Polymerization by phase transfer catalysis, 2 Polythiocarbonates by polymerization of Bisphenol A with thiophosgene

摘要: Poly(oxythiocarbonyloxy-1,4-phenyleneisopropylidene-1,4-phenylene) (1) was obtained from 4,4′-isopropylidenediphenol (Bisphenol A) and thiophosgene under phase transfer conditions, using quaternary ammonium phosphonium salts crown ethers as catalysts. The polymer identified by IR 1H NMR spectroscopy, the molecular weights were estimated inherent viscosity measurements. influence of catalysts, solvent addition studied in order to find best conditions. It found that tetrabutylammonium bromide, dichloromethane at once gives highest yields viscosities. Other catalysts solvents less efficient or unefficient for this reaction.