Process for recovering bisphenols
US5723689A · kind A · utility
13Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1996 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Jan 16, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/84
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for recovering substantially pure p,p-bisarylols from a mixture comprising the same by subjecting the mixture to vacuum distillation and melt crystallization in the absence of an adduct crystallization and the generation of a reaction recycle stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.