Phenol recovery from bisphenol-A waste streams
US4351966A · kind A · utility
11Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 8, 1971 |
| Grant date | Sep 28, 1982 |
| Priority date | — |
| Expiry date | Jun 8, 1991 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Bisphenol-A waste stream derived from the reaction of phenol and acetone in the presence of an acidic condensing agent can be treated with a molecular sieve to obtain good yields of phenol present in the effluent stream either in isolated form or as part of the compounds present in the waste stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.