New lubricant greases.

摘要

The present invention relates to lubricant greases, the oily component of which is a perfluoropolyether or fluoropolyether derivative of formula R-O-Q-CFX-(Y)n-Z, having a number average molecular weight ranging from 1500 to 10000, where R is a perfluoroalkyl radical RF or it is Z-(Y)n-CFX; Q is a perfluoroalkylpolyether or fluoroalkylpolyether chain; X is F or CF3; Y is a linking divalent radical; n is zero or 1; Z is a radical selected from -CH2OH, -CH2OR<1>, -COOR<2>, CONR<3>R<4> etc. or from particular radicals containing heteroatoms or particular aromatic radicals.