METHOD OF CONTINUOUSLY AND INDIRECTLY DIAZOTATING AROMATIC AMINE

Title:

METHOD OF CONTINUOUSLY AND INDIRECTLY DIAZOTATING AROMATIC AMINE

Document Type and Number:

Japanese Patent JPS5448724

Kind Code:

A

Abstract:

Fluctuations in concentration of the starting materials during continuous diazotization are taken into account by passing a component stream from the receiver to the diazotization vessel through an analyser where, for a short residence time, the nitrite content is determined by an electrochemical measuring technique. A required nitrite excess is adjusted in the receiver on the basis of this measurement. By virtue of the pH-value, however, a diazotization reaction still does not take place in the receiver.

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Inventors:

KURUTO BURAIKU
GEORUKU DEEMERU
NORUBERUTO HAMU

Application Number:

JP11241678A

Publication Date:

April 17, 1979

Filing Date:

September 14, 1978

Export Citation:

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Assignee:

BAYER AG

International Classes:

C07C245/20; C07C67/00; C07C241/00; (IPC1-7): C07C113/00

Previous Patent: JPS5448723

Next Patent: JPS5448725