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Cyclic olefin-based copolymers and methods for their preparation

A technology of cyclic olefin and binary copolymer, applied in the field of cyclic olefin-based copolymer and preparation thereof, can solve the problems of operability, insufficient heat resistance, etc.

Active Publication Date: 2020-07-03
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In general communication and network fields, polyphenylene ether is also used as a low-dielectric material, but there are handleability problems due to cracking of prepregs, and heat resistance is not enough

Method used

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  • Cyclic olefin-based copolymers and methods for their preparation
  • Cyclic olefin-based copolymers and methods for their preparation
  • Cyclic olefin-based copolymers and methods for their preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] 20 g of the polymer obtained in Comparative Example 1 was dissolved in 60 g of dichloromethane. While stirring, the temperature was lowered to 0° C., and 8.6 g of mCPBA (m-chloroperoxybenzoic acid) was slowly added dropwise. After stirring for 1 hour, the temperature was raised to room temperature, followed by reaction for 5 hours. After the reaction, the reaction mixture was filtered, and the obtained reaction solution was poured into excess methanol to obtain a white solid precipitate. The precipitate was filtered with a glass funnel, and dried in a vacuum oven at 30°C for 24 hours to obtain a copolymer having an epoxy conversion of 30% and a repeating unit of Chemical Formula 1:a repeating unit of Chemical Formula 2 in a molar ratio of 3:7 (Mw = 5600 g / mol, PDI = 1.95, yield 80%).

Embodiment 2

[0069] In the same manner as in Example 1, the epoxy conversion rate was 60% and the repeating unit of chemical formula 1: the molar ratio of the repeating unit of chemical formula 2 was a copolymer of 6:4 (Mw=5700g / mol, PDI=1.97, Yield 82%), except that the content of mCPBA (m-chloroperoxybenzoic acid) was changed from 8.6 g to 17.2 g.

Embodiment 3

[0079] In the same manner as in Example 1, the epoxy conversion rate was 30% and the repeating unit of chemical formula 1: the molar ratio of the repeating unit of chemical formula 2 was a copolymer (Mw=7800g / mol, PDI=2.08, Yield 80%), except that the polymer of Comparative Example 1 was changed to the polymer of Comparative Example 5.

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Abstract

The present invention relates to a cyclic olefin-based copolymer and a method for preparing same. More particularly, the present invention relates to a cyclic olefin-based bipolymer comprising three repeating units, having a particular functional group, in a predetermined ratio. The copolymer has low dielectric properties and thus can be applied to a semiconductor substrate, a printed circuit board and the like.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims based on Korean Patent Application No. 10-2016-0097089 filed with KIPO on July 29, 2016 and Korean Patent Application No. 10-2017-0090792 filed with KIPO on July 18, 2017 The benefit of priority of the number, the disclosure of which is incorporated herein by reference in its entirety. [0003] The present invention relates to cyclic olefin-based binary copolymers having low dielectric characteristics and methods for their preparation. Background technique [0004] With the current increase in demand for high-performance electronic equipment, higher frequencies are required in fields using semiconductor substrates and printed circuit boards. Since transmission loss of electric signals in a high frequency region is proportional to dielectric loss and frequency, transmission loss increases toward higher frequency regions, which adversely affects performance, durability, and prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F32/02C08F8/08C08F4/20C08F4/58C08F4/70
CPCC08F4/20C08F4/58C08F4/70C08F8/08C08F32/02
Inventor 宋永智崔地宁崔大胜黄承渊金多情李旼炯
Owner LG CHEM LTD