Patent ID: 8198362

Claim:
A vibration damping material comprising: a polyester resin containing dicarboxylic acid constitutional units and diol constitutional units; and mica being dispersed in the polyester resin, wherein: (1) a ratio [(A 1 +B 1 )/(A 0 +B 0 )] of a total of (A 1 ) a number of the dicarboxylic acid constitutional units having an odd number of carbon atoms in a polyester main chain and (B 1 ) a number of the diol constitutional units having an odd number of carbon atoms in the polyester main chain with respect to a total of (A 0 ) a number of total dicarboxylic acid constitutional units and (B 0 ) a number of total diol constitutional units in the polyester resin is in the range of 0.5 to 1; and (2) an average particle diameter calculated from a volume-based particle diameter frequency distribution of the mica in the vibration damping material is 25 to 500 μm.