| abstract |
WHEREIN RF IS AS DEFINED ABOVE R''F IS A PERFLUOROALKYL GROUP OF 1-2 CARBON ATOMS, AND N IS AN INTEGER, SAID OILS ALSO HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 3,000, A POUR POINT NOT IN EXCESS OF 10*C., AND A VOLATILITY OF LESS THAN 50% AT 204.4*C. R1(C3F6O)NR''1 R1O(C3F6O)NCF(CF3)H, OR R1O(CF(CF3)CF2O)NCF(CF3)CF(CF3) (OCF2CF(CF3))NOR1 WHEREIN R1 IS A PERFLUOROALKYL GROUP OF 1-6 CARBON ATOMS, M IS AN INTEGER IN THE RANGE 3-50, AND X IS -F OR -CF3, USEFUL AS HIGH TEMPERATURE LUBRICANTS AND HYDRAULIC FLUIDS, AND AS CORROSION AND DEGRADATION INHIBITORS FOR POLY(HEXAFLUOROPROPYLENE OXIDE) OILS HAVING THE FORMULA (C6H5)2P(:O)OCH2CFX(C3F6O)MCFXCH2OP (:O)(C6H5)2 PERFLUOROPOLYOXOALKANE SUBSTITUTED PHOSPHINATES HAVING THE FORMULA R1O(C3F6O)MCFXCH2OP(:O)(C6H5)2 OR |