Patent · US Active

Silane-terminated polyurethane crosslinking polymer for high tensile strength adhesive

US11434323B2 · kind B2 · utility

0Cited by

11References

19Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

Yufang Li · Shanghai, CN
Henry C. Ashton · Aurora, US
Raul Benitez Martinez · Solon, US

Key dates

Filing date	Jun 19, 2020
Grant date	Sep 6, 2022
Priority date	—
Expiry date	Jul 23, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2170/90
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

This disclosure relates generally to a moisture curable composition. The composition includes a first, crosslinkable copolymer having a plurality of silyl alkoxy terminal groups and a backbone that is the reaction product of a diisocyanate and a mixture of a low molecular weight polyether polyol and a high molecular weight polyether polyol; a second crosslinkable oligomer having a plurality of silyl alkoxy terminal groups and a backbone that is the reaction product of a diisocyanate and a low molecular weight polyether polyol; and a third crosslinkable oligomer having a plurality of silyl alkoxy terminal groups and a backbone that is the reaction product of a diisocyanate and a high molecular weight polyether polyol.

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