PROCESS FOR TREATING TERTIARY AMINES

PROCESS FOR TREATING TERTIARY AMINES

A tert-amine which contains an acid-activated color body precursor is treated to prevent it or a derivative thereof, e.g., an amine oxide, betaine, or quaternary ammonium compound, from turning pink when exposed to acidic conditions by contacting it at an effective temperature with a discoloration i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SMITH, KIM RENAE, BORLAND, JAMES ELLWOOD, SAUER, JOE DEAN
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A tert-amine which contains an acid-activated color body precursor is treated to prevent it or a derivative thereof, e.g., an amine oxide, betaine, or quaternary ammonium compound, from turning pink when exposed to acidic conditions by contacting it at an effective temperature with a discoloration inhibitor which is (1) an inorganic sulfite selected from alkali metal sulfites and bisulfites, (2) an alkanal containing at least two carbons, (3) an acetylalkylcarbinol, (4) an amido compound which contains a -CO.NH- group, (5) ammonium carbonate, (6) a dialkylacetal, or (7) ascorbic acid. Ambient temperatures are satisfactory for the treatments with the other discoloration inhibitors, but temperatures above 100 DEG C are required when the discoloration inhibitor is an inorganic sulfite.