Aqueous binders for heat-sealing applications

US10961409B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Florian Hermes · Haltern am See, DE
• Dominik Sturm · Riedstadt, DE
• Christian Golditz · Salmünster, DE
• Michael Wicke · Seeheim-Jugenheim, DE
• Herbert Jung · Karlstein, DE
• Juergen Hartmann · Ludwigshafen, DE
• Bruno Keller · Zürich, CH

Key dates

• Filing date: Aug 29, 2018
• Grant date: Mar 30, 2021
• Expiry date: Nov 17, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C26/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to aqueous binders and to heat-sealing lacquers produced therefrom for heat-sealable coatings which adhere on aluminium without use of any primer, permit good sealability of the coated aluminium foil with respect to PS and/or PVC, and moreover feature good blocking resistance even at temperatures above 40° C.