3883. WEARN, R. B. (Food Machinery & Chemical Corp.). Process For Production of Methane Aldehyde. United States Patent 2,501,200, Mar. 21, 1950; appl. filed Dec. 26, 1926, Serial No. 718,610; 4 claims (Cl. 260-598). Chem. Abs., vol. 44, 1950 p. 5911.

PATENT

3883. WEARN, R. B. (Food Machinery & Chemical Corp.). Process For Production of Methane Aldehyde. United States Patent 2,501,200, Mar. 21, 1950; appl. filed Dec. 26, 1926, Serial No. 718,610; 4 claims (Cl. 260-598). Chem. Abs., vol. 44, 1950 p. 5911.

Limonene or dipentene is reacted with H2 at 75°-150° C. and 200-2,000 p. s. i. with Co-kieselguhr catalyst until the side chain double bond is saturated. CO is introduced and the pressure raised to 1,000-4,000 p. s. i. until an aldehyde group is substituted on the 2 position. 1 foreign patent and 4 United States patents cited.