Cycloolefin copolymer with polar group and preparation method thereof

A cyclic olefin copolymer and polar group technology, applied in the field of C08F, can solve the problems of lack of physical properties of cyclic olefin copolymer, loss of performance advantages of cyclic olefin copolymer, insufficient comonomer insertion rate, etc., to avoid crystallinity. Effects of segment generation, compatibility promotion, and enhancement of optical properties

Pending Publication Date: 2022-04-26
广东新华粤石化集团股份公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above catalysts have low polymerization activity, low polymer molecular weight, and insufficient comonomer insertion rate, resulting in the lack of necessary physical properties of the obtained cycloolefin copolymer, and the application is limited.
[0005] Chinese patent CN202010066897 discloses a method for preparing a copolymer containing polar norbornene to obtain a high-molecular-weight polymer. However, the copolymer prepared by this method has a low glass transition temperature and is elastic at room temperature. It maintains a high hardness structure above room temperature, so its application is greatly limited
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Method used

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  • Cycloolefin copolymer with polar group and preparation method thereof
  • Cycloolefin copolymer with polar group and preparation method thereof
  • Cycloolefin copolymer with polar group and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0066] Example 1 provides a method for preparing a cyclic olefin copolymer and the resulting copolymer thereof, comprising: adding a solvent toluene to a 500mL reactor with a nitrogen atmosphere, and a certain amount of hypoglycellic alkene monomer (b) and 5-hydroxy-2-hypoglycellene monomer (c), so that the concentrations of monomers (b) and (c) are 2.0mol / L and 0.5mol / L, respectively, and maintain a total volume of 200mL. Turn on agitation, set the speed to 500 r / min, then pass into the ethylene monomer (a), and increase the pressure to 0.5 MPa, equilibrate at 70 °C for 30 min. Then, add 2 mL of a 5 μmol-containing catalyst (Ar., 2017). 1 and Ar 2 C respectively 6 H 5 、2-{(2’,6’-(CH 3 O) 2 (C 6 H 3 )}C 6 H 4 ，R 10 、R 11 Ch 3 , H) of the dichloromethane solution, the polymerization reaction begins, and the system temperature and pressure are kept unchanged during the polymerization process. After the reaction is carried out for 1 hour, the stirring is stopped, the reactor temp...

Example Embodiment

[0077] Example 15-18 provides a preparation method of cyclic olefin copolymer and the copolymer prepared thereof, the polymerization conditions are monomer a is ethylene; monomer b is hypoglycemic alkene, concentration: 2mol / L; monomer c is 5-hydroxy-2-hypoglycogenic flakeene (Example 16-18), concentration: 0.5mol / L; monomer d, concentration of 0.2mol / L (Example 16-18); polymerization temperature: 70 °C, Polymerization pressure: 0.5MPa, polymerization time: 1h, catalyst dosage: 5 μmol. Its specific embodiment is the same as Example 1, the differences are shown in Table 3, further, the weight of the polymer obtained in Example 15-18, the polymer glass transition temperature, the content of monomer b / c in the polymer, and the polymer melt index is listed in the following table 3, wherein the DSC pattern of Example 15 is as follows Figure 4 As shown, Tg peaks can be observed, but no crystalline peaks.

[0078] Table 3

[0079]

[0080] Examples 19-22 provide a method for p...

Example Embodiment

[0085] Example 23-26 provides a preparation method of cyclic olefin copolymer and the copolymer prepared thereof, the polymerization conditions are monomer a is ethylene; monomer b is hypoglycene, concentration: 1mol / L; monomer c is 5-hydroxy-2-hypoglyctic flakeene, concentration: 0.2mol / L; polymerization temperature: 70 °C, polymerization pressure: 0.5MPa, polymerization time: 1h, catalyst dosage: 5μmol. The specific embodiment is the same as Example 1, the differences are shown in Table 5, further, the weight of the polymer obtained in Example 8-14, the polymer vitrification transition temperature, the content of monomer b / c in the polymer, and the polymer melt index is listed in the following table 5, wherein the DSC pattern of Example 23, as shown in Figure 6 As shown, Tg peaks can be observed, but no crystalline peaks.

[0086] Table 5

[0087]

[0088]

[0089] The performance test of the copolymer prepared from different monomers a, b, c, d of Example 1-26, as wel...

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Abstract

The invention relates to C08F, in particular to a cycloolefin copolymer with polar groups and a preparation method of the cycloolefin copolymer. Structural units of the cycloolefin copolymer comprise a vinyl unit A, a non-polar unit B and a polar unit. According to the cycloolefin copolymer provided by the invention, the polar cyclic unit is introduced, so that the compatibility and cohesiveness of the material in the use process can be promoted, and meanwhile, the structure of the non-polar unit and the polar unit can be controlled, so that the cycloolefin copolymer has high light transmission and provides high optical performance under different vinyl chain unit copolymers. By adjusting the use amount of a polar unit and a non-polar unit relative to a vinyl unit, the inventor finds that the polar copolymer is controlled to have a wide-range adjustable glass transition temperature, the formation of an amorphous structure can be promoted, the generation of a crystalline chain segment is avoided, and the improvement of optical characteristics is further promoted; the copolymer application range is expanded.

Description

technical field [0001] The present invention relates to C08F, more specifically, the present invention relates to a kind of cyclic olefin copolymer with polar group and preparation method. Background technique [0002] Polyolefin materials have been widely used in daily life. Among them, cyclic olefin copolymer (COC) is widely used in the fields of optics, packaging, medical treatment, and electronic products due to its excellent optical properties, good heat resistance, low dielectric constant, and good barrier properties. However, cyclic olefin copolymers composed only of carbon and hydrogen atoms have non-polar characteristics, which lead to disadvantages such as poor adhesion, poor printing effect, and insufficient compatibility with other polymer materials during application. Introducing polar groups into polymers is an effective method to solve the shortcomings of cycloolefin copolymers, improve their physical and chemical properties, and broaden their application ran...

Claims

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Application Information

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IPC IPC(8): C08F210/02C08F210/06C08F210/14C08F232/08C08F4/80
CPCC08F210/02C08F210/14C08F210/06C08F232/08C08F4/80
Inventor 廖恒左洪亮刘阳陈鹏州黄杰
Owner 广东新华粤石化集团股份公司
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