Reactive silicone composition, hotmelt material made therefrom, and curable hotmelt composition

A reactive silicone composition for forming a hotmelt material, comprising:

• (A) an organopolysiloxane resin represented by the following average unit formula:
• (R13SiO1/2)a(R12SiO2/2)b(R1SiO3/2)c(SiO4/2)d(R2O1/2)e
• wherein each R1 independently is a monovalent hydrocarbon group having 1 to 10 carbon atoms, with the proviso that 4 to 12 mol % of all R1 in a molecule are alkenyl groups;
• R2 is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms;
• and a, b, c, d, and e are numbers that satisfy:
• 0.35≦a≦0.60;
• 0≦b≦0.1;
• 0≦c≦0.1;
• 0.40≦d≦0.65;
• 0≦e≦0.05;
• and a+b+c+d=1, in an amount of 15 to 50% by mass of total amount of components (A) to (C);
• (B) an organopolysiloxane resin represented by the following average unit formula:
• (R33SiO1/2)f(R32SiO2/2)g(R3SiO3/2)h(SiO4/2)i(R4O1/2)j
• wherein each R3 independently is a monovalent hydrocarbon group having 1 to 10 carbon atoms except for an alkenyl group;
• R4 is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms;
• and f, g, h, i, and j are numbers that satisfy:
• 0.35≦f≦0.55;
• 0≦g≦0.2;
• 0≦h≦0.2;
• 0.45≦i≦0.65;
• 0≦j≦0.05;
• and
• f+g+h+i=1, in an amount of 20 to 45% by mass of total amount of components (A) to (C);
• (C) a diorganopolysiloxane represented by the following average formula:
• R53SiO(SiR52O)kSiR53
• wherein each R5 independently is a monovalent hydrocarbon group having 1 to 10 carbon atoms, with the proviso that at least two R5 in a molecule are alkenyl groups;
• and
• k is a number of 20 to 5,000, in an amount of 10 to 40% by mass of total amount of components (A) to (C);
• (D) an organohydrogenpolysiloxane having two silicon-bonded hydrogen atoms in a molecule, in an amount that component (D) gives 0.1 to 0.6 silicon-bonded hydrogen atoms per one alkenyl group in components (A) and (C);
• (E) an organohydrogenpolysiloxane having at least three silicon-bonded hydrogen atoms in a molecule, in an amount that component (E) gives 0.1 to 0.5 silicon-bonded hydrogen atoms per one alkenyl group in components (A) and (C);
• and
• (F) a hydrosilylation catalyst in a sufficient amount to conduct a hydrosilylation of the composition.