Acidic catalyst for condensation reactions
US5233096A · kind A · utility
27Cited by
8References
7Claims
0Family size
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Key dates
| Filing date | Jul 13, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Jul 13, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2800/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Strongly acidic cation-exchange resin beads made by functionalizing jetted, suspension-polymerized, crosslinked, styrenic copolymer beads with sulfonic acid groups produce an unexpectedly high level of conversion when catalyzing condensation reactions, particularly the condensation of phenol with aldehydes or ketones to form bisphenols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.