Aqueous polyorganosiloxane hybrid resin dispersion

US12404407B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Mona Seyfried · Coburg, DE
• Stefan Silber · Krefeld, DE
• Berend-Jan de Gans · Mülheim an der Ruhr, DE
• Michael Fiedel · Essen, DE
• Markus Hallack · Schermbeck, DE

Key dates

• Filing date: Feb 26, 2024
• Grant date: Sep 2, 2025
• Expiry date: Feb 26, 2044

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/035
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for producing an aqueous polyorganosiloxane hybrid resin dispersion includes emulsifying a polyorganosiloxane hybrid resin solution of a polyorganosiloxane hybrid resin and an organic or semi-organic solvent with an emulsifier solution that includes at least one emulsifier based on a partly hydrolysed polyvinylacetate and removing the organic or semi-organic solvent.