Patent ID: 7842771

Claim:
A self-adhesive addition-crosslinking silicone composition comprising (A) 100 parts by weight of at least one diorganopolysiloxane of the formula (1) R 1 a R 2 b SiO (4-a-b)/2 (1) in which R 1 is hydroxyl radical or a monovalent, optionally halogen-substituted C 1-20 hydrocarbon radical optionally containing O, N, S or P atoms, and being free from aliphatically unsaturated groups, R 2 is a monovalent, aliphatically unsaturated, optionally halogen-substituted C 2-10 hydrocarbon radical optionally containing O, N, S or P atoms, b is from 0.0003 to 2, with the provisos that 1.5<(a+b)≦3.0, that per molecule there are on average at least two aliphatically unsaturated radicals R 2 , and that the viscosity of the diorganopolysiloxanes (A) as determined at 25° C. is 1 mPa·s to 40,000 Pa·s, (B) 1-5 parts by weight of at least one organohydropolysiloxane of the formula (2) R 3 c R 4 d R 5 e H f SiO (4-c-d-2e-f)/2 (2) where R 3 is a monovalent aliphatically saturated C 1-10 hydrocarbon radical, R 4 (a) is an optionally halogen-substituted monovalent C 6-20 hydrocarbon radical which contains at least one aromatic C 6 ring, and/or (b) is a halogen-substituted, saturated monovalent C 2-20 hydrocarbon radical optionally containing O or N atoms, R 5 is an optionally halogen-substituted C 6-24 hydrocarbon radical optionally containing O, N, S or P atoms which is divalent and is Si-bonded at both ends, c and f are positive numbers, and d and e are zero or a positive number, with the provisos that d and e cannot simultaneously be zero, that the viscosity of the organohydropolysiloxane (B) as determined at 25° C. is 5 mPa·s to 5 Pa·s, and the organohydrogensiloxane (B) contains per molecule 5 to 18 SiH groups and less than 12 mol percent phenyl groups, (C) 0.1 to 3 parts by weight of at least one organohydrooligosiloxane of the formula (3), (R 6 HSiO) n (3), where R 6 is a monovalent, optionally halogen-substituted C 1-10 hydrocarbon radical, and n is 4, 5, 6, 7, or 8, (D) 1×10 −5 to 1×10 −2 parts by weight of at least one hydrosilylation catalyst.