Mixture of substances containing compounds with vinyl groups and stabilizers

US6475348B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Heinz Friedrich Sutoris · Bischofswerda, DE
• Konrad Mitulla · Ludwigshafen, DE
• Jacques Dupuis · Ludwigshafen, DE
• Claus Kaliba · Schifferstadt, DE

Key dates

• Filing date: Dec 17, 1999
• Grant date: Nov 5, 2002
• Expiry date: Dec 17, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K15/32
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A mixture contains one or more vinyl-containing compounds as component (A) and, as a further component, a stabilizer (B) which contains one or more readily volatile nitroxyl compounds as component (b1), one or more sparingly volatile nitroxyl compounds as component (b2), if required one or more aromatic nitro compounds as component (b3) and, if required, one or more iron compounds as component (b4).Stabilizers (B) contain the components (b1) and (b2), (b1) and (b2) and (b3), (b1) and (b2) and (b4), and (b1), (b2), (b3) and (b4), and the premature polymerization of vinyl-containing compounds during their purification or distillation is inhibited by a process in which a stabilizer (B) is added or the components of stabilizer (B) are added as individual substances or in at least two groups of the components.