Vinyl chloride polymerization terminator as well as preparation method and application thereof

A vinyl chloride polymerization and terminator technology, which is applied in the field of resin synthesis, can solve the problems of poisonous phenolic antioxidants, etc., and achieve the effect of improving aging whiteness, high whiteness, and good fluidity

Active Publication Date: 2020-02-07
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The formula used is different from the patent of this invention, and the phenolic antioxidant used in this invention is poisonous

Method used

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  • Vinyl chloride polymerization terminator as well as preparation method and application thereof
  • Vinyl chloride polymerization terminator as well as preparation method and application thereof
  • Vinyl chloride polymerization terminator as well as preparation method and application thereof

Examples

Experimental program
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Embodiment 1-5

[0021] A vinyl chloride polymerization terminator, the components and contents of Examples 1-5 are shown in Table 1.

[0022] Each material component was weighed according to the proportioning in Table 1. Mix 30~40g of pentaerythritol tetrakis(3-lauryl thiopropionate), 10~20g of octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 0.1~ Put 0.5g of sorbitan trioleic acid and 50-60g of deionized water into a 250mL glass beaker, stir and heat to 55°C-60°C, keep it for 10 minutes, then cool down to room temperature 23±2°C. Then add 10-20g diethylhydroxylamine to the glass beaker, 1-3g polyvinyl alcohol () aqueous solution with a degree of polymerization of 350, a degree of alcoholysis of 80%, and a concentration of 5%, stir well and pour into high-speed shear emulsification After emulsifying in the machine at 2000r / min for 30min, a vinyl chloride polymerization terminator in which each component exists uniformly and stably in the emulsion is obtained.

[0023] Table 1

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Abstract

The invention belongs to the field of resin synthesis, and particularly relates to a vinyl chloride polymerization terminator as well as a preparation method and application thereof. The terminator comprises the following raw materials in parts by weight: 10-20 parts of diethyl hydroxylamine, 30-40 parts of pentaerythritol tetra(3-dodecylthiopropionate), 10-20 parts of octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 50-60 parts of deionized water, 1-3 parts of a dispersing agent and 0.1-0.5 part of an emulsifying agent. All the components have a synergistic effect, so that a good vinyl chloride polymerization termination effect can be achieved, the aging whiteness of the resin can be effectively improved, and the vinyl chloride polymerization terminator has the advantages that the termination efficiency is high, PVC (vinyl chloride) resin has high whiteness and a PVC transparent product has low yellow indexes. The invention further provides a preparation method of the vinylchloride polymerization terminator. The preparation method ensures that the emulsion of the composite terminator is stable and uniform in each batch when being metered and added, and has favorable flowability in a process pipeline.

Description

technical field [0001] The invention belongs to the field of resin synthesis, and in particular relates to a vinyl chloride polymerization terminator, its preparation method and application. 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 of both chain termination and improving th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F14/06C08F2/38
CPCC08F14/06C08F2/38
Inventor 王晶刘浩张磊张新华裴小静王秀丽李静刘容德王晓敏高磊
Owner CHINA PETROLEUM & CHEM CORP
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