Patent ID: 7470803

Claim:
A compound represented by a formula (1) wherein X represents a silyl group which has a chlorine atom and may have a substituent, a silyl group which has a C1 to C4 alkoxy group and may have a substituent, a mercapto group, a C1 to C4 alkylthio group which may have a substituent, a C1 to C10 acylthio group, a disulfide group, or a phosphono group which may have a substituent, R represents a C1 to C20 alkyl group which may have a substituent, a C1 to C20 alkoxy group which may have a substituent an aryl group which may have a substituent, a C1 to C20 alkoxycarbonyl group which may have a substituent, or a halogen atom, R may form a ring with another R, n represents an integer of 1 to 30, m represents an integer of 0 to 5, R may be identical to, or may be different from each other, when m represents 2 or more, G1 represents a single bond or a bivalent saturated or unsaturated hydrocarbon radical having carbon atoms of 1 to 3, Ar represents an aromatic group which may have a substituent, G2 represents O, S or Nr, and r represents a hydrogen atom or a C1 to C4 alkyl group.