Patent · US Active

Method for preparing a mixed silane-terminated polymer

US11795266B2 · kind B2 · utility

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13References

13Claims

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Assignee

Covestro Intellectual Property GmbH & Co. KG · DE

Inventors

Florian Stempfle · Cologne, DE
Hans-Josef Laas · Odenthal, DE
Christoph Thiebes · Cologne, DE

Key dates

Filing date	May 25, 2020
Grant date	Oct 24, 2023
Priority date	—
Expiry date	May 25, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/755
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing a mixed silane-terminated polymer by reacting a polyol component A) with a diisocyanate component B) comprising 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane (isophorone diisocyanate), at least one isocyanatosilane C) and an aminosilane E), in which the urethanization reaction is carried out in the presence of at least one catalyst D) which is free of organically bonded tin. The invention further relates to the use of the polymers thus obtained.

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