Solvay Specialty Polymers Italy S.p.a.

Solvay Solexis S.p.a.

Fabio Riganti

Manfred Jungk

Giovanni Boccaletti

Valerio Carsetti

Vincent Pierre Meunier

Fabio Brunetta

Andrea Brunetta

A method of forming a lubricating film on a surface, comprising applying to a surface a multiphasic composition comprising at least one (per)fluoropolyether (PFPE) lubricant, water and from 0.1 to 3% by weight of water of at least one thickening agent, said multiphasic composition having a viscosity, when measured at 21&#xb0; C. at a shear rate of 1 secof at least 10 Pa&#xd7;sec so as to form a layer, and drying said layer to form a lubricating film. The Applicant has found that by the use of the multiphasic composition as above detailed it is advantageously possible to convey to surface to be lubricated the PFPE lubricant by using application techniques (doctor blade, metering rod, . . . ) as those suitable for solid-like greases, while the actual conveyed lubricant behaves in lubrication as an oil, avoiding the use of fluorinated solvents.

Method for forming a lubricating film

A method of lubricating a wind turbine gearbox comprising using a lubricating composition comprising at least one (i.e. one or a mixture of more than one) perfluoropolyether (PFPE) lubricant which comprises a perfluorooxyalkylene chain, said perfluorooxyalkylene chain comprising recurring units having at least one ether bond and at least one fluorocarbon moiety. A wind turbine gearbox comprising a lubricating system containing said lubricating composition.

Method for lubricating wind turbine gearbox

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Carnago, Italy

Fabio Riganti