4,4'-Dihydroxybiphenyl → Xanthene biphenylene

Participants

Reaction Steps

0.972 g (manufactured by DAINIPPON INK & CHEMICALS Co., Ltd., “EXA7335”, 2 mmol) of 2,7-diglycidyloxy-1,3,4,5,6,8-hexamethyl-9-phenylxanthene, 0.372 g (2 mmol) of 4,4′-dihydroxybiphenyl, 2.62 mg (0.01 mmol) of triphenylphosphine and 1.34 g of N,N-dimethylacetamide were reacted under a nitrogen atmosphere at 160° C. for 4 hours. After cooling, the reaction solution was diluted with N,N-dimethylacetamide so as to adjust the nonvolatile content to 15% and then added dropwise in 100 ml of water. The resulting white turbid dispersion was stirred at room temperature for one hour. After the dispersion was centrifuged and suction-filtered, the resulting precipitate was washed with methanol and then vacuum-dried at 60° C. to obtain a xanthene-biphenylene copolymer type linear epoxy resin. The amount of the resulting xanthene-biphenylene copolymer type linear epoxy resin was 1.033 g and the yield was 77%.

Provenance & Evidence