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21. 发明授权

US4983506A Silver halide photographic material 失效
标题翻译：卤化银照相材料
公开(公告)号：US4983506A
公开(公告)日：1991-01-08
申请号：US257665
申请日：1988-10-14
申请人： Shigetoshi Ono , Hirokazu Kondo , Yoshisada Nakamura
发明人： Shigetoshi Ono , Hirokazu Kondo , Yoshisada Nakamura
IPC分类号： G03C7/396
CPC分类号： G03C7/396
摘要： A silver halide photographic material is described, containing at least one polymer, which functions as both a color fogging preventing agent and a color mixing preventing agent, obtained by polycondensation of at least one compound represented by formula (I) and at least one compound represented by formula (II): ##STR1## wherein G represents hydroxyl group, a group capable of forming hydroxyl group by alkali hydrolysis, a carbonamido group or a sulfonamido group;n represents an integer of 1 or more, provided that when n is 2 or more, plural G's may be same or different;R.sup.1 and R.sup.2 each independently represents hydrogen atom or a substituent; andR.sup.3 and R.sup.4 each independently represents hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a heterocyclic group, an acyl group, a carboxyl group, or a formyl group,in the presence of an acid or alkali catalyst.
摘要翻译：描述了含有至少一种聚合物的卤化银照相材料，该聚合物用作至少一种由式（I）表示的化合物与至少一种表示的化合物的化合物缩聚得到的防着色剂和防混色剂，（II）其中G表示羟基，能够通过碱水解形成羟基的基团，碳酰氨基或亚磺酰氨基; n表示1以上的整数，条件是当n为2以上时，可以相同或不同， R1和R2各自独立地表示氢原子或取代基; 在酸或碱催化剂的存在下，R 3和R 4各自独立地表示氢原子，烷基，芳基，芳烷基，杂环基，酰基，羧基或甲酰基。

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