Abstract: The invention relates to polyurethane and/or polyorganosiloxane copolymer compounds and salts thereof that contain carbodiimide moieties of formula [I]. Further, the invention relates to a process for the preparation thereof, to precursors for the preparation thereof, and to reactive compositions which contain such precursors and to their use for treating or finishing fibers, including hair and wool, and for permanently finishing, treating, impregnating textiles and leather or synthetic leather and other fibrous materials, and sheet materials and paper.