| abstract |
(57) [Abstract] [Problem] It has excellent vibration damping properties in the general living temperature range, In addition, the present invention provides a polymer material that provides a resin composition having excellent impact resistance and surface gloss. The present invention has a layer (I) inside and a layer (II) as an outermost layer, and the weight ratio of (I) / (II) is 60/40 to 95/5. Certain multilayer structured polymer particles. The layer (I) was formed by adding acrylic acid ester to 2-99. It consists of a copolymer of a monomer mixture containing 99% by weight and 0.01 to 10% by weight of a polyfunctional monomer, and the main dispersion of loss tangent (tan δ) of dynamic viscoelasticity shows a peak value. Temperature is 0 ℃ to 40 ℃, the peak value is 0.1 or more. Layer (II) Is a copolymer of a monomer mixture containing 40 to 99% by weight of methacrylic acid ester, and the temperature at which the main dispersion of tan δ shows a peak value is 50 ° C or higher. |