Two-part adhesive
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- CEMEDINE CO LTD
- Filing Date
- 2021-12-24
- Publication Date
- 2026-06-23
Smart Images
Figure 0007877679000001 
Figure 0007877679000002
Abstract
Claims
1. (a-1) A compound having one or more (meth)acryloyl groups in the molecule and (a-2) an organic peroxide, Agent B comprises (b-1) a compound having a thiol group, (b-2) a reducing agent that forms a redox catalyst system with an organic peroxide, and (b-3) an organic compound having an SP value of 12.0 or higher, a melting point of 25°C or lower, and a vapor pressure of less than 1 kPa at 25°C. Composed of, The above-mentioned agent A and / or agent B contains an elastomer, The above (a-1) includes a (meth)acrylate oligomer having one or more (meth)acryloyl groups, and the number of (meth)acryloyl groups contained within the molecule of the (meth)acrylate monomer and / or oligomer is 1 to 10. The above (b-2) is one or more selected from the group consisting of amine compounds, thiourea derivatives, and metal compounds. The above (b-3) is a compound represented by P(=O)(OR1)x(OH)y (wherein R1 is an aliphatic hydrocarbon group having 1 to 20 carbon atoms or an aromatic hydrocarbon group having 6 to 20 carbon atoms, and if there are multiple R1s, they may be the same or different from each other. x is 1 or 2, y is 1 or 2, and x + y = 3). Two-part adhesive.
2. The content of (a-1) is 90% by mass or less and 10% by mass or more, with the total of (a-1), (a-2), (b-1), (b-2), (b-3) and the elastomer being 100% by mass. The content of (a-2) is 10% by mass or less and 0.1% by mass or more, relative to 100% by mass of (a-1). The content of (b-1) is 30% by mass or less and 0.001% by mass or more, relative to 100% by mass of (a-1). The content of (b-2) is 40% by mass or less relative to 100% by mass of (a-2). The two-component adhesive according to claim 1.
3. The content of the elastomer is 15% by mass or less and greater than 0% by mass, with the total of (a-1), (a-2), (b-1), (b-2), (b-3) and the elastomer being 100% by mass. A two-component adhesive according to claim 1 or 2.
4. The two-component adhesive according to any one of claims 1 to 3, wherein the (meth)acrylate oligomer comprises a (meth)acrylate oligomer having a mass-average molecular weight of 500 or more and 100,000 or less.
5. The elastomer is an acrylonitrile-butadiene-methacrylic acid copolymer, an acrylonitrile-butadiene-methyl methacrylate copolymer, a methyl methacrylate-butadiene-styrene copolymer (MBS resin), an acrylonitrile-styrene-butadiene copolymer, an acrylonitrile-butadiene rubber, an urethane rubber, an styrene-butadiene rubber, an chloroprene rubber, an polyisoprene rubber, an nitrile rubber, an acrylic rubber, an epichlorohydrin rubber, an butadiene rubber, an natural rubber, an opaque polybutadiene, an opaque-terminated liquid polybutadiene, an opaque acrylonitrile-butadiene copolymer, an opaque polybutadiene-styrene synthetic rubber, an opaque A two-component adhesive according to any one of claims 1 to 4, wherein the adhesive is one or more selected from ethylene-EPDM synthetic rubber, caprolactone-type urethane thermoplastic elastomer, adipate-type urethane thermoplastic elastomer, PTMG-type urethane thermoplastic elastomer, polybutylene terephthalate-polytetramethylene glycol multiblock polymer, nylon-polyol block copolymer, nylon-polyester block copolymer, 1,2-polybutadiene thermoplastic elastomer, PVC thermoplastic elastomer, rubber microparticles having a rubber layer, and core-shell type rubber microparticles having a core layer made of rubber and a shell layer further covered with a resin layer.
6. A two-component adhesive according to any one of claims 1 to 5, wherein the mixing ratio of agent A to agent B is 2 parts by mass or less and 0.01 parts by mass or more of agent B per 1 part by mass of agent A.
7. A member having a layer of a two-component adhesive according to any one of claims 1 to 6.