Curable composition

Patent metadata

Field	Value
Publication number	US-12528893-B2
Application number	US-202017755996-A
Country	US
Kind code	B2
Filing date	Nov 25, 2020
Priority date	Nov 26, 2019
Publication date	Jan 20, 2026
Grant date	Jan 20, 2026

Abstract

The present invention provides a curable composition capable of securing delayed curing time for carrying out a work such as laminating or tightening after carrying out irradiation with an energy ray or heating and capable of exhibiting delayed curing property after that, regardless of whether an adherend is transparent or not. The present invention is a curable composition comprising components (A) to (C): a component (A): a compound having a (meth)acryloyl group in a molecule; a component (B): saccharin; and a component (C): at least one of a photocationic catalyst as a component (C-1) and a thermal cationic catalyst as a component (C-2).

First claim

The invention claimed is:

1 . A curable composition comprising components (A) to (C):
a component (A): a compound having a (meth)acryloyl group in a molecule, a component (B): saccharin, and a component (C): a photocationic catalyst as a component (C-1), wherein the photocationic catalyst generates an acid by irradiation with an energy ray, wherein the curable composition comprises no organic peroxide, the component (C-1) is a salt composed of a cationic species and an anionic species, the cationic species is selected from the group consisting of an iodonium-based cationic species and a sulfonium-based cationic species, the anionic species is selected from a group consisting of a phosphorus-based anionic species, a boron-based anionic species, an antimony-based anionic species, an arsenic-based anionic species, and a sulfonic acid-based anionic species, and the curable composition, which is not under an anaerobic condition, is capable of being in an uncured state immediately after completion of the irradiation with the energy ray and being cured after specific time has elapsed since the completion of the irradiation with the energy ray.

2 . The curable composition according to claim 1 , further comprising a radical polymerization accelerator as a component (D).

3 . The curable composition according to claim 2 , wherein the component (D) is an amine compound other than the component (B).

4 . The curable composition according to claim 1 , wherein the specific time is 30 seconds to 10 hours.

5 . The curing composition according to claim 1 , wherein the component (C-1) is a compound represented by the following formula 2:

wherein R − is an anion selected from the group consisting of hexafluoroantimonate, tetrafluoroborate, hexafluorophosphate, hexafluoroarsenate, hexachloroantimonate, trifluoromethanesulfonate ion, and fluorosulfonate ion.

6 . A curable composition comprising components (A) to (C):
a component (A): a compound having a (meth)acryloyl group in a molecule, a component (B): saccharin, and a component (C): a thermal cationic catalyst as a component (C-2), wherein the thermal cationic catalyst generates an acid by heating, and the curable composition, which is not under an anaerobic condition, is capable of being in an uncured state immediately after completion of the heating and being cured after specific time has elapsed since the completion of the heating.

7 . The curable composition according to claim 6 , comprising no organic peroxide.

8 . A curable composition comprising components (A) to (C):
a component (A): a compound having a (meth)acryloyl group in a molecule, a component (B): saccharin, and a component (C): a photocationic catalyst as a component (C-1) and a thermal cationic catalyst as a component (C-2), wherein the photocationic catalyst generates a first acid by irradiation with an energy ray, and the thermal cationic catalyst generates a second acid by heating, and the curable composition, which is not under an anaerobic condition, is capable of being in an uncured state immediately after completion of the irradiation with the energy ray or the heating and being cured after specific time has elapsed since the completion of the irradiation with the energy ray or the heating.

9 . A curing method comprising applying the curable composition according to claim 1 to an adherend and then irradiating the curable composition with an energy ray.

10 . A curing method comprising applying the curable composition according to claim 6 to an adherend and then heating the curable composition.

Assignees

• Three Bond Co Ltd

Inventors

• Omura Ai

Classifications

• C09J133/04

  Homopolymers or copolymers of esters {(C09J143/04 takes precedence)} · CPC title

• C09J4/06

  {Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond} in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00 · CPC title

• C08F2/44

  Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers · CPC title

• C08F20/10 Primary

  Esters · CPC title

• C09D4/00

  Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond {; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16} · CPC title