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US5693866A Inhibitors of color formation in alkanolamines 失效
烷醇胺中颜色形成抑制剂

Inhibitors of color formation in alkanolamines
摘要:
In the thermal processing of crude alkanolamines, a method of inhibiting color formation in the alkanolamines comprising adding an amount, effective for the purpose, of an alkali metal hydroxide or sulfite, or mixtures thereof.
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