Degussa Aktiengesellschaft

Deutsche Gold- Und Silber-scheideanstalt Vormals Roessler

Eberhard Walter

Peter K Kleinschmit

Carl Voigt

Gunter Theis

Helmut Mechler

Brigitte Meiners

The known hydrocyanic acid-methane-ammonia (BMA) process for the production of hydrogen cyanide can now be carried out with liquified gases namely through the presence of additional hydrogen at the beginning of the reaction. The atomic ratio of carbon to nitrogen and hydrogen is from 1:1:7.1 to 1:1.33:13. As additional hydrogen there is the portion of hydrogen present coming out of the reaction 'hydrocarbon+NH.sub.3 '. Otherwise the reaction conditions are the same as in the known BMA process.

Process for the production of hydrogen cyanide

4,4'-isopropylidene-bis(2,6-dibromophenol) is produced by reacting 4,4'-isopropylidene diphenol with hydrogen bromide or a mixture of hydrogen bromide with up to an equimolar amount of free bromine in admixture with hydrogen peroxide and in the presence of water and an inert organic liquid.

Process for the production of 4,4-isopropylidene-bis'(2,6-dibromophenol)

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Hanau, Germany

Eberhard Walter