The invention relates to polyorganosiloxanes with special silicon-containing groups of the general formula (1) as defined herein, a method for preparing said polyorganosiloxanes, and curable compositions comprising at least one said polyorganosiloxane, at least one adhesion promoter, and at least one curing catalyst. The invention also relates to adhesive, sealant, or coating materials comprising the curable composition and the use of the curable composition.