发明授权
US5989798A Combinations of purine-releasing pyrazolone DIR couplers and pyrazolone
or pyrazolotriazole imaging couplers
失效
嘌呤释放吡唑啉酮DIR成色剂和吡唑啉酮或吡唑并三唑成像剂的组合
- 专利标题： Combinations of purine-releasing pyrazolone DIR couplers and pyrazolone or pyrazolotriazole imaging couplers
- 专利标题（中）： 嘌呤释放吡唑啉酮DIR成色剂和吡唑啉酮或吡唑并三唑成像剂的组合
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申请号： US994663申请日： 1997-12-19
-
公开(公告)号： US5989798A公开(公告)日： 1999-11-23
- 发明人: Paul B. Merkel , Jerrold N. Poslusny , David A. Steele
- 申请人： Paul B. Merkel , Jerrold N. Poslusny , David A. Steele
- 申请人地址： NY Rochester
- 专利权人： Eastman Kodak Company
- 当前专利权人： Eastman Kodak Company
- 当前专利权人地址： NY Rochester
- 主分类号： G03C7/24
- IPC分类号： G03C7/24 ; G03C7/305 ; G03C7/32 ; G03C7/38 ; G03C7/384 ; G03C1/08 ; G03C7/26
摘要：
A photographic element comprises: (a) a support; and (b) at least one silver halide emulsion layer; wherein said emulsion layer contains (c) at least one magenta dye-forming pyrazolone DIR coupler of structure I; and (d) at least one magenta dye-forming imaging coupler of structure II, structure IIIa or structure IIIb, below: ##STR1## wherein the substituents are as defined in the specification.
公开/授权文献
- US5319147A Process for the neutralization of perfluoropolyoxyalkylenes 公开/授权日：1994-06-07
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