Water-soluble styrene polymerization inhibitor

Abstract

The invention discloses a water-soluble styrene polymerization inhibitor, comprising a free radical or a derivative thereof, an amine substance, an anti-oxidant, a reducing agent, a dispersant and water in a mass ratio of 40-90: 0-50: 0-10: 0-15: 0-10, wherein the ratio of the total mass of the free radical or the derivative thereof, the amine substance, the anti-oxidant, the reducing agent and the dispersant to the water is 1: 1-9, and the amine substance is one selected from the group consisting of diethylhydroxylamine, diisopropylhydroxylamine, hydroxylamine hydrochloride, morpholine hydroxylamine, N-isopropylhydroxylamine, N,N-dialkylhydroxylamine and N,N-dihydroxyalkylhydroxylamine or a mixture of more than two selected from the group in any ratio. The polymerization inhibitor provided by the invention has the advantages of low consumption, high efficiency, reduction in usage of organic solvents posing harm to the environment and human bodies, high polymerization inhibition efficiency and a low addition amount.

Description

technical field [0001] The invention relates to a water-soluble styrene polymerization inhibitor, which belongs to the technical field of petrochemical industry. Background technique [0002] Styrene (SM) is one of the basic products of petrochemical industry and the main raw material for the production of styrene-butadiene rubber (SBR) and styrene-butadiene latex (including SBR latex and S / B copolymer latex). With the vigorous development of rubber downstream related industries, especially the rapid development of the automobile tire industry, the demand for styrene in my country has increased year by year. [0003] Styrene is one of the few substances with thermal self-polymerization properties. It can self-polymerize slowly at room temperature, and the increase in temperature can accelerate the polymerization reaction. However, 90% of the styrene production facilities in the world adopt the gas-phase catalytic dehydrogenation process of ethylbenzene. The dehydrogenation ...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned inventions basically use organic solvents or co-solvents to dissolve the effective components of the polymerization inhibitor, but there are few studies at home and abroad on whether solvents have an impact on the polymerization of styrene; some patents use ethylbenzene as a solvent. If it is not purified, it itself contains certain It is impossible to determine whether there is an interaction between the inhibitors. If ethylbenzene is purified and used as a solvent, a certain amount of effective substances will be consumed during sales, transportation, and storage of the inhibitor, which will affect its performance. ; While the use of organic solvents increases production costs, it is also likely to cause harm to operators and the environment

[0006] The solvents contained in the above-mentioned invention examples are easy to pollute the environment, and the polymerization inhibition efficiency is low, which can easily cause waste of resources and secondary pollution