Coated polyoxymethylenes

US8029912B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Karthikeyan Sharavanan · Mannheim, DE
• Jens Assmann · Haan, DE
• Lidcay Herrera Taboada · Barcelona, ES
• Rainer Anderlik · Heidelberg, DE
• Lothar Weller · Lichtenfels, DE
• Michael Prinz · Hamm (Sieg), DE
• Jürgen Demeter · Bischofswerda, DE

Key dates

• Filing date: Feb 5, 2009
• Grant date: Oct 4, 2011
• Expiry date: Feb 5, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31942
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The present invention relates to coated polyoxymethylene moldings comprising at least one polyoxymethylene homo- or copolymer A), and also, if appropriate, further additives B), which has been coated on the surface with at least one binder C) and one formaldehyde scavenger D), wherein the binder C) used comprises a polyalkylene oxide C1 or a polyvinyl ester C2 or a graft polymer C3 composed of C1 and C2 or a mixture of these, and the formaldehyde scavenger D) used comprises at least one imidazolidin-2-one compound.