| 摘要 |
<p>A plastic composition degradable under the influence of weather or light, comprising a plastic material and finely divided titanium dioxide with a specific surface of more than about 20 m2/g. Preferably the titanium dioxide is obtained by hydrolyzing titanium sulfate in aqueous solution, has a predominantly anatase structure, a lightening power of less than about 400, a specific surface of about 60 to 400 m2/g and is present in about 0.5 to 5% by weight of the composition, and the plastic material is selected from the group consisting of polyethylene, ethylene-vinyl acetate copolymer, polystyrene, polyvinyl chloride, polyamides and ABS-polymers.</p> |
