Method for synthesizing bis-isobutyronitrile hydrazine

Abstract

The invention relates to a method for synthesizing bis-isobutyronitrile hydrazine. Acetone cyanohydrins and hydrazine hydrate are used as raw materials to carry out condensation reaction by the action of phase transfer catalyst quaternary ammonium compound. The phase transfer catalyst not only promotes the reaction speed and enhances the synthesis yield to 98.23 percent to 98.60 percent, but also reduces the addition of water in the reaction, thus improving the productivity greatly and reducing the production cost as the phase transfer catalyst also takes effects of dispersing. A product has stable quality, and the purity of the product is more than 98 percent. Therefore, the method for synthesizing the bis-isobutyronitrile hydrazine is a method fit for industrialized production.

Description

technical field

[0001] The present invention relates to the synthetic method of organic compound diisobutyronitrile hydrazine. Background technique

[0002] Diisobutyronitrile hydrazine belongs to an organic chemical product, mainly used in the production of initiator azobisisobutyronitrile.

[0003] About the synthetic method of diisobutyronitrile hydrazine, it is mainly discussed in the preparation technology of azobisisobutyronitrile. In the Chinese patent CN1785963 "Preparation method of azobisisobutyronitrile" published in June 2006, it involves the synthesis of diisobutyronitrile hydrazine as an intermediate product. The method is to add diisobutyronitrile mother liquid water (need to adjust the pH value to 4-5) produced in the previous reaction to acetone cyanohydrin, replace the clear water that should be added during the reaction, and then carry out condensation reaction with hydrazine hydrate. The purpose is to use saturated diisobutyronitrile hydrazine in the mo...

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