3569. STRIK, K. T. (Standard oil Development Co.). Ketenes. United States Patent 2,086,582, July 13, 1937; appl. filed Aug. 29, 1930, Serial No. 478,618; 8 claims (Cl 260-123). Chem. Abs., vol. 31, 1937, p. 6260.

PATENT

3569. STRIK, K. T. (Standard oil Development Co.). Ketenes. United States Patent 2,086,582, July 13, 1937; appl. filed Aug. 29, 1930, Serial No. 478,618; 8 claims (Cl 260-123). Chem. Abs., vol. 31, 1937, p. 6260.

Alcohol or adehyde suitable for ketene production, for example, PrOH for the production of acetic ketene by dehydrogenation and heating is subjected to progressively higher temperatures in stages, without removing intermediate reaction products between stages. By this mode of operation good yields are obtained.