Patent ID: 6794481
Filing Date: 2004-09-21
Classification: C08G,C08L,H05K,Y10T

Abstract:
A bifunctional phenylene ether oligomer of the formula (1), obtained by oxidation polymerization of a bivalent phenol of the formula (2) and a monovalent phenol of the formula (3),H&Brketopenst;Oâ€”Y&Brketclosest;a&Parenopenst;Oâ€”Xâ€”&Parenclosest;&Brketopenst;Yâ€”O&Brketclosest;bHâ€ƒâ€ƒ(1) HOâ€”Xâ€”OHâ€ƒâ€ƒ(2) Yâ€”OHâ€ƒâ€ƒ(3) (wherein â€”Xâ€” is represented by the formula (2â€²), in which R2, R3, R4, R8 and R9 may be the same or different and are a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group, R5, R6 and R7 may be the same or different and are a hydrogen atom, a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group, Yâ€”Oâ€” is represented by the formula (3â€²), in which R10 and R11 may be the same or different and are a halogen atom or an alkyl group having 6 or less carbon atoms or a phenyl group, R12 and R13 may be the same or different and are a hydrogen atom, a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group, provided that Yâ€”Oâ€” is an arrangement of one kind of structure defined by the formula (3â€²) or a random arrangement of at least two kinds of structures defined by the formula (3â€²), and each of a and b is an integer of 0 to 300, provided that at least either a or b is not 0), R2, R3, R4, R8, R9, R10 and R11 in the formula (2â€²) and the formula (3â€²) being required not to be a hydrogen atom.