Self-adhesive addition-crosslinking silicone compositions

A self-adhesive addition-crosslinking silicone composition, comprising

• (A) diorganopolysiloxane(s) of the general formula (1)
• R1aR2 bSiO(4−a−b)/2 (1),
• in which
• R1 is a hydroxyl radical or a monovalent, optionally halogen-substituted C1-20 hydrocarbon radical optionally containing O, N, S or P atoms and free of aliphatically unsaturated groups,
• R2 is a monovalent, aliphatically unsaturated, optionally halogen-substituted C2-10 hydrocarbon radical optionally containing O, N, S or P atoms,
• b has a value from 0.003 to 2,
• with the proviso that 1.5<(a+b)<3.0, that on average at least two aliphatically unsaturated radicals R2 are present per molecule, and that the viscosity of the diorganopolysiloxane(s) (A), determined at 25° C., is 1 mPa·s to 40,000 Pa·s;
• (B) organohydrogenpolysiloxane(s) of the general formula (2)
• R3cR4dR5eHfSiO(4−c−d−2e−f)/2 (2)
• in which
• R3 is a monovalent aliphatically saturated C1-20 hydrocarbon radical,
• R4 is (a) an optionally halogen-substituted monovalent C6-15 hydrocarbon radical which contains at least one aromatic C6-ring, or
• (b) a halogen-substituted, saturated monovalent C2-20 hydrocarbon radical optionally containing O, N, S or P atoms,
• R5 is a bivalent, optionally halogen-substituted C6-20 hydrocarbon radical Si-bonded at both ends, optionally containing O, N, S or P atoms,
• c, d, e and f denote positive numbers, with the proviso that the organohydrogenpolysiloxane
• (B) contains on average 3 to less than 20 SiH groups per molecule, that the relationship:
• 0.05<100 (d+e)/(c+d+e+f)<12 is fulfilled, and that the viscosity of the organohydrogenpolysiloxane (B), determined at 25° C., is 1 mPa·s to 100 Pa·s;
• (C) organosilicon compound(s) having epoxy groups and hydrolyzable groups of the general formula (3)
• R7gR8hR9iSiO(4−g−h−i)/2 (3)
• and/or their partial hydrolysis products, in which
• R7 is a hydrogen radical, a hydroxyl radical or an optionally halogen- or cyano-substituted, saturated monovalent C1-20 hydrocarbon radical optionally containing O, N, S or P atoms,
• R8 is an optionally halogen-substituted monovalent C2-20 hydrocarbon radical containing at least one epoxy group, optionally containing O, N, S or P atoms,
• R9 is a hydrolyzable, monovalent optionally halogen-substituted C1-20 hydrocarbon radical bonded to Si via an Si—O—C—, Si—O—N— or Si—N— link, optionally containing O, N, S or P,
• with the proviso that 4>g≧0, 4>h>0, 4>i>0, 4≧(h+i)>0 and 4≧(g+h+i);
• and
• (D) a hydrosilylation catalyst.