Biphenol process
US4847434A · kind A · utility
1Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1988 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Jan 21, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/11
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Phenols, e.g. 2,6-di-tert-butylphenol, are coupled to form biphenols, e.g. 4,4'-bis(2,6-di-tert-butylphenol), by reaction with aqueous hydrogen peroxide under basic conditions in the presence of a phase transfer agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.