| 摘要 |
PURPOSE:To obtain the title composition useful as grease, etc. free from decomposition even in the presence of metal, having excellent heat stability, by simultaneously blending a perfluoropolyether with an arylamide derivative of a perfluoropolyether and a phosphite compound. CONSTITUTION:A perfluoropolyether shown by formula I (Rf is perfluoromethyl or perfluoroethyl; CF2CF2O and CF2O are randomly bonded; m+n are 3-200, m:n=10:90-90:10) is blended with a compound shown by formula II [A is 1-2C perfluoroalkyl or -CF2CON(F)A; R is H or alkyl; Ar is higher alkyl-substituted or aralkyl-substituted aryl) and a compound shown by formula III (R' is alkyl or alkylaryl). The blending ratio is about 1-5wt.% compound shown by formula II and compound shown by formula III based on compound shown by formula I and the weight ratio of the compound shown by formula II and the compound shown by formula III is 10:1-1:3. |
