Polyfunctional vinyl resin and method for producing same, polyfunctional vinyl resin composition, cured article, prepreg, resin sheet, and laminated plate

Patent metadata

Field	Value
Publication number	US-12378345-B2
Application number	US-202117926131-A
Country	US
Kind code	B2
Filing date	May 13, 2021
Priority date	May 28, 2020
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

Provided is a resin material showing a high thermal conductivity and having high heat resistance while having a low dielectric constant and a low dielectric loss tangent. The material is a polyfunctional vinyl resin, which is represented by the following general formula (1):

where R 1 s each independently represent a hydrocarbon group having 1 to 8 carbon atoms, R 2 s each independently represent a hydrogen atom or a dicyclopentenyl group, and at least one thereof represents a dicyclopentenyl group, Xs each independently represent a hydrogen atom or a vinyl group-containing aromatic group represented by the formula (1 a ), and at least one thereof represents a vinyl group-containing aromatic group, “n” represents a number of repetitions, and the average thereof is a number of from 1 to 5, and Ar represents an aromatic ring.

First claim

The invention claimed is:

1. A polyfunctional vinyl resin, which is represented by the following general formula (1):

where
R 1 s each independently represent a hydrocarbon group having 1 to 8 carbon atoms,
R 2 s each independently represent a hydrogen atom or a dicyclopentenyl group, and at least one thereof represents a dicyclopentenyl group,
Xs each independently represent a hydrogen atom or a vinyl group-containing aromatic group represented by formula (1a), and at least one thereof represents a vinyl group-containing aromatic group, and Ar represents an aromatic ring, and
“n” represents a number of repetitions, and an average thereof is a number of from 1 to 5.

2. The polyfunctional vinyl resin according to claim 1 , wherein Ar in the formula (1a) represents an aromatic ring selected from the group consisting of: a benzene ring; a naphthalene ring; and a biphenyl ring, and the aromatic ring Ar is unsubstituted, or has one or more substituents.

3. A method of producing the polyfunctional vinyl resin of claim 1 , comprising:
causing dicyclopentadiene to react at a ratio of from 0.28-fold mol to 2-fold mol with 1 mol of a 2,6-disubstituted phenol represented by the following general formula (2) to provide a polyhydric hydroxy resin represented by the following general formula (3); and
then causing the resultant polyhydric hydroxy resin and an aromatic vinylating agent represented by the following general formula (4) to react with each other:

where
R 1 , R 2 , “n”, and X are each identical in meaning to the definition in the general formula (1), and
R 3 represents a halogen.

4. A polyfunctional vinyl resin composition, comprising, as essential components:
the polyfunctional vinyl resin of claim 1 ; and
a radical polymerization initiator.

5. A cured article, which is obtained by curing the polyfunctional vinyl resin of claim 1 .

6. A prepreg, comprising:
the polyfunctional vinyl resin composition of claim 4 or a semi-cured article thereof; and
a fibrous base material.

7. A resin sheet, comprising:
a resin layer containing the polyfunctional vinyl resin composition of claim 4 or a semi-cured article thereof; and
a supporting film.

8. A laminated plate, which is molded by laminating the prepreg of claim 6 .

9. A cured article, which is obtained by curing the polyfunctional vinyl resin composition of claim 4 .

10. A laminated plate, which is molded by laminating the resin sheet of claim 7 .

11. A laminated plate, which is molded by laminating a prepreg and a resin sheet,
wherein the prepreg comprises:
the poly functional vinyl resin composition of claim 4 or a semi-cured article thereof; and
a fibrous base material,

wherein the resin sheet comprises:
a resin layer containing the polyfunctional vinyl resin composition of claim 4 or a semi-cured article thereof; and
a supporting film.

Assignees

• Nippon Steel Chemical & Mat Co Ltd
• Kukdo Chemical Co Ltd

Inventors

• Soh Masahiro
• Ishihara Kazuo
• Han Jaeman
• Youn Haerry

Classifications

• C08J2351/08

  grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C08J5/24

  Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs · CPC title

• C08G61/02 Primary

  Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes · CPC title

• B32B2307/302

  Conductive · CPC title

• B32B2307/204

  Di-electric · CPC title