Abstract
1. The thickening effect of lithium soaps of synthetic fatty acids and the properties of greases based on them depend both on the structure and fractional composition of the acids, and also on the composition of the dispersion medium. 2. An extreme type of dependence of the thickening effect of Li soaps on molecular weight of synthetic fatty acids has been discovered, similar to that established for the Li soaps of individual acids. 3. Dearomatization of oils leads to a reduction in the thickening effect of Li soaps and to a shift in its optimum to soaps of higher molecular weight acids. For commercial oils having a naphthene-aromatic base, this optimum corresponds approximately to soaps of C12–C14 acids; and for naphthene-paraffinic or naphthenic oils, to soaps from C16–C18 acids.
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