PATENTS

3125.----- [RUHRCHEMIE, A. G.]  [Process for Producing Condensation Products.]  German Patent Appl. --, R 693, filed Sept. 15, 1943.  FIAT reel K-30, frames 7,878-7,881; PB 73,587.

Condensation products are produced by reacting formaldehyde and urea in the presence of the conversion products of alphatic hydrocarbons with concentrated HNO3.  Example:  A mixture of 36 gm. paraformaldehyde, 20 gm. urea, 5 gm, EOH, 35 cc. H₂O and 35 cc. of nitrocompounds, obtained by the reaction of concentrated HNO₃ with the C₆ fraction of the gasoline arising from the hydrogenation of CO, was intensively stirred for 48 hr. at 60°.  (German Patent Appl. R 114,103, (abs. 3127) and R 114,246 are cited in connection therewith.)  After cooling the unreacted nitrocompounds were separated and the semisolid condensation product dried.  There results a solid, somewhat brittle, dark mass melting > 220°.  It is insoluble in cold H₂O, alcohol, acetone, and the usual organic solvents and slightly soluble in boiling H₂O.