Adhesive composition

Patent metadata

Field	Value
Publication number	US-10647889-B2
Application number	US-201615748071-A
Country	US
Kind code	B2
Filing date	Jul 28, 2016
Priority date	Jul 30, 2015
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

A two-component (meth) acrylic adhesive excellent in peel strength at low temperature and impact resistance is provided. A composition comprising components of (1) to (4): (1) a polymerizable vinyl monomer comprising (1-1) to (1-4); (2) a polymerization initiator; (3) a reducing agent; and (4) an elastomer having no polymerizable unsaturated double bond at the end and having 10 to 30 mol % of a (meth) acrylonitrile. A composition comprising components of (1) to (4): (1) a polymerizable vinyl monomer comprising (1-1) to (1-4); (2) a polymerization initiator; (3) a reducing agent; (4) an elastomer having a polymerizable unsaturated double bond at the end and having 10 to 30 mol % of a (meth) acrylonitrile; and (5) an elastomer having no polymerizable unsaturated double bond at the end.

First claim

The invention claimed is:

1. A composition comprising components of (1) to (5):
(1) a polymerizable vinyl monomer comprising (1-1) to (1-4);
(2) a polymerization initiator;
(3) a reducing agent;
(4) an elastomer having a polymerizabie unsaturated double bond at the end and having 10 to 30 mol % of a (meth) acrylonitrile; and
(5) an elastomer having no polymerizable unsaturated double bond at the end, wherein
(1-1) a compound represented by a General formula (A);
Z—O—(R 2 O) p —R 1   [General Formula (A)]

wherein in formula (A), Z represents a (meth) acryloyl group; R 1 represents a phenyl group or a phenyl group having an alkyl group having 1 to 3 carbon atoms; R 2 represents —C 2 H 4 —, —C 3 H 6 —, —CH 2 CH(CH 3 )—, —C 4 H 8 — or —C 6 H 12 —; and p represents an integer of 1 to 10
(1-2) a compound represented by a General Formula (B);
Z—O—(R 2 O) p —H  [General Formula (B)]

wherein in formula (B), Z, R 2 and p are as defined above (1-3) a compound represented by a General Formula (C); and

wherein in formula (C), Z represents a (meth) acryloyl group; R 2 represents —C 2 H 6 —, —C 3 H 6 —, —CH 2 CH(CH 3 )—, —C 4 H 8 — or —C 6 H 12 —; R 3 represents hydrogen or an alkyl group having 1 to 4 carbon atoms; and g represents a number of 0 or more
(1-4) a compound represented by a General Formula (0)
Z—O—R 4   [General Formula (D)]

wherein in formula (D), Z represents a (meth) acryloyl group, and R 4 represents an alkyl group having 3 to 16 carbon atoms.

2. The composition of claim 1 , wherein the elastomer of (5) has 10 to 30 mol % of a (meth) acrylonitrile.

3. The composition of claim 1 , wherein the elastomer (5) is a diene copolymer.

4. The composition of claim 1 , wherein a content ratio of the elastomer of (4) and the elastomer of (5) is (4):(5)=10 to 90:90 to 10 parts by mass when a total amount of (4) and (5) is 100 parts by mass.

5. The composition of claim 1 , wherein
the composition comprises 1 to 50 parts by mass of the elastomer of (4) with respect to 100 parts by mass of the polymerizable vinyl monomer of (1), and
the composition comprises 5 to 35 parts by mass of the elastomer of (5) with respect to 100 parts by mass of the polymerizable vinyl monomer of (1).

6. The composition of claim 1 , wherein
the polymerizable vinyl monomer of (1) comprises:
10 to 60 parts by mass of the compound of General Formula (A) of (1-1) with respect to 100 parts by mass of the polymerizable vinyl monomer of (1);
10 to 70 parts by mass of the compound of General Formula (B) of (1-2) with respect to 100 parts by mass of the polymerizable vinyl monomer of (1); and
1 to 30 parts by mass of the compound of General Formula (C) of (1-3) with respect to 100 parts by mass of the polymerizable vinyl monomer of (1); and
5 to 40 parts by mass of the compound of General Formula (D) of (1-4) with respect to 100 parts by mass of the polymerizable vinyl monomer of (1),
the composition comprises 1 to 50 parts by mass of the elastomer of (4) with respect to 100 parts by mass of the polymerizable vinyl monomer of (1), and
the composition comprises 5 to 35 parts by mass of the elastomer of (5) with respect to 100 parts by mass of the polymerizable vinyl monomer of (1).

7. The composition of claim 1 , wherein the composition further comprises a paraffin.

8. The composition of claim 1 , wherein the composition is a two-component composition comprising a first agent and a second agent, the first agent comprises at least the polymerization initiator of (2) and the second agent comprises at least the reducing agent of (3).

9. A curable resin composition comprising the composite of claim 1 .

10. An adhesive composition comprising the curable resin composition of claim 9 .

11. A joined body which adherends are bonded with the adhesive composition of claim 10 .

Assignees

• Denka Company Ltd

Inventors

• Miyazaki Hayato
• Fukao Kenji
• Uno Hiroki
• Goto Yoshitsugu

Classifications

• C09J4/06 Primary

  {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

• C09J5/00

  Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers · CPC title

• C08F279/02

  on to polymers of conjugated dienes · CPC title

• C08F2/44

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

• C09J2451/00

  Presence of graft polymer · CPC title