초록 ▼

In order to improve the wear resistance properties of lubricants, at least one compound of the following formula is incorporated therein: [Figure] (I) Rf is a perfluorinated radical, a=0 to 10, b=0 or 1 (if a=o and c=1), c=1 to 4 (2 if a≠0), m=0 or 1, n=0 or 1, X is an aryl radical, Y is a 2-hydroxy

In order to improve the wear resistance properties of lubricants, at least one compound of the following formula is incorporated therein: [Figure] (I) Rf is a perfluorinated radical, a=0 to 10, b=0 or 1 (if a=o and c=1), c=1 to 4 (2 if a≠0), m=0 or 1, n=0 or 1, X is an aryl radical, Y is a 2-hydroxy-1-phenylethyl group, R1 and R′1 each represent a hydrogen atom or an alkyl, cycloalkyl or aryl radical, R2 and R′2 each represent a hydrogen atom or an acyl residue, at least one of the symbols R1 and R2 being other than H or CH3 if the sum a+m+n=0.

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Lubricating oils comprising from 0.01 to 0.5% by weight of at least one polyfluorinated compound of the general formula: [Figure] (I) in which: Rf denotes a perfluorinated radical, a is an integer ranging from 0 to 10, b is equal to 0 or 1, but can be equal to 1 only if simultaneously, a is equal t

Lubricating oils comprising from 0.01 to 0.5% by weight of at least one polyfluorinated compound of the general formula: [Figure] (I) in which: Rf denotes a perfluorinated radical, a is an integer ranging from 0 to 10, b is equal to 0 or 1, but can be equal to 1 only if simultaneously, a is equal to 0 and c is equal to 2, c is an integer ranging from 1 to 4, but is equal to 2 when a is other than 0, m and n are equal to 0 or 1, X represents an optionally substituted aryl radical, Y represents the 2-hydroxy-1-phenylethyl group, R1 and R′1, which may be identical or different, each represent a hydrogen atom, an alkyl radical containing from 1 to 20 carbon atoms, a cycloalkyl radical; containing 5 or 6 carbon atoms, or an optionally substituted aryl radical, R2 and R′2, which may be identical or different, each represent a hydrogen atom or the acyl residue of an aliphatic alicyclic or aromatic carboxylic acid, at least one of the symbols R1 and R2 being other than hydrogen or a methyl radical if the sum of a+m+n is zero.