Patent ID: 9347016
Filing Date: 2016-05-24
CPC Classification: C10M,C10N

Claim Text:
1. A micropitting corrosion resistant industrial gear lubricant composition, comprising: (A) a highly refined mineral oil, or synthetic oil, and combinations thereof in an amount of 88.00-98.79 wt. % based on the composition; (B) a micropitting corrosion resistant additive in an amount of 0.2-5.0 wt. % based on the composition-comprising a m-diphosphonate selected from the group consisting of diisopropyl m-diphosphonate, isopropyl isoctyl m-diphosphonate, diisohexyl m-diphosphonate, and diisooctyl m-diphosphonate; (C) an anti-wear additive in an amount of 0.5-3.0 wt. % based on the composition selected from the group consisting of trialkyl phosphate, triaryl phosphate, trialkyl thiophosphate, triaryl thiophosphate, and mixtures thereof; (D) a metal passivation additive in an amount of 0.01-1.0 wt. % based on the composition selected from the group consisting of benzotriazole dialkylamine formaldehyde condensate, thiadiazole alkylthiol hydrogen peroxide condensate, and mixtures thereof; (E) an antioxidant additive in an amount of 0.5-3.0 wt. % based on the composition selected from the group consisting of 2,6-di-tert-butyl-4-methylphenol, a condensate of N-phenyl-α-naphthylamine, dialkyldiphenylamine, dialkyl dithiocarbamate, and mixtures thereof.