1847. KEUNECKE, E., KüRZINGER, A., AND WEISS, B. (I. G. Farbenindustrie A. G.). [Separating Mixtures of Straight-Chain and Branched-Chain High Molecular Fatty Acids.] German Patent 744,136, Jan. 20, 1944; appl. I 67,281, OZ 12,216, filed June 28, 1940 (

PATENTS

1847. KEUNECKE, E., KÜRZINGER, A., AND WEISS, B. (I. G. Farbenindustrie A. G.). [Separating Mixtures of Straight-Chain and Branched-Chain High Molecular Fatty Acids.] German Patent 744,136, Jan. 20, 1944; appl. I 67,281, OZ 12,216, filed June 28, 1940 (Cl. 12 o-11). FIAT Reel E 29, frames 763-764; PB 70,432; FIAT Reel 163, frames 2,044-2,048; PB 25,607; Meyer Transl. PC-S-IV, Wax Oxidation, vol. 3, chap. 33, 1949, p. 5.

Gives process for separating mixtures of straight- and branched-chain, high -molecular fatty acids obtained by the catalytic conversion of olefins with CO and H₂ and oxidation of the resulting aldehydes and containing no great amounts of unsaponifiable or unsaponified substances or compounds insoluble in benzine. Fractions of such mixtures, boiling within a narrow temperature range, are treated in the cold with organic solvents, such as methyl formate. The branched-chain fatty acids dissolve, but the straight-chain fatty acids remain unchanged.