Promoter catalyst system with solvent purification
US9056821B2 · kind B2 · utility
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35Claims
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Key dates
| Filing date | Apr 10, 2014 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Apr 10, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C37/84
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methods for performing a condensation reaction are disclosed. Specifically, various methods for the production of highly-pure bisphenol-A are disclosed in which an attached promoter ion exchange resin catalyst system is combined with a solvent crystallization step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.