Adhesive composition

Patent metadata

Field	Value
Publication number	US-11098225-B2
Application number	US-201716319115-A
Country	US
Kind code	B2
Filing date	Jul 19, 2017
Priority date	Jul 19, 2016
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

Provided is an adhesive composition having high adhesiveness to polyamides. An adhesive composition for bonding adherends comprising a polyamide, comprising the following components (1) to (4): (meth)acrylates (1), excluding the component (2), comprising the following ingredients (1-1), (1-2), and (1-3): a (meth)acrylate (1-1), excluding an ingredient (1-3), having an aromatic group; a (meth)acrylate (1-2) having a hydroxy group; and a (meth)acrylate (1-3) represented by general formula (A); an acidic phosphate compound (2); a polymerization initiator (3); and a reducing agent (4) comprising a transition metal salt.

First claim

The invention claimed is:

1. An adhesive composition for bonding adherends comprising a polyamide, comprising the following components (1) to (4):
(meth)acrylates (1), excluding the component (2), comprising the following ingredients (1-1), (1-2), and (1-3):
a (meth)acrylate (1-1) represented by general formula (B), excluding an ingredient (1-3)

wherein Z represents a (meth)acryloyl group, and R 3 represents a hydrogen atom, a halogen atom, an alkyl group with 1 to 12 carbon atoms, or an alkoxy group with 1 to 12 carbon atoms;
a (meth)acrylate (1-2) having a hydroxy group; and
a (meth)acrylate (1-3) represented by general formula (A);

(wherein Z and Z′ each represent a (meth)acryloyl group, and Z and Z′ are the same or different; R1 and R1′ each represent an alkylene group, and R1 and R1′ are the same or different; R2 and R2′ each represent hydrogen or an alkyl group with 1 to 4 carbon atoms, and R2 and R2′ are the same or different; and p and p″ each represent an integer from 0 to 8, and p and p′ are the same or different);
an acidic phosphate compound (2);
a polymerization initiator (3); and
a reducing agent (4) comprising a transition metal salt.

2. The adhesive composition according to claim 1 , wherein the acidic phosphate compound (2) is an acidic phosphate compound represented by general formula (C):

(wherein R 4 represents a CH 2 ═CR 5 CO(0R 6 ) m— group (where R 5 represents hydrogen or a methyl group, R 6 represents —C 2 H 4 —, —C 3 H 6 —, —CH 2 CH(CH 3 )—, —C 4 H 8 —, —C 6 H 12 —, or

and m represents an integer from 1 to 10), and n represents an integer of 1 or 2).

3. The adhesive composition according to claim 1 , wherein the polymerization initiator (3) is a thermal radical polymerization initiator.

4. The adhesive composition according to claim 1 , wherein the reducing agent (4) is vanadyl acetylacetonate.

5. The adhesive composition according to claim 1 , further comprising an elastomer (5).

6. The adhesive composition according to claim 1 , wherein the polyamide is at least one selected from the group consisting of nylon 6 and nylon 6,6.

7. The adhesive composition according to claim 1 , wherein the polyamide comprises a filling material.

8. The adhesive composition according to claim 7 , wherein the filling material is an inorganic fiber.

9. A two-part adhesive composition, wherein the adhesive composition according to claim 1 is separated into:
a first part comprising at least the polymerization initiator (3); and
a second part comprising at least the reducing agent (4).

10. A laminate having adherends at least one of which is a polyamide sheet or plate and an adhesive layer formed of the adhesive composition according to claim 1 between the adherends.

Assignees

• Denka Company Ltd

Inventors

• Sasaki Makiko
• Hoshino Takako
• Nakajima Gosuke

Classifications

• C09J4/00 Primary

  Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond {; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16} · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• C09J201/00

  Adhesives based on unspecified macromolecular compounds · CPC title

• B32B27/34

  comprising polyamides · CPC title

• B32B27/20

  using fillers, pigments, thixotroping agents · CPC title