Methods for preparing 1,1,1-tris(4-hydroxyphenyl)alkanes
US7304189B2 · kind B2 · utility
1Cited by
6References
19Claims
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Key dates
| Filing date | Jan 31, 2005 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Nov 6, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for preparing 1,1,1,-tris(4-hydroxyphenyl)alkanes generally comprises reacting a mixture of an aromatic hydroxy compound and a ketone in the presence of at least one ion exchange resin catalyst and optionally a co-catalyst to produce the 1,1,1-tris(4-hydroxyphenyl)alkanes of formula:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.