Alkyl carbonate endcapped polyether siloxanes and preparation thereof

US8802744B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Wilfried Knott · Essen, DE
• Horst Dudzik · Essen, DE
• Frauke Henning · Essen, DE
• Frank Schubert · Neukirchen-Vluyn, DE
• Michael Ferenz · Essen, DE
• Roland Hubel · Essen, DE

Key dates

• Filing date: Aug 3, 2012
• Grant date: Aug 12, 2014
• Expiry date: Nov 6, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L83/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention provides polysiloxane-polyether copolymers comprising at least one polyether moiety, characterized in that there is at least one polyether moiety capped with at least one —O—C(O)—O—R″ unit where R″ is identical or different alkyl moieties, a process for preparation thereof and use thereof, especially for polyurethane foam production.