Saiden Chemical Industry Co., Ltd.

Koji Abe

Kenichiro Ishimoto

Provided is a resin emulsion for a damping paint, the resin emulsion being capable of contributing to formation of a coating film to which swelling and peeling are unlikely to occur and having favorable mechanical stability. The resin emulsion for a damping paint contains a (meth)acrylic resin particle including a particle obtained by polymerizing a monomer component containing 50% by mass or more of a (meth)acrylic acid ester and an adsorbed protective layer obtained by allowing a polycarboxylic acid-based polymer compound having a structural unit derived from a carboxylic acid, or a salt or anhydride thereof to be adsorbed onto the surface of the particle. The (meth)acrylic resin particle has a ratio of an average particle diameter Dby means of a laser diffraction/scattering method to an average particle diameter Dby means of a dynamic light scattering method, D/D, of less than 1.

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Saitama, Japan

Koji Abe