The purpose of the present invention is to provide a coating material having excellent mechanical stability, whereby it is possible to obtain a coating film having excellent appearance and being capable of demonstrating excellent damping properties in a wide range of temperatures. The present invention is a damping-imparting agent including a compound having a sulfosuccinic acid (salt) skeleton. The present invention is also a resin composition for a damping material including an emulsion obtained by polymerizing a monomer component, the composition furthermore being a resin composition for a damping material including a component having a sulfosuccinic acid (salt) skeleton.
