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    • 3. 发明授权
    • Process for the reduction of heavy metal ions in excess from aqueous
synthesis solutions of water soluble heavy metal complex dyestuffs
    • 从水溶性重金属络合物染料的水合物溶液中还原过量的重金属离子的方法
    • US4963660A
    • 1990-10-16
    • US238359
    • 1988-08-30
    • Uwe MrotzeckPeter MischkeGunther SchwaigerWerner RussManfred Sittig
    • Uwe MrotzeckPeter MischkeGunther SchwaigerWerner RussManfred Sittig
    • C09B45/01C09B67/54
    • C09B67/0096C09B45/01
    • Free radical heavy metal ions in water-soluble heavy metal complex dyestuffs are removed from the synthesis solution of the heavy metal complex dyestuff by means of a compound or several of the compounds mentioned below:(a) saturated and unsaturated fatty acids having about 8 to 18 carbon atoms and water-soluble salts thereof;(b) the monoesters and diesters of orthophosphoric acid and salts thereof corresponding to the general formula (1a) and (1b) ##STR1## in which R denotes a saturated or unsaturated aliphatic radical having about 8 to 18 carbon atoms and M stands for a hydrogen atom or a salt-forming, water-solubilizing metal;(c) aliphatic sulfonic acids and water-soluble salts thereof corresponding to the general formula (2)R--SO.sub.3 M (2) in which R and M have the abovementioned meanings;(d) aliphatic phosphonic acids and monoesters thereof and also water-soluble salts thereof corresponding to the general formulae (3a) and (3b) ##STR2## in which R and M have the abovementioned meanings; (e) malonic acid and water-soluble salts thereof;(f) trimercapto-s-triazine, 2-aminobenzoic acid, 8-hydroxyquinoline and water-soluble salts of these compounds;(g) water-soluble sulfides, in particular alkali metal sulfides;(h) functionalized water-insoluble polymers which react with metal ions by the ion-exchanger principle or form metal chelate complexes.Using these compounds, the excess heavy metal ions are precipitated out of the synthesis solution or separated off, without the heavy metal ions bound as a complex in the dye being attached.
    • 通过化合物或下列几种化合物,从重金属络合物染料的合成溶液中除去水溶性重金属络合物染料中的自由基重金属离子:(a)饱和和不饱和脂肪酸,其具有约8〜 18个碳原子及其水溶性盐; (b)对应于通式(1a)和(1b)的正磷酸及其盐的单酯和二酯及其盐,其中R表示具有约8至18个碳原子的饱和或不饱和脂肪族基团,M代表 氢原子或成盐的水溶性金属; (c)对应于通式(2)R-SO 3 M(2)的脂族磺酸及其水溶性盐,其中R和M具有上述含义; (d)脂肪族膦酸及其单酯,以及对应于通式(3a)和(3b)的化合物的水溶性盐,其中R和M具有上述含义; (e)丙二酸及其水溶性盐; (f)这些化合物的三聚巯基-s-三嗪,2-氨基苯甲酸,8-羟基喹啉和水溶性盐; (g)水溶性硫化物,特别是碱金属硫化物; (h)通过离子交换原理与金属离子反应的官能化水不溶性聚合物,或形成金属螯合物。 使用这些化合物,过量的重金属离子从合成溶液中沉淀出来或分离出来,而不附着染料中重金属离子作为络合物结合。