Vinyl chloride polymerization terminator, its preparation method and application

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 effects of improving aging whiteness, high termination efficiency, and high whiteness

Active Publication Date: 2022-01-07
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • 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, its preparation method and application
  • Vinyl chloride polymerization terminator, its preparation method and application
  • Vinyl chloride polymerization terminator, its preparation method and application

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 in particular relates to a vinyl chloride polymerization terminator, its preparation method and application. The raw materials include the following parts by weight: 10-20 parts of diethylhydroxylamine, 30-40 parts of pentaerythritol tetrakis (3-lauryl thiopropionate), octadecyl-3-(3,5-di-tert-butyl 10-20 parts of 4-hydroxyphenyl) propionate, 50-60 parts of deionized water, 1-3 parts of dispersant and 0.1-0.5 parts of emulsifier. Each component of the invention has a synergistic effect, which can not only have a good vinyl chloride polymerization termination effect, but also effectively improve the aging whiteness of the resin, and has high termination efficiency, high whiteness of PVC resin, and yellow PVC transparent products. Advantages of low index. The invention also provides a preparation method thereof, which ensures that the composite terminator emulsion is stable and uniform among batches when metered and added, and has good fluidity in the 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 Patents(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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