Patent · US Active

Drying agent for moisture-curing compositions

US11965056B2 · kind B2 · utility

0Cited by

7References

17Claims

0Family size

Assignee

Covestro Intellectual Property GmbH & Co. KG · DE

Inventors

Christoph Thiebes · Cologne, DE
Florian Stempfle · Cologne, DE
Klaus Lorenz · Worms, DE
Ute Nattke · Leverkusen, DE

Key dates

Filing date	Aug 14, 2019
Grant date	Apr 23, 2024
Priority date	—
Expiry date	Feb 3, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K2200/065
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a polymer composition that can be produced by (a) reacting an NCO-reactive polymer having exactly one NCO-reactive group per molecule, with a diisocyanate, the molar ratio of the diisocyanate molecule to the NCO-reactive groups of the NCO-reactive polymer being at least 2:1; and (b) reacting the residual NCO groups in the reaction product from step a) with an NCO-reactive silane. The invention also relates to a moisture-reactive composition containing said polymer composition, to methods for producing the polymer composition, and to moisture-reactive compositions containing said polymer composition. Finally, the invention relates to the use of the polymer composition as a drying agent for moisture-curing adhesives, sealants and coating agents.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.