One-package RTV compositions which are storage-stable under anhydrous conditions and form paintable elastomers

摘要

The present invention relates to polydiorganosiloxane compositions which can be stored under anhydrous conditions, can be cured at ambient temperature in the presence of water or atmospheric air to give low-modulus elastomers of high extensibility and tear strength and are obtainable by mixing alpha , omega -dihydroxypolydiorganosiloxanes, if desired plasticising polysiloxanes, such as alpha , omega -bis(triorganylsiloxy)polyorganosiloxanes with carboxamidoalkylalkoxysilicon compounds as crosslinking agents and complex titanic acid esters, and fillers and, if desired, pigments and heavy-metal salts which accelerate the crosslinking, the fillers used being precipitated, hydrophobicised chalk whose residual moisture has been removed before the addition of titanic acid esters and crosslinking agents.