Synthetic Polyester Raw Material BPEF

9,9-Bis(4-(2-Hydroxyethoxy) phenyl) Fluorene(BPEF)

Preparation:

Add 35 g of bisphenol hydrazone to a 500 ml pressure reaction kettle, add 200 ml of absolute ethanol, add a solution of 2 g of sodium hydroxide with 2 ml of water, install the reaction kettle, pass in the stirring cooling water, turn on the stirring, and turn on Heat and raise the temperature to 30 ° C. Start to introduce 11.5g of ethylene oxide (once every 5 minutes). The introduction time is 30 minutes. After the introduction, raise the temperature to 35 ° C and react for 9 hours. After the reaction, the reaction solution was poured into a 500 ml beaker, left to cool and precipitate, and then filtered with suction to recover the liquid absolute ethanol for reuse, the solid was recrystallized from 153 ml of toluene and heated to Dissolve at 85 ° C, leave to stand, gradually cool from 70 ° C to 10 ° C, precipitate crystals, and filter with suction; concentrate the mother liquor and recrystallize; perform the same operation twice; dry in vacuum to obtain 39.4 g of 9,9-Bis(4-(2-Hydroxyethoxy) phenyl) Fluorene(BPEF) white solid, yield 90.0 %, The purity of the product obtained by liquid chromatography is 98.5% 9,9-Bis(4-(2-Hydroxyethoxy) phenyl) Fluorene(BPEF), and the platinum and cobalt color is about 15Hazen

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