Organic compounds -- part of the class 532-570 series – Organic compounds – Carbonate esters
Reexamination Certificate
1998-06-23
2001-05-15
Killos, Paul J. (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbonate esters
C558S266000, C558S267000, C512S027000
Reexamination Certificate
active
06232487
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to carbonates for the delivery of aldehydes and/or ketones. These carbonates represent a new group of precursors for organoleptic compounds (such as fragrances, flavors and masking agents) and antimicrobial compounds.
DESCRIPTION OF THE RELATED ART
A principal strategy currently employed in imparting odors to consumer products is the admixing of the fragrance directly into the product. There are, however, several drawbacks to this strategy. The fragrance material can be too volatile and/or too soluble, resulting in fragrance loss during manufacturing, storage, and use. Many fragrance materials are also unstable over time. This again results in loss during storage.
In many consumer products it is desirable for the fragrance to be released slowly over time. Microencapsulation and inclusion complexes with cyclodextrins have been used to help decrease volatility, improve stability and provide slow-release properties. However, these methods are for a number of reasons often not successful. In addition, cyclodextrins can be too expensive.
Fragrance precursors for scenting fabrics being washed in the presence of a lipase-containing detergent are described in WO 95/04809. The fragrance precursors contained in the detergent and/or in the softener are cleaved by the lipase and a single odoriferous compound, either an odoriferous alcohol or aldehyde or ketone is yielded. Thereby a prolonged scenting effect on the fabric is obtained.
BRIEF SUMMARY OF THE INVENTION
One object of the present invention is to provide new precursors for compounds with different activities. It is a preferred object of the present invention to provide compounds that can be cleaved under different activating conditions. A further object of the invention is to provide new compounds which are stable under transport and storage conditions. A further object of the present invention is to provide precursor molecules supplying different active compounds simultaneously or successively.
REFERENCES:
patent: 3312226 (1967-04-01), Bavley et al.
patent: 5649979 (1997-07-01), Paget et al.
patent: 5726345 (1998-03-01), Paget et al.
patent: 2 603 886 (1988-03-01), None
patent: WO 95/04809 (1995-02-01), None
Chem. Abst. 122:240566 (1995).*
CA 126:76227 (1996).*
J. Chem Soc., Perkin Trans. I, 2509 (1993).
Anderson Denise
Frater Georg
Cave LLP Bryan
Givaudan Roure ( International ) SA
Haraez Stephen M.
Killos Paul J.
Waddell Mark E.
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