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Preparation method of olefin-acrylate copolymer

A technology of acrylate and copolymer, applied in the field of polymer synthesis, can solve the problems of increasing the danger of chemical production, limiting the accuracy of feeding amount, etc.

Inactive Publication Date: 2017-12-22
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

DuPont uses boron trifluoride (BF 3 ) as a catalyst to achieve high-efficiency copolymerization of acrylate with ethylene and propylene (US 4065613, US 3925326 and US 3956248), but the gas phase feeding method of the catalyst limits the accuracy of the feeding amount and increases the risk of chemical production

Method used

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  • Preparation method of olefin-acrylate copolymer
  • Preparation method of olefin-acrylate copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]Methyl acrylate 5mL, 1-octene 5mL, aluminum trichloride 3.68g, azobisisoheptanonitrile 0.1g, dichloromethane 50mL, react in a water bath at 40°C for 7h under the condition of sealing and stirring to obtain a viscous polymer solution , Pour the solution into methanol hydrochloric acid solution to obtain a polymer, dissolve the polymer in acetone and precipitate twice with methanol hydrochloric acid solution to obtain a purified polymer.

Embodiment 2

[0028] Methyl methacrylate 5 mL, 1-hexene 5 mL, zinc chloride 0.64 g, benzoyl peroxide 0.1 g, methyl acetate 10 mL, react in a water bath at 80°C for 3 h under sealed conditions with stirring to obtain viscous polymerization The polymer solution was poured into the hydrochloric acid methanol solution to obtain a polymer, which was dissolved in acetone and precipitated twice with hydrochloric acid methanol solution to obtain a purified polymer.

Embodiment 3

[0030] 5 mL of butyl acrylate, 5 mL of 1-hexene, 0.21 g of ferric chloride, 0.1 g of benzoyl peroxide, and 20 mL of xylene, react in a water bath at 80°C for 3 h under sealed conditions with stirring to obtain a viscous polymer solution , Pour the solution into methanol hydrochloric acid solution to obtain a polymer, dissolve the polymer in acetone and precipitate twice with methanol hydrochloric acid solution to obtain a purified polymer.

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Abstract

The invention discloses a method for preparing an olefin-acrylate copolymer by catalyzing copolymerization between an olefin monomer and an acrylate monomer with a Lewis acid catalyst. In the copolymer, molar content of a non-polar unit (olefin unit) is 0-50% and molar content of a polar unit (acrylate unit) is 50-100%; the number-average molecular weight of the copolymer is 20,000-500,000. In addition, a bifunctional monomer, as a crosslinking point for further processing of the polymer, can be introduced to the olefin-acrylate copolymerization system.

Description

technical field [0001] The invention relates to a method for realizing the copolymerization of olefin and acrylate, belonging to the field of polymer synthesis. Background technique [0002] Polyolefins, such as polyethylene and polypropylene, have excellent heat resistance and weather resistance due to their saturated hydrocarbon structure, but due to the presence of non-polar groups in the molecular chain, they lead to oil resistance, adhesion and blending with other components Performance is poor. Copolymerization modification with polar monomers is an effective method to improve the application properties of polyolefins. Acrylates are ideal comonomers with moderate polarity. However, acrylates are suitable for atmospheric free radical polymerization, while a-olefins (including ethylene) are suitable for high pressure free radical polymerization or Ziegler-Natta coordination catalyzed polymerization. The difference in the polymerization mechanism of the two types of mo...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F210/14C08F220/18C08F220/32C08F216/14C08F218/04C08F2/06C08F4/14C08F4/10C08F4/26
CPCC08F2/06C08F4/10C08F4/14C08F4/26C08F210/14C08F220/14C08F220/18C08F220/1804C08F220/325C08F216/1416
Inventor 淡宜肖长发江龙
Owner SICHUAN UNIV
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