DCPD-derived polyether and method of producing the same

Patent metadata

Field	Value
Publication number	US-10711103-B2
Application number	US-201715826861-A
Country	US
Kind code	B2
Filing date	Nov 30, 2017
Priority date	Aug 10, 2017
Publication date	Jul 14, 2020
Grant date	Jul 14, 2020

Abstract

A low-k, non-flammable dicyclopentdiene (DCPD)-derived polyether and a method of producing the same are introduced. Incorporation of a phosphorus group and a DCPD derivative into a low-k, non-flammable dicyclopentdiene (DCPD)-derived polyether enable the DCPD-derived polyether to not only serve as an epoxy resin curing agent but also cure itself such that the cured product not only features satisfactory thermal properties and low-k characteristics but is also non-flammable.

First claim

What is claimed is:

1. A dicyclopentdiene (DCPD)-derived polyether expressed by structural formula (I) below,

where R is,

where n=10-100;
wherein the dicyclopentdiene (DCPD)-derived polyether is made by the steps of:
(1) allowing a compound expressed by structural formula (A) below

to react with 4,4′-difluorobenzophenone by alkaline catalysis to obtain polymer (B)

(2) allowing polymer (B) to react with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and phenol by acid catalysis to obtain DCPD-derived polyether expressed by structural formula (I-a) below,

where n=10-100; and

(3) allowing the polyether expressed by structural formula (I-a) to react with methacrylic anhydride by alkaline catalysis to obtain the dicyclopentdiene (DCPD)-derived polyether, wherein the DCPD-derived polyether has a glass transition temperature around 290° C.

2. A cured product produced by heating and curing constituents of the polyether of claim 1 .

3. The method of claim 1 , wherein an alkali in step (1) is K 2 CO 3 .

4. The method of claim 1 , wherein the reaction in step (1) further requires p-benzoquinone which functions as a radical inhibitor.

5. The method of claim 1 , wherein an acid in step (2) is H 2 SO 4 .

6. The method of claim 1 , further comprising allowing the polyether expressed by structural formula (I-a) to react with methacrylic anhydride by alkaline catalysis to obtain the polyether expressed by structural formula (I-c) below,

where n=10-100.

7. The dicyclopentdiene (DCPD)-derived polyether of claim 1 , wherein the dielectric constant of the dicyclopentdiene (DCPD)-derived polyether is 2.72.

Assignees

• Nat Chung Shan Inst Science & Tech
• National Chung San Institute Of Science And Tech

Inventors

• Su Wen-Chiung
• Lin Ching-Hsuan
• Hsiao Wei-Feng
• Lin Han-Ya

Classifications

• H05K1/0326

  containing O · CPC title

• H05K2201/012

  Flame-retardant; Preventing of inflammation · CPC title

• H05K1/0353

  consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement · CPC title

• C08G59/4071

  phosphorus containing compounds · CPC title

• C08G65/4012

  Other compound (II) containing a ketone group, e.g. X-Ar-C(=O)-Ar-X for polyetherketones · CPC title