Lubricant compositions with metal-free antiwear or load-carrying

Details Lubricant compositions with metal-free antiwear or load-carrying Lubricant compositions with metal-free antiwear or load-carrying

1992-11-02

1993-10-19

McAvoy, Ellen M.

Compositions

Electrolytes for electrical devices

252 327R, 252 34, 252 515R, 252 515A, C10M13708, C10M13316

Patent

active

052542726

ABSTRACT:
Lubricant compositions especially useful as hydraulic fluids contain a metal-free anti-wear or load-carrying additive containing sulphur and/or phosphorus and an amino succinate ester as corrosion inhibitor. Such compositions are free from heavy metal and have improved environmental acceptability where heavy metals are to be avoided, e.g. in agriculture. The lubricant base stock may be a biodegradable natural oil.

REFERENCES:
patent: 4056531 (1977-11-01), Malec
patent: 4116877 (1978-09-01), Outten et al.
patent: 4462918 (1984-07-01), Matthews et al.
Smalheer & Smith, Lubricant Additives, 1967.

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