Use of rhamnolipids and/or sophorolipids in coating compositions for obtaining a homogeneous colour appearance of the dry coating film and/or for increasing occupational safety in the production of coating compositions

US12338366B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Ellen Reuter · Essen, DE
• Stefan Silber · Krefeld, DE
• Petra Allef · Essen, DE
• Katrin Roland · Essen, DE
• Pedro Cavaleiro · Viersen, DE
• Jochen Mergenthaler · Essen, DE
• Claudia Jansen · Leverkusen, DE
• Marco Blei · Essen, DE

Key dates

• Filing date: Dec 10, 2021
• Grant date: Jun 24, 2025
• Expiry date: Nov 30, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D17/007
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Rhamnolipids and/or sophorolipids can be used in coating compositions for improvement of the speed of wetting of pulverulent formulation constituents in such compositions, which leads to a reduction in dust nuisance during incorporation thereof and to the increase in occupational safety in the production of coating compositions. Rhamnolipids and/or sophorolipids can also be used in coating compositions for obtaining improved homogeneous colour appearance of the dry paint film with regard to difference in hue, ascertained from the delta E and visual assessment.