Crosslinkable Silicone Coating Compositions

A crosslinkable silicone coating composition comprising

• (1) organopolysiloxane(s) containing alkenyl groups and comprising per molecule at least one structural unit of the formula
• O3-n/2RnSi—Y(SiRnO3-n/2)a (I),
• at least 2 units of the formula
• R1RbSiO(3-b)/2 (II),
• and units of the formula
• RcSiO(4-c)/2 (III),
• where
• a is 1 or 2,
• b is 0, 1 or 2,
• c is 1, 2 or 3,
• n is 0 or 1,
• R at each occurrence may be identical or different and is a monovalent, SiC-bonded organic radical having 1 to 30 C atoms, optionally containing one or more nonadjacent O atoms and which is free from aliphatic carbon-carbon multiple bonds, and
• R1 is an alkenyl radical having 2 to 4 C atoms, preferably a vinyl radical,
• Y is a divalent or trivalent organic radical having 1 to 30 C atoms,
• with the proviso that the organopolysiloxanes (1) comprise units of the formula (II) in molar amounts such that the concentration of alkenyl radicals R1 in organopolysiloxanes (1) is less than 2 meq/g,
• (2) organopolysiloxanes containing Si-bonded hydrogen atoms,
• (3) at least one catalyst which promotes the addition of Si-bonded hydrogen to an aliphatic multiple bond, and
• (4) optionally, inhibitors.