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Norbornene-ester polymer containing bulky substituents

A norbornene and polymer technology, applied in the field of norbornene-ester polymers, can solve problems such as difficult to ensure and unsuitable, and achieve the effects of improving light transmittance, good metal adhesion, and excellent optical properties

Inactive Publication Date: 2009-03-25
KOLON IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the final analysis, the above patents are not suitable for solving the above problems
Also, although the amount of norbornene-ester monomer used as the exo isomer should be 50 mol% or more, it is difficult to secure this amount of monomer

Method used

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  • Norbornene-ester polymer containing bulky substituents
  • Norbornene-ester polymer containing bulky substituents
  • Norbornene-ester polymer containing bulky substituents

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] The present invention can be better understood through the following examples, which are set forth for illustration and should not be construed as limiting the present invention.

[0054] Synthesis of Norbornene-Ester Monomer (Synthesis Examples 1-8, Comparative Synthesis Examples 1-2)

Synthetic example 1

[0055] Synthesis of 2-methyl-2-adamantyl-5-norbornene-2-methyl-2-carboxylate

[0056] Into a 0.25 L autoclave, DCPD (dicyclopentadiene, Aldrich, 10.2 ml, 0.0757 mol), 2-methyl-2-adamantyl methacrylate (42.6 g, 0.18 mol) and hydroquinone ( 0.83g, 0.1mol), then it was reacted at 180°C for 12 hours, after the reaction product was cooled, it was transferred to a distillation apparatus, and then a vacuum pump was used to distill under a reduced pressure of 1 torr, thereby obtaining the final product at 110°C (product rate: 25%). The molar ratio (mol%) of exo isomer to endoisomer of this product was 48.5:51.5.

[0057] 1 H-NMR (500MHz, CDCl 3 ), inner shape: δ 6.20(dd, 1H), 6.18(dd, 1H); outer shape: δ 6.12(m, 2H)

Synthetic example 2

[0058] Synthesis of 2-ethyl-2-adamantyl-5-norbornene-2-methyl-2-carboxylate

[0059] Into a 0.25 L autoclave, DCPD (dicyclopentadiene, Aldrich, 10.2 ml, 0.0757 mol), 2-ethyl-2-adamantyl methacrylate (44.3 g, 0.18 mol) and hydroquinone ( 0.83g, 0.1mol), then it was reacted at 200°C for 12 hours, after the reaction product was cooled, it was transferred to a distillation apparatus, and then a vacuum pump was used to distill under a reduced pressure of 1 torr, thereby obtaining the final product (product) at 120°C rate: 27%). The molar ratio (mol%) of exo isomer to endo isomer of this product is 45.5:54.2.

[0060] 1 H-NMR (500MHz, CDCl 3 ), inner shape: δ 6.22(dd, 1H), 6.19(dd, 1H); outer shape: δ 6.18(m, 2H)

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Abstract

This invention provides a norbornene-ester polymer, obtaining by a norbornene-ester monomer having a total number of carbons of the ranges from 19 to 80, having a bulky substituent.

Description

technical field [0001] The present invention relates to a norbornene-ester polymer having an ester group, and more particularly, to a norbornene-ester polymer obtained from a norbornene monomer having a bulky substituent. Background technique [0002] Generally, as a material of an insulating member, an inorganic material such as silicon dioxide or silicon nitride has been mainly used. However, the growing demand for smaller devices with high efficiencies has led to the need for low dielectric constant and hygroscopicity with excellent metal adhesion, strength, thermal stability and light transmittance and also has a high glass transition temperature polymer requirements. [0003] Currently, polyimide or BCB (diphenylcyclobutene) has been used as a low dielectric substance for electronic materials. Polyimides have been widely used as electronic materials due to their excellent thermal and oxidative stability, high glass transition temperature, and excellent mechanical prop...

Claims

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Application Information

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IPC IPC(8): C08G61/06
CPCC08G61/08C08G63/123C08G63/127G02B1/04
Inventor 白守珉金炫辰
Owner KOLON IND INC
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