首页> 外国专利> Biodegradable bleach bath for photographic silver halide material - contg. ferric salt, chloride, persulphate, nitrate and hydroxy cpd. and/or amine

Biodegradable bleach bath for photographic silver halide material - contg. ferric salt, chloride, persulphate, nitrate and hydroxy cpd. and/or amine

机译:用于照相卤化银材料的可生物降解的漂白液-续铁盐,氯化物,过硫酸盐,硝酸盐和羟基cpd。和/或胺

摘要

Bleach bath for treating colour photographic Ag halide (AgX) materials contains (a) a Fe(III) salt, (b) a chloride, (c) a persulphate, (d) a nitrate and (e) a hydroxy cpd and/or an amino cpd. The bath is free from bromide. It may also contain a chelating agent or a hydroxy cpd also having a chelating function. The pref amts are 0.005-0.2 mole/1 Fe(III) ions, 0.05-1 mole/1 chloride, 0.01-0.5 mole/1 persulphate, 0.05-1.5 mole/1 nitrate, 0.001-0.5 mole/1 hydroxy or amino cpd and 0-0.6 mol/1 chelating agent. cpd (e) pref is glycerol, (di)ethylene glycol, glucose, fructose, sorbitose, tartaric acid, citric acid, salicyclic acid, ethylene diamine, propylene diamine and/or hexamethylene diamine. USE/ADVANTAGE - The bleach bath is esp environmentally friendly, since the components are readily biodegradable. It is esp suitable for bleaching AgX materials with a reflective base.
机译:用于处理彩色卤化银(AgX)材料的漂白浴包含(a)Fe(III)盐,(b)氯化物,(c)过硫酸盐,(d)硝酸盐和(e)羟基cpd和/或氨基cpd。该浴不含溴化物。它还可以包含也具有螯合功能的螯合剂或羟基cpd。优选的是0.005-0.2摩尔/ 1 Fe(III)离子,0.05-1摩尔/ 1氯,0.01-0.5摩尔/ 1过硫酸盐,0.05-1.5摩尔/ 1硝酸盐,0.001-0.5摩尔/ 1羟基或氨基cpd和0-0.6mol / 1螯合剂。 cpd(e)优选为甘油,(二)乙二醇,葡萄糖,果糖,山梨糖,酒石酸,柠檬酸,水杨酸,乙二胺,丙二胺和/或六亚甲基二胺。使用/优点-漂白液尤其对环境友好,因为这些组分易于生物降解。它尤其适用于用反射性基材漂白AgX材料。

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