Lubricating grease compositions

C - Chemistry – Metallurgy – 10 – M

Patent

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Details

C10M 169/02 (2006.01) C10M 105/50 (2006.01) C10M 115/08 (2006.01)

Patent

CA 2257368

This invention concerns lubricating grease compositions comprising of a mixture of (a) a hydrocarbon-based oil, (b) a perfluoro-polyalkyl ether oil of the general formula A'-(O-CF2)v-(O-C2F4)w-(O-C3F6)x-(O-C4F8)y-(O-CF2CF(CF3))z-O-A'' an which A' is -CF3, -C2F5, -C3F7, -CF2T where T is H or Cl, A''can be A' or -CF3, C2F5, -C3F7, -CF2T, where T is H or Cl1 and w, w, x, y and x are whole numbers >=0, (c) a dicarbamide as a thickening agent, (d) typical additives and (e) organic and inorganic solid lubricants. Moreover, a process for the production of these lubricating grease compositions is provided.

La présente invention concerne des compositions de graisses de lubrification contenant: (a) une huile à base d'hydrocarbure; (b) une huile de polyalkyléther perfluorée de formule générale: A'-(O-CF2)v-(O-C2F4)w-(O-C3F6)x-(O-C4F8)y-(O-CF2CF(CF3))z-O-A'', dans laquelle A' représente -CF3, -C2F5, -C3F7, -CF2T, où T représente H ou Cl; A'' est identique à A' ou différent de A' et représente -CF3, -C2F5, -C3F7, -CF2T, où T représente H ou Cl; et v, w, x, y, et z sont des nombres entiers >/= 0; (c) une diurée en tant qu'agent épaississant; (d) les additifs usuels, et (e) des lubrifiants solides organiques et inorganiques. L'invention concerne en outre un procédé de préparation de ces compositions de graisses de lubrification.

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