Moisture-curing compositions

US11834545B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Christoph Thiebes · Cologne, DE
• Florian Stempfle · Cologne, DE
• Hans-Josef Laas · Odenthal, DE
• Beate Baumbach · Burscheid, DE
• Ute Nattke · Leverkusen, DE

Key dates

• Filing date: Dec 14, 2018
• Grant date: Dec 5, 2023
• Expiry date: Mar 26, 2040

Classification

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

Abstract

A method for producing polyurethanes containing alkoxysilane groups comprises 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, wherein the compound containing at least one NCO group and/or the compound containing at least one Zerewitinoff-active H atom contain at least one alkoxysilane group, to obtain a polyurethane containing alkoxysilane groups. The invention also relates to a polymer containing alkoxysilane groups, a method for producing a curable polymer, a curable polymer, a cured polymer, and the use thereof. The polymers contain a complex of a lanthanide with at least one beta-diketonate ligand, preferably Yb(acac)3, and are free from organic tin compounds.