Purification of bisphenol-A
US4294994A · kind A · utility
9Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1980 |
| Grant date | Oct 13, 1981 |
| Priority date | — |
| Expiry date | Apr 21, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/70
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Pure bisphenol-A can be obtained by subjecting the adduct of the latter and phenol to spray drying conditions and recovering the bisphenol-A from the released phenol. The use of an inert liquid carrier for the adduct, such as acetone, facilitates the desired separation and purification of the bisphenol-A.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.