发明授权
US4749643A Photographic recording element containing a UV absorbent and a silver halide emulsion layer 失效
含有UV吸收剂和卤化银乳剂层的照相记录元件

Photographic recording element containing a UV absorbent and a silver
halide emulsion layer
摘要:
Compounds with the structural unit ##STR1## are very valuable UV absorbents, especially in photographic recording materials.
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