction liquid, and the assistant is tetraethyl ammonium bromide. In the etherification procedure, the chloromethyl material reaction liquid, sodium hydroxide, monobutyl ether and ethidene diamine are mixed and react, and a resultant contains piperonyl butoxide. Hydrochloric acid is employed as an additive; the reaction conversion rate is increased; piperonyl butoxide is light-colored or white liquid; the yield reaches 90% or higher; the content is 95-98%.

Description

technical field [0001] The invention relates to a production process of piperonyl butoxide synthesized from sassafras oil. Background technique [0002] In the prior art, Chinese patent application 200410019314.2 discloses a method for purifying piperonyl butoxide synthesized from sassafras oil. The production process of piperonyl butoxide synthesized from sassafras oil generally includes the following steps: catalytic hydrogenation, chloromethylation, Etherification. But all do not have concrete in the synthetic method of prior art, the production technology detailed process report of the piperonyl butoxide synthesized by sassafras oil. Contents of the invention [0003] The purpose of this invention is to provide a kind of production technology of the piperonyl butoxide synthesized by sassafras oil, and the yield of its final piperonyl butoxide is higher. [0004] Technical scheme of the present invention is: a kind of production technique of the piperonyl butoxi...

Claims

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Application Information

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IPC IPC(8): C07D317/54
CPCC07D317/54
Inventor 朱兆虎向涛
Owner 重庆宏兆科技有限公司
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