Cold vulcanisable silicone rubber compositions, process for preparing these and their use

摘要

The invention relates to a cold-vulcanisable silicone rubber composition comprising two separately stored components A and B. Component A is a product of the reaction of a silicone polymer containing free hydroxyl groups with a crosslinking agent which is present in a stoichiometric excess relative to the silicone polymer, component A optionally containing further customary additives. Component B contains at least one constituent containing hydroxyl groups, of which at least one is a silicone polymer containing free hydroxyl groups. The hydroxyl-containing constituent in component B comprises, in particular, a silicone polymer containing free hydroxyl groups and water. The invention furthermore relates to a process for the preparation of a cold-vulcanisable silicone rubber composition in which components A and B are premixed separately and subsequently stored separately. The silicone rubber compositions according to the invention can be used as sealants, coating materials and jointing materials.