Process for preparing tetraphenoic compounds
US5146006A · kind A · utility
9Cited by
10References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 28, 1991 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Jun 28, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/84
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for preparing a tetrakisphenol by the reaction of a dialdehyde with a phenolic compound in the presence of a cationic exchange resin catalyst, and then subjecting a solution of the condensation product to conditions suitable for crystallization of the polyphenolic product relatively high in the tetrakisphenol species.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.