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: 2014-07-30
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

[0037] The present invention provides a kind of preparation method of cycloolefin copolymer described in above-mentioned technical scheme, comprises the following steps:

[0038] 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;

[0039] 2), hydrogenating the polymerization reaction product and a hydrogen source to obtain a cycloolefin copolymer;

[0040]

[0041] 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

[0100] 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.

[0101] 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%.

[0102] The product obtained above was subjected to proton nuclear magnetic resonance spectrum detection and carbon nuclear magnetic resonance spectrum detection, and the detection result was that the product obtained in Example 1 of the present invention was a compound having the structure shown in formula II. ...

Embodiment 2

[0104]Add 4.96 grams of benzaldehyde-p-toluenesulfonylhydrazone, 1.75 grams of sodium methoxide and 40 mL of triethylene glycol in a 100 mL single-necked bottle, and place the single-necked bottle in a water bath at 60 ° C for 1 hours of synthesis.

[0105] After the synthesis reaction is completed, the methanol in the obtained synthesis reaction solution is extracted by a water pump to obtain a synthesis reaction product; the synthesis reaction product is extracted with n-pentane in ice water and then extracted with a saturated NaCl aqueous solution, and the The obtained extracted product was spin-dried to obtain phenyldiazomethane; the yield of said phenyldiazomethane was 50%.

[0106] Add 4.0 grams of dichlorotris(triphenylphosphine) ruthenium to a 250mL branch bottle, feed nitrogen to replace the air in the branch bottle, inject 40mL into the branch bottle and freeze it three times with liquid nitrogen - melted dichloromethane; place the check flask in a cold bath at -78°...

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Abstract

The invention provides a cycloolefin copolymer disclosed as Formula I, wherein x and y are polymerization degree, x is greater than or equal to 100 and smaller than or equal to 350, and y is greater than or equal to 25 and smaller than or equal to 150. The cycloolefin copolymer provided by the invention simultaneously has favorable heat resistance and mechanical properties. The experimental result indicates that the glass transition temperature of the cycloolefin copolymer is 160-201 DEG C, so the cycloolefin copolymer has favorable heat resistance; and the tensile strength is 32-35 MPa, the tensile modulus is 1450-1750 MPa, the elongation at break is 2.1-2.9%, so the cycloolefin copolymer has favorable mechanical properties. Besides, the cycloolefin copolymer provided by the invention also has favorable transparency. The experimental result indicates that the light transmittance of the cycloolefin copolymer is greater than 85%.

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): C08F232/08C08G61/08C08F8/04C08F4/80
Inventor 李悦生杨继兴李彦国崔磊刘三荣刘靖宇
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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