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Cycloolefin copolymer and preparation method thereof

A technology of cyclic olefin copolymers and polymerization reaction products, which is applied in the field of copolymers, can solve the problems of poor heat resistance, poor mechanical properties, and poor elongation at break of cyclic olefin copolymers, and achieve good transparency, Good heat resistance and mechanical properties

Inactive Publication Date: 2014-08-06
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Utilize the commercialized cyclic olefin copolymer that ROMP method gains at present, such as trade mark is and The cyclic olefin copolymer has good mechanical properties, but the glass transition temperature of this cyclic olefin copolymer is low, such as and The glass transition temperature is only 140°C, The glass transition temperature of the cyclic olefin copolymer is 170 ° C, so the heat resistance of this cycloolefin copolymer is poor
[0005] A cycloolefin copolymer with a higher glass transition temperature can be prepared by chain polymerization of ethylene and norbornene monomers. Cycloolefin copolymers, but the molecular chain rigidity of this cycloolefin copolymer is strong, and the elongation at break of the cycloolefin copolymer is poor, so the mechanical properties of this cycloolefin copolymer are poor
[0006] The cycloolefin copolymers provided by the prior art cannot have good heat resistance and mechanical properties at the same time

Method used

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  • Cycloolefin copolymer and preparation method thereof
  • Cycloolefin copolymer and preparation method thereof
  • Cycloolefin copolymer and preparation method thereof

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preparation example Construction

[0046] The present invention provides a kind of preparation method of cycloolefin copolymer described in above-mentioned technical scheme, comprises the following steps:

[0047] 1), under the action of a catalyst, a compound having a structure shown in formula II and a compound having a structure shown in formula III are polymerized in a solvent to obtain a polymerized reaction product;

[0048] 2), hydrogenating the polymerization reaction product and a hydrogen source to obtain a cycloolefin copolymer;

[0049]

[0050] In the present invention, preferably, the compound having the structure shown in formula II, the compound having the structure shown in formula III and a solvent are mixed, and a catalyst is added to the obtained mixture for polymerization reaction to obtain a polymerization reaction product. In the present invention, the compound having the structure represented by formula II, the compound having the structure represented by formula III and the solvent a...

Embodiment 1

[0113] Add 800 mL of norbornadiene, 230 grams of anthracene and 1 gram of 2,6-di-tert-butyl-p-cresol in sequence to a 2-liter stainless steel autoclave, and repeatedly vacuumize the autoclave 3 times Nitrogen filling operation: the autoclave was heated to 180° C., and the contents in the autoclave were reacted for 30 hours under stirring conditions.

[0114] After the reaction, the obtained reaction product was cooled to 25° C., left to stand for 12 hours and then filtered. The obtained filtered product was washed twice with n-hexane to obtain 260 g of the product. The yield of the product prepared by the method provided in Example 1 of the present invention was 75%.

[0115] The above-mentioned obtained product is carried out to proton nuclear magnetic resonance spectrum detection, and detection result is as follows: figure 1 as shown, figure 1 For the proton nuclear magnetic resonance spectrum figure of the product that the embodiment of the present invention 1 obtains, by...

Embodiment 2

[0117] 300 mL of n-octene, 108 mL of dicyclopentadiene and 1 gram of 2,6-di-tert-butyl-p-cresol were successively added to a 2-liter stainless steel autoclave, and the vacuuming of the autoclave was repeated 3 times The operation of post-filling with nitrogen: the autoclave was heated to 240°C, and the contents in the autoclave were reacted for 8 hours under the condition of stirring.

[0118] After the reaction, the obtained reaction product was cooled to 25°C, and after standing for 12 hours, it was distilled at 120°C under normal pressure to collect unreacted n-octene, and then the resulting atmospheric distillation product was decompressed at 80°C Distill and collect fractions at 68°C to 80°C to obtain 108 grams of product. The yield of the product prepared by the method provided in Example 2 of the present invention is 38.9%.

[0119] The above-mentioned obtained product is carried out to proton nuclear magnetic resonance spectrum detection, and detection result is as fo...

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Abstract

The invention provides a cycloolefin copolymer with a structure shown in the formula I. In the formula I, x and y refer to polymerization degrees, wherein x is more than or equal to 250, and is less than or equal to 500; y is more than or equal to 20, and is less than or equal to 144. The cycloolefin copolymer provided by the invention has relatively good heat resistance and mechanical properties simultaneously. Experimental results show that the cycloolefin copolymer provided by the invention has the glass-transition temperature of 125-215 DEG C, the relatively good resistance, the tensile strength of 23-35MPa, the tensile modulus of 1000-1650MPa, the elongation at break of 3.7-4.9% and the relatively good mechanical properties. Moreover, the cycloolefin copolymer provided by the invention also has relatively good transparency. The experimental results show that the cycloolefin copolymer provided by the invention has the light transmittance of more than 90%.

Description

technical field [0001] The invention relates to the technical field of copolymers, in particular to a cycloolefin copolymer and a preparation method thereof. Background technique [0002] Cyclic olefin copolymers are a class of high value-added thermoplastic engineering plastics polymerized from cyclic olefins. This copolymer has high transparency, low dielectric constant, excellent heat resistance, chemical resistance, and melt flow. Good resistance, barrier property and dimensional stability. Therefore, cycloolefin copolymers can be widely used in the manufacture of various optical, information, electrical, and medical materials. [0003] The heat resistance of cycloolefin copolymers is an important property of this material. In some high-temperature environments, if the heat resistance of the cycloolefin copolymer is poor, the cycloolefin copolymer will undergo dimensional changes such as distortion and deformation, which will directly affect the optical properties and ...

Claims

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Application Information

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IPC IPC(8): C08F232/08C08F8/04
Inventor 李悦生杨继兴李彦国穆红亮刘三荣崔磊
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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