Process for high purity tetrabromobisphenol-A
US5208389A · kind A · utility
17Cited by
24References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1992 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Apr 1, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/70
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The quality of a product predominant in tetrabromobisphenol-A is enhanced by contacting the product with a quality enhancing amount of treated water and 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 20 ppm of ionic impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.