PATENTS

      1569.  ------.  [I. G. FARBENINDUSTRIE, A. G.]  [Softening Agents for Polyvinyl Compounds.]  Danish Patent 60,971, May 31, 1943: appl. filed Jan. 3, 1942.  Chem. Zentralb., 1944. I. p. 605.

            See Norwegian Patent 66,363 (abs. 1570).