| 摘要 |
The present invention relates to new lubricating greases,the oily component of which is a perfluoropolyether or fluoropolyether derivattve of formula R-O-Q-CFX-(Y)n-Z, having a number average molecular weight ranging from 1,500 to 10,000, where R is a perfluoroalkyl radical RF or it is Z-(Y)n-CFX; Q is a perfluoroalkylpolyethereal or fluoroalkylpolyethereal chain; X is F or CF3; Y is a linking divalent radical; n is zero or 1; Z is a radical selected from -CH2OH, -CH2OR1, -COOR2, -COR3R4 etc. ... or from particular radicals containing heteroatoms or particular aromatic radicals. |
