| 摘要 |
Lubricant compositions adapted for use under extreme pressure, high temperature and high speed conditions comprising a major proportion of an oil or grease base material, having a dropping point above about 300 DEG F., and a minor proportion of an additive system containing as an essential component an inorganic phosphate salt, or mixture thereof, in solid form. Preferred salts are alkaline earth metal ortho- or pyrophosphates exemplified by dicalcium phosphate.
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