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1. 发明授权

US4085097A Process for the manufacture of chromium complexes from metallizable azo or azo methine dyes 失效
标题翻译：从金属化偶氮或偶氮次甲基染料制造铬络合物的方法
公开(公告)号：US4085097A
公开(公告)日：1978-04-18
申请号：US647268
申请日：1976-01-07
申请人： Fabio Beffa , Arthur Buhler , Peter Donath , Hans Ulrich Schutz , Gerhard Back
发明人： Fabio Beffa , Arthur Buhler , Peter Donath , Hans Ulrich Schutz , Gerhard Back
IPC分类号： C09B45/01 , C09B45/16 , C09B45/06 , C09B45/34 , C09B45/48 , C09B55/00
CPC分类号： C09B45/01
摘要： A process is described for the manufacture of chromium complexes of metallizable dyes in the form of solid dyestuff powders of low salt to salt-free content, or of concentrated solutions of low salt or salt-free content in which a metallizable dye, or a mixture of metallizable dyes, in an organic solvent which is immiscible or sparingly miscible with water, or reacted with a chromium compound, in the course of which any water which is liberated is removed by azeotropic distillation, and the resulting chromium complex, provided it is a 1:1 complex, is then optionally reacted in the presence of a base with a further mol of a metallizable dye, or of a colorless, complexforming compound, then isolated from undissolved constituents, and the resulting dye solution of low salt or salt-free content is optionally concentrated or evaporated to dryness, whereby it is possible the manufacture of 1:1 or 1:2 chromium complexes without the handicap of effluent pollution, and to isolate the dyes without using salt. The dyes obtained are especially suitable for the manufacture of concentrated solutions without the necessity of having to increase the solubility by means of extenders.
摘要翻译：描述了一种制备以低盐至无盐含量的固体染料粉末形式的可镀金属染料的铬络合物的方法，或其中可镀金属染料或混合物的低浓度或无盐含量的浓缩溶液的可镀金属染料，在与水不混溶或微量混溶的有机溶剂中或与铬化合物反应，在此过程中，通过共沸蒸馏除去任何释放的水，以及所得的铬络合物，只要它是然后任选地在碱的存在下与另外的摩尔的可镀金属染料或无色的复合形成化合物反应，然后从未溶解的组分中分离出所得到的低盐或无盐的染料溶液含量可选地浓缩或蒸发至干，由此可能制造1：1或1：2铬配合物，而不会造成污染物的污染，并将染料与使用盐。所得到的染料特别适用于制备浓缩溶液，而不需要通过增量剂增加溶解度。

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