1570. ------. [I. G. FARBENINDUSTRIE, A. G.] [Softening Agents for Polyvinyl Compounds.] Norwegian Patent 66,363, June 21, 1943: appl. filed Dec. 31, 1941. Chem. Zentralb., 1944, I. p. 605.

Esters are used that are obtained from the first-runnings of fatty acids with 5-14 C atoms in the molecule and at least a trivalent alcohol.