3811. -----.[VEREINIGTE OELFABRIKEN HUBBE & FARENHOLTZ .] [Process for the Production of Oxidation Products From Material Containing Paraffin.] German Patent Appl. V 40,421, PA 560,884; filed Sept. 7, 1943. FIAT Reel B-196, frames 783-790; PB 83,253.

Material to be oxidized is first treated at a temperature above its melting point in known manner with concentrated (85%-100%) H₂SO₄ or oleum. It is finally washed with dilute alkali (1-5% NaOH) at a temperature between the melting point of the paraffin and the boiling point of H₂O. The lye is washed out, and the material subjected to oxidation. Before or after the treatment with H₂SO₄, a treatment with bleaching earth or a selective solvent may take its place. The treatment with concentrated H₂SO₄ at a temperature 150° -200° is so arranged that a part of the cyclic-unsaturated and the pseudocyclic compounds and the like is coked. After a final treatment with bleaching earth and filtration, the material may be treated with dilute alkalies, preferably caustic soda. Paraffins which are brought by distillation to a boiling range of 320° -330° up to 450° , calculated at 760 mm. Hg column, are used in the process.