申请人:Ciba-Geigy AG
公开号:US04335245A1
公开(公告)日:1982-06-15
New silver dye-bleach catalysts and the process for their manufacture are provided. These compounds have the general formula ##STR1## wherein A is an electron-withdrawing group and R.sub.1 and R.sub.2 are hydrogen, optionally substituted alkyl or optionally substituted aryl.
本发明提供了新的银染漂催化剂及其制造方法。这些化合物的一般式为##STR1##其中A是电子吸引基团,R.sub.1和R.sub.2是氢、可选的取代烷基或可选的取代芳基。