Stabilizing agent for hydroxylamine solutions

US6758990B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Markus Weber · Langenfeld, DE
• Hans-Josef Sterzel · Schifferstadt, DE
• Eckhard Ströfer · Mannheim, DE
• Otto Watzenberger · Ludwigshafen, DE

Key dates

• Filing date: Aug 20, 2002
• Grant date: Jul 6, 2004
• Expiry date: Aug 20, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C235/60
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Hydroxylamine solutions stabilized using tri(4-(2,3-dihydroxyphenyl)-4-oxabutyl)amine, tri(4-(2,3-dihydroxyphenyl)-4-keto-3-azabutyl)amine or salts thereof, and methods of stabilizing hydroxylamine solutions using these compounds.