Process for the preparation of highly concentrated solutions of cationic
azo dyes
    3.
    发明授权
    Process for the preparation of highly concentrated solutions of cationic azo dyes 失效
    制备高浓度阳离子偶氮染料溶液的方法

    公开(公告)号:US5284939A

    公开(公告)日:1994-02-08

    申请号:US882981

    申请日:1992-05-14

    IPC分类号: C09B67/34 C09B69/06 C09B41/00

    CPC分类号: C09B69/065 C09B67/0076

    摘要: There is described a process for the preparation of highly concentrated aqueous solutions of specific cationic azo dyes. The solutions are prepared by diazotising a diazo component in a solution which contains sulfuric acid, coupling the diazotised component to a coupling component, treating the resultant azo dye with a bicarbonate, and converting the dye bicarbonate with an organic acid into the dye salt of said acid.

    摘要翻译: 描述了制备高浓度特定阳离子偶氮染料水溶液的方法。 溶液是通过将重氮组分在包含硫酸的溶液中重氮化,将重氮化的组分偶合到偶联组分上,用碳酸氢盐处理所得的偶氮染料,并将有机酸的染料碳酸氢盐转化成所述的 酸。

    Preparation of stable solutions of azo dyes of m-phenylenediamine by
reaction with formic acid
    4.
    发明授权
    Preparation of stable solutions of azo dyes of m-phenylenediamine by reaction with formic acid 失效
    通过与甲酸反应制备间苯二胺偶氮染料的稳定溶液

    公开(公告)号:US4952680A

    公开(公告)日:1990-08-28

    申请号:US181577

    申请日:1988-04-14

    申请人: Karl Schmeidl

    发明人: Karl Schmeidl

    摘要: Stable solutions of azo dyes obtained by diazotizing and coupling m-phenylenediamine or derivatives thereof are prepared after the reaction has ended by treating the resulting reaction mixture with from 0.1 to 1.2 moles of formic acid, based on 1 mole of m-phenylenediamine, at from 60.degree. C. to the boiling point of the reaction mixture.

    摘要翻译: 通过重氮化和偶联间苯二胺或其衍生物得到的偶氮染料的稳定溶液在反应结束后通过用0.1至1.2摩尔甲酸(基于1摩尔间苯二胺)处理得到的反应混合物来制备, 60℃至反应混合物的沸点。

    Coloring composition
    5.
    发明授权
    Coloring composition 失效
    着色成分

    公开(公告)号:US4649174A

    公开(公告)日:1987-03-10

    申请号:US670870

    申请日:1984-11-13

    摘要: There is provided hereby a coloring composition having an excellent water resistance and solution stability, which comprises a reaction mixture of(a) a vinyl compound soluble in water or in a water soluble organic solvent, with(b) a compound which contains more than two groups having a active hydrogen, at least one group of which is an amino group or imino group,in the presence of a water soluble dye and optionally a solvent.

    摘要翻译: 因此,提供了具有优异的耐水性和溶液稳定性的着色组合物,其包含(a)可溶于水或在水溶性有机溶剂中的乙烯基化合物与(b)含有两个以上的化合物的反应混合物 具有活性氢的基团,其中至少一个基团是氨基或亚氨基,在水溶性染料和任选的溶剂的存在下。

    Concentrated aqueous solutions of cationic colorant and procedure for
their preparation
    7.
    发明授权
    Concentrated aqueous solutions of cationic colorant and procedure for their preparation 失效
    浓缩的阳离子着色剂水溶液及其制备方法

    公开(公告)号:US4264496A

    公开(公告)日:1981-04-28

    申请号:US094615

    申请日:1979-11-15

    申请人: Marcel Durant

    发明人: Marcel Durant

    IPC分类号: C09B44/18 C09B67/34 C09B29/22

    CPC分类号: C09B67/0076 C09B44/18

    摘要: The present invention provides concentrated aqueous acid solutions of the colorant having the formula: ##STR1## in which A.sup..crclbar. represents the formate, acetate or propionate anion. The solutions are prepared starting with the corresponding chloride or sulfomethylate by forming the m- or p-nitrobenzoate, dissolving said salt in formic, acetic or propionic acid and eliminating the nitrobenzoic acid which is precipitated. The solutions of the invention can be used for coloring and printing fibers containing acid groups, and particularly acrylic fibers.

    摘要翻译: 本发明提供了具有下式的着色剂的浓缩酸水溶液:其中A( - )代表甲酸盐,乙酸盐或丙酸根阴离子。 通过形成对甲苯磺酸或对硝基苯甲酸酯,将所述盐溶解在甲酸,乙酸或丙酸中并除去沉淀的硝基苯甲酸,从相应的氯化物或磺甲基化物开始制备溶液。 本发明的溶液可用于着色和印刷含有酸基团的纤维,特别是丙烯酸纤维。