Process for the preparation of highly concentrated solutions of cationic
azo dyes
    1.
    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。

    Oxazine dyes, their preparation and the use thereof
    2.
    发明授权
    Oxazine dyes, their preparation and the use thereof 失效
    恶嗪染料及其制备及其用途

    公开(公告)号:US5917035A

    公开(公告)日:1999-06-29

    申请号:US39733

    申请日:1998-03-16

    IPC分类号: C07D265/38 C09B19/00

    CPC分类号: C09B19/00

    摘要: The compounds of formula ##STR1## wherein the substituents are as defined in the claims, are suitable for dyeing or printing, inter alia, polyacrylonitrile and acid-modified polyester fibers, and can furthermore be converted by anion exchange into a physical form suitable for liquid formulations.

    摘要翻译: 下式的化合物其中取代基如权利要求中所定义,适用于特别是聚丙烯腈和酸改性聚酯纤维的染色或印花,并且还可以通过阴离子交换转化为适合于液体制剂的物理形式。