PATENTS

3074.----- [RUHRCHEMIE, A. G.]  [Process for Producing Miscible Emulsions.]  German Patent Appl. --, R 608, Apr. 8, 1942.  TOM Reel 36, bag 3,454, Item 36, 8 pp.; Meyer Transl. PC-S-II, Fischer-Tropsch, vol. 2, ch. 83, 1948, p. 20.  Meyer Transl. PC-S-IV, Was Oxidation, vol. 2, ch. 24, 1948, p. 20.

In producing miscible and stable emulsions with the outer phase H₂O and/or oil, an emulsifier is used made of the paraffins produced in the hydrogenation of CO and oxidized with O-containing agents, particularly with nitrous gases in presence of H₂SO₄ or nitrosylsulfuric acid or with dichromates and H₂SO₄ with final complete or partial saponification.  The oxidized product, of which the emulsifier is made, is neutralized to 25-80% by treatment with virtually anhydrous, strongly alkaline agents such as anhydrous alkali carbonates, dry NH₃ gas or organic amines, particularly triethanolamine, at increased temperature but < 130° preferably not over 100°.  The emulsifier, or the paraffin oxidation products used for its production. is treated with highly concentrated alkaline solutions or organic amines in such an amount that the degree of saponification is 100% or over and the temperature so high, preferably 100°-120°, that the major part of the H₂O originally present is evaporated during the saponification operation.  To obtain from this emulsifier an emulsion containing mainly oil or paraffin as the inner phase, solid or semisolid hydrocarbons or oxygenated compounds are used, while for an emulsion with mainly H₂O as the internal phase, large amounts of liquid compounds, such as mineral oils, heavy benzine, and liquid fats, are used in addition to the emulsifier.  Gives several examples of preparation and uses.