| 摘要 |
PURPOSE:To obtain the title plastic readily degradable by exposure to sunlight or ultraviolet rays by adding a specific polyolefin to a polyethylene to give a resin composition and irradiating the composition with electron rays in the presence of oxygen during molding, etc. CONSTITUTION:0.1-10 polyolefin (preferably a polymer obtained by polymerizing a monomer containing conjugated double bond, such as 1,2-polybutadiene) containing an unsaturated bond as a photosensitizer is added to a polyethylene (preferably low-density polyethylene) to give a resin composition, which is irradiated with electron rays in the presence of oxygen during or after molding to give the objective plastic. |
