A kind of hydrogenation method of nitrile latex

Abstract

The invention relates to the hydrogenation field of butyronitrile latex, and discloses a hydrogenation method of butyronitrile latex. The method includes steps of (1), mixing butyronitrile latex, hydrogenation catalyst and ligand; (2), orderly performing first hydrogenation reaction and second hydrogenation reaction on the mixture obtained in step (1) in the presence of hydrogen, wherein the reaction temperature of the first hydrogenation reaction is 0-30 DEG C, and the reaction temperature of the second first hydrogenation reaction is 50-180 DEG C; (3), removing solvent in the reaction product obtained in step (2). The method is applied to perform hydrogenation on the butyronitrile latex, improve the hydrogenation activity of the hydrogenation catalyst and hydrogenation degree of the hydrogenation product; the hydrogenation product is free from obvious gel growth by comparing with the nitrile rubber before the butyronitrile latex before hydrogenation; moreover, the hydrogenation method is simple in operation, short in reaction time, easy to practice, and low in hydrogenation cost.

Description

Technical field [0001] The invention relates to the field of hydrogenation of nitrile latex, in particular to a hydrogenation method of nitrile latex. Background technique [0002] In recent years, with the continuous development of automobile manufacturing, mechanical processing, metallurgical sealing, engineering construction, petroleum industry and other industries, the demand for high-end polymers is also rising. Hydrogenated nitrile rubber not only has good wear resistance, low temperature resistance, oxidation resistance, ozone resistance, etc., but more importantly, hydrogenated nitrile rubber has excellent thermal stability. These properties make it occupy the high-end polymer One place, and the usage is increasing year by year. [0003] But for hydrogenated nitrile rubber, its high price severely restricts its promotion and application in various industries in my country. The main reasons for the long-term high price of hydrogenated nitrile rubber are as follows: (1) The...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the higher production cost in the nitrile latex hydrogenation process of existing method, be difficult for implementing (reaction temperature is high, energy consumption is high), hydrogenation catalyst reactivity is lower, the degree of hydrogenation of hydrogenation product To improve the defects of higher gel content in the product, provide a method with lower production cost, easier implementation (lower reaction temperature, simple operation, low energy consumption), high hydrogenation reaction activity of the hydrogenation catalyst, and high hydrogenation product The hydrogenation method of the nitrile latex that the degree of hydrogenation is significantly improved and the hydrogenation product has no obvious gel growth

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