Organopolysiloxane composition

An organopolysiloxane composition, comprising:

• (A) an organopolysiloxane expressed by the average unit formula:
• (R31SiO1/2)a(R21SiO2/2)b(R1SiO3/2)c(SiO4/2)d(HO1/2)e
• where R1 each independently represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 10 carbon atoms, and a, b c and d each represent a number satisfying 0≤a≤0.8, 0≤b≤0.8, 0≤c≤0.8, and 0≤d≤0.8, and 0.2≤(a+b)≤0.8, 0.2≤(c+d)≤0.8, and (a+b+c+d)=1, and e represents a number satisfying 0.05≤e≤0.5;
• (B) an organopolysiloxane expressed by the average unit formula:
• (R32SiO1/2)f(R22SiO2/2)g(R2SiO3/2)h(SiO4/2)i(HO1/2)j
• where R2 each independently represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 10 carbon atoms, and f, g h, and i each represent a number satisfying 0≤f≤1, 0≤g≤1, 0≤h≤0.8, and 0≤i≤0.8, and 0.2≤(f+g)≤1, 0≤(h+i)≤0.8, and (f+g+h+i)=1, and j represents a number satisfying 0≤j<0.05;
• and
• (C) a compound having at least two functional groups in one molecule, the functional groups selected from ether bonds, ester bonds, and alkoxysilyl groups expressed by the general formula:
• Rk3(R4O)(3-k)Si—
• where R3 represents a monovalent hydrocarbon group having 1 to 10 carbon atoms, R4 represents an alkyl group having 1 to 10 carbon atoms, and k represents 0, 1, or 2;
• wherein the amount of component (A) is 2 to 70 mass % of the sum of component (A) and component (B), and the amount of component (C) is an amount in which the sum of the functional groups in component (C) is 0.05 mol or more with regard to 1 mol of the silicon-bonded hydroxyl group in component (A).