Patent ID: 7476446

Claim:
An addition-reactive silicon adhesive composition comprising: 20 to 80 parts by weight of a diorganopolysiloxane (A′), having 2 or more alkenyl groups which has 2 or more alkenyl groups and is represented by any one of the following formulae R 4 (3-a) X a SiO—(R 4 XSiO) m —(R 4 2 SiO)n-SiR 4 (3-a) X a R 4 2 (HO)SiO—(R 4 XSiO)m+2-(R 4 2 SiO) n —SiR 4 2 (OH) where R 4 is a monovalent hydrocarbon group free of an aliphatic unsaturated bond, X is an organic group having an alkenyl group, a is an integer of from 0 to 3, m is at least 0, provided that a and m being not zero at the same time, n is at least 100, and m+n is such a number that a viscosity of the diorganopolysiloxane at 25 degrees C is 500 mPa·s or higher, 80 to 20 parts by weight of a polyorganosiloxane (B) comprising R 1 3 SiO 0.5 unit and SiO 2 unit in a molar ratio of the R 1 3 SiO 0.5 unit to the SiO 2 unit of from 0.6 to 1.0, wherein R 1 is a monovalent hydrocarbon group having 1 to 10 carbon atoms, 0.01 to 1.0 part by weight, based on a total of(A′) and (B) of 100 parts by weight, of a hindered amine compound (C) having the moiety represented by the following formula, wherein R is a monovalent hydrocarbon group having 1 to 6 carbon atoms, a polyorganosiloxane (E) having SiH group in such an amount that a molar ratio of the SiH group to the alkenyl group of the component (A′) ranges from 0.5 to 20, 0 to 8.0 part by weight, based on a total of (A′) and (B) of 100 parts by weight, of a retarder (F), and a platinum catalyst (G) in such an amount that an amount as platinum ranges from 1 to 5000 ppm based on a total of (A′) and (B) of 100 parts by weight.