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Thermally stable vinyl chloride polymerization terminator, its preparation method and application

A technology of vinyl chloride polymerization and terminator, applied in the field of resin synthesis, can solve the problem of toxicity of phenolic antioxidants, and achieve the effects of improving thermal stability, good vinyl chloride polymerization termination effect, and large specific surface area

Active Publication Date: 2021-08-10
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The additives used in this patent are different from those in the patent of the present invention. The phenolic antioxidant used in this invention is poisonous

Method used

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  • Thermally stable vinyl chloride polymerization terminator, its preparation method and application
  • Thermally stable vinyl chloride polymerization terminator, its preparation method and application
  • Thermally stable vinyl chloride polymerization terminator, its preparation method and application

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Embodiment 1-5

[0023] A thermally stable vinyl chloride polymerization terminator, the components and contents of Examples 1-5 are shown in Table 1.

[0024] Each material component was weighed according to the proportioning in Table 1. Put 30-40g hydrotalcite, 20-30g bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite, 0.1-0.5g polyoxyethylene polyol alkyl ester, 60-70g deionized water into Stir in the glass beaker for 10 minutes, then add 1~3g hydroxypropyl methylcellulose, 20~30g N-isopropylhydroxylamine, stir well, pour it into a high-speed shear emulsifier and emulsify at 4000r / min for 50min A heat-stable vinyl chloride composite terminator in which each component exists uniformly and stably in the emulsion is obtained.

[0025] Table 1

[0026]

[0027] Note: the MgO / Al of the hydrotalcite used in the embodiment 2 o 3 =3.5, the average particle size is about 20nm, and the specific surface area is 16m 2 / g.

[0028] The heat-stable vinyl chloride polymerization terminator ...

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Abstract

The invention belongs to the field of resin synthesis, and in particular relates to a heat-stable vinyl chloride polymerization terminator, its preparation method and application. Including the following raw materials: N-isopropyl hydroxylamine, hydrotalcite, bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite, deionized water, dispersant and emulsifier; wherein: hydrotalcite is: MgO / Al 2 o 3 =3.0~4.0, the average particle size is 10~20nm, and the specific surface area is 15~20m 2 / g. The terminator of the present invention has good vinyl chloride polymerization termination effect, effectively reduces the damage of residual initiator to the thermal stability of PVC resin, can improve the thermal stability of PVC resin, prolong the thermal stability time of resin, and does not affect the transparency of PVC products properties, the present invention also provides its preparation method and application.

Description

technical field [0001] The invention belongs to the field of resin synthesis, and in particular relates to a heat-stable 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F114/06C08F2/38C08L27/06C08K3/26C08K5/526
CPCC08F2/38C08F114/06C08K3/26C08K5/526C08L2201/08C08L27/06
Inventor 刘浩张磊王晶张新华裴小静王秀丽刘容德王晓敏高磊
Owner CHINA PETROLEUM & CHEM CORP
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