SULFUR-CONTAINING POLYMERS - NEW POLYTHIOCARBONATES AND POLYDITHIOCARBONATE BASED ON 4,4'-ISOPROPYLIDENEDIBENZENE-THIOL

New sulfur-containing polycarbonates have been prepared by interfacial polycondensation of 4,4'-isopropylidenedibenzenethiol with phosgene, bisphenol-A bischloroformate and bisphenol-A polycarbonate oligomers ( -OH/-O-CO-Cl terminated); high-molecular-weight polymers were obtained . The influence of the nature of the phase transfer catalyst on the yi eld and on the molecular weight of the polymers was studied. From ther mogravimetry (TG) analysis it was possible to observe that the substit ution of the oxygen atoms by sulfur atoms leads to less thermally stab le polymers compared with the corresponding polycarbonate (bisphenol-A polycarbonate).