435. COPE, J. Q., AND SCOTT, J. W., Jr. (California Research Corp.). Preparation of Alkylated Aromatic Hydrocarbons and Sulfonation Thereof. United States Patent 2,531,324, Nov. 21, 1950: appl. filed Oct. 18, 1947, Serial No. 780,758; 6 claims (Cl. 260-

Patent Abstracts

435. COPE, J. Q., AND SCOTT, J. W., Jr. (California Research Corp.). Preparation of Alkylated Aromatic Hydrocarbons and Sulfonation Thereof. United States Patent 2,531,324, Nov. 21, 1950: appl. filed Oct. 18, 1947, Serial No. 780,758; 6 claims (Cl. 260-450).

Alkyl aryl sulfonates useful as deterants or wetting or emulsifying agents are produced from olefinic materials from the Fischer-Tropsch synthesis. The fraction boiling 300º-600º F., is passed through a silica gel column at a temperature below cracking. The fraction of the percolate that has flowed from the adsorbent mass, when the bromine number of the effluent percolate is at its maximum value, is separated. A mononuclear aromatic hydrocarbon is alkylated with at least a portion of the segregated fraction. 6 literature refs. and 7 United States patents cited.