# US 2019/0169468 A1 · Radical-curable adhesive composition and adhesive

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- Number: US 2019/0169468 A1
- Document ID: US20190169468A1
- Status: Published application
- Kind: A1
- Application number: 16/304,350
- Filed: 2017-06-09
- Published: 2019-06-06
- Earliest claimed: 2016-07-04
- Assignees: Showa Denko K.K.
- Applicants: Showa Denko K.K.
- Inventors: Ryohei ITO; Tsunehiko NISHIMURA; Akifumi TAMURA; Nobuyuki TAKAHASHI
- Web page: https://patentgrep.com/patent/US20190169468A1

## CPC

- C09J 4/06: {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
- C08F 290/04: Polymers provided for in subclasses C08C or C08F
- C09J 11/04: inorganic
- C09J 11/06: organic
- C09J 109/02: Copolymers with acrylonitrile
- C09J 121/00: Adhesives based on unspecified rubbers
- C09J 133/10: Homopolymers or copolymers of methacrylic acid esters
- C08K 3/013: Fillers, pigments or reinforcing additives
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

A radical-curable adhesive composition containing a rubber (a) having one or more (meth)acryloyl groups within a single molecular chain, a polymerizable monomer (b) having both an epoxy group and a (meth)acryloyloxy group in the molecule, and a radical polymerization initiator (c). The rubber (a) is preferably a polymer of a monomer containing at least acrylonitrile.

## Claims

### Claim 1

A radical-curable adhesive composition comprising:
a rubber (a) having one or more (meth)acryloyl groups within a single molecular chain,
a polymerizable monomer (b) having both an epoxy group and a (meth)acryloyloxy group in each molecule, and
a radical polymerization initiator (c).

### Claim 2 (depends on 1)

The radical-curable adhesive composition according to claim 1, wherein the rubber (a) is a polymer of a monomer comprising at least acrylonitrile.

### Claim 3 (depends on 1)

The radical-curable adhesive composition according to claim 1, wherein the main chain of the rubber (a) is a copolymer of acrylonitrile and butadiene.

### Claim 4 (depends on 1)

The radical-curable adhesive composition according to claim 1, wherein the polymerizable monomer (b) comprises glycidyl (meth)acrylate.

### Claim 5 (depends on 1)

The radical-curable adhesive composition according to claim 1, further comprising a polymerizable monomer (d) other than the polymerizable monomer (b) and excluding (meth)acrylic acid.

### Claim 6 (depends on 1)

The radical-curable adhesive composition according to claim 1, wherein a total amount of the polymerizable monomer (b) and the polymerizable monomer (d) other than the polymerizable monomer (b) and excluding (meth)acrylic acid is from 20 to 200 parts by mass per 100 parts by mass of the rubber (a).

### Claim 7 (depends on 1)

The radical-curable adhesive composition according to claim 1, wherein an amount of the polymerizable monomer (b) is from 10 to 100 parts by mass per 100 parts by mass of a total amount of the polymerizable monomer (b) and the polymerizable monomer (d) other than the polymerizable monomer (b) and excluding (meth)acrylic acid.

### Claim 8 (depends on 5)

The radical-curable adhesive composition according to claim 5, further comprising a vinyl ester compound (e).

### Claim 9 (depends on 8)

The radical-curable adhesive composition according to claim 8, wherein a total amount of the rubber (a) and the vinyl ester compound (e) is from 105 to 200 parts by mass per 100 parts by mass of the rubber (a).

### Claim 10 (depends on 8)

The radical-curable adhesive composition according to claim 8, further comprising an inorganic filler (f).

### Claim 11 (depends on 10)

The radical-curable adhesive composition according to claim 10, comprising 3 to 1,000 parts by mass of the inorganic filler (f) per 100 parts by mass of a total amount of the rubber (a), the polymerizable monomer (b), the radical polymerization initiator (c), the polymerizable monomer (d) other than the polymerizable monomer (b) and excluding (meth)acrylic acid, and the vinyl ester compound (e).

### Claim 12 (depends on 1)

The radical-curable adhesive composition according to claim 1, wherein a cured product of the adhesive composition has insulating properties.

### Claim 13 (depends on 1)

An adhesive comprising the radical-curable adhesive composition according to claim 1.

### Claim 14 (depends on 1)

An electrical or electronic component in which a component has been bonded and/or encapsulated using a cured product of the radical-curable adhesive composition according to claim 1.

### Claim 15 (depends on 1)

A transportation device in which a component has been bonded using a cured product of the radical-curable adhesive composition according to claim 1.