Abstract: Fatty acid esters of which the fatty acid constituents are fatty acids containing a total of 12 to 22 carbon atoms and of which the alcohol constituents are saturated and/or mono- or polyolefinically unsaturated monoalcohols containing a total of 1 to 22 carbon atoms, with the additional proviso that the fatty acid constituents of the esters contain saturated and/or mono- or polyolefinically unsaturated fatty acids and have a branched structure, isostearic acid being excluded as the fatty acid constituent of the esters, are suitable as solvents for printing inks.

Abstract: The preparation of concentrated solutions of oxime metal extractants, such as aldoximes and ketoximes, or mixtures of aldoxime and ketoxime, and the use thereof in formulating or preparing extraction reagent compositions for use in an extractant organic phase in a process of extracting metals from aqueous solutions containing metal values; and in particular, to concentrates which are solutions of individual ketoxime or aldoxime or mixtures of water-insoluble hydroxy aldoximes and ketoximes, in varying ratios by weight of 1:100 aldoxime to ketoxime, or conversely, 100:1 ketoxime to aldoxime, in water-immiscible hydrocarbon solvents or equilibrium modifiers. The invention also provides for maintaining stability of concentrates determined by accelerating rate calorimetry to define the ranges of oxime concentration and volume whereby the concentrate will be a stable, flowable, pourable and pumpable concentrate which can be safely stored long term.