申请人:Ciba-Geigy AG
公开号:US04362878A1
公开(公告)日:1982-12-07
Development inhibitor releasing compounds of the formula: ##STR1## are provided wherein R.sub.1 is hydrogen or a substituent which may contain a long chain ballasting group and n is 1 or 2, or R.sub.1 may form an annelated ring, R.sub.2 is hydrogen or alkyl having 1 to 4 carbon atoms, R.sub.3 is alkyl, aryl or aralkyl, Y is hydrogen, halogen, optionally substituted phenyl, --COOR.sub.4, --COR.sub.4, ##STR2## or --OR.sub.4 where R.sub.4 is alkyl or aryl or a group ##STR3## where Z represents the atoms necessary to complete an optionally substituted 5- or 6-membered heterocyclic ring which optionally may be benzannelated. The new DIR-compounds form colorless compounds when reacted with the oxidation products of the color developing agent. They have an extremely high reactivity with the oxidation products of the color developing agent so that only small quantities of the DIR-compounds are required to produce excellent intra-image and inter-image effects of excellent speed.
提供以下公式的开发抑制剂释放化合物:##STR1## 其中R.sub.1是氢或可能包含长链配基基团的取代基,n为1或2,或R.sub.1可能形成一个环状环,R.sub.2是氢或具有1至4个碳原子的烷基,R.sub.3是烷基,芳基或芳基烷基,Y是氢,卤素,可选取代的苯基,--COOR.sub.4,--COR.sub.4,##STR2##或--OR.sub.4,其中R.sub.4是烷基或芳基或一个组##STR3##其中Z代表完成可选取代的5或6元杂环环所需的原子,该环可以是苯环。新的DIR化合物与颜色发展剂的氧化产物反应时形成无色化合物。它们与颜色发展剂的氧化产物具有极高的反应性,因此只需要少量的DIR化合物即可产生出色的内部图像和图像之间的效果和速度。