Patent ID: 8785585

Claim:
A solution of a temporary adhesive composition comprising: (A) a cured product of an organopolysiloxane having a weight-average molecular weight of at least 15,000, obtained by a hydrosilylation reaction between an alkenyl group-containing organopolysiloxane (A1) and a hydrosilyl group-containing compound (A2) in presence of a platinum group metal-based catalyst, wherein (A1) is an alkenyl group-containing organopolysiloxane having a weight-average molecular weight exceeding 2,000, comprising: (I) 35 to 99 mol % of siloxane units represented by R 1 SiO 3/2 (T units), (II) 0 to 49 mol % of siloxane units represented by R 2 R 3 SiO 2/2 units (D units) and (III) 1 to 25 mol % of siloxane units represented by R 4 R 5 R 6 SiO 1/2 units (M units), wherein each of R 1 to R 6 represents an unsubstituted or substituted monovalent hydrocarbon group of 1 to 10 carbon atoms, in which alkenyl groups bonded to silicon atoms represent at least 2 mol % of all organic groups bonded to silicon atoms, and (A2) is a hydrosilyl group-containing compound comprising: an organohydrogenpolysiloxane represented by an average composition formula (1): R 7 a H b SiO (4-a-b)/2 (1) wherein R 7 represents a monovalent hydrocarbon group other than an alkenyl group, and a and b are numbers that respectively satisfy 0.75≦a≦2.5, 0.05≦b≦1.0, and 0.8≦a+b≦2.6, and having at least two hydrogen atoms bonded to silicon atoms within each molecule, or a bis-hydrosilyl compound represented by a general formula (2): wherein each of R 8 and R 9 independently represents a monovalent hydrocarbon group other than an alkenyl group, and X represents a divalent organic group, or a combination thereof, in an amount sufficient to provide 0.4 to 1.0 mols of hydrogen atoms bonded to silicon atoms per 1 mol of all the alkenyl groups within the organopolysiloxane (A1), and (B) an organic solvent having a boiling point of not more than 220° C.