Synthetic process for dodecenyl succinicanhydride based on controlling of content of initiator

Abstract

The invention discloses a synthetic process for dodecenyl succinicanhydride based on controlling of the content of an initiator. The synthetic process comprises the following steps: (a) firstly mixing polyisobutylene and maleic anhydride, and placing the mixture into a reactor; (b) adding a catalyst and the initiator into the reactor, controlling the content of the initiator accounting for 0.7% to 0.9% of the total content of monomers, and adjusting a pH value of a reaction system; (c) adjusting the temperature of the reaction system, and carrying out reaction at a hight temperature under stirring; and (d) after the completion of the reaction, carrying out distilling under a certain pressure so as to obtain a product, and carrying out cooling for a period of time so as to obtain a target product. According to the invention, dodecenyl succinicanhydride can be successfully synthesized; meanwhile, the synthetic process is simple; synthesizing efficiency is high; synthesizing cost is low; and through controlling of the content of the initiator in the process of synthesis, product conversion rate in the whole process is improved.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a synthesis process of dodecenylsuccinic anhydride based on controlling the content of an initiator. Background technique [0002] Properties: Colorless needle or granular crystal, soluble in ethanol, chloroform and carbon tetrachloride, slightly soluble in water and ether. It can be hydrolyzed into succinic acid with hot water, food processing aid stipulated in GB2760-90, synthesis of medicines, pesticides, esters and resins, and can also be used in the synthesis and analysis reagent of succinic acid. In the current process for preparing dodecenyl succinic anhydride, the process flow is not easy to implement, and the resulting product with dodecenyl succinic anhydride has low purity, low single-pass conversion rate of reactants, complex production process, and low production efficiency. And the cost is high, not suitable for large-scale production. ...

AI Technical Summary

Problems solved by technology

In the current process method for preparing dodecenyl succinic anhydride, the process flow is not easy to implement, and the resulting product with dodecenyl succinic anhydride has low purity, low single-pass conversion rate of reactants, complex production process, and low production efficiency. And the cost is high, not suitable for mass production