发明公开
EP0018317A1 Pyridine-2,3,6-triones, process for their manufacture, their use as silver dye-bleach catalysts and photographic process
失效
吡啶-2,3,6-三酮，它们的制备方法，它们作为催化剂的银染料漂白方法和摄影过程中使用。
- 专利标题： Pyridine-2,3,6-triones, process for their manufacture, their use as silver dye-bleach catalysts and photographic process
- 专利标题（中）： 吡啶-2,3,6-三酮，它们的制备方法，它们作为催化剂的银染料漂白方法和摄影过程中使用。
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申请号： EP80810092.9申请日： 1980-03-20
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公开(公告)号： EP0018317A1公开(公告)日： 1980-10-29
- 发明人: Long, William Edward
- 申请人： CIBA-GEIGY AG
- 申请人地址： Klybeckstrasse 141 4002 Basel CH
- 专利权人： CIBA-GEIGY AG
- 当前专利权人： CIBA-GEIGY AG
- 当前专利权人地址： Klybeckstrasse 141 4002 Basel CH
- 优先权： GB7910539 19790326
- 主分类号： C07D213/85
- IPC分类号： C07D213/85 ; C07D213/82 ; G03C5/52
摘要：
New silver dye-bleach catalysts and the process for their manufacture are provided. These compounds have the general formula
wherein A is an electron-withdrawing group and R 1 and R 2 are hydrogen, optionally substituted alkyl or optionally substituted aryl.
wherein A is an electron-withdrawing group and R 1 and R 2 are hydrogen, optionally substituted alkyl or optionally substituted aryl.
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