NCOCH2(CF2)(6)CH2OCN cyanate ester resin. A detailed study

The NCOCH2(CF2)(6)CH2OCN fluoromethylene cyanate ester monomer and resin ar e synthesized and characterized. The monomer is prepared by a large-scale b ench-top synthesis, characterized by differential scanning calorimetry, inf rared, H-1-, C-13- 15N-, and F-19-NMR spectroscopies and analyzed for catal ytically active impurities. Conversion of the monomer to prepolymer and cur ed resin is characterized by IR and NMR spectroscopies and kinetically anal yzed. Resin properties characterization includes thermal, tensile, dynamic mechanical, dielectric, refractive index, thermodielectric and thermogravim etric stabilities, and water absorption. Relevant property comparisons with the commercial AroCy F cyanate ester resin (6F bisphenol A dycyanate) and a Jeffamine-bisphenol diglycidyl ether epoxy are made. (C) 1999 John Wiley & Sons, Inc.