Polymerization Inhibitors for Inhibiting the Polymerization of Vinyl Compounds

Abstract

A polymerization inhibitor for inhibiting the polymerization of vinyl compounds, the polymerization inhibitor is a composition, including component A and component B. Wherein: Component A is one or a mixture of two or more of piperidine oxygen free radicals, nitrophenol or benzoquinone; Component B is diethylene glycol monomethyl ether, diethylene glycol dimethyl ether or diethylene glycol One or more mixtures of monobutyl ethers; in parts by weight, component A:component B=1:(0.5-2.0). The polymerization inhibitor may also include solvent dimethylformamide, toluene or xylene. Compared with the prior art, the advantage of the present invention is that when the solution-like polymerization inhibitor is prepared with a solvent, the amount of solvent is reduced, the concentration of effective components is increased, and the consumption of solvent is reduced; component A and component B are compounded and used After that, it has better polymerization inhibition performance, so that the ideal polymerization inhibition effect can be obtained by adding less polymerization inhibitor to the vinyl compound system.

Description

technical field [0001] The invention relates to a polymerization inhibitor for inhibiting the polymerization of vinyl compounds, in particular to a polymerization inhibitor for inhibiting the polymerization of vinyl compounds whose polymerization inhibitor components include piperidine oxygen free radicals, nitrophenol and / or benzoquinone . Background technique [0002] Vinyl compounds are mostly organic monomers with a wide range of uses and are raw materials for the manufacture of many organic materials. The more important vinyl compounds such as isopentene, isoprene, butadiene, styrene, acrylonitrile and (methyl) Acrylic acid and its esters, etc. The common feature of vinyl compounds is that they contain very active vinyl groups. During storage, transportation or processing, they are affected by various factors such as high temperature, peroxides, iron ions, etc., and are prone to chain free radical polymerization to form polymers. , which not only leads to material los...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a polymerization inhibitor for inhibiting the polymerization of vinyl compounds, the polymerization inhibitor includes piperidine oxygen free radicals, nitrophenol and / or benzoquinone, by adding an auxiliary component to the polymerization inhibitor , to solve the technical problem that the solubility and dispersion performance of the polymerization inhibitor in the solvent and the vinyl compound system is not ideal