申请人:Eastman Kodak Company
公开号:US04900653A1
公开(公告)日:1990-02-13
Dyes according to the formula: ##STR1## are useful as filter dyes in photographic elements. In this formula, n is 1 or 2. R.sub.1 and R.sub.2 are each independently substituted or unsubstituted alkyl or substituted or unbsubstituted aryl, or together represent the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered ring. Also, if R.sub.7 is substituted or unsubstituted alkyl, R.sub.1 is H. R.sub.3 is substituted or unsubstituted alkyl or aryl. R.sub.4 and R.sub.5 each independently represents H, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, secondary or tertiary amino, CO.sub.2 H, or NHSO.sub.2 R.sub.6, with the proviso that at least one of R.sub.4, R.sub.5, or a substituent on an aryl ring in R.sub.3, on an aryl ring in R.sub.4 or R.sub.5, on an aryl ring in R.sub.1 or R.sub.2, or on an aryl ring formed by R.sub.1 and R.sub.2 is CO.sub.2 H or NHSO.sub.2 R.sub.6. R.sub.6 is substituted or unsubstituted alkyl or substituted or unsubstituted aryl. R.sub.7 is substituted or unsubstituted alkyl, or together with R.sub.8 forms a double bond. R.sub.8 is H or together with R.sub.7 forms a double bond.
根据公式:##STR1##染料可用作摄影元素中的滤色镜染料。在该公式中,n为1或2。R.sub.1和R.sub.2分别独立地取代或未取代的烷基或取代或未取代的芳基,或者一起表示完成取代或未取代的5-或6-成员环所需的原子。此外,如果R.sub.7是取代或未取代的烷基,则R.sub.1为H。R.sub.3是取代或未取代的烷基或芳基。R.sub.4和R.sub.5分别独立地表示H,取代或未取代的烷基,取代或未取代的芳基,二级或三级氨基,CO.sub.2 H或NHSO.sub.2 R.sub.6,但须至少有R.sub.4,R.sub.5或R.sub.3中的芳环取代基,R.sub.4或R.sub.5中的芳环取代基,R.sub.1或R.sub.2形成的芳环,或由R.sub.1和R.sub.2形成的芳环中的取代基之一是CO.sub.2 H或NHSO.sub.2 R.sub.6。R.sub.6是取代或未取代的烷基或取代或未取代的芳基。R.sub.7是取代或未取代的烷基,或与R.sub.8形成双键。R.sub.8为H或与R.sub.7一起形成双键。