Siloxane polymer, siloxane polymer composition, and molded article

A siloxane polymer, having repeating units represented by Formulae (1) and (4) and terminal groups represented by Formulae (5L) and (5R) at left and right terminals:

• wherein Formula (5L) represents a terminal group bonded to a left side of the formula, and Formula (5R) represents a terminal group bonded to a right side of the formula,
• A represents the following structure,
• each R0 independently represents an aryl group having 6 to 20 carbons or a cycloalkyl group having 5 to 6 carbons, and in the aryl group having 6 to 20 carbons and the cycloalkyl group having 5 to 6 carbons, arbitrary hydrogen atom may be independently substituted with a fluorine atom or an alkyl group having 1 to 20 carbons,
• each R1 independently represents a hydrogen atom, an aryl group having 6 to 20 carbons, a cycloalkyl group having 5 to 6 carbons, an arylalkyl group having 7 to 40 carbons, or an alkyl group having 1 to 40 carbons, and in the aryl group in the aryl group having 6 to 20 carbons, the cycloalkyl group having 5 to 6 carbons and the arylalkyl group having 7 to 40 carbons, arbitrary hydrogen atom may be independently substituted with a fluorine atom or an alkyl group having 1 to 20 carbons, and in an alkylene group in the arylalkyl group having 7 to 40 carbons, arbitrary hydrogen atom may be substituted with a fluorine atom, and arbitrary —CH2— may be independently substituted with —O—, —CH═CH—, or a cycloalkylene group having 5 to 20 carbons, and in the alkyl group having 1 to 40 carbons, arbitrary hydrogen atom may be independently substituted with a fluorine atom, and arbitrary —CH2— may be independently substituted with —O— or a cycloalkylene group having 5 to 20 carbons,
• each R2 independently represents a hydroxyl group, an aryl group having 6 to 20 carbons, a cycloalkyl group having 5 to 6 carbons, an arylalkyl group having 7 to 40 carbons, or an alkyl group having 1 to 40 carbons, and in the aryl group having 6 to 20 carbons, the cycloalkyl group having 5 to 6 carbons and an aryl group in the arylalkyl group having 7 to 40 carbons, arbitrary hydrogen atom may be independently substituted with a fluorine atom or an alkyl group having 1 to 20 carbons, and in an alkylene group in the arylalkyl group having 7 to 40 carbons, arbitrary hydrogen atom may be substituted with a fluorine atom, and arbitrary —CH2— may be independently substituted with —O—, —CH═CH—, or a cycloalkylene group having 5 to 20 carbons, and in the alkyl group having 1 to 40 carbons, arbitrary hydrogen atom may be independently substituted with a fluorine atom, and arbitrary —CH2— may be independently substituted with —O— or a cycloalkylene group having 5 to 20 carbons,
• each R3 independently represents an alkylene group having 1 to 40 carbons, and in the alkylene group having 1 to 40 carbons, arbitrary —CH2— may be independently substituted with —O— or a cycloalkylene group having 5 to 20 carbons,
• each R4 independently represents an aryl group having 6 to 20 carbons, a cycloalkyl group having 5 to 6 carbons, an arylalkyl group having 7 to 40 carbons, or an alkyl group having 1 to 40 carbons, and in the aryl group having 6 to 20 carbons, the cycloalkyl group having 5 to 6 carbons and an aryl group in the arylalkyl group having 7 to 40 carbons, arbitrary hydrogen atom may be independently substituted with a fluorine atom or an alkyl group having 1 to 20 carbons, and in an alkylene group in the arylalkyl group having 7 to 40 carbons, arbitrary hydrogen atom may be substituted with a fluorine atom, and arbitrary —CH2— may be independently substituted with —O—, —CH═CH—, or a cycloalkylene group having 5 to 20 carbons, and in the alkyl group having 1 to 40 carbons, arbitrary hydrogen atom may be independently substituted with a fluorine atom, and arbitrary —CH2— may be independently substituted with —O— or a cycloalkylene group having 5 to 20 carbons,
• each R5 independently represents a crosslinkable functional group which is a hydroxyl group, hydrogen or an alkenyl group having 2 to 40 carbons, an alkyl group having 1 to 40 carbons, a halogen atom, an acyl group having 1 to 15 carbons, an alkoxyl group having 1 to 15 carbons, an oxime having 1 to 15 carbons, an amino group which may have a substituent, an amide having 1 to 15 carbons which may have a substituent, an aminoxy group which may have a substituent, or a vinyl alcohol residue having 2 to 15 carbons which may have a substituent, and in the amino and aminoxy groups which have a substituent, the substituent has 1 to 15 carbons,
• each p independently represents a real number of 1 or more, and z represents a positive real number, and
• * indicates a binding position.