Metal free lubricants

Details Metal free lubricants Metal free lubricants

C - Chemistry, Metallurgy

10

M

253/117, 31/64

C10M 129/72 (2006.01) C10M 101/04 (2006.01) C10M 137/12 (2006.01) C10M 141/08 (2006.01) C10M 141/10 (2006.01) C10M 163/00 (2006.01) C23F 11/10 (2006.01)

Patent

CA 2032940

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.

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