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N.Daito J.Yoshida K.Mae 《复旦学报(自然科学版)》2007,(5)
1 Results Bisphenol-F,which is synthesized by the acid catalyzed condensation reaction of phenols and form aldehyde is a useful raw material of epoxy resins having superior heat resistance and low viscosity. The commodity bisphenol,however,includes high molecular weight compounds,which are derived from tris-phenols and other highly condensed compounds.Such contaminants impair largely the feature of low viscosity which the bisphenol-F epoxy resin has.To overcome this problem,the molar ratio of phenol/for... 相似文献
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