| 摘要 |
PURPOSE:To provide the subject resin foam particles composed of a specified alpha-olefin-propylene copolymer and a specified ethylene-based copolymer, having a prescribed shear-sensitivity and a uniform and relatively large cell diameter, excellent in visual appearance, heat resistance and compression strength and useful as a foamed-in-place material, etc. CONSTITUTION:The objective resin foam particles are produced from a resin composition as the base resin, composed of (A) 100 pts.wt. alpha-olefin-propylene copolymer containing, as its constituting component, a 4 to 8C alpha-olefin such as butene-1 and (B) preferably 5 to 100 pts.wt. ethylene-based copolymer containing, as the constituting component, an unsaturated ester such as vinyl acetate or an unsaturated ether such as vinyl methyl ether and having 0.3 to 0.70 shear-sensitivity of viscosity measured at 200 deg.C. |
