| abstract |
The present invention provides moisture curable compositions comprising urethane catalysts as an alternative to organotin catalysts. In particular, the present invention provides condensation compounds comprising secondary amines, tertiary amines, substituted amines (such as amino ester compounds) or combinations of two or more thereof and optionally one or more aminosilanes or siloxanes. catalyst. Furthermore, compositions employing amino esters allow the curing characteristics of the composition to be adjusted or tuned by adding other components, such as adhesion promoters or acidic compounds, and provide good adhesion and storage stability. |