Defoamer compositions for detergents

US10870732B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Holger Rautschek · Großenhain, DE
• Richard Becker · Burghausen, DE
• Christof Brehm · Konstanz, DE

Key dates

• Filing date: Feb 21, 2017
• Grant date: Dec 22, 2020
• Expiry date: Aug 3, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/378
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Defoamer preparations contain a polyorganosiloxane having aryl groups bonded to silicon at a ring carbon, filler particles and/or silicone resin particles, and a polyoxyalkylene polyether containing oxypropylene moieties. In addition to being efficient and compatible, the defoamer compositions retain their efficiency, especially in liquid detergents, after storage.