Integrated process for producing cyclic acetals and oxymethylene polymers

US9469624B2 · kind B2 · utility

Assignee

• Ticona LLC · US

Inventors

• Michael Haubs · Bad Kreuznach, DE
• Michael Hoffmockel · Niedernhausen, DE
• Klaus Kurz · Kelsterbach, DE
• Jurgen Lingnau · Mainz, DE
• Damian Feord · Florence, US

Key dates

• Filing date: Nov 23, 2012
• Grant date: Oct 18, 2016
• Expiry date: Mar 7, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/62
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for producing cyclic acetals is described. A formaldehyde source is contacted with an aprotic compound in the presence of a catalyst to produce the cyclic acetals. The aprotic compound can increase conversion rates and/or efficiency. In one embodiment, the formaldehyde source is obtained from methanol. In particular, methanol can be converted into formaldehyde which is then converted into a cyclic acetal. In one embodiment, the cyclic acetal can then be used to produce oxymethylene polymers.