| abstract |
A moisture curable composition used e.g. as a sealant, comprises a polymer (A) containing reactive hydroxyl or hydrolysable groups bonded to silicon, which groups are reactive in the presence of moisture with each other or with groups in a crosslinking agent (B) present in the composition, characterized in that the composition contains a monoalkyltin compound as catalyst for the reaction of the reactive groups of polymer (A). Any suitable monoalkyltin compound may be used these include, for example, any one or more of alkylstannoic acid, alkyltinchlorodihydroxide, alkyltin tricarboxylate and/or alkyltin tri(2-ethylhexanoate). |