Polysiloxane compounds of the formula: [M a D b T c Q d]e wherein M = R 3 SiO 1/2, D = R 2 SiO 2/2, T = RSiO 3/2, Q = SiO 4/2, with a = 1-10 b = 0-1000 c = 0-1 d = 0-1 e = 1-10 wherein R = is an organic group, with the requirement that R comprises at least one group R 9, which is selected from: R 1 = -Z-(A-E) y, wherein Z = a bivalent or trivalent straight-chained, cyclic or branched, saturated or unsaturated C 2 to C 20 -hydrocarbon residue, which can comprise one or more groups selected from -O-, -NH-, and can be substituted by one or more OH groups, A is a bivalent residue which is selected from the group which comprises: and y = 1 or 2 E is selected from the group which comprises: E 2 = -O-C -R 2, wherein R 2 = is a straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 50 carbon atoms, which can comprise one or more groups selected from -O-, -NH-, -NR 3 -, -C - and is substituted by one or more OH groups, wherein R 3 = a straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 6 carbon atoms, and E 3 = wherein E 2 is as defined above, and x = 1 - 4, E 5 = -NR 4 R 5, wherein R 4 and R 5 are the same or different and are selected from the group which comprises: hydrogen and straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 30 carbon atoms, which can comprise one or more groups selected from -O-, -NH-, -NR 3 -, wherein R 3 is as defined above, -C -, and can be substituted by one or more OH- and/or H 2 N- groups, R 6 = -Z-E 2 wherein E 2 is as defined above, and R 7 = -Z-E 6, wherein E 6 = -NH-C -R 4, wherein R 4 is a defined above, and R 9 in addition to at least one of R 1, R 6 and R 7 is R 61 = -Z-E 1, wherein E 1 is -O-C -R 21, wherein R 21 = a straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 50 carbon atoms, which can comprise one or more groups selected from -O-, -NH-, -NR 3 -, -C -, wherein R 3 is as defined above, but has no hydroxy substituent. M = R 3 SiO 1/2, D = R 2 SiO 2/2, T = RSiO 3/2, Q = SiO 4/2, with a = 1-10 b = 0-1000 c = 0-1 d = 0-1 e = 1-10 wherein R = is an organic group, with the requirement that R comprises at least one group R 9, which is selected from: R 1 = -Z-(A-E) y, wherein Z = a bivalent or trivalent straight-chained, cyclic or branched, saturated or unsaturated C 2 to C 20 -hydrocarbon residue, which can comprise one or more groups selected from -O-, -NH-, and can be substituted by one or more OH groups, A is a bivalent residue which is selected from the group which comprises: and y = 1 or 2 E is selected from the group which comprises: E 2 = -O-C -R 2, wherein R 2 = is a straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 50 carbon atoms, which can comprise one or more groups selected from -O-, -NH-, -NR 3 -, -C - and is substituted by one or more OH groups, wherein R 3 = a straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 6 carbon atoms, and E 3 = wherein E 2 is as defined above, and x = 1 - 4, E 5 = -NR 4 R 5, wherein R 4 and R 5 are the same or different and are selected from the group which comprises: hydrogen and straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 30 carbon atoms, which can comprise one or more groups selected from -O-, -NH-, -NR 3 -, wherein R 3 is as defined above, -C -, and can be substituted by one or more OH- and/or H 2 N- groups, Z = a bivalent or trivalent straight-chained, cyclic or branched, saturated or unsaturated C 2 to C 20 -hydrocarbon residue, which can comprise one or more groups selected from -O-, -NH-, and can be substituted by one or more OH groups, A is a bivalent residue which is selected from the group which comprises: and y = 1 or 2 E is selected from the group which comprises: E 2 = -O-C -R 2, wherein R 2 = is a straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 50 carbon atoms, which can comprise one or more groups selected from -O-, -NH-, -NR 3 -, -C - and is substituted by one or more OH groups, wherein R 3 = a straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 6 carbon atoms, and E 3 = wherein E 2 is as defined above, and x = 1 - 4, E 5 = -NR 4 R 5, wherein R 4 and R 5 are the same or different and are selected from the group which comprises: hydrogen and straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 30 carbon atoms, which can comprise one or more groups selected from -O-, -NH-, -NR 3 -, wherein R 3 is as defined above, -C -, and can be substituted by one or more OH- and/or H 2 N- groups, wherein R 2 = is a straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 50 carbon atoms, which can comprise one or more groups selected from -O-, -NH-, -NR 3 -, -C - and is substituted by one or more OH groups, wherein R 3 = a straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 6 carbon atoms, and E 3 = wherein E 2 is as defined above, and x = 1 - 4, R 6 = -Z-E 2 wherein E 2 is as defined above, and R 7 = -Z-E 6, wherein E 6 = -NH-C -R 4, wherein R 4 is a defined above, and R 9 in addition to at least one of R 1, R 6 and R 7 is R 61 = -Z-E 1, wherein E 1 is -O-C -R 21, wherein R 21 = a straight-chained, cyclic or branched, saturated or unsaturated hydrocarbon residue with up to 50 carbon atoms, which can comprise one or more groups selected from -O-, -NH-, -NR 3 -, -C -, wherein R 3 is as defined above, but has no hydroxy substituent.