Return to Abstracts of Patents Return to Abstracts of Patents 250-499 Patent Abstracts484. ------. [DEUTSCHE HYDRIERWERKE A. G.] [Softening and Solvent Agents for High-Polymer Substances.] French Patent 884,257, Aug. 9, 1943; appl. filed July 16, 1942. Chem. Zentralb., 1944, I. p. 605. Agents are produced by the oxidation of paraffin gatch obtained by the hydrogenation of CO by the Fischer-Tropsch method. |