Method for making bisphenol
US5414151A · kind A · utility
28Cited by
12References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1994 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | May 2, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method is provided for making bisphenol by condensing a ketone and a phenol in the presence of a sulfonated aromatic organic polymeric ion-exchange catalyst having aminoorganomercaptan groups using a phenol having less than 1 ppm of hydroxyacetone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.