Basic deactivators for POM production

US7645822B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Jens Assmann · Haan, DE
• Knut Zollner · Mannheim, DE

Key dates

• Filing date: Nov 5, 2005
• Grant date: Jan 12, 2010
• Expiry date: May 31, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/3435
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Process for preparation of polyoxymethylenes via polymerization of the monomers a) in the presence of cationic initiators b) and also, if appropriate, in the presence of regulators c), followed by deactivation and discharge from the reactor, which comprises using, as deactivator (d) at least one basic compound having at least 2 amino functions of different reactivity in one molecule.