| 摘要 |
A polymeric composition is described which comprises an amount of one or more organic or inorganic components which are photosensitive and/or which are degraded by another ingredient of the composition and an amount of Ti0<SUB>2 </SUB>and/or ZnO which has been doped with a second element or the reduced ZnO, this composition having a rate of deterioration of UV light-sensitive physical factor at least 5% less than that of a composition having the same formulation except that it does not contain the said Ti0<SUB>2 </SUB>and/or ZnO which has been doped with a second element or the said ZnO. |
