Pure Appl. Chem., 2007, Vol. 79, No. 11, pp. 1879-1884
http://dx.doi.org/10.1351/pac200779111879
Organic solvent-free synthesis of phosphorus-containing polymers
Abstract:
Direct, efficient, organic solvent- and catalyst-free synthesis of a series of polyphosphates was accomplished. The reaction involved a gas-liquid interfacial polycondensation between arylphosphoric dichlorides and bisphenol A. The polyphosphates were characterized by IR, 1H NMR, 31P NMR, inherent viscosity, thermal analysis, and molar mass. Yields in the range 70-90 % and inherent viscosities in the range 0.30-0.40 dl/g were obtained. The thermal stability of the polyphosphates was investigated by using thermogravimetry.
Keywords
arylphosphoric dichlorides; bisphenol A; gas-liquid interfacial polycondensation; polyphosphates; solvent-free.