Preparation method of shock-resistant vinyl chloride copolymer resin

A technology of vinyl chloride copolymerization and impact resistance, applied in the field of vinyl chloride copolymer resin and its preparation, can solve the problems of wide molecular weight distribution, difficulty in obtaining particle size and porosity of resin, achieve high apparent density, eliminate large Particles and small particles, the effect of regular particle shape

Inactive Publication Date: 2016-08-17
广州飞粤新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to obtain controllable particle size and porosity for the resin prepared by emulsion polymerization, and the molecular weight distribution is wide.

Method used

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  • Preparation method of shock-resistant vinyl chloride copolymer resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Under the protection of inert gas, 6L of high-purity deionized water, 2688g of vinyl chloride monomer, 18g of sodium persulfate, 28g of sodium bicarbonate and 185g of hydroxypropyl methylcellulose (hydroxypropyl methylcellulose) were added to a 10L stainless steel autoclave. The content is 6.3 mol%), stir pre-dispersion at room temperature for 25 minutes, increase the temperature and control the reaction temperature to react for 30 minutes at 55°C, then add 148g vinylidene chloride monomer and 93g n-butyl acrylate monomer. After the monomer is added, Add 2g of sodium persulfate and control the reaction temperature at 55℃ to react for 20min, then add dropwise 60g of maleic anhydride monomer, increase the temperature and control the reaction temperature at 60℃, when the polymerization pressure drops by 0.2MPa, add 18g of n-dodecane And stop stirring, lower the reaction temperature, release the remaining gas in the reactor, discharge the material, filter, wash and dry, to ob...

Embodiment 2

[0034] Under the protection of inert gas, 6L of high-purity deionized water, 2412g of vinyl chloride monomer, 16g of sodium persulfate, 28g of sodium bicarbonate and 185g of hydroxypropyl methylcellulose (hydroxypropyl methylcellulose) were added to a 10L stainless steel autoclave. The content is 6.3 mol%), stir pre-dispersion at room temperature for 25 minutes, increase the temperature and control the reaction temperature to react for 30 minutes at 55°C, then add 296g vinylidene chloride monomer and 242g n-butyl acrylate monomer. After the monomer is added, Add 4g of sodium persulfate and control the reaction temperature at 55℃ to react for 20min, then add dropwise 60g of maleic anhydride monomer, increase the temperature and control the reaction temperature at 60℃, when the polymerization pressure drops by 0.2MPa, add 18g of n-dodecane And stop stirring, lower the reaction temperature, release the remaining gas in the reactor, discharge the material and undergo filtration, was...

Embodiment 3

[0038] Under the protection of inert gas, 6L of high purity deionized water, 2088g of vinyl chloride monomer, 14g of sodium persulfate, 28g of sodium bicarbonate and 185g of hydroxypropyl methylcellulose (hydroxypropyl methylcellulose) were added to a 10L stainless steel autoclave. The content is 6.3 mol%), stir pre-dispersion at room temperature for 25 min, increase the temperature and control the reaction temperature to react for 30 min at 55°C, then add 603 g vinylidene chloride monomer and 153 g n-butyl acrylate monomer. After the monomer is added, Add 6g of sodium persulfate and control the reaction temperature at 55°C to react for 20min, then add 146g of maleic anhydride monomer dropwise, increase the temperature and control the reaction temperature to 60°C, when the polymerization pressure drops by 0.2MPa, add 18g of n-dodecane And stop stirring, lower the reaction temperature, release the remaining gas in the reactor, discharge the material, filter, wash, and dry to obta...

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Abstract

The invention discloses a preparation method of shock-resistant vinyl chloride copolymer resin. According to the preparation method, a polymerization method is optimized by optimizing polymerization reaction influencing factors such as the polymeric monomer formula, the dispersant formula, the polymerization reaction temperature and time and the adding mode. A product processed from the vinyl chloride copolymer resin prepared through the preparation method has excellent processability, barrier performance, flame retardance and shock resistance, is widely applied to the fields of buildings, packages, automobiles, the food industry and the like and has good market prospects.

Description

[0001] The present invention is a divisional application of application number: 2014108369832, application date: 2014-12-29, title of invention: an impact-resistant vinyl chloride copolymer resin and its preparation method. Technical field [0002] The invention relates to a vinyl chloride copolymer resin and a preparation method thereof, in particular to an impact-resistant copolymer resin of vinyl chloride, vinylidene chloride, acrylate and maleic anhydride and a preparation method thereof. Background technique [0003] Although polyvinyl chloride had been prepared in the laboratory as early as 1835, it has not broken through its processing application due to its poor thermal stability. By the end of the 1920s, there were two breakthroughs: one was plasticization. In 1933, Goodrich Company issued a patent for adding plasticizers; the other was copolymerization, which improved the structure of PVC and was beneficial to processing. At present, there are no less than dozens of type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F214/06C08F214/08C08F220/18C08F222/06C08F2/38C08F2/20
CPCC08F2/20C08F2/38C08F214/06C08F214/08C08F220/1808C08F222/06C08F220/1804C08F220/1802
Inventor 周大胜
Owner 广州飞粤新材料有限公司
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