| abstract |
The present invention relates to a catalyst containing at least one amidine or guanidine group of the formula (Ia) or (Ib) bonded to the silicon atom of the siloxane residue. This catalyst is liquid and odorless at room temperature. This is particularly suitable as a crosslinking catalyst for curable compositions, particularly silane group-containing compositions. This is particularly good at accelerating the cure of such compositions that do not impair storage stability, and also exhibits good affinity with low volatility. As a result, such compositions are less susceptible to catalyst separation or transfer or evaporation. |