Preparation method of o-ethylaniline

A technology of o-ethylaniline and aniline, which is applied in the field of preparation of o-ethylaniline, can solve problems such as control, inconvenient quality of o-ethylaniline finished products, and inconvenient o-ethylaniline laboratory detection, so as to prevent it from entering the market and facilitate The effect of control
CN108929232AInactive Publication Date: 2018-12-04无锡艾科隆环境建设有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
无锡艾科隆环境建设有限公司
Publication Date
2018-12-04
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention discloses a preparation method of o-ethylaniline. The preparation method comprises the following steps: S1, preparing raw materials: weighing raw material aniline and raw material ethylene by using a weighing instrument according to a proportion, putting the aniline into a container for storage, weighing a catalyst by using the weighing instrument according to a proportion, putting the catalyst into a container for storage and for standby use; S2, carrying out a heating reaction: injecting the raw material aniline and catalyst weighed in the S1 into reaction equipment, heating the interior of the reaction equipment to a temperature required by the reaction, and injecting the raw material ethylene into the reaction equipment, and carrying out a reaction, and S3, carrying out cooling when the reaction in the S2 is finished. According to the invention, assay detection is carried out on the prepared o-ethylaniline, the data of the assay detection are compared with qualified data in time, and the quality of the o-ethylaniline finished product can be accurately acquired, so that the quality of the o-ethylaniline can be controlled conveniently, and poor-quality o-ethylaniline can be prevented from flowing into the market.
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Description

technical field

[0001] The invention relates to the technical field of o-ethylaniline production, in particular to a preparation method of o-ethylaniline. Background technique

[0002] O-ethylaniline is a yellow or orange liquid, insoluble in water, slightly soluble in chloroform, soluble in ethanol, toluene, ether, etc., after N-alkylation reaction between o-ethylaniline and 2-bromopropane, it can be obtained Grassamine and o-ethylaniline are also the raw materials of imidachlor and the insecticide ethyldimeform. In the dye industry, this product can be used to make vulcanized sunfast blue. It is an important pesticide, dye and pharmaceutical intermediate. It is the key to the synthesis of new insecticides.

[0003] The patent document of retrieval authorized notification number CN103333072B discloses a preparation method of o-ethylaniline, the method is to add a metal catalyst in the hydrogenation reactor, replace it with nitrogen, and wait until the air in the reactor sy...

Claims

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