PATENTS

      1486.  ------.  [I. G. FARBENINDUSTRIE, A. G.]  [Production of Dispersing Agents.]  German Patent Appl. I 73,176. OZ 13,666, filed Sept. 15, 1942 (Cl. IV d-12 o).  FIAT Reel 168. frames 7,368-7,370; PB 68,534.

            Mixture of high-molecular hydrocarbons melting at 98º obtained from the hydrogenation of CO is oxidized with addition of 0.15% K permangnate in aqueous solution by a stream of air of 20 m.3 per hr. at 130º to an acid number of 22.  To 4,000 kg. of the melted product are added 50 kg. of a fatty acid mixture b. 240º-300º at 1 mm. pressure obtained from the oxidation of paraffin.  The acid number rises to 24.  The saponified product is quite hard and is a good dispersion agent.  Addition to German Patent Appl. I 67,977 (abs. 1372).