Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1991-08-16
1992-08-11
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568722, 568723, 568729, C07C 3916, C07C 39367
Patent
active
051381036
ABSTRACT:
A process for producing tetrabromobisphenol A of high quality, which comprises brominating bisphenol A with bromine, wherein a solvent mixture comprising a hydrohalogenic acid and an alcohol, is used as the solvent for reaction. Also disclosed is a process for producing tetrabromobisphenol A of high quality, which comprises brominating bisphenol A with bromine in an alcohol, wherein the reaction temperature is set at a level of from -10.degree. to +20.degree. C., and water is added in an aging step.
REFERENCES:
patent: 4701568 (1987-10-01), McKinnie et al.
patent: 5068463 (1991-11-01), Walter
Eguchi Hisao
Kubo Masashige
Kunimoto Koji
Nagasaki Noritaka
Lone Werren B.
Tosoh Corporation
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