JP-7856196-B2 - Adhesive set and adhesive

Inventors

• 松永 昌大
• 藤安 陽介
• 大治 雅史
• 川守 崇司

Assignees

• 株式会社レゾナック

Dates

Publication Date

20260511

Application Date

20250501

Priority Date

20190731

Claims (7)

1. A first liquid containing one or more acrylic monomers having two or more (meth)acryloyl groups, and an epoxy resin having two or more epoxy groups, The second solution contains a curing agent containing a compound having a nucleophilic reactive group that reacts with both an epoxy group and a (meth)acryloyl group, The acrylic monomer comprises a difunctional acrylic monomer having two (meth)acryloyl groups, and the ratio of the difunctional acrylic monomer to the total mass of the acrylic monomer is 75% by mass or more. The first liquid comprises a silane coupling agent having an epoxy group, and the second liquid comprises a silane coupling agent having an amino group. Adhesive set.
2. The adhesive set according to claim 1, wherein the silane coupling agent having an epoxy group comprises 3-glycidyloxypropyltrimethoxysilane, and the silane coupling agent having an amino group comprises 3-aminopropyltrimethoxysilane.
3. The adhesive set according to claim 1 or 2 , wherein the nucleophilic reactive group is an aliphatic amino group.
4. The adhesive set according to any one of claims 1 to 3 , wherein at least one of the first liquid or the second liquid further contains an inorganic filler.
5. The adhesive set according to any one of claims 1 to 4 , wherein only one of the first liquid or the second liquid further contains a pigment.
6. The adhesive set according to any one of claims 1 to 5 , wherein the first liquid and the second liquid each further contain a pigment, and the pigment contained in the first liquid and the pigment contained in the second liquid are different.
7. It comprises two or more adherends and an adhesive layer for bonding the two or more adherends, An adhesive body wherein the adhesive layer is a layer formed by the adhesive set described in any one of claims 1 to 6 .

Description

This disclosure relates to adhesive sets and adhesives. Conventionally, two-component adhesives using (meth)acrylic monomers are known as a type of adhesive (for example, Patent Document 1). In the case of conventional two-component adhesives using (meth)acrylic monomers, polymerization of the (meth)acrylic monomer generally proceeds through a redox catalyst system formed by a polymerization initiator and a reducing agent, resulting in the curing of the adhesive. Japanese Patent Publication No. 2013-117011 This is a cross-sectional view showing one embodiment of the adhesive. The embodiments of the present invention will be described below. However, the present invention is not limited to the embodiments described below. In this specification, (meth)acryloyl means acryloyl or methacryloyl, and this also applies to other similar expressions. One embodiment of the adhesive set is a two-component adhesive comprising a first liquid and a second liquid. The first liquid contains one or more acrylic monomers having two or more (meth)acryloyl groups, and an epoxy resin having two or more epoxy groups. The second liquid contains a curing agent containing a compound having a nucleophilic reactive group that reacts with both epoxy groups and (meth)acryloyl groups. Acrylic monomers are difunctional or multifunctional compounds having acryloyl groups, methacryloyl groups, or both. The number of (meth)acryloyl groups in an acrylic monomer may be 2 to 4. The acrylic monomer contained in the first solution mainly consists of a difunctional acrylic monomer having two (meth)acryloyl groups. Specifically, the ratio of the difunctional acrylic monomer to the total mass of the acrylic monomer contained in the first solution is 75% by mass or more. The ratio of the difunctional acrylic monomer to the total mass of the acrylic monomer may be 76% by mass or more, 77% by mass or more, 78% by mass or more, 79% by mass or more, 80% by mass or more, 81% by mass or more, 82% by mass or more, 83% by mass or more, 84% by mass or more, 85% by mass or more, 86% by mass or more, 87% by mass or more, 88% by mass or more, 89% by mass or more, 90% by mass or more, 91% by mass or more, 92% by mass or more, 93% by mass or more, 94% by mass or more, 95% by mass or more, 96% by mass or more, 97% by mass or more, 98% by mass or more, 99% by mass or more, or 100% by mass, from the viewpoint of long pot life, etc. The difunctional acrylic monomer may be, for example, a poly(meth)acrylate of an aliphatic polyol. Examples of poly(meth)acrylates of aliphatic polyols include diethylene glycol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, tripropylene glycol di(meth)acrylate, polypropylene glycol di(meth)acrylate, and polyethylene polypropylene glycol di(meth)acrylate. Other examples of difunctional acrylic monomers include 2,2'-di(meth)acryloyloxydiethyl phosphate, ethylene oxide-modified phosphate di(meth)acrylate, urethane acrylate, and epoxy acrylate. An example of a commercially available urethane acrylate is EBECRYL 230 (Daicel Ornex). An example of a commercially available epoxy acrylate is EBECRYL 230 (Daicel Ornex). These difunctional acrylic monomers can be used individually or in combination of two or more. The acrylic monomer may have two or more (meth)acryloyl groups and an epoxy group. In this specification, compounds having two or more (meth)acryloyl groups and one or more epoxy groups are classified as difunctional or polyfunctional acrylic monomers based on the number of (meth)acryloyl groups. The difunctional acrylic monomer may also be a compound having two (meth)acryloyl groups and no epoxy group. The first solution may further contain, in addition to the difunctional acrylic monomer, a polyfunctional acrylic monomer having three or more (meth)acryloyl groups. Examples of polyfunctional acrylic monomers include trifunctional (meth)acrylic monomers such as trimethylolpropane tri(meth)acrylate and pentaerythritol tri(meth)acrylate, and tetrafunctional (meth)acrylic monomers such as ditrimethylolpropane tetra(meth)acrylate. The first solution may further contain a monofunctional acrylic monomer having one (meth)acryloyl group. The proportion of the monofunctional acrylic monomer may be 0-10% by mass, 0-5% by mass, 0-2% by mass, or 0-1% by mass, relative to the total amount of the difunctional and polyfunctional acrylic monomers. The epoxy resin can be any bifunctional or multifunctional epoxy resin. The epoxy resin may have 2 to 4 epoxy groups. Examples of epoxy resins include diglycidyl ether type epoxy resins such as bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol AD type epoxy resin, bisphenol S type epoxy resin, and hydrogenated bisphenol A type epoxy resin; novolac type epoxy resins such as phenol novolac type epoxy resin and cresol novolac type epoxy resin; biphenyl type epoxy resins such as biphenyl type epoxy resin and biphenyl aralkyl type epoxy resin; glycidyl ester type epoxy resins, which are reacti