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    • 1. 发明授权
    • Photographic elements containing infrared filter dyes
    • 含红外线滤光片的摄影元素
    • US4876181A
    • 1989-10-24
    • US166135
    • 1988-03-10
    • Gary S. ProehlAnthony D. GingelloDavid J. CollettRichard L. PartonDavid A. StegmanAnthony Adin
    • Gary S. ProehlAnthony D. GingelloDavid J. CollettRichard L. PartonDavid A. StegmanAnthony Adin
    • C09B23/08G03C1/83
    • C09B23/086G03C1/832
    • A dye useful for absorbing infrared radiation in photographic elements, having the structure: ##STR1## is disclosed. In this formula R.sub.1 and R.sub.2 each independently represents sulfoalkyl, carboxyalkyl, or sulfatoalkyl of from 3 to 6 carbon atoms, having at least 3 carbon atoms in the alkyl chain between the nitrogen atom of each Z ring and the sulfo or sulfato group, and at least 2 carbon atoms in the alkyl chain between the nitrogen atom of each Z ring and the carboxy group.R.sub.3 and R.sub.5 are each hydrogen or together represent the atoms necessary to complete 5- or 6-membered carbocyclic ring, and R.sub.4 represents hydrogen, alkyl of 1 to 4 carbon atoms, aryl, cyano, halogen, or ##STR2## where R.sub.6 and R.sub.7 each independently represents alkyl of from 1 to 6 carbon atoms or aryl, or together represent the non-metallic atoms necessary to form a 5- or 6-membered ring.X.sym. represents a cation.Z.sub.1 and Z.sub.2 each independently represent the atoms needed to complete an indole, naphthindole or benzindole nucleus.
    • 公开了一种用于吸收照相元件中的红外辐射的染料,具有以下结构:。 在该式中,R 1和R 2各自独立地表示在每个Z环的氮原子和磺基或硫酸根之间的烷基链中具有至少3个碳原子的3至6个碳原子的磺基烷基,羧烷基或硫酸根烷基, 每个Z环的氮原子和羧基之间的烷基链中的至少2个碳原子。 R 3和R 5各自为氢或一起代表完成5-或6-元碳环所必需的原子,并且R 4表示氢,1-4个碳原子的烷基,芳基,氰基,卤素或者其中R 6和R 7 各自独立地表示1至6个碳原子的烷基或芳基,或一起表示形成5-或6-元环所必需的非金属原子。 X(+)表示阳离子。 Z1和Z2各自独立地表示完成吲哚,萘啶或萘吲哚核所需的原子。