Use of long-chain citric acid esters in aqueous polyurethane dispersions

US11932747B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Michael Klostermann · Essen, DE
• Kai-Oliver Feldmann · Essen, DE
• Jan Marian von Hof · Bochum, DE
• Marvin Jansen · Essen, DE
• Sina Arnold · Bottrop, DE

Key dates

• Filing date: May 26, 2021
• Grant date: Mar 19, 2024
• Expiry date: Dec 30, 2041

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06N3/0043
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The use of long-chain citric acid esters as additives in aqueous polymer dispersions for production of porous polymer coatings, preferably for production of porous polyurethane coatings, is described.