发明名称 |
TRIARYLMETHANE DYES, PHOTOGRAPHIC RECORDING MATERIALS, A PROCESS IN WHICH THEY ARE USED, AND METHODS FOR FORMING TRIARYLMETHANE DYES |
摘要 |
Novel compounds are disclosed which have the formula <CHEM> wherein A is a phenyl moiety or a naphthyl moiety; B is a 4 min -oxo-1 min -phenyl moiety or 4 min -oxo-1 min -naphthyl moiety and X is a non-nucleophilic group that cannot add to the central carbon atom but in alkaline solution undergoes an irreversible cleavage reaction with base to provide a nucleophilic moiety that adds to the central carbon atom to form a ring-closed compound which is colourless. The compounds may be included in photographic products comprising a support, at least one photosensitive silver halide emulsion layer and a layer containing the coloured compound and during development of such products with an aqueous alkaline processing composition the group X cleaves to form a ring closed colourless compound. |
申请公布号 |
DE3067222(D1) |
申请公布日期 |
1984.04.26 |
申请号 |
DE19803067222 |
申请日期 |
1980.12.19 |
申请人 |
POLAROID CORPORATION |
发明人 |
FOLEY, JAMES WALTER |
分类号 |
C09B11/06;C09B11/10;G03C1/83;G03C8/48;(IPC1-7):C09B11/06;G03C1/84;G03C5/54 |
主分类号 |
C09B11/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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