Vinyl chloride polymerization terminator with good low-temperature fluidity, and preparation method and application thereof

Abstract

The invention belongs to the field of resin synthesis, and particularly relates to a vinyl chloride polymerization terminator with good low-temperature fluidity, and a preparation method and application thereof. The terminator comprises the following ingredients of, by weight, 20 parts to 30 parts of diethylhydroxylamine, 30 parts to 40 parts of ethylene glycol diglycidyl ether, 20 parts to 30 parts of diphenyl isodecyl phosphite, 40 parts to 50 parts of deionized water, and 0.5 part to 2 parts of a dispersing agent, wherein the dispersing agent is a polyvinyl alcohol aqueous solution with thedegree of polymerization ranging from 300 to 400, the alcoholysis degree ranging from 50% to 60%, and the concentration of 5%. The vinyl chloride polymerization terminator with good low-temperature fluidity is good in low-temperature fluidity, thereby being suitable for regions or seasons with the low temperature, and the composite terminator can stay uniform and stable without emulsifiers. The invention further provides the preparation method and the application of the terminator. The terminator not only has the good vinyl chloride polymerization termination effect while improving the thermal stability of resin, but also has the good low-temperature fluidity so that can be used at cold regions or cold seasons.

Description

technical field [0001] The invention belongs to the field of resin synthesis, and in particular relates to a vinyl chloride polymerization terminator with good low-temperature fluidity, a preparation method and application thereof. Background technique [0002] The terminator stops or significantly reduces the reaction rate by combining with the residual initiator active free radicals and the residual initiator to form an inactive compound. It can effectively protect the polymer from being heated in the process after stripping. Oxygen aging damage. The terminator is added when the polymerization reaction reaches the set end point. The commonly used terminators include bisphenol A, acetone thiosemicarbazone, BHT and so on. A single terminator is often unable to meet the requirements of efficiently terminating the polymerization reaction and improving the thermal stability of the resin at the same time. The terminator is developing towards the functional composite direction o...

AI Technical Summary

Problems solved by technology

2. In this patent, ethylene glycol diglycidyl ether is added at the beginning of polymerization. The ethylene glycol diglycidyl ether and diethylhydroxylamine in this patent are first compounded into a compound terminator. In this patent, ethylene glycol diglycidyl ether is added at the beginning of polymerization. Diol diglycidyl ether will consume the polymerization initiator and reduce the polymerization reaction rate

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