Methylhydroquinone (1.95 moles, 242.1 g), bisphenol-A (0.05 moles, 11.41 g), chlorophenyl carbonate (2.06 moles, 582.8 g) and tetrabutylammonium tetraphenylborate (1.6 mmol, 0.899 g) were added to a 1L 3-neck flask and melted at 165° C. with overhead stirring. 89 wt % chlorophenol (3.52 mole, 365 mL) was collected by distillation at about 220° C. followed by a slight vacuum at 230° C. The molten prepolymer was quickly poured onto a foil-lined pyrex dish to obtain a solid (370 g). Subsequent polymerization took place in a 2CV Helicone reactor (500 mL capacity). The prepolymer (200 g) was added at 300° C. and stirred slowly until molten. Once molten, vacuum was applied and the system heated to 330° C. (stirrer setting=7.5). After about 10 minutes, the vacuum reached about 2.0 mm Hg. The polymer was extruded after about 20 minutes to obtain about 120 g of brittle light pink strands (flexible in clear areas and brittle in cloudy areas).
