Lubricants having overbased metal salts and organic phosphites

Details Lubricants having overbased metal salts and organic phosphites Lubricants having overbased metal salts and organic phosphites

C - Chemistry, Metallurgy

10

M

C10M 137/02 (2006.01) C10M 141/10 (2006.01) C10M 163/00 (2006.01)

Patent

CA 2348855

This invention relates to a lubricant comprising (A) a basic metal salt of an acidic organic compound and (B) a hydrocarbyl phosphite, provided that the lubricant is free of metal deactivators. In one aspect the lubricant is a manual transmission fluid. The lubricants provide good friction, good antiwear and thermal stability properties.

L'invention concerne un lubrifiant contenant, d'une part, un sel métallique basique d'un composé organique acide et, d'autre part, un phosphite d'hydrocarbure, étant entendu que le lubrifiant soit exempt de désactiveurs de métaux. Dans un mode de réalisation, le lubrifiant est un liquide pour transmissions manuelles. Ces lubrifiants offrent de bonnes propriétés de friction, de résistance à l'usure et de stabilité thermique.

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