Patent ID: 11945891
Assignee: DENKA COMPANY LIMITED
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 0:
1. A speaker, comprising:
a corn;
a voice coil;
a damper material; and
an adhesive composition bonded on the corn, the voice coil and the damper material;
wherein the adhesive composition excludes a (meth)acrylic acid, and the adhesive composition comprises the following components (1) to (5):
(1) a polymerizable vinyl monomer containing 10 to 70 parts by mass of (1-1), 10 to 60 parts by mass of (1-2), and 10 to 60 parts by mass of (1-3) based on 100 parts by mass of (1) the polymerizable vinyl monomer, wherein
(1-1) is a (meth)acrylic monomer represented by the formula (A)

Z—O—R1   Formula (A), wherein, Z represents a (meth)acryloyl group, and R1 represents unsubstituted alkyl group,
(1-2) is a (meth)acrylic monomer represented by the formula (B), wherein, Z and Z′ represent a (meth)acryloyl group, and R2 and R2′ represent an alkylene group; R2 and R2′ may be the same as or different from one another; R3 and R3′ represent a hydrogen atom, or an alkyl group having 1 to 4 carbon atoms; R3 and R3′ may be the same as or different from one another; m+n is in a range of 0 to 40;
(1-3) is a (meth)acrylic monomer that is a (meth)acrylic acid ester of a polyhydric alcohol;
(2) a thermal radical polymerization initiator;
(3) a photo-radical polymerization initiator;
(4) at least one of the group consisting of an aromatic amine compound and a pyridine derivative compound; and
(5) an organic metal salt.