发明授权
- 专利标题: Photographic stabilizers with 1-phenyl-3-pyrazolidinone moieties
- 专利标题(中): 具有1-苯基-3-吡唑啉酮的摄影稳定剂
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申请号: US654682申请日: 1991-02-13
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公开(公告)号: US5156940A公开(公告)日: 1992-10-20
- 发明人: Piet Kok , Jos A. Vaes , Jean-Marie O. Dewanckele , Luc J. Wabbes
- 申请人: Piet Kok , Jos A. Vaes , Jean-Marie O. Dewanckele , Luc J. Wabbes
- 申请人地址: BEX Mortsel
- 专利权人: AGFA-Gevaert, N.V.
- 当前专利权人: AGFA-Gevaert, N.V.
- 当前专利权人地址: BEX Mortsel
- 优先权: EPX90200458 19900226
- 主分类号: C07D403/10
- IPC分类号: C07D403/10 ; C07D403/12 ; C07D405/12 ; C07D413/12 ; C07D417/12 ; G03C1/34 ; G03C8/06 ; G03C8/08 ; G03F7/07
摘要:
A new class of photographic stabilizers is prepared and their use in photographic materials is disclosed. These compounds are 1-phenyl-3-pyrazolidinone derivatives corresponding to following general formula: ##STR1## wherein: A represents a group capable of adsorbing at the surface of silver halides;L is a divalent linking group and r is 0 or 1;R1 and R2 each represent hydrogen, lower alkyl or substituted lower alkyl.The photographic materials containing the substances of the invention are preferably DTR mono-sheet elements which after processing can serve as planographic printing plates.
公开/授权文献
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