| abstract |
There is no need to use various adhesives in bonding between a diaphragm or a frame and an edge of a speaker, and a speaker edge having high internal loss (TanĪ“) is provided, and as a raw material for the speaker edge, To provide a curable vibration damping material for speaker edge that can be applied directly to the edge portion of a speaker using a dispenser and then cured by heat or active energy rays. SOLUTION: (A) A curable urethane liquid oligomer having a polymerizable unsaturated group and (B) the following general formula (I) (Wherein R 1 is a hydrogen atom or a methyl group, R 2 is a heterocyclic group, and R 3 is an alicyclic hydrocarbon group or a hydrocarbon group having a specific structure.) A curable vibration damping material for speaker edges, comprising a (meth) acrylic monomer represented by: [Selection figure] None |