Process for the preparation of metallisable azo dyes
    1.
    发明授权
    Process for the preparation of metallisable azo dyes 失效
    制备可镀银偶氮染料的方法

    公开(公告)号:US5126435A

    公开(公告)日:1992-06-30

    申请号:US596611

    申请日:1990-10-11

    IPC分类号: C09B29/01 C09B41/00

    摘要: A process for the preparation of azo dyes of formula ##STR1## wherein K is the radical of a coupling component of the benzene or naphthalene series or of the heterocyclic series, and the hydroxy group is attached to K adjacent to the azo group, X is hydrogen or nitro and M is an alkali metal ion or an ammonium ion, which process comprises coupling a diazo component of formula ##STR2## in the presence of a zinc salt and in an inert gas atmosphere, to a coupling component of formula ##STR3## in which formula (2) and (3) above K and X are as defined for formula (1). The process makes it possible to obtain the azo dyes in high yield.

    摘要翻译: 制备式(1)的偶氮染料的方法,其中K是苯或萘系或杂环系的偶联组分的基团,羟基连接到与偶氮基相邻的K ,X是氢或硝基,M是碱金属离子或铵离子,该方法包括将式(2)的重氮组分在锌盐的存在下和惰性气体气氛中偶合到偶联剂 式(3)的组分,其中K和X上的式(2)和(3)如式(1)所定义。 该方法可以以高产率获得偶氮染料。

    Process for the preparation of metallizable azo dyes carrying out
coupling in an inert gas atmosphere in the presence of an ammonium salt
    2.
    发明授权
    Process for the preparation of metallizable azo dyes carrying out coupling in an inert gas atmosphere in the presence of an ammonium salt 失效
    制备在惰性气体气氛中在铵盐存在下进行偶联的可镀金属偶氮染料的方法

    公开(公告)号:US4994561A

    公开(公告)日:1991-02-19

    申请号:US536054

    申请日:1990-06-08

    IPC分类号: C09B29/01 C09B29/15 C09B41/00

    摘要: A process for the preparation of an azo dye of formula ##STR1## wherein K is the .beta.-naphthol radical, X is hydrogen or nitro and M is an alkali metal ion or an ammonium ion, which process comprises coupling an aqueous solution containing 15 to 30 percent by weight of a diazo component of formula ##STR2## and 6 to 20 mol % of an ammonium salt, based on the molar amount of the diazo component, at a pH in the range from 10.5 to 11.5 and in an inert gas atmosphere, to a coupling component of formula ##STR3## in which formulae (2) and (3) above K and X are as defined for formula (1).The present invention makes it possible to obtain the claimed azo dyes in high yield.

    摘要翻译: 一种制备式(1)的偶氮染料的方法,其中K是β-萘酚基,X是氢或硝基,M是碱金属离子或铵离子,该方法包括将水溶液 含有15至30重量%的式(2)的重氮组分和6至20mol%的铵盐,基于重氮组分的摩尔量,在10.5至11.5的pH范围内 在惰性气体气氛中,与式(3)的偶合组分相同,其中K和X上的式(2)和(3)如式(1)所定义。 本发明使得可以高产率地获得所要求的偶氮染料。