| 摘要 |
Aromatic polyester monomer of formula (III) is prepd. by reacting 1 mole of (I) with 4 moles of (II). In the formula, X=H, Cl, Br, Ph or C1-4 alkyl. Thus, put p-acetoxybenzoic acid (ABA) 180.15g and hydroquinone diacetate (HD) 582.54g into flask, heat to near 195 deg.C under N atm. and slowly elevate temp. to 265 deg.C with distilling of acetic acid, crystg. in MeOH, washing with MeOH, IN NaHCO3 and water, recrystg. in dioxane to give APB(yield 91.36%, mp 102.3-103.6 deg.C).
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