Process for producing tetrabromobisphenol A
US5138103A · kind A · utility
18Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Aug 16, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/62
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.