Rectification polymerization inhibitor of aromatic olefin monomer and preparation method and application method thereof

Abstract

The invention relates to a rectification polymerization inhibitor of an aromatic olefin monomer and a preparation method and application method thereof. The rectification polymerization inhibitor is prepared from 10-40 parts by weight of an N-substituted alkylhydroxylamine compound, 1-20 parts by weight of non-ionic polyacrylamide and 100 parts by weight of an alkyl amide compound. The preparationmethod improves polymerization inhibition efficiency, reduces the polymerization rate of the aromatic olefin monomer in the production process, improves the product yield and provides the function ofwetting for the polymerization inhibitor, so that the polymerization inhibitor acts as a polymerization inhibitor and simultaneously and timely wets and disperses the sticking substances on the device wall or filler surface, and solves the problem that the existing polymerization inhibitor only comprises a retarder and a true polymerization inhibitor and the polymerization inhibitor can be separated along with temperature change so that the polymerization inhibiting effects are poor and the polymer blocks the filler and pipe. The rectification polymerization inhibitor has small toxicity and good polymerization inhibition effects, is not easy to precipitate at a low temperature, and can wet and disperse the sticking substances, so as to improve the distillation yield of the aromatic olefinmonomer, reduce pollution and eliminate safety hazards.

Description

technical field [0001] The invention relates to a rectification polymerization inhibitor for aromatic olefin monomers, a preparation method and an application method thereof. Background technique [0002] Aromatic olefin monomers are chemically active. For example, styrene is an important polymerizable monomer, which can be polymerized by itself or with other monomers, and is widely used in the fields of synthetic polymer materials, coatings, and medicine. Styrene can undergo slow thermally activated polymerization at ambient temperature, and the higher the temperature, the faster the polymerization rate. In order to reduce the polymerization loss during the rectification of styrene and ensure the normal operation of the rectification system, a polymerization inhibitor must be added during the rectification. [0003] Since the industrial production of styrene monomer, people have continuously developed styrene distillation inhibitors to reduce the toxicity of the inhibitor,...

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Problems solved by technology

[0009] The object of the present invention is to provide a kind of rectification polymerization inhibitor of aromatic olefin monomer, preparation method and application method thereof, improve polymerization inhibition efficiency, reduce the polymerization rate of aromatic olefin monomer in the production process, thereby improve product yield; Simultaneously Endow the polymerization inhibitor with the function of wetting, so that the polymerization inhibitor can play the role of polymerization inhibitor and at the same time wet and disperse the adhesives adhering to the wall or the surface of the filler in time, and solve the problem that can only be achieved by retarders and real inhibitors in the prior art. Polymerization agent compounding, polymerization inhibitor is easy to precipitate with temperature changes, poor polymerization inhibition effect, polymer plugging fillers and pipeline defects, it is a kind of product with low toxicity, good polymerization inhibition effect, not easy to precipitate at low temperature, and can moisten A multifunctional polymerization inhibitor for wet dispersion binders to increase the rectification yield of aromatic olefin monomers, reduce pollution and eliminate potential safety hazards

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