| 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), n nH O—Y a O—X—O Y—O b H (1) n nHO—X—OH (2) n nY—OH (3) n nwherein —X— is represented by the formula (2′), n n nand Y—O— is represented by the formula (3), n nR2, R3, R4, R8, R9, R10 and R11 in the formula (2′) and the formula (3′) being required not to be a hydrogen atom, and its use. |