Heat-curable maleimide resin composition

Patent metadata

Field	Value
Publication number	US-2025059312-A1
Application number	US-202418932752-A
Country	US
Kind code	A1
Filing date	Oct 31, 2024
Priority date	Dec 18, 2020
Publication date	Feb 20, 2025
Grant date	—

Abstract

Provided are a heat-curable maleimide resin composition suitable for use in a substrate, and whose cured product has an excellent high-temperature property due to its high glass-transition temperature, an excellent dielectric property and an excellent dimension stability; and an uncured and cured resin films comprised of such composition, and having an excellent handling property. The heat-curable maleimide resin composition contains:(A) a maleimide resin having a number average molecular weight of not lower than 3,000;(B) an organic compound having, in one molecule, at least one allyl group and at least one isocyanuric ring; and(C) a reaction initiator.

First claim

What is claimed is:

1 . A heat-curable maleimide resin composition comprising:
(A) a maleimide resin represented by the following formula (3) and having a number average molecular weight of not lower than 3,000; (B) an organic compound having, in one molecule, at least one allyl group and at least one isocyanuric ring; and (C) a reaction initiator,

wherein X 1 independently represents a divalent group, k is a number of 1 to 30, l is a number of 0 to 10, each of A 1 and A 2 independently represents a divalent aromatic group, the divalent group represented by X 1 being selected from the following formulae,

wherein a is a number of 1 to 6, and the divalent aromatic group represented by A 1 and A 2 being expressed by the following formula (4) or (5),

wherein X 1 is as defined in the formula (3), R 2 independently represents a hydrogen atom, a chlorine atom or a substituted or unsubstituted aliphatic hydrocarbon group having 1 to 6 carbon atoms, X 2 independently represents a divalent group selected from the following formulae,

wherein a is a number of 1 to 6.

2 . The heat-curable maleimide resin composition according to claim 1 , wherein the organic compound as the component (B) has, in one molecule, two or more allyl groups.

3 . The heat-curable maleimide resin composition according to claim 1 , wherein the reaction initiator as the component (C) is a radical polymerization initiator.

4 . An uncured resin film comprised of the heat-curable maleimide resin composition according to claim 1 .

5 . A cured resin film comprised of a cured product of the heat-curable maleimide resin composition according to claim 1 .

6 . A prepreg comprising the heat-curable maleimide resin composition according to claim 1 ; and a fiber base material.

7 . An adhesive agent comprised of the heat-curable maleimide resin composition according to claim 1 .

8 . A substrate comprising the heat-curable maleimide resin composition according to claim 1 .

9 . The heat-curable maleimide resin composition according to claim 1 , wherein
said component (A) is contained in the composition in an amount of from 20 to 90% by mass; said component (B) is contained in the composition in an amount of from 3 to 50 parts by mass per 100 parts by mass of a sum total of the components (A) and (B); and said component (C) is contained in the composition in an amount of from 0.1 to 5 parts by mass per 100 parts by mass of the sum total of the Components (A) and (B).

10 . The heat-curable maleimide resin composition according to claim 1 , wherein X 1 in the formula (3) is —CH 2 — or —C(CH 3 ) 2 —.

Assignees

• Shinetsu Chemical Co

Inventors

• Tsutsumi Yoshihiro
• Kudo Yuki
• Yamaguchi Shinsuke

Classifications

• C08J5/24

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

• C09J179/08

  Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title

• C08J2379/08

  Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title

• C08J5/04

  Reinforcing macromolecular compounds with loose or coherent fibrous material · CPC title

• C08G73/1021

  characterised by the catalyst used · CPC title