Silicone stabilizers for rigid polyurethane or polyisocyanurate foams

US8957121B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Carsten Schiller · Mülheim an der Ruhr, DE
• Martin Glos · Borken, DE
• Christian Eilbracht · Herne, DE

Key dates

• Filing date: Dec 16, 2011
• Grant date: Feb 17, 2015
• Expiry date: May 2, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2115/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A polyether siloxane of formula (I)R1—Si(CH3)2—O—[-Si(CH3)2—O—]n—[-Si(CH3)R—O—]m—Si(CH3)2—R2  (I)where