A kind of production method of diaminodiphenyl ether

A technology of diaminodiphenyl ether and its production method, which is applied in the fields of chemical instruments and methods, the preparation of amino hydroxyl compounds, and the preparation of organic compounds, etc., and can solve the requirements of heavy water treatment burden, long process heating and constant temperature time, and sublimation process technical conditions High-level problems, to achieve the effect of less residual salt impurities and sewage, simple cleaning and post-treatment, and low risk of safety and energy saving

CN107162919BActive Publication Date: 2019-03-19SHANDONG GUANSEN POLYMER MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-03-19

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Abstract

The invention discloses an energy-efficient and environment-friendly novel diaminodiphenyl ether production line. The production line comprises three parts including main material adding, production flow and product production and four links including condensation reaction, reduction reaction, refined purification and crushing and packaging. The production line is characterized in that a solvent and a catalyst which are low in toxicity, efficient and reusable and the sealed flow without air and impurities are used to prepare 4, 4'-diaminodiphenyl ether with the purity being not lower than 99.9%. Compared with the prior art, the production line is simple in structure, few in reaction links, low in time consumption, high in efficiency, high in solvent and catalyst repeated reaction rate, low in pollution discharge, low in toxicity, capable of saving energy, environmentally friendly, safe, low in cost, and the like.
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Description

1. Technical field

[0001] The invention relates to the production of chemical raw materials, in particular to a novel diaminodiphenyl ether production line with high efficiency, energy saving and environmental protection. 2. Background technology

[0002] As raw materials, additives, intermediates and crosslinking agents, diaminodiphenyl ether is more powerful and special for the production of electromechanical, electronics, plastics, resins, dyes, spices and other industries and products with special functions and properties, as well as research and development. All new products have and occupy a special and irreplaceable important position and role. Whether the above-mentioned purpose can be realized and achieved depends on whether high-purity fine products can be produced. The general flow process of prior art production diaminodiphenyl ether is: 1, condensation reaction Sodium p-nitrophenolate, p-nitrochlorobenzene, dimethylacetamide, sodium bisulfite, potassium chlorid...

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, the present invention is described in further detail as follows:

[0024] The high-efficiency, energy-saving and environmentally friendly new diaminodiphenyl ether production line of the present invention was developed and implemented during the "10000T / year recrystallization method production of high-purity diaminodiphenyl ether project" by Guansen Insulation Products Co., Ltd., Dongying City, Shandong Province.

[0025] like figure 1 Shown: A new type of diaminodiphenyl ether production line with high efficiency, energy saving and environmental protection to produce 4,4'-dinitrodiphenyl ether 4, 4,4'-diaminodiphenyl ether crude product 5, purity ≥ 99.9%4 , 4'-diaminodiphenyl ether 6 and product 7 are divided into four stages: condensation reaction, reduction reaction, refining and purification, and dry packaging. The main input material 1, process 2 and product 3 are summarized into three parts.

[0026] In the process ...