Preparation of glyoxal

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

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C07C 4529

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042422825

ABSTRACT:
Glyoxal is prepared by oxidizing glycol in the presence of a silver catalyst of a defined particle size and under defined conditions of temperature, residence time and inert gas concentration.
The glyoxal obtainable by the process of the invention may be used in wrinkle-resist finishing, as an assistant for increasing the tensile strength and resilience of fibrous materials, a tanning agent, a hardener in the photographic industry, and a starting material for the manufacture of synthetic resins, textile auxiliaries, for example to prevent shrinkage after washing, paper additives, for example for increasing the wet strength, and plastics.

REFERENCES:
patent: 2051266 (1936-08-01), McAllister et al.
patent: 2339282 (1944-01-01), McNamee et al.
patent: 3948997 (1976-04-01), Howe et al.
patent: 4010208 (1977-03-01), Aicher et al.
patent: 4080383 (1978-03-01), Deim et al.
Ullmanns Encyklopadae der techn. chemie, vol. 8, pp. 250-252.
Proceed. Acad. Sci. USSR Chem. Ser., (1964), pp. 641-643.

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