A photographic element comprising a light sensitive portion and an ultraviolet absorbing polymer comprising repeating units of a 2'-hydroxphenyl benzotriazole with a 5- or 6-substituent selected from halogen, cyano, carboxy or a sulfonyl, and a 4'-alkoxy group in which the alkylene portion of the alkoxy is linked, in sequence through a first optional bivalent linking group, then an oxygen, sulfur or amino group, then a second optional bivalent linking group, to the polymer chain, provided that the 3'-position is unsubsituted and the 4'-substituent does not have any -NH-, -OH or -SH substituents.
一种感光元件,包括感光部分和紫外线吸收聚合物,该聚合物包括 2'-羟苯基苯并三唑的重复单元,该重复单元具有选自卤素、
氰基、羧基或磺酰基的 5-或 6-取代基,以及 4'-烷氧基,其中烷氧基的亚烷基部分与 4'-烷氧基相连、依次通过第一个任选的二价连接基团、然后是氧、
硫或
氨基、然后是第二个任选的二价连接基团与聚合物链连接,前提是 3'- 位无取代基,且 4'- 取代基不含任何 -NH-、-OH 或 -SH 取代基。