发明授权
US4141889A Symmetrical hexakisazo compounds having a 2,2'-disulfostilbenyl central radical 失效
具有2,2(40-二磺基二苯基中心基团)的对称六氮杂偶合物

  • 专利标题: Symmetrical hexakisazo compounds having a 2,2'-disulfostilbenyl central radical
  • 专利标题(中): 具有2,2(40-二磺基二苯基中心基团)的对称六氮杂偶合物
  • 申请号: US819241
    申请日: 1977-07-27
  • 公开(公告)号: US4141889A
    公开(公告)日: 1979-02-27
  • 发明人: Zdenek Allan
  • 申请人: Zdenek Allan
  • 申请人地址: CHX Basel
  • 专利权人: Sandoz Ltd.
  • 当前专利权人: Sandoz Ltd.
  • 当前专利权人地址: CHX Basel
  • 优先权: CHX9832/76 19760802
  • 主分类号: C09B35/52
  • IPC分类号: C09B35/52 C09B35/64 C09B43/08 C09B35/36
Symmetrical hexakisazo compounds having a 2,2'-disulfostilbenyl central
radical
摘要:
Symmetrical hexakisazo compounds of the formula ##STR1## and mixtures of such compounds, WHEREINEach X is hydrogen or --SO.sub.3 M,each R.sub.1 is --OH or --NH.sub.2,each R.sub.2 is --OH or --NH.sub.2,each Y is hydrogen, methyl, or --SO.sub.3 M, andEach M, independently, is hydrogen or a non-chromophoric cation,Their production, dye compositions containing them, and their use in the dyeing of cellulosic substrates such as cotton and paper.
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