Functional materials with reversible crosslinking

US8916635B2 · kind B2 · utility

Assignee

• Evonik Röhm GmbH · DE

Inventors

• Friedrich Georg Schmidt · Haltern am See, DE
• Simon Krause · Aschaffenburg, DE
• Andre Hennig · Ingelheim am Rhein, DE
• Stefan Hilf · Rodenbach, DE
• Christopher Barner-Kowollik · Blankenloch, DE
• Andrew John Inglis · Sydney, AU
• Leena Nebhani · Copley, US
• Ozcan Altintas · Karlsruhe, DE

Key dates

• Filing date: Jan 4, 2011
• Grant date: Dec 23, 2014
• Expiry date: Jul 26, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J2301/502
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to an innovative method for the reversible crosslinking of, for example, adhesives or coating materials. The reversible crosslinking method allows very rapid crosslinking even at room temperature and undoing of the crosslinks at higher temperatures, thereby regaining the capacity for thermoplastic processing and allowing the originally bonded substrates to be separated from one another again with ease. A particular aspect in this context is that a plurality of cycles of crosslinking and undoing of the crosslinks are possible with the present system.