COMPOSIZIONI LUBRIFICANTI AVENTI MIGLIORATE PROPRIETA'DI FILMATURA

Lubricating compositions having improved film-forming properties are disclosed which comprise:A) a perfluoropolyether having a viscosity of from 150 to 2000 cSt (at 20°C);B) a perfluoropolyether having a viscosity ≤ 50 cSt (at 20°C);the amount of compound B) being in the range of from 2 to 20% by we...

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Hauptverfasser: SCARATI MARIO ALBERTO, CAPORICCIO GERARDO
Format: Patent
Sprache:ita
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Zusammenfassung:Lubricating compositions having improved film-forming properties are disclosed which comprise:A) a perfluoropolyether having a viscosity of from 150 to 2000 cSt (at 20°C);B) a perfluoropolyether having a viscosity ≤ 50 cSt (at 20°C);the amount of compound B) being in the range of from 2 to 20% by weight with respect to the sum of A) and B).