Method for preparing bisphenol A
US6197916A · kind A · utility
8Cited by
8References
8Claims
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Key dates
| Filing date | Aug 30, 1999 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Aug 30, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/307
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for preparing bisphenol A is disclosed, with a selectivity for the p,p'-isomer of greater than about 97%. The method involves reacting phenol with p-isopropenylphenol or 2-(4-hydroxyphenyl)-2-propanol in the presence of a catalyst, at a reaction temperature of no greater than about 65.degree. C. The bisphenol A product is preferably purified by a technique which omits the use of adduct crystallization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.