Process for a decarbromodiphenylethane predominate product having enhanced whiteness
US5324874A · kind A · utility
26Cited by
17References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1992 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Aug 17, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to an improvement in a process for preparing a product predominant in decabromodiphenylethane. In the improved process the diphenylethane is reacted with bromine in the presence of bromination catalyst in a reaction vessel by feeding diphenylethane to the reaction vessel below the liquid level of bromine in the reaction vessel. The improvement comprises contacting diphenylethane, bromine, and catalyst at a rate sufficient to obtain a diphenylethane predominant product having enhanced color and particle size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.