Method for stabilizing chemical compounds containing at least one ethylenically unsaturated bond in order to prevent undesirable radical polymerization

US6518453B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Heinz Friedrich Sutoris · Bischofswerda, DE
• Gerhard Wagenblast · Wachenheim, DE
• Volker Schliephake · Schifferstadt, DE
• Jürgen Schröder · Ludwigshafen, DE
• Klaus Joachim Müller-Engel · Blankenloch, DE
• Harald Keller · Ludwigshafen, DE
• Thomas Jaworek · Kallstadt, DE

Key dates

• Filing date: Jul 3, 2001
• Grant date: Feb 11, 2003
• Expiry date: Jul 3, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C67/62
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In a process for stabilizing chemical compounds having at least one ethylenically unsaturated bond to undesired free radical polymerization, a nitroxyl radical and a chemical compound containing phosphorus in chemically bonded form are added to the unsaturated compound present as pure substance or as a component of a mixture.