1/7/2011
Synthesis and properties of novel fluorinated epoxy resins
(148–155)Journal of Applied Polymer  Science 120 #1 (2011)
Ge et al of the Chinese Academy of Sciences, China synthesized  4,4′-bis(2,3-epoxypropoxy-phenyl)-1-(3-trifluoromethylphenyl)-2,2,2-trifluoroethane (BEF) from the coupling of phenol with 3′-trifluoromethyl-2,2,2-trifluroacetophenone catalyzed by Lewis acid to yield an intermediate compound, which was then converted to the fluorinated epoxy by epoxidation with epichlorohydrin.  BEF could be thermally cured with organic anhydride or aromatic amine as curing agents to produce thermally cured epoxy resins.  The fluorinated epoxy resins have improved electric insulating and dielectric properties as well as lower moisture adsorption compared with the corresponding commercial Bisphenol A type epoxy resins.  (RDC 1/10/2011)