Manufacture of formaldehyde

Details Manufacture of formaldehyde Manufacture of formaldehyde

1974-07-08

1980-06-24

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

422197, C07C 4516

Patent

active

042094666

ABSTRACT:
Manufacture of formaldehyde by oxidative dehydrogenation of methanol in the presence of a silver catalyst using methanol obtained from a condensate derived from the evaporation of aqueous reaction mixtures in the synthesis of urea resins and then treated with caustic soda solution under specific conditions of temperature, pressure, residence time and initial formaldehyde concentration. The formaldehyde obtained is a disinfectant, tanning agent, reducing agent and starting material for the manufacture of synthetic resins, adhesives and plastics.

REFERENCES:
patent: 2545889 (1951-03-01), MacLean
patent: 2614072 (1952-10-01), Carlson et al.
patent: 3431082 (1969-03-01), Sellin
Walker, Formaldehyde, Reinhold Publishing Corp., New York, pp. 16-25 and 215 (1967).
Ullmann's Encyklopaedie der Technischen Chemie, vol. 3, pp. 475-486 and vol. 9, pp. 598-599.
Fry, H. S. et al., Rec. Trav. Chim., 50, pp. 1060-1065 (1931).
Loew, O., Ber., vol. 20, 144 (1887).

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