发明授权
US06590120B1 Methods for the preparation of an N-bis-[2-(1,2-dicarboxy-ethoxy)-ethyl]amine derivative and products of the methods and their uses 失效
制备N-双 - [2-(1,2-二羧基 - 乙氧基) - 乙基]胺衍生物的方法及其用途的产物

  • 专利标题: Methods for the preparation of an N-bis-[2-(1,2-dicarboxy-ethoxy)-ethyl]amine derivative and products of the methods and their uses
  • 专利标题(中): 制备N-双 - [2-(1,2-二羧基 - 乙氧基) - 乙基]胺衍生物的方法及其用途的产物
  • 申请号: US09623727
    申请日: 2000-09-08
  • 公开(公告)号: US06590120B1
    公开(公告)日: 2003-07-08
  • 发明人: Reijo AkselaIlkka RenvallAarto Paren
  • 申请人: Reijo AkselaIlkka RenvallAarto Paren
  • 优先权: FI980530 19980309
  • 主分类号: C07C22900
  • IPC分类号: C07C22900
Methods for the preparation of an N-bis-[2-(1,2-dicarboxy-ethoxy)-ethyl]amine derivative and products of the methods and their uses
摘要:
Methods for the preparation of an N-alkyl-N-bis-(2-( 1,2-dicarboxy-ethoxy)-ethyl)-amine derivative are described, products of the methods as well as uses of the products. The derivative is prepared by reacting an alkali or earth alkali metal salt of maleic acid with an N-substituted diethanolamine, the reaction taking place with the two ethanol groups of the diamine while the substituent group bound to the N atom remains unaffected, or alternatively by first reacting diethanolamine with an alkali or earth alkali metal salt of maleic acid to yield N-bis-(2-(1,2-dicarboxy-ethoxy)-ethyl)-amine, which is then reacted with a substitution reagent to obtain the final product. The derivative is useful as chelating agents, e.g., in the bleaching of chemical or mechanical pulp or in textile bleaches containing hydrogen peroxide or a peracid, or as a calcium binder in detergents and cleaning agents.
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