Addition-curable silicone adhesive composition

An addition-curable silicone adhesive composition comprising:

• (A) at least one of (i) a linear organopolysiloxane with a viscosity of 50 to 10,000,000 mPa·s at 23° C., having the formula (1):
• R2R12SiO(R12SiO)mSiR12R2 (1)
• wherein R1 is each independently an unsubstituted or substituted monovalent hydrocarbon group free of an addition-reactive carbon-carbon unsaturated bond, R2 is an alkenyl group, and m is an integer of 1 to 10,000, and (ii) an organopolysiloxane having the average formula (2):
• (R13SiO1/2)p(R2aR13-aSiO1/2)q(SiO4/2)r (2)
• wherein R1 is each independently an unsubstituted or substituted monovalent hydrocarbon group free of an addition-reactive carbon-carbon unsaturated bond, R2 is an alkenyl group, p, q and r are numbers in the range:
• p>0, q>0, r>0, and p+q+r=1, a is 1 or 2,
• (B) an organohydrogenpolysiloxane having the average formula (3):
• (HbR13-bSiO1/2)s(R13SiO1/2)2-s(HR11SiO2/2)t(R12SiO2/2)u (3)
• wherein R1 is each independently an unsubstituted or substituted monovalent hydrocarbon group free of an addition-reactive carbon-carbon unsaturated bond, b is 1 or 2, s, t and u are numbers in the range:
• 0≤s≤2, 2≤s+t, 2≤t+u≤800, and 0.05≤t/(t+u)≤0.5,
• (C) a hydrosilylation reaction catalyst, and
• (D) 0.05 to 5 parts by weight per 100 parts by weight of components (A) and (B) combined of at least one of a linear organosiloxane compound having the average formula (4) and a cyclic organopolysiloxane having the average formula (5):
• (AcR33-cSiO1/2)v(R33 SiO1/2)2-v(AR31SiO2/2)w(R32SiO2/2)x (4)
• (AR31SiO2/2)y(R32SiO2/2)z (5)
• wherein A is each independently an alicyclic epoxy group represented by the structural formula (6):
• wherein the asterisk (*) designates a point of attachment to a silicon atom, R3 is each independently an unsubstituted or substituted monovalent hydrocarbon group, c is 1 or 2, v is 0, 1 or 2, w and x are numbers in the range:
• 0≤w+x≤100, with the proviso that v and w are not equal to 0 at the same time, y and z are numbers in the range:
• y≥1, z≥0, and 3≤y+z≤5, wherein a ratio of the total number of Si—H groups including Si—H groups in component (B) to the total number of alkenyl groups in component (A) and addition-reactive carbon-carbon unsaturated bonds in component (D) is from 0.8 to 1.5.