Slow release of fragrant compounds in perfumery using a keto esters
US6218355A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 1999 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/57
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention describes a fragrance delivery system which releases fragrant aldehydes or ketones and/or fragrant compounds containing an olefin function upon exposure to light. This system comprises .alpha.-keto esters of formula ##STR1## in which R'.sup.* and R".sup.* have the meaning as defined in the application and which are generally, in case of R'.sup.*, an alkyl group carrying an abstractable hydrogen in .gamma.-position relative to the .alpha.-keto function and carrying a moiety from which is derived a fragrant compound containing an olefin function, and, in case of R".sup.*, the organic part of a primary or secondary alcohol from R".sup.* OH which is derived a fragrant aldehyde or ketone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.