Production techinology of piperonyl butoxide synthesized from sassafras oil

A technology of piperonyl butoxide and production process, applied in directions such as organic chemistry

Active Publication Date: 2006-03-29
吴江市曙光化工有限公司
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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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Examples

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Embodiment Construction

[0017] In the catalytic hydrogenation process, select a 1000-liter reactor, add 700 kilograms of sassafras oil, add 20-60 kilograms of catalyst lithium-nickel alloy powder, add 80-180 cubic meters of hydrogen (volume under one atmospheric pressure), and the reaction conditions are pressure 4-10 kg / cm2, temperature 30-100 DEG C, stirring speed 30-85 rev / min, reaction time controlled at 180-300 minutes, to obtain 90%-98% dihydrosafrol oil.

[0018] (2), in the chloromethylation operation, select the reactor of 5000 liters for use, 25-90 rev / min of stirring speed, add 700 kilograms of dihydrosafrol oil, add 2500-3500 kilograms of hydrochloric acid of concentration 33%, add more 200-300 kg of polyoxymethylene, 2 kg of tetraethylammonium bromide is added, the reaction temperature is 30-80 degrees, and the reaction time is 4-6 hours.

[0019] (3), in the etherification process, select the reactor of 3000 liters for use, the stirring speed is 40-80 rpm, add 400-500 kilograms of liqui...

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Abstract

A process for preparing piperonyl butoxide from sassafras oil includes such steps as catalytic reaction between sassafras oil and H2 under existance of LiNi alloy powder to obtain dihydrogenated sassafras oil, reacting on hydrochloric acid and polyformaldehyde under existance of ammonium tetraethyl bromide to obtain chloromethyl liquid, and reacting on the mixture of sodium hydroxide, monobutylether and ethyldiamine. Its advantages are high output rate and high purity.

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 o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D317/54
Inventor 丁裕强周明雄浦雪荣
Owner 吴江市曙光化工有限公司
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