Method for producing n-vinyl pyrrolidone

Abstract

The invention discloses a method for producing n-vinyl pyrrolidone (NVP). With the adoption of diethylene glycol dimethyl ether as a catalyst, not only are the effects of a convectional catalyst of reducing the reaction temperature, shortening the reaction time, improving the conversion rate, inhibiting the side reaction and improving the product yield achieved, but also the cost for producing NVP is effectively lowered because the price of diethylene glycol dimethyl ether is lower than the conventional catalyst, so that the method is more beneficial for industrial production.

Description

technical field

[0001] The invention relates to a method for producing vinylpyrrolidone, which belongs to the fields of fine chemical industry and chemical pharmacy. Background technique

[0002] With the continuous progress and development of science and technology, various emerging industries have greatly promoted the related varieties of PVP series products in recent years. In the future, PVP series products will be more widely used in new fields, such as new pharmaceutical products fields, environmental protection water treatment fields, biosensors, new special coatings fields, brewing and beverage fields, energy mining fields, printing industry applications and breeding fields, etc., will have a large demand support for PVP products, and the market demand will increase in the next few years. With a growth rate of 10%, the market prospect is broad. The amount of monomer vinylpyrrolidone (NVP) used as a synthetic PVP product is also correspondingly increasing significant...

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