A Colouring of Polyoxyethylene Alkylamine During a Production Process

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  • ポリオキシエチレンアルキルアミン合成中の着色について
  • ポリオキシエチレンアルキルアミン ゴウセイ チュウ ノ チャクショク ニ ツイテ

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Colouring of polyoxyethylene alkylamine during the production process was studied with RNH2, RN (CH3) 2, RN (C2H4OH) 2 and ROH each of which was reacted with ethylene oxide containing various amount of acetaldehyde.<BR>In the case using RNH2, the colouring of the adduct was depressed till 2 mol addition.<BR>Tert-amino group accelerated colouring of the adduct.<BR>It seems that the colouring of polyoxyethylene alkylamine is not due to formation of azomethine group and main cause of the colouring is another reaction of acetaldehyde such as polymerization and it's decomposition etc.

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