发明授权
- 专利标题: Azo dye developers comprising furan rings
- 专利标题(中): 包含呋喃环的偶氮染料显影剂
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申请号: US486730申请日: 1974-07-08
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公开(公告)号: US3994731A公开(公告)日: 1976-11-30
- 发明人: Yukio Maekawa , Shinsaku Fujita , Kazuya Sano , Seiki Sakanoue
- 申请人: Yukio Maekawa , Shinsaku Fujita , Kazuya Sano , Seiki Sakanoue
- 申请人地址: JA Minami-ashigara
- 专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人地址: JA Minami-ashigara
- 优先权: JA48-76226 19730706
- 主分类号: C09B29/34
- IPC分类号: C09B29/34 ; G03C8/10 ; G03C8/18 ; G03C1/76 ; G03C1/10 ; G03C1/40 ; G03C7/00
摘要:
A dye developer represented by the following general formula (I), ##SPC1##wherein X is a hydrogen atom, a bromine atom, a nitro group, an acylamino group, a hydroxyl group or an alkyl group having not more than 4 carbon atoms; n is 1, 2 or 3; Y is an acyl group having not more than 4 carbon atoms; and Ar is a mono- or polyaryl group; and wherein an aromatic ring can be condensed in the 4-and 5-positions of the furan ring nucleus, and at least one of X, the aromatic ring condensed with the furan ring nucleus and Ar being directly connected to or being connected through an atom or an atomic grouping to a polyphenol having developing activity for silver halide.
公开/授权文献
- US5590792A Screening machine 公开/授权日:1997-01-07
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