| 摘要 |
PURPOSE:To obtain the title composition which is improved in radiation resistance, flame retardancy and blooming resistance without lowering its good mechanical properties and flexibility, by mixing a thermoplastic polyurethane with a brominated epoxidized oligomer, Sb2O3 and an ultraviolet absorber in a specified mixing ratio. CONSTITUTION:100 pts.wt. thermoplastic polyurethane of a polyether, polycarbonate, caprolactone ester or the like type is mixed with 10-75 pts.wt. brominated epoxidized oligomer [e.g., a compound of the formula (wherein R and R' are each a 1-7C hydrocarbon group, and n is a positive integer)], 5-50 pts.wt. Sb2O3 and 1-20 pts.wt. ultraviolet absorber such as a benzotriazole or benzophenone compound as a radiation-shielding agent. |
