| 摘要 |
PROBLEM TO BE SOLVED: To obtain an electronic material of the next generation, which is a resin having low dielectric characteristics coping with high-frequency waves, and at the same time, having such toughness that micro cracks are hardly generated by a heat shock, or the like, and whose molding processability and compatibility with another resin have been improved. SOLUTION: A bivalent phenol having a rigid biphenyl skeleton, and having a methyl group at the 2-position to relieve an oxidation speed, and a monovalent phenol having methyl groups at least at the 2- and 6-positions are subjected to oxidative polymerization in a ketone solvent. An oilgomer of a bifunctional phenylene ether soluble in a general purpose solvent is efficiently synthesized through this process. This process enables improving of molding processability and compatibility with another resin, and an easy modification reaction of a terminal phenolic hydroxyl group while holding excellent electric properties and toughness of the polyphenylene ether.
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