Reducing the coloration of aromatic diamines

Details Reducing the coloration of aromatic diamines Reducing the coloration of aromatic diamines

C - Chemistry, Metallurgy

07

C

C07C 209/90 (2006.01) C07C 209/68 (2006.01)

Patent

CA 2327358

Existing coloration of a liquid ring-polyalkyl-substituted aromatic primary diamine is reduced by blending into such diamine a color-reducing amount of at least one dihydrocarbylhydroxylamine. Preferably, the resultant product is stored in a closed container under an inert atmosphere.

Il est possible de réduire la coloration d'une diamine primaire aromatique liquide à cycles à substitution polyalkyle en lui mélangeant une quantité réductrice de coloration d'au moins une dihydrocarbylhydroxylamine, le produit résultant devant de préférence être stocké dans un récipient fermé et sous atmosphère inerte.

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