Composition of wearing-resistant hydraulic oil and lubricating oil

Application Number: 00109278
Application Date: 2000.06.20
Publication Number: 1285394
Publication Date: 2001.02.28
Priority Information: 1997/6/2 US 08/866963
International: C10M137/04
Applicant(s) Name: R.T. Vanderbilt Co., Inc.
Inventor(s) Name: Thomas J. Karoer;Steven G. Tonnali;Brain W. Stoker
Patent Agency Code: 11219
Patent Agent: wang weiyu
Abstract Disclosed are synergistic antioxidant compositions composed of (1) amine salts of alkyl phosphates and (2) ethylenediamine, ammonium or metal salts of alkylarylsulfonates. The antioxidant compositions are useful for formulating zinc-free antiwear hydraulic fluids and gear lubricating oils in conjunction with thiophosphate type antiwear agents, corrosion and rust inhibitors.