| abstract |
This invention relates to a liquid composition comprising (A) a major amount of a fluorine-containing hydrocarbon, and (B) a minor amount of a soluble organic lubricant free of acetylenic and aromatic unsaturation and comprising a cyclic compound characterized by structure (I), wherein R is H, a hydrocarbyl group, or -R?2COOR?1, X is O or NR?3, Y is CHR?4, C=O, C=NR?5, R?1 is H or a lower hydrocarbyl group, R?2 is an alkylene group, R?3 is H, a hydrocarbyl group, an alkylene group joined to R?5 when Y is C=N-R?5 to form a cyclic moiety, -R?6OR?7, or -R?8NR?9R?10, R?4 is H or a hydrocarbyl group, R?5 is H or an alkylene group joined with R?3 when X is NR?3 to form a cyclic moiety, R?6 is an alkylene group, R?7 is H or a hydrocarbyl group, R?8 is an alkylene group, and R?9 and R?10 are each independently H or hydrocarbyl groups, or R?9 and R?10 are hydrocarbylene groups joined together to form a heterocyclic moiety, provided that when Y is CH2? and X is NR?3, R?3 is not a hydrocarbyl group. |