Composition and siloxane-based thermoplastic resin using same, and methods for producing same

A composition comprising a siloxane block-containing diol compound, wherein the siloxane block-containing diol compound is represented by the following formula (I):

• wherein
• R1 and R2 are each independently an alkyl group having 1 to 20 carbon atoms which may have a substituent, or an aryl group having 6 to 30 carbon atoms which may have a substituent,
• m is an integer of 1 to 25,
• n is an integer of 3 to 200,
• the Xs each independently represent any of the following formulae (I1) to (I5):
• A1 and A2 are each independently —(CR6AR6B)q1— or —(O—(CR6AR6B)q2)q3—, wherein R6A and R6B are each independently H or an alkyl group having 1 to 6 carbon atoms, q1 is an integer of 0 to 10, q2 is an integer of 0 to 10, and q3 is an integer of 0 to 10,
• R3 and R4 each independently represent a halogen atom, an aliphatic hydrocarbon group having 1 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an aromatic hydrocarbon-oxy group having 6 to 20 carbon atoms, or a cycloalkoxyl group having 3 to 20 carbon atoms,
• p1 and p2 are each independently an integer of 0 to 4,
• R5s each independently represent H or an alkyl group having 1 to 6 carbon atoms,
• X1 and X2 are each independently a single bond or a group shown below:
• wherein R7 and R8 are each independently H, a halogen atom, an aliphatic hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, an alkoxyl group having 1 to 20 carbon atoms which may have a substituent, or an aromatic hydrocarbon group having 6 to 20 carbon atoms which may have a substituent, or R7 and R8 may be bonded to each other to form a carbocyclic ring having 3 to 20 carbon atoms or a 5 to 12 membered heterocycle, R9 and R10 each independently represent H or an alkyl group having 1 to 6 carbon atoms, R11 to R16 each independently represent a halogen atom, an aliphatic hydrocarbon group having 1 to 20 carbon atoms which may have a substituent, an alkoxyl group having 1 to 20 carbon atoms which may have a substituent, or an aromatic hydrocarbon group having 6 to 12 carbon atoms which may have a substituent, r1 is an integer of 2 to 20,
• the X3s each independently represent a divalent aromatic hydrocarbon group having 15 to 32 carbon atoms,
• the X4s each independently represent a divalent group containing one or more hydrocarbon rings or heterocycles, wherein the divalent group containing one or more hydrocarbon rngs or heterocycles is selected from the group consisting of the following structures:
• X5s each independently represent a divalent saturated heterocyclic group.