Patent ID: 7176258

Claim:
A water-based emulsion for vibration damper, comprising: particles formed of an acrylic copolymer (C) having a weight average molecular weight in the range of 20,000 to 130,000 and a glass transition point in the range of −30 to 0° C., and particles formed of an acrylic copolymer (D) having a weight average molecular weight in the range of 20,000 to 130,000 and a glass transition point in the range of 5 to 50° C., the ratio of the particles formed of the acrylic copolymer (C) being in the range of 50 to 70 mass % based on the solid component contained in the emulsion, and the ratio of the particles of the acrylic copolymer (D) being in the range of 50 to 30 mass % based on the solid component contained in the emulsion.