Crosslinkable composition comprising 100 parts by weight of compounds of the formula Y-[(CR 1 2) b -SiR a (OR 2) 3-a] x where Y is an x-valent organic polymer radical bonded via nitrogen, oxygen, sulphur, or carbon and which comprises, as polymer chain, polyoxyalkylene, hydrocarbon polymer, polyurethane, polyester, polyamide, polyacrylate, polymethacrylate, or polycarbonate, R may be identical or different and is a monovalent, optionally substituted, SiC-bonded hydrocarbon radical, R 1 may be identical or different and is hydrogen atom or a monovalent, optionally substituted hydrocarbon radical, which may be attached to the carbon atom by nitrogen, phosphorus, oxygen, sulphur or carbonyl group, R 2 may be identical or different and is hydrogen atom or a monovalent, optionally substituted hydrocarbon radical, X is an integer from 1 to 10, a may be identical or different and is 0, 1, or 2, and b may be identical or different and is an integer from 1 to 10, and more than 50 parts by weight of silicone resins comprising units of the formula R 3 c (R 4 O) d R 5 e SiO (4-c-d-e)/2, where R 3 may be identical or different and is hydrogen atom, a monovalent, SiC-bonded, optionally substituted aliphatic hydrocarbon radical, or a divalent, optionally substituted, aliphatic hydrocarbon radical which bridges two units of the formula, R 4 may be identical or different and is hydrogen atom or a monovalent, optionally substituted hydrocarbon radical, R 5 may be identical or different and is a monovalent, SiC-bonded, optionally substituted aromatic hydrocarbon radical, c is 0, 1, 2, or 3, d is 0, 1, 2, or 3, and e is 0, 1, or 2, with the proviso that the sum of c+d+e is less than or equal to 3 and in at least 40% of the units of the formula the sum c+e is 0 or 1, excepting composition obtainable by mixing in a suitable mixing device, of 20.0 g of GENIOSIL ® STP-E10 (commercially available from Wacker Chemie AG), 10.0 g of GENIOSIL ® STP-E15 (commercially available from Wacker Chemie AG), 23.5 g of silicone resin (SILRES ® SY 231; commercially available from Wacker Chemie AG), 2.0 g of vinyltrimethoxysilane, 1.0 g of hydrophobic silica (HDK ® H2000; commercially available from Wacker Chemie AG), 20.5 g of aluminium trihydrate, 21.0 g of talc and 2.0 g of 3-aminopropyltrimethoxysilane. 100 parts by weight of compounds of the formula Y-[(CR 1 2) b -SiR a (OR 2) 3-a] x where Y is an x-valent organic polymer radical bonded via nitrogen, oxygen, sulphur, or carbon and which comprises, as polymer chain, polyoxyalkylene, hydrocarbon polymer, polyurethane, polyester, polyamide, polyacrylate, polymethacrylate, or polycarbonate, R may be identical or different and is a monovalent, optionally substituted, SiC-bonded hydrocarbon radical, R 1 may be identical or different and is hydrogen atom or a monovalent, optionally substituted hydrocarbon radical, which may be attached to the carbon atom by nitrogen, phosphorus, oxygen, sulphur or carbonyl group, R 2 may be identical or different and is hydrogen atom or a monovalent, optionally substituted hydrocarbon radical, X is an integer from 1 to 10, a may be identical or different and is 0, 1, or 2, and b may be identical or different and is an integer from 1 to 10, and Y is an x-valent organic polymer radical bonded via nitrogen, oxygen, sulphur, or carbon and which comprises, as polymer chain, polyoxyalkylene, hydrocarbon polymer, polyurethane, polyester, polyamide, polyacrylate, polymethacrylate, or polycarbonate, R may be identical or different and is a monovalent, optionally substituted, SiC-bonded hydrocarbon radical, R 1 may be identical or different and is hydrogen atom or a monovalent, optionally substituted hydrocarbon radical, which may be attached to the carbon atom by nitrogen, phosphorus, oxygen, sulphur or carbonyl group, R 2 may be identical or different and is hydrogen atom or a monovalent, optionally substituted hydrocarbon radical, X is an integer from 1 to 10, a may be identical or different and is 0, 1, or 2, and b may be identical or different and is an integer from 1 to 10, and more than 50 parts by weight of silicone resins comprising units of the formula R 3 c (R 4 O) d R 5 e SiO (4-c-d-e)/2, where R 3 may be identical or different and is hydrogen atom, a monovalent, SiC-bonded, optionally substituted aliphatic hydrocarbon radical, or a divalent, optionally substituted, aliphatic hydrocarbon radical which bridges two units of the formula, R 4 may be identical or different and is hydrogen atom or a monovalent, optionally substituted hydrocarbon radical, R 5 may be identical or different and is a monovalent, SiC-bonded, optionally substituted aromatic hydrocarbon radical, c is 0, 1, 2, or 3, d is 0, 1, 2, or 3, and e is 0, 1, or 2, R 3 may be identical or different and is hydrogen atom, a monovalent, SiC-bonded, optionally substituted aliphatic hydrocarbon radical, or a divalent, optionally substituted, aliphatic hydrocarbon radical which bridges two units of the formula, R 4 may be identical or different and is hydrogen atom or a monovalent, optionally substituted hydrocarbon radical, R 5 may be identical or different and is a monovalent, SiC-bonded, optionally substituted aromatic hydrocarbon radical, c is 0, 1, 2, or 3, d is 0, 1, 2, or 3, and e is 0, 1, or 2,