Method for purifying (-)-N-isopulegol and citrus perfume composition containing (-)-N-isopulegol obtained by the method
US5773410A · kind A · utility
89Cited by
2References
2Claims
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Key dates
| Filing date | Jul 24, 1995 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Jul 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for purifying isopulegol is disclosed, comprising deep cooling isopulegol mainly composed of (-)-n-isopulegol in a solvent for deep cooling mainly comprising acetone to obtain (-)-n-isopulegol having a chemical purity of not less than 99.7% by weight and an optical purity of not less than 99.7%e.e. The thus purified (-)-n-isopulegol is odorless and gives a feeling of freshness, crispness and coolness to a citrus perfume composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.