Organopolysiloxane composition for use in release paper or release film

An organopolysiloxane composition for release paper or release film consisting of the following components (A) to (D):

• (A) an organopolysiloxane having at least two silicon-bonded alkenyl groups per molecule, but not at least three (meth)acrylic groups,
• (B) an organohydrogenpolysiloxane having on the average at least two silicon-bonded hydrogen atoms (i.e., Si—H groups) per molecule, but not at least three (meth)acrylic groups, in such an amount that the moles of Si—H groups in component (B) is 1 to 5 times the moles of alkenyl groups in component (A),
• (C) an organopolysiloxane compound having at least three (meth)acrylic groups per molecule and represented by the general formula (3)
• MiaM1AbD1cD1AdT1eT1AfQ1g (3)
• wherein M1 is R13SiO1/2, M1A is R12ASIO1/2, D1 is R2SiO2/2, D1A is R1ASIO2/2, T1 is R1SiO3/2, T1A is ASiO3/2, and Q1 is SiO4/2,
• R1 is each independently a C1-C18 unsubstituted or substituted monovalent hydrocarbon group, or alkoxy group, hydroxy group, epoxy group, or polyoxyalkylene group,
• wherein in the groups R12ASiO1/2, R1ASIO2/2, and ASiO3/2, A is CH2═CR2COR3—,
• R2 is hydrogen or methyl,
• R3 is OR4 or R4,
• R4 is a C1-C20 divalent group which may have a branched or cyclic structure and may contain an epoxy group, ester bond, urethane bond, ether bond, isocyanate bond, or hydroxy group,
• the subscript a is an integer of 0 to 10,
• the subscript b is an integer of 0 to 5, wherein b is an integer of 2 to 5 when a is 0, and b is an integer of 1 to 5 when a is 1,
• the subscript c is an integer of 5 to 300,
• the subscript d is an integer of 3 to 200,
• the subscripts e and f each are an integer of 0 to 10, and
• the subscript g is 0 or 1;
• and
• wherein the organopolysiloxane compound has a weight average molecular weight of at least 1,000, in an amount of 0.01 to 5 parts by weight per 100 parts by weight of component (A), and
• (D) a platinum group metal base catalyst in an amount to give a platinum concentration of 1 to 100 ppm by weight based on the total weight of components (A), (B), (C), and (D), and optionally further consisting of one or more of:
• (E) a reaction inhibitor,
• organic solvent,
• aryl group-containing silicone resins other than components (A) to (C), and silica.