Patent · US Active

Catalyst having a polysiloxane structural unit for hardenable compositions

US10836868B2 · kind B2 · utility

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0References

7Claims

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Assignee

SIKA TECHNOLOGY AG · CH

Inventors

Rita Cannas · Stintenberger Straße, CH
Urs Burckhardt · Zürich, CH

Key dates

Filing date	Dec 14, 2016
Grant date	Nov 17, 2020
Priority date	—
Expiry date	Mar 23, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2383/08
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A conversion product which has at least one aliphatic amidine or guanidine group and at least one polysiloxane radical, and the use of the conversion product as a catalyst for cross-linking hardenable compositions, in particular based on polymers containing silane groups. The conversion product is largely odor-free, non-volatile, and of low toxicity. The conversion product accelerates the cross-linking of such compositions surprisingly well, does not impair the stability of such compositions in storage, and is very highly compatible, which means that such compositions do not tend toward separation or migration or evaporation of the catalyst.

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