Cationically curable composition and method for the joining, casting and coating of substrates using the composition

US12384873B2 · kind B2 · utility

Assignee

• DELO Industrie Klebstoffe GmbH & Co. KGaA · DE

Inventors

• Gerald L. Uhl · Windom, US
• Timo Anselment · Windach, DE
• Michael Scholz · Thannhausen, DE
• Sebastian Zink · Windach, DE
• Kilian Kreul · Windach, DE

Key dates

• Filing date: Nov 28, 2019
• Grant date: Aug 12, 2025
• Expiry date: Jun 14, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2200/0647
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a cationically curable composition with at least one cationically polymerizable component, a first photoinitiator releasing an acid when irradiated with actinic radiation of a first wavelength λ1, and a second photoinitiator releasing an acid when irradiated with actinic radiation of a second wavelength λ2, wherein the second wavelength λ2 is shorter than the first wavelength λ1, and wherein the second photoinitiator, after irradiation of the composition with actinic radiation of the first wavelength λ1, shows an absorption of actinic radiation of the second wavelength λ2 in the composition that is sufficient to activate the second photoinitiator and fix the composition. Furthermore, a method is described for the joining, casting, molding, sealing and/or coating of substrates using the cationically curable composition.