Preparation method of electronic grade propylene glycol monomethyl ether and product obtained by preparation method

A propylene glycol monomethyl ether, electronic grade technology, applied in the field of preparation of electronic grade propylene glycol monomethyl ether, can solve the problems of high catalyst activity and selectivity, low catalyst activity and selectivity, and high product purity
CN111807934AActive Publication Date: 2020-10-23HAIKE GRP RES INST OF INNOVATION & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HAIKE GRP RES INST OF INNOVATION & TECH
Publication Date
2020-10-23

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Abstract

The invention discloses a preparation method of electronic grade propylene glycol monomethyl ether and a product obtained by the preparation method, and belongs to the technical field of preparation of fine chemicals. The method comprises the following steps of: 1) mixing methanol, propylene oxide and a basic ionic liquid catalyst, and carrying out reaction in a micro-channel reactor to obtain a reaction solution; 2) removing light components from the reaction solution to obtain a light component removed reaction solution; and 3) evaporating the light component removed reaction solution obtained in step 2), and performing negative pressure rectification on the obtained steam to obtain the electronic grade propylene glycol monomethyl ether. The preparation method of the electronic grade propylene glycol monomethyl ether provided by the invention are mild in reaction conditions, the purity of the prepared product is high, the yield is high, and the activity and selectivity of the catalyst are high.
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Description

technical field

[0001] The invention relates to the technical field of preparation of fine chemicals, in particular to a method for preparing electronic-grade propylene glycol monomethyl ether and a product obtained therefrom. Background technique

[0002] Propylene glycol monomethyl ether (PM) is a solvent with excellent performance and low toxicity. It has the characteristics of strong solvency, low volatility and high flash point. Electronic grade propylene glycol monomethyl ether is mainly used in TFT-LCD photoresist diluent, photoresist remover, stripper, IC cleaning agent, photoresist removal buffer, etching process, etc. in the production process of liquid crystal display and photoresist And other chemical products that require special specifications. At the same time, it is widely used as a solvent for the production of electronic materials. The molecular structure and physicochemical properties of PM are similar to glycol ethers, and it is considered to be an idea...

Claims

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