| 摘要 |
<p>A photo-stabilized polymer composition comprising a polymer and as an ultraviolet absorber, at least one compound selected from specific cyclic imino esters having an aromatic nucleus, two carbon atoms of which forms a part of the imino ester ring, such as 2,2'-p-phenylene bis(3,1-benzoxazin-4-one), or2,8-dimethyl-4H,6H-benzo¢1,2-d:5,4-d'!bis-¢1,3!-oxazine-4,9-dione, in the unreacted state. The ultraviolet absorber has excellent stability to heat and oxidation, and is useful, for example, for protecting from ultraviolet light a molded article of a polymer whose deterioration by ultraviolet light is required to be retarded or prevented or for protecting from ultraviolet light an object subject to deleterious effects under ultraviolet light.</p> |
