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An aqueous emulsion type terminator for PVC resin and vinyl chloride-vinyl acetate copolymer and a preparation method thereof

A technology of PVC resin and chloroacetate resin, applied in the field of terminator and its preparation, can solve problems such as inconvenience in use, and achieve the effects of wide application range, high resin aging whiteness, and simple preparation process

Active Publication Date: 2019-08-06
江苏长丰有机硅有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This terminator can be used for emulsion polymerization and suspension polymerization of vinyl chloride. Although it is most effective for suspension polymerization, it is inconvenient to use

Method used

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  • An aqueous emulsion type terminator for PVC resin and vinyl chloride-vinyl acetate copolymer and a preparation method thereof
  • An aqueous emulsion type terminator for PVC resin and vinyl chloride-vinyl acetate copolymer and a preparation method thereof
  • An aqueous emulsion type terminator for PVC resin and vinyl chloride-vinyl acetate copolymer and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 12 parts of antioxidant 1010, 4 parts of antioxidant 168, 12 parts of zinc stearate, 8 parts of polyether-modified silicone oil with a hydroxyl value of 20-80 mgKOH / g, diisooctyl phthalate or monophosphite Add 3 parts of benzenediisooctyl ester into the reaction kettle, slowly raise the temperature to 50°C, keep stirring to dissolve all the solid components, and then add 4-hydroxy-2,2,6,6-tetramethylpiperidine-1- 15 parts of oxygen free radicals, continue to stir to form a uniform solution, then add 1.5 parts of methyl tin, 5 parts of sorbitan stearate, 4 parts of fatty alcohol polyoxyethylene ether, and 5 parts of polyoxyethylene sorbitan fatty acid ester Continue to stir for 10 min, add the remaining amount of deionized water, and then stir rapidly for 1 h. Finally, it is emulsified by an emulsification pump to obtain product 1#.

Embodiment 2

[0024] 12 parts of antioxidant 1010, 4 parts of antioxidant 264, 8 parts of zinc stearate, 5 parts of barium stearate, 10 parts of polyether modified silicone oil with a hydroxyl value of 20-80 mgKOH / g, phthalic acid di Add 4 parts of isooctyl or phenylenedi-isooctyl phosphite into the reaction kettle, slowly raise the temperature to 80°C, keep warm and stir to dissolve all the solid components, and then add 4-hydroxy-2,2,6,6-tetra 12 parts of methylpiperidine-1-oxyl radicals, continue to stir to form a uniform solution, then add 2 parts of methyl tin, 3 parts of sorbitan stearate, 5 parts of fatty alcohol polyoxyethylene ether and polyoxyethylene sorbitol 3 parts of alcoholic anhydride fatty acid ester continued to stir for 5 minutes, added the remaining amount of deionized water, and then stirred rapidly for 0.5 hours. Finally, it is emulsified by an emulsification pump to obtain product 2#.

Embodiment 3

[0026] 15 parts of antioxidant 1010, 2 parts of antioxidant 168, 16 parts of calcium stearate, 4 parts of polyether-modified silicone oil with a hydroxyl value of 20-80 mgKOH / g, diisooctyl phthalate or monophosphite Add 5 parts of benzenediisooctyl ester into the reaction kettle, slowly raise the temperature to 80°C, keep stirring to dissolve all the solid components, and then add 4-hydroxy-2,2,6,6-tetramethylpiperidine-1- 18 parts of oxygen free radicals, continue to stir to form a uniform solution, then add 0.5 parts of methyl tin, 1 part of sorbitan stearate, 7 parts of fatty alcohol polyoxyethylene ether, and 1 part of polyoxyethylene sorbitan fatty acid ester Continue to stir for 10 min, add the remaining amount of deionized water, and then stir rapidly for 1 h. Finally, it is emulsified by an emulsification pump to obtain product 3#.

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Abstract

An aqueous emulsion type terminator for PVC resin and vinyl chloride-vinyl acetate copolymer is provided. The terminator is good in emulsion stability and high in terminating efficiency, and producedresin has high ageing whiteness that can be 88 or above. The terminator includes, based on 100 parts by mass, 3-20 parts of 4-hydroxy-2,2,6,6-tetramethylpiperidinooxy, 0.2-23 parts of a composite antioxidant, 1.5-24 parts of a composite emulsifier, 0.2-5 parts of a dispersant and 1.1-23 parts of a thermal stabilizer, with the balance being deionized water.

Description

technical field [0001] The invention relates to a terminator and a preparation method thereof, more specifically to a water emulsion type PVC resin and vinyl chloride resin terminator and a preparation method thereof. Background technique [0002] China is the world's largest producer of polyvinyl chloride (PVC), with a production capacity of more than 20 million tons of PVC per year, and suspension polymerization is the most important production process. In the later stage of the polymerization reaction, the monomer concentration is low, and the probability of termination reaction increases, resulting in low relative molecular weight and increased number of branched chain polymers, and the performance of the polymer is reduced. The current solution is to add a terminator to terminate the reaction immediately when the reaction pressure drops to 0.10-0.15MPa. Vinyl chloride resin is a copolymer of vinyl chloride and vinyl acetate, referred to as vinyl chloride resin. Vinyl ...

Claims

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Application Information

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IPC IPC(8): C08F2/42C08F14/06C08F214/06C08F218/08
CPCC08F2/42C08F14/06C08F214/06C08F218/08
Inventor 吴开林刘荣张骥红
Owner 江苏长丰有机硅有限公司
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