Process for high purity tetrabromobisphenol-A
US5107035A · kind A · utility
18Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1990 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Nov 15, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/86
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The quality of a product predominant in tetrabromobisphenol-A is enhanced by heat treating the product for a period of time and at a temperature which are sufficient to obtain a TBBPA predominant product having less than about 50 ppm of hydrohalide impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.