The lubricant is prepared by mixing together metal oxides and alkali metal ortho or condensed phosphates. Typical compositons comprise in mole 34-49 p2O5, 34-49 alkali metal oxides, 0 to 25 Fe2O and 0-25 Al2O3 as long as Fe2O3Al2O3 is smaller than 25. Typical lubricant comprises 78.71 wt KPO3 and 21.29 wt. Fe2O3, 41.67 mole P2o5, 41.67 moel K2O and 16.66 mole FeO3. Author
Edited trans. of Patent (USSR) 262 301 2p 1970, by Charles T. Ostertag, Jr.