发明授权
- 专利标题: Color-providing compounds
- 专利标题(中): 提供色彩的化合物
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申请号: US815281申请日: 1997-03-10
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公开(公告)号: US5717079A公开(公告)日: 1998-02-10
- 发明人: Peter Viski , David P. Waller
- 申请人: Peter Viski , David P. Waller
- 申请人地址: MA Cambridge
- 专利权人: Polaroid Corporation
- 当前专利权人: Polaroid Corporation
- 当前专利权人地址: MA Cambridge
- 主分类号: C07D277/04
- IPC分类号: C07D277/04 ; C07D295/22 ; C07D417/12 ; C09B29/00 ; C09B69/00 ; G03C1/498 ; G03C8/10 ; G03C8/40 ; C09B29/28 ; C09B29/50 ; C09B57/14
摘要:
There are described color-providing compounds having at least two cyclic 1,3-sulfur-nitrogen moieties and one complete dye or dye intermediate. The color-providing compound is stable in the photographic processing composition but capable of undergoing cleavage in the presence of an imagewise distribution of silver ions and/or soluble silver complex made available as a function of development to liberate a complete dye or dye intermediate in an imagewise distribution corresponding to that of the silver ion and/or the soluble silver complex. The color-providing compounds are useful as image-forming materials in color photographic, photothermographic, thermographic, and other processes.
公开/授权文献
- US5362379A Open-bottomed cyclone with gas inlet tube and method 公开/授权日:1994-11-08