Process for preparing tetraphenolic compounds
US5012016A · kind A · utility
13Cited by
8References
18Claims
0Family size
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Inventor
Key dates
| Filing date | Mar 20, 1990 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Mar 20, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Tetraphenolic compounds such as the tetraphenol of ethane and the tetraphenol of xylene can be prepared in a heterogeneous reaction mixture using an acidic cationic exchange resin catalyst. A continuous process can be most effectively carried out in the presence of an alcohol cosolvent for the reaction mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.