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Preparation method and application of cycloolefin copolymer

A technology of cycloolefin copolymer and cycloolefin, which is applied in the field of preparation of cycloolefin copolymer, can solve the problems of inability to realize addition copolymerization, low polymerization activity, low catalytic activity, etc., and achieve high monomer conversion rate and high Catalytic activity, the effect of high catalytic activity

Inactive Publication Date: 2021-08-31
WUXI ACRYL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Commonly used metallocene catalyst systems such as [{Me2C(fluo)(Cp)}ZrCl2] / MAO, [{Ph2C(fluo)(Cp)}ZrCl2] / MAO, [{Ph2C(ind)(Cp)}ZrCl2] / Catalysis of MAO, [{Me2C(fluo)(Cp)}HfCl2] / MAO, etc. Low activity, will not be able to achieve addition copolymerization or very low polymerization activity is not suitable for industrialization

Method used

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  • Preparation method and application of cycloolefin copolymer
  • Preparation method and application of cycloolefin copolymer
  • Preparation method and application of cycloolefin copolymer

Examples

Experimental program
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Effect test

Embodiment 1

[0061] This embodiment provides a kind of preparation method of cyclic olefin copolymer, concrete operation is as follows:

[0062] The polymerization reactor was pumped four times with high-purity nitrogen to discharge the air in the reactor, and then 3044g of toluene and cycloolefin monomer were added under the protection of nitrogen 160.2g (1.0mol), start stirring and heat up to 80°C, then add 99mg (0.5mmol) of triisobutylaluminum and 20.6mg (25μmol) of catalyst in sequence and organoboron compound B(C 6 f 5 ) 3 25.6 mg (50 μmol), and finally continue to feed ethylene gas to keep the ethylene pressure at 2.0 MPa, stop heating after 3 hours of reaction and cool to 25 °C. After the polymerization reaction was completed, it was terminated with acidified ethanol, and a white powdery solid was precipitated, which was washed with ethanol and suction-filtered to obtain cycloolefin copolymer A1, which was vacuum-dried at 70° C. for 8 hours.

Embodiment 2

[0064] This embodiment provides a kind of preparation method of cyclic olefin copolymer, concrete operation is as follows:

[0065] The polymerization reactor was pumped four times with high-purity nitrogen to discharge the air in the reactor, and then 1442g of toluene and cycloolefin monomer were added under the protection of nitrogen. 160.2g (1.0mol), start stirring and heat up to 80°C, then add 213mg (1.1mmol) of triisobutylaluminum and 44.4mg (53.8μmol) of catalyst in sequence and organoboron compound B(C 6 f 5 ) 3 55.1 mg (0.11 mmol), and finally continue to feed ethylene gas to keep the ethylene pressure at 0.5 MPa, stop heating after 10 hours of reaction and cool to 25 °C. After the polymerization reaction was completed, it was terminated with acidified ethanol, and a white powdery solid was precipitated, which was washed with ethanol and suction-filtered to obtain cycloolefin copolymer A2, which was vacuum-dried at 70° C. for 8 hours.

Embodiment 3

[0067] This embodiment provides a kind of preparation method of cyclic olefin copolymer, and the difference of specific operation and embodiment 1 is only not to add organoboron compound B (C 6 f 5 ) 3 , and other conditions remain the same. Cycloolefin copolymer A3 was obtained.

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Abstract

The invention relates to a preparation method and application of a cycloolefin copolymer, wherein the preparation method comprises the step: carrying out addition copolymerization reaction on a cycloolefin monomer and alpha-olefin under the catalysis of a catalyst and a promoter to obtain the cycloolefin copolymer. The selected catalytic system has high catalytic activity, and the cycloolefin monomer conversion rate is higher.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a preparation method and application of a cycloolefin copolymer. Background technique [0002] Cyclic olefin copolymers or cyclic olefin polymers (COC) are a class of high value-added thermoplastic engineering plastics formed by the copolymerization of cyclic olefins and α-olefins. COC materials have high transparency, extremely low dielectric constant, excellent water resistance, heat resistance, chemical stability and dimensional stability, and are widely used in the manufacture of optical lenses, automotive headlights, electronic and electrical components, medicine and food packaging materials. [0003] Commonly used metallocene catalyst systems such as [{Me2C(fluo)(Cp)}ZrCl2] / MAO, [{Ph2C(fluo)(Cp)}ZrCl2] / MAO, [{Ph2C(ind)(Cp)}ZrCl2] / Catalysis of MAO, [{Me2C(fluo)(Cp)}HfCl2] / MAO, etc. If the activity is low, the addition copolymerization cannot be realized or the po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F232/08C08F4/645C08F4/642C08F4/643C08F4/76
CPCC08F232/08C08F4/645C08F4/642C08F4/643C08F4/76
Inventor 施英张文泉朱萌陈琳琳黄佳斯
Owner WUXI ACRYL TECH