Aqueous coating composition comprising an epoxy resin-based paint base component

US12378433B2 · kind B2 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Anna Kondrat · Kohlenbissen, DE
• Beate Rohkamp · Kohlenbissen, DE
• Egbert Nienhaus · Ascheberg, DE
• Karin Wever · Münster, DE
• Joerg Ressel · Münster, DE
• Silke Przybilla · Münster, DE
• Tim Voegeling · Münster, DE
• Sibylle Schoeps · Munster, DE
• Monika Tiggemann · Drensteinfurt, DE
• Sven Gosheger · Drensteinfurt, DE

Key dates

• Filing date: Aug 7, 2020
• Grant date: Aug 5, 2025
• Expiry date: Jul 4, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/08
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Described herein is a specific aqueous two-component coating composition including an epoxy resin-based paint base component (1), and a polyamine-based curing component (2), where the paint base component (1) includes at least one aqueous dispersion of at least one pigment (P) and/or filler (F) in at least one epoxy resin (E), where the at least one epoxy resin (E) has (i) a maximum sedimentation rate of not more than 17,500 micrometers per hour and a glass transition temperature of less than 0° C., or (ii) a maximum sedimentation rate of at least 12,500 micrometers per hour and a glass transition temperature of at least 0° C.