Crosslinkable cycloolefin copolymer as well as preparation method and application thereof

A technology of olefin copolymers and cross-linked rings, which is applied in the field of cross-linkable cyclic olefin copolymers and its preparation, can solve problems such as limited material use, unfavorable precision processing, complex systems, etc., and achieves easy shape change, convenient precision processing, Apply a wide range of effects

Pending Publication Date: 2022-07-01
JIANGSU BREE OPTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its main resin component is a composition, and the cross-linked body is composed of cycloolefin copolymer and polybutadiene, and the system is complex.
However, its cross-linking body is limited to polybutadiene, and the double bonds exist in different components. The process of ectopic cross-linking reaction is not easy to control, and there is no mention of the change from thermoplastic to thermosetting, and the processing mode is limited to glue. layer, which can be processed in a single way, which limits the use of materials
[0006] To sum up, the cycloolefin copolymers in the prior art mostly use the composition of cycloolefin polymers, the composition is complex, the processing process is not easy to control, its machinability is uneven, and the requirements for processing conditions are relatively narrow. , which limits the use of cycloolefin copolymer materials, and there are problems such as harsh processing methods, which are not conducive to precision processing
[0007] Moreover, the existing cyclic olefins are mainly thermoplastic. When used as circuit substrates or packaging materials, they are often unusable due to softening problems. Especially in power devices, the problem of heat is more obvious. Traditional thermoplastic COC materials cannot meet needs

Method used

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  • Crosslinkable cycloolefin copolymer as well as preparation method and application thereof
  • Crosslinkable cycloolefin copolymer as well as preparation method and application thereof
  • Crosslinkable cycloolefin copolymer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The reaction kettle with an effective volume of 2L was treated with water and oxygen; the temperature of the reaction system was controlled to be 40°C; The system is uniform; ethylene monomer is introduced, about 2 g, and 1 ml of the main catalyst Cs-symmetric fluorenyl aminodimethyltitanium complex solution (the solute content is 20 μmol) and 40 μmol of the cocatalyst C2H5AlCl2 solution are successively injected with a syringe, and the reaction time is 20 minutes. After the polymerization, 50 g of absolute ethanol was injected into the reaction kettle to terminate the reaction, the solution was taken out, washed repeatedly with acetone and absolute ethanol, and then placed in an oven at 60 °C for 6 h after suction filtration. The cross-linkable cyclic olefin copolymer product is obtained, and after the cross-linkable cyclic olefin copolymer product is dried, it is stored and used for testing.

[0066] The types of main catalyst and co-catalyst used in Examples 2-18 are...

Embodiment 2-6

[0068] The content of each monomer in Examples 2-6 was adjusted according to Table 1, and the process parameters were adjusted according to Table 2, and others were the same as in Example 1.

[0069] Monomer formulations of Examples 2-6 of Table 1

[0070] Monomer a Monomer b monomer c Example 2 200 40 5 Example 3 200 100 35 Example 4 200 160 60 Example 5 200 240 70 Example 6 200 300 120

[0071] Solvent and process parameter of table 2 embodiment 2-6

[0072]

Embodiment 7-12

[0074] Source monomer a in embodiment 7-12 is The source monomer b is 5-ethyl-2-norbornene, the source monomer c is ethylene, and the reaction solvent is cyclohexane. .

[0075] Monomer formulations of Table 3 Examples 7-12

[0076] Monomer a Monomer b monomer c Example 7 200 20 2 Example 8 200 40 10 Example 9 200 100 30 Example 10 200 160 90 Example 11 200 240 110 Example 12 200 300 180

[0077] Solvent and process parameter of table 4 embodiment 7-12

[0078]

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Abstract

The invention discloses a crosslinkable cycloolefin copolymer as well as a preparation method and application thereof. Repeated structural units of the crosslinkable cycloolefin copolymer comprise a structural unit A and a structural unit B, and the B structural unit can be further crosslinked. The structural unit A is obtained from norbornene and a derivative monomer a thereof, the structural unit B is obtained from a monomer b containing two or more double bonds, the structure of the monomer b comprises at least one or more six-atomic rings, at least one double bond is on the six-atomic ring, and at least one double bond is adjacent to the ring body. The crosslinkable cycloolefin copolymer is a COC material with a controllable Tg point, is easy to process, and can be subjected to an in-situ crosslinking reaction in the subsequent processing process, so that a high-temperature-resistant COC material is obtained through molding, a thermoplastic material is changed into a thermosetting material, and the thermosetting cycloolefin copolymer can be applied to different fields and has wide application prospects. The materials comprise packaging materials, circuit substrates and the like.

Description

technical field [0001] The patent belongs to the field of polymer materials, and specifically relates to a crosslinkable cyclic olefin copolymer and its preparation method and application. Background technique [0002] Cyclic olefin copolymer (COC) is a kind of transparent high polymer with cyclic olefin structure, which is widely used in the manufacture of optical materials and electrical components. [0003] The current cyclic olefin copolymers are mainly copolymers obtained from norbornene and ethylene or α-olefin as monomers, which are thermoplastic materials with relatively high glass transition temperature (Tg) and are not easy to process. [0004] For example, CN108699302A provides a cyclic olefin copolymer composition and its crosslinked body, wherein the cyclic olefin copolymer composition comprises a cyclic olefin copolymer of a cyclic non-conjugated diene with a specific amount of specific repeating units (m), and a cyclic olefin copolymer (n) that does not conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F232/08C08F210/02C08F236/20C08F216/04
CPCC08F232/08C08F236/20C08F210/02C08F216/04
Inventor 何锦华蔡正国李树亚陈琳琳梁超符义兵
Owner JIANGSU BREE OPTRONICS CO LTD
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