Examination of the reaction products by the chlorination of epoxy resin hardener using the aromatic amine system

DOI

Bibliographic Information

Other Title
  • 芳香族アミン系エポキシ樹脂硬化剤の塩素処理による反応生成物の検討

Description

Epoxy resin is used to repair old water distribution pipes. To cure the resin, 4,4’-methylendianiline (MDA), an aromatic amine, is used as a hardener. When the drying time during repairs is too short, MDA and the reaction products of MDA and chlorine may dissolve into tap water. Therefore, we investigated chemicals that were produced by the reaction of MDA or 4,4’-ethylendianiline (EDA), a hardener similar to MDA, and residual chlorine, and we also tried to establish a method for the examination of those chemicals in tap water.<BR>We found that both MDA and EDA could produce various chemicals by reaction with residual chlorine at various concentrations. The chemicals identified with a molar ratio of 3 to 1,000 to residual chlorine and either MDA or EDA were p-benzoquinone, 2,4-dichloroaniline, 2,4,6-trichloroaniline. P-aminobenzyl chloride was also identified as a possible reaction chemical produced maximally at the molar ratio of 5. We conclude that detection of these chemicals in tap water is an effective method of confirming the dissolution of MDA and EDA.

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Details 詳細情報について

  • CRID
    1390282680230876800
  • NII Article ID
    130004943411
  • DOI
    10.11171/chemobio.6.66
  • ISSN
    13499041
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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