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A kind of cyclic olefin copolymer and preparation method thereof

A cyclic olefin copolymer and cyclic olefin technology, applied in the field of cyclic olefin copolymer, can solve the problems of harsh equipment and reaction conditions, etc.

Active Publication Date: 2019-09-17
苏州格睿光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of cyclic olefin copolymer and preparation method thereof, the heat resistance of this copolymer is improved than existing cyclic olefin polymer, and this preparation method can solve the problem of equipment and reaction conditions in the prior art demanding question

Method used

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  • A kind of cyclic olefin copolymer and preparation method thereof
  • A kind of cyclic olefin copolymer and preparation method thereof
  • A kind of cyclic olefin copolymer and preparation method thereof

Examples

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preparation example Construction

[0036]The present invention also provides a preparation method of the above-mentioned cycloolefin copolymer, comprising the following steps: dissolving the above-mentioned comonomer and metathesis polymerization catalyst in a solvent and dispersing them uniformly; removing the solvent under reduced pressure, and injecting the obtained liquid composition into a molding mold Inside; temperature rise for copolymerization reaction.

[0037] In the preparation method according to the present invention, the dissolving, dispersing and depressurizing steps have no limitation on the temperature of the system, as long as the comonomer and the metathesis polymerization catalyst are uniformly dispersed in the solvent, and the solvent can be discharged out of the system smoothly That's it. In order to prevent the comonomer and the metathesis polymerization catalyst from starting to react before entering the molding die, resulting in an increase in the viscosity of the system, in the steps ...

Embodiment 1

[0044] This example is used to illustrate the cycloolefin copolymer of the present invention and its preparation method.

[0045] Get the dicyclopentadiene of 100 molar parts, 0.04 molar parts dichloro (o-isopropoxyphenylmethylene) (tricyclohexylphosphine) ruthenium (II), 1 molar part of bismaleyl shown in formula I imine (where R 1 and R 2 Both are hydrogen atoms) and mixed evenly, placed in a 50mL single-necked flask, added 5mL of purified n-pentane, stirred at 30°C to dissolve, and vacuumed to remove the solvent in the system. When the reactant becomes a viscous liquid, it is poured into a mold preheated at 30° C., and the temperature is gradually raised to carry out ring-opening polymerization to obtain a copolymer P1. Heating temperature and time: 70°C (4h) + 130°C (3h) + 160°C (4h) + 185°C (3h) + 200°C (3h).

Embodiment 2

[0047] This example is used to illustrate the cycloolefin copolymer of the present invention and its preparation method.

[0048] Take 40 molar parts of norbornene, 60 molar parts of methyldicyclopentadiene, 0.2 molar parts of [1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene] Dichloro(benzylidene) (tricyclohexylphosphine) ruthenium, bismaleimide (wherein R shown in 15 mole parts formula II 1 is methyl, R 2 is a hydrogen atom), mix well, place in a 50mL single-necked flask, add 2mL of purified CH 2 Cl 2 , Stir at -20°C to dissolve it, and remove the solvent in the system by vacuuming. When the reactant becomes a viscous liquid, it is poured into a preheated mold at 30°C and the temperature is gradually raised to carry out ring-opening polymerization to obtain the copolymer P2. Heating temperature and time: 40°C (3h) + 100°C (4h) + 150°C (2h) + 165°C (4h) + 190°C (4h).

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Abstract

The invention discloses a cycloolefin copolymer which is obtained through a copolymerization reaction on copolymerization monomers under the action of a metathesis polymerization catalyst, wherein the copolymerization monomers comprise cycloolefin and bismaleimide, and the bismaleimide has a structure as shown in a formula I or II in the description, wherein R1 and R2 are separately independent hydrogen atoms or linear or branched C1-C6 fatty alkanyl, and the glass-transition temperature Tg of the cycloolefin copolymer is higher than 144 DEG C. The invention also discloses a preparation method of the cycloolefin copolymer. By adding the bismaleimide with the structure as shown in the formula I or II in the description into the cycloolefin monomer, the heat resistance of the cycloolefin copolymer obtained by polymerization can be improved, and the copolymer can be prepared under a relatively mild condition, so that the production cost of the cycloolefin copolymer is lowered.

Description

technical field [0001] The invention relates to the field of cycloolefin copolymers, in particular to a copolymer containing bismaleimide and cycloolefin 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 affe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F232/08C08F222/40
Inventor 郑玉斌
Owner 苏州格睿光电科技有限公司