Antioxidant chroman compounds
US4026907A · kind A · utility
18Cited by
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2Claims
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Assignee
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Key dates
| Filing date | Dec 4, 1975 |
| Grant date | May 31, 1977 |
| Priority date | — |
| Expiry date | Dec 4, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11B5/0035
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The (6-hydroxy-chroman-2-yl) acetic or carboxylic acid derivatives useful as antioxidants and a method for preparing these derivatives from hydroquinones and intermediates in this synthesis as well as the use of these derivatives as intermediates in the preparation of optically active alpha-tocopherol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.