发明公开
EP0005251A3 Process for the preparation of sulfinates of 4,4'-diaminobenzhydrol and of its substituted products, and copying paper containing these compounds 失效
制备4,4'-二氨基苯甲酸及其取代产物的硫酸盐的方法以及含有这些化合物的复印纸

  • 专利标题: Process for the preparation of sulfinates of 4,4'-diaminobenzhydrol and of its substituted products, and copying paper containing these compounds
  • 专利标题(中): 制备4,4'-二氨基苯甲酸及其取代产物的硫酸盐的方法以及含有这些化合物的复印纸
  • 申请号: EP79101293
    申请日: 1979-04-30
  • 公开(公告)号: EP0005251A3
    公开(公告)日: 1979-12-12
  • 发明人: Raue, Roderich, Dr.
  • 申请人: BAYER AG
  • 专利权人: BAYER AG
  • 当前专利权人: BAYER AG
  • 优先权: DE2820486 19780510
  • 主分类号: C07C145/00
  • IPC分类号: C07C145/00 B41M05/12
Process for the preparation of sulfinates of 4,4'-diaminobenzhydrol and of its substituted products, and copying paper containing these compounds
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