PHOSPHA-S-TRIAZINES. X. THIOPHENYL-SUBSTITUTED PHOSPHA-S-TRIAZINES

Article abstract of DOI:10.1016/S0022-1139(00)85105-2

A series of thiophenyl-substituted mono- and diphospha-s-triazines was prepared.These materials exhibited physical characteristics similar to those of the corresponding phenyl analogues, but the mass spectral breckdown patterns were dominated by the loss of the thiophenyl group and differed significantly from that of the other phospha-s-triazines investigated to date.The thiophenyl-phospha-s-triazines exhibited anticorrosive and antioxidative action when used as additives in perfluoroalkylether fluids.At elevated temperatures, 316 deg C, these materials were less effective than the phenyl analogues.The monophospha-members of the series were thermally and oxidatively less stable the corresponding diphospha-s-triazines: 67 versus 96percent starting material recovery after exposure to air at 235 deg C for 24 hr.Both the mono- and diphospha-s-triazines were completely degraded in 24 hr at 316 deg C in nitrogen.