PATENT

3774. ----- [ULLRICH, A.].  [Waxes.]  German Patent Appl. Sch 128,228, no date (Cl. IV d-12 o).  Auszüge deut. Patent-Anmeldungen, vol. 6, p. 355.

Wax exchange material is produced by oxidizing hard paraffin of the Fischer-Tropsch process under pressure, whereby the O₂ partial pressure decreases with increasing degree of oxidation, the total pressure however being kept constant by the addition of inert gases.