Patent ID: 6503974
Filing Date: 2003-01-07
Classification: C08L

Abstract:
A vibration-damping thermoplastic composition comprising (a) 50 to 90 wt % of an amorphous thermoplastic resin (component A) having a loss tangent (tan &dgr;) value measured at 40Â° C. and 18 Hz in accordance with JIS K7198 of 0.01 to 0.04 and a deflection temperature under load measured under a load of 1.82 MPa in accordance with ASTM D648 of not lower than 120Â° C. and (b) 50 to 10 wt % of a methyl methacrylate resin (Component B), wherein an article molded from the resin composition has the following physical properties (1) to (4), i.e., (1) a loss factor (&eegr;) of 0.04 to 0.08, (2) a water absorption measured when immersed in water at 23Â° C. for 24 hours in accordance with ASTM D570 of not higher than 0.20 wt %, (3) a specific gravity measured in accordance with JIS K7112 of 1.05 to 1.3, and (4) a deflection temperature under load measured under a load of 1.82 MPa in accordance with ASTM D648 of 110Â° C. to 170Â° C.