Fragrant formulations, methods of manufacture thereof and articles comprising the same

1. A fragrant formulation comprising:

at least one fragrant composition comprising vanillin, and

an alkyl ketal ester of formula (III) or formula (V)

Wherein R 1 is methyl, ethyl, n-propyl, or n-butyl.

2. The fragrant formulation of claim 1 , wherein the fragrant composition is a flavorant.

3. The fragrant formulation of claim 1 , wherein the fragrant composition is a perfume.

4. The fragrant formulation of claim 1 , wherein the fragrant composition comprises a perfume and a flavorant.

5. The fragrant formulation of claim 1 , wherein the alkyl ketal ester is selected from the group consisting of ethyl-LP K, n-butyl-LPK or combination comprising at least one of the foregoing alkyl ketal esters.

6. The fragrant formulation of claim 1 , further comprising at least one of

(a) a paraffinic, naphthenic, or aromatic mineral oil,

(b) a nonionic organic compound having a melting temperature of less than 45° C., a molecular weight of at least 190 Daltons,

an amido or ester group, and

an alkyl chain containing at least 8 carbon atoms, and

a solubility in water of no greater than 1 part in 99 parts of water;

(c) a nonionic organosilicone compound having a melting temperature of less than 45° C., and a solubility in water of no greater than 1 part in 99 parts of water;

(d) a long chain alcohol; and

(e) a wax.

7. The fragrant formulation of claim 1 , further comprising at least one fully water miscible alkyl ketal ester.

8. The fragrant formulation of claim 1 , further comprising at least one partially water-miscible alkyl ketal ester.

9. The fragrant formulation of claim 1 , further comprising at least one sparingly water-miscible alkyl ketal ester.

10. The fragrant formulation of claim 1 , further comprising water and a partially-or fully water-miscible alkyl ketal ester.

11. The fragrant formulation of claim 1 , comprising an alcoholic phase or an alcohol-water mixture.

12. The fragrant formulation of claim 1 , in the form of an emulsion comprising an aqueous phase and an oil phase, wherein the aqueous phase comprises the alkyl ketal ester, and the alkyl ketal ester is partially or fully water-miscible.

13. The fragrant formulation of claim 1 , in the form of an emulsion comprising an aqueous phase and an oil phase, wherein the oil phase comprises the alkyl ketal ester.

14. The fragrant formulation of claim 1 , comprising from about 0.001 to about 40 percent by weight of the fragrant composition, based on the total weight of the formulation.

15. The fragrant formulation of claim 1 , further comprising a surfactant.

16. The fragrant formulation of claim 1 , further comprising an antioxidant, an antiozonant, an antibacterial agent, a humectant, a colorant, a dye, a pigment, a food additNe, a pheromone, a musk, a carbonate ion source, an alkalizing agent, a pH buffer, a conditioning agent, a chelant, an auxiliary agent, a solvent, a surfactant, a nonsurfactant suspending agent, an emulsifier, a skin conditioning agent, a hair conditioning agent, a hair fixative, a film-former, a skin protectant, a binder, a chelating agent, an antimicrobial agent, an antifungal agent, an antidandruff agent, an abrasive, an adhesive, an absorbent, a deodorant agent, a antiperspirant agent, an opacifying and pearlescing agent, a preservative, a propellant, a spreading aid, a sunscreen agent, a sunless skin tanning accelerator, an ultraviolet light absorber, a pH adjusting agent, a botanical, a hair colorant, an oxidizing agent, a reducing agent, a skin bleaching agent, a pigment, a physiologically active agent, an anti-inflammatory agent, a topical anesthetic, and fragrance solubilizer, a fragrance fixative a polymer, or a combination comprising at least one of the foregoing.

17. The fragrant formulation of claim 1 , which is in the form of a candle.

18. A method for preparing the fragrant composition of claim 1 comprising:

blending a flagrant composition comprising vanillin and an alkyl ketal ester of formula (III) or formula (IV)

Wherein R 1 is methyl, ethyl, n-propyl, or n-butyl.

19. The method of claim 18 , further comprising extracting the fragrant composition using the ketal adduct.

20. The method of claim 19 , further comprising adding additional alkyl ketal ester to the fragrant composition.

21. The method of claim 19 , further comprising removing alkyl ketal ester from the fragrant composition.

22. The method of claim 18 , further comprising blending the fragrant composition with a compound, where the compound is an antioxidant, an antiozonant, an antibacterial agent, a humectant, a colorant, a dye, a pigment, a flavoring, a food additive, a pheromone, a musk, a carbonate ion source, an alkalizing agent, a pH buffer, a conditioning agent, a chelant, an auxiliary agent, a solvent, a surfactant, a nonsurfactant suspending agent, an emulsifier, a skin conditioning agent, a hair conditioning agent, a hair fixative, a film-former, a skin protectant, a binder, a chelating agent, an antimicrobial agent, an antifungal agent, an antidandruff agent, an abrasive, an adhesive, an absorbent, a dye, a deodorant agent, a antiperspirant agent, an opacifying and pearlescing agent, a preservative, a propellant, a spreading aid, a sunscreen agent, a sunless skin tanning accelerator, an ultraviolet fight absorber, a pH adjusting agent, a botanical, a hair colorant, an oxidizing agent, a reducing agent, a skin bleaching agent, a pigment, a physiologically active agent, an anti-inflammatory agent, a topical anesthetic, a perfume and perfume solubilizer, a polymer, or a combination comprising at least one of the foregoing.

23. An article comprising the fragrant composition of claim 1 .

24. The article of claim 23 , which is selected from the group consisting of body lotions, shampoos, massage oils, perfume sticks and lanterns, air fresheners, candles, paints, varnishes, furniture care, insect repellents, in polymers, cleaners, detergents, cosmetics, toiletries, cosmeceuticals and beauty aids, and personal hygiene and cleansing products applied to the skin, hair, scalp, and nails of humans and animals.

25. The article of claim 23 , which is in the form of a household care product.

26. The article of claim 23 , which is in the form of a health care product.

27. The formulation of claim 1 , wherein the formulation comprises 15 wt. % to 70 wt. % of the alkyl ketal ester of formula (III) or formula (IV) and 0.1 to 5 wt. % of the fragrant composition, all based on the total weight of the fragrant formulation.

28. The fragrant formulation of claim 1 , wherein the formulation comprises about 2.5 wt % to about 25 wt % of vanillin.

29. The fragrant formulation of claim 1 , wherein the formulation comprises about 10 wt % to about 25 wt % of vanillin.

30. The method of claim 18 , wherein the composition comprises about 2.5 wt % to about 25 wt % of vanillin.

31. The method of claim 18 , wherein the composition comprises about 10 wt % to about 25 wt % of vanillin.