发明名称 Stabilised peroxide bleaching solutions and their use for processing of photographic elements
摘要 <p>Color photographic elements are bleached after exposure and development by using a hydrogen peroxide bleaching solution. This solution comprises a hydrogen peroxide bleaching agent, chloride ions in an amount of at least 0.35 mol/l, a first acidic compound which is an organic phosphonic acid or a salt thereof, and a second acidic compound which is either a 2-pyridinecarboxylic acid or 2,6-pyridinedicarboxylic acid (or a salt thereof), or a polyaminocarboxylic acid having one or more secondary amines at a pH of 8 to 11 (or a salt thereof). The bleaching solution is stabilized by the presence of the two acidic compounds. &lt;IMAGE&gt;</p>
申请公布号 EP0738919(A2) 申请公布日期 1996.10.23
申请号 EP19960200947 申请日期 1996.04.15
申请人 EASTMAN KODAK COMPANY 发明人 HAYE, SHIRLEYANNE ELIZABETH;REYES, MAYRA BEATRIZ
分类号 C11D7/54;G03C7/42;G03C7/00;(IPC1-7):G03C7/42 主分类号 C11D7/54
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