Organosilicon compounds comprising ammonium groups

The invention relates to novel organosilicon compounds comprising ammonium groups, said compounds being soluble in isopropanol or diethylene glycol monobutyl ether, and containing: a) at least one structural unit of general formula (I) wherein R2 represents a bivalent organic radical containing a hydroxyl group which is conditioned by a ring opening of an epoxy group; R3 represents a hydrogen atom or a monovalent hydrocarbon radical comprising 1 to 60 carbon atoms per radical, and can be split or substituted by at least one separate heteroatom chosen from the group consisting of nitrogen, oxygen, sulphur or halogen atoms; R4 represents a bivalent hydrocarbon radical comprising 1 to 10 carbon atoms per radical; n represents 0 or a whole number from 1 to 10; m represents a whole number from 1 to the total number of nitrogen atoms in (I); x represents 0 or 1; and X-represents an anion, b) at least one siloxane unit of general formula (II), and c) at least two siloxane units of general formula (III) wherein R, R1, a and b have the designation cited in patent claim (1), provided that the siloxane units of formula (III) are connected to the structural unit of formula (I) via the Si atoms via the R2 radicals.