| abstract |
Rf est un radical perfluoré, a = 0 à 10, b = 0 ou 1 (si a = 0 et c = 1), c = 1 à 4 (2 si a ≠ 0), m = 0 ou 1, n = 0 ou 1, X est un radical aryle, Y est un groupement hydroxy-2 phényl-1 éthyle, R 1 et R', représentent chacun un atome d'hydrogène ou un radical alkyle, cycloalkyle ou aryle, R 2 et R' 2 représentent chacun un atome d'hydrogène ou un reste acyle, l'un au moins des symboles R 1 et R 2 étant autre que H ou CH 3 si la somme a + m + n = Q. To improve the anti-wear properties of lubricants, at least one compound of formula: in which : Rf is a perfluorinated radical, a = 0 to 10, b = 0 or 1 (if a = 0 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, R 1 and R ′ each represent a hydrogen atom or an alkyl, cycloalkyl or aryl radical, R 2 and R ' 2 each represent a hydrogen atom or an acyl residue, at least one of the symbols R 1 and R 2 being other than H or CH 3 if the sum a + m + n = Q. |