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Photographic peracid bleaching composition and processing method using ternary iron carboxylate complexes as catalysts in peracid bleaching solutions
Photographic peracid bleaching composition and processing method using ternary iron carboxylate complexes as catalysts in peracid bleaching solutions
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机译:三元羧酸铁配合物作为催化剂在过酸漂白液中的照相过酸漂白组合物和加工方法
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摘要
A photographic peracid bleaching composition contains a peracid bleaching agent, and a water-soluble ternary complex of ferric ion, a polycarboxylate ligand, and a second ligand which has at least one carboxyl group on an aromatic nitrogen heterocycle, such as a pyridinecarboxylic acid. These complexes act as catalysts for the peracid bleaching agent. Preferred complexes are biodegradable, but all of the ternary complexes can be used in a variety of peracid bleaching processes to good advantage.
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