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US 7,071,151 B2Granted
Compositions comprising photo-labile perfume delivery
AssigneeThe Procter & Gamble Company
InventorsRobert Richard Dykstra, Lon Montgomery Gray
Life of this patent
Estimating the term…
Abstract
The present invention relates to photo-labile pro-fragrances, as well as a fragrance raw material delivery system comprising: i) from about 0.001% to about 100% by weight, of a photo-labile pro-fragrance compound having the formula: wherein OR is a unit derived from a fragrance raw material alcohol, HOR; R1 is one or more electron donating groups; each R2 is independently hydrogen, C1–C12 alkyl, and mixtures thereof; and ii) optionally from about 0.001% to about 50% by weight, of one or more fragrance raw materials.
Claims2
A compound having the formula:
- wherein OR derives from a fragrance raw material alcohol selected from the group consisting of 4-(1-methylethyl)cyclohexanemethanol, 2,4-dimethyl-3-cyclohexen-1-ylmethanol, 2,4-dimethylcyclohex-1-ylmethanol, 2,4,6-trimethyl-3-cyclohexen-1-ylmethanol, 2-phenylethanol, 1-(4-isopropylcyclohexyl)ethanol, 2-(o-methylphenyl)ethanol, 2-(m-methylphenyl)ethanol, 2-(p-methylphenyl)ethanol, 2,2-dimethyl-3-(3-methylphenyl)propan-1-ol, 3-phenyl-2-propen-1-ol, 2-methyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol, 3-methyl-5-phenylpentan-1-ol, 3-methyl-5-(2,2,3-trimethyl-3-cyclopenten-1-yl)-4-penten-2-ol, 2-methyl-4-phenylpentan-1-ol, cis-3-hexen-1-ol, 3,7-dimethyl-6-octen-1-ol, 3,7-dimethyl-2,6-octadien-1-ol, 7-methoxy-3,7-dimethyloctan-2-ol, 6,8-dimethylnonan-2-ol, cis-6-nonen-1-ol, 2,6-nonadien-1-ol, 4-methyl-3-decen-5-ol, benzyl alcohol, 2-methoxy-4-(1-propenyl)phenol, 2-methoxy-4-(2-propenyl)phenol, 4-hydroxy-3-methoxybenzaldehyde, and mixtures thereof.
Dependencies are inferred from the claim text.