Moisture-curing compositions

US11667746B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Christoph Thiebes · Cologne, DE
• Florian Stempele · Cologne, DE
• Ute Nattke · Leverkusen, DE

Key dates

• Filing date: Dec 12, 2018
• Grant date: Jun 6, 2023
• Expiry date: Dec 29, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2190/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a method for preparing polyurethanes containing alkoxysilane groups, said method comprising the step of reacting a compound containing at least one NCO group with a compound containing at least one Zerewitinoff-active H atom in the presence of a catalyst component, the at least one compound containing an NCO group and/or the compound containing at least one Zerewitinoff-active H atom containing at least one alkoxysilane group, so as to obtain a polyurethane containing alkoxysilane groups. The invention also relates to a polymer containing alkoxysilane groups, a method for preparing a curable polymer, a curable polymer, a cured polymer, and use thereof. The polyurethanes are prepared with use of a thermally labile tin catalyst.