# Patent

## Title
Encapsulated flavor and fragrance

## Abstract

The present invention provides solid complexes of urea and flavor and fragrance chemicals as well as methods of providing the complexes. The complexes are advantageously incorporated in powdered detergent and bleach products. The urea complexes protect the flavor or fragrance molecules from chemical reaction with other elements of the products. When added to water the urea complex is quickly removed from the flavor or fragrance molecule thereby delivering the material at the desired time.

## Background
FIELD OF THE INVENTION
The present invention is related to flavor and fragrance molecules that are protected by a urea complex. The urea complex prevents the flavor and fragrance molecules from oxidation prior to being released at the desired time.
BACKGROUND OF THE INVENTION
Flavor and fragrance molecules are often placed in environments that adversely effect the stability of the flavor or fragrance. For example, laundry bleaches contain oxidizing agents that can cause a fragrance to oxidize thereby diminishing the delivery of the fragrance at the desired time.
Various approaches have been tried to protect the flavor or fragrance such as encapsulation in various materials such as waxes or polymers. These approaches suffer from the drawback of additional cost of the encapsulating material, additional and costly processing to encapsulate the fragrance or flavor and the need to remove the encapsulating material in an inexpensive and easy manner.
A continuing need exists for a simple, inexpensive method to protect flavor and fragrance materials prior to use, the coating being easily removed when desired.
SUMMARY OF THE INVENTION
The present invention provides a solid complex comprising:

    
    
        a substantially linear flavor or fragrance molecule, the flavor or fragrance molecule having a backbone of at least 5 atoms in length; and
        urea wherein the urea provides a protective complex around the substantially linear flavor or fragrance molecule.
    
    


The present invention also provides a method for providing a flavor or fragrance molecule with a protective coating comprising:

    
    
        providing urea in an amount sufficient to provide a protective coating;
        providing a solvent;
        providing a substantially linear flavor or fragrance molecule having a background of greater than or equally to five molecules;
        admixing said urea, solvent and flavor or fragrance molecule;
        removing said solvent and recovering said flavor or fragrance molecule with protective urea coating.
    
    


These and other embodiments of the present invention will be described herein.
DETAILED DESCRIPTION OF THE INVENTION
The present invention is directed to a method for creating a protective urea barrier around a flavor or fragrance molecule. The urea forms a complex that protects the flavor or fragrance molecule. The present invention is well suited to be used in powdered detergents since the flavor and fragrance molecules would be protected by the urea complex until it is placed into water, preferably warm water, which would release the fragrance from the urea complex and impart the fragrance to the clothes. In addition, the urea complex protects the fragrance molecules from oxidizing agents in a detergent, such as bleach, prior to use.
The flavor or fragrance compounds of the present invention are substantially linear, having a minimum chain length of greater or equal to five carbon atoms. More preferably the molecules have a minimum chain length of greater than or equal to five carbon atoms, more preferably greater than or equal to 8 carbon atoms. In the present invention, molecules having longer chain lengths are easily accommodated by the use of higher levels of urea. Shorter molecules, i.e., molecules of C2, C3 and C4 are not viable since these molecules are too short to be successfully complexed by urea. As used in throughout this specification, the term compound contemplates mixtures, combinations of two or more suitable molecules rather than a single material being encapsulated by urea.
The term substantially linear is understood to mean that the backbone does not contain any branches containing three or more atoms, other than hydrogen, off of the main backbone of the molecule. The backbone of the molecule may contain a ring, such as cyclopentane, cyclobutane, cyclohexane as well as aryl rings. The backbone of the molecule may also include epoxy bridges without deviating from the scope of the present invention. Preferably the molecules to be complexed with the urea do not contain any sidechains, however the present invention contemplates less than about 7, preferably less than about 6, preferably less than about 5 sidechains on the molecule. In highly preferred situations, there are fewer than about 4, preferably fewer than about 3 and most preferably fewer than about 2 sidechains on the molecule.
For purposes of explanation, the number of atoms in the backbone of the molecule is set forth in the following examples. As with conventional chemical naming techniques, the longest molecular chain is designated as the backbone. Atoms in the backbone include, but are not limited to, carbon, oxygen, nitrogen, silicon, phosphorous, sodium, potassium, calcium and the like. Hydrogen atoms are not counted among the atoms along the backbone. The sidechains are the atoms that are off of the backbone, i.e., are not part of the longest chain. The following molecules are within the scope of the present invention, the numbers indicting the length of the backbone of the molecule, as well as the length of any side chains: 




The following molecules are not within the scope of the present invention due to having side chains that render the molecule substantially non-linear: 




Also not contemplated by the present invention are molecules having attached multiple ring groups, the ring groups can be carbon rings or heterocyclic rings. These attached rings create make the rings too bulk for complexation with urea. For clarity the molecules that contain multiple adjacent attached rings such as found in napthalene and anthracene are outside the scope of the present invention.
Olfactory effective amount is understood to mean the amount of compound in perfume compositions the individual component will contribute its particular olfactory characteristics, but the olfactory effect of the perfume composition will be the sum of the effects of each of the perfume or fragrance ingredients. Thus the compounds of the invention can be used to alter the aroma characteristics of the perfume composition, or by modifying the olfactory reaction contributed by another ingredient in the composition. The amount will vary depending on many factors including other ingredients, their relative amounts and the effect that is desired.
Taste effective amount is understood to mean the amount of compound in compositions the individual component will contribute its particular taste characteristics, but the taste effect of the perfume composition will be the sum of the effects of each of the taste ingredients. Thus the compounds of the invention can be used to alter the taste of the food, or by modifying the taste contributed by another ingredient in the composition. The amount will vary depending on many factors including other ingredients, their relative amounts and the effect that is desired.
The level of flavor or fragrance molecule complexed by urea varies from 0.01 to about 20 weight percent, preferably from about 0.1 to about 10 weight percent, more preferably from about 1.0 to about 5 weight percent of the total composition.
The flavor and fragrance molecules of the present invention are select from the group consisting of (C5-C12)alkyl, (C5-C12)alkoxy, halo(C5-C12)alkyl, halo(C5-C12)alkoxy, (C5-C12)alkenyl, halo(C5-C12)alkenyl, (C5-C12)alkynyl, halo(C5-C12)alkynyl, (C5-C12)alkoxy(C1-C12)alkyl, (C5-C12)alkoxy(C2-C12)alkenyl, (C1-C12)alkoxy(C2-C12)alkynyl, (C2-C12)alkenyl(C1-C12)alkoxy, (C2-C12)alkynyl(C1-C12)alkoxy, (C2-C12)alkynyl(C2-C12)alkenyl, (C2-C12)alkenyl(C2-C12)alkynyl, (C3-C7)cycloalkyl, halo(C3-C7)cycloalkyl, (C3-C7)cycloalkyl(C1-C12)alkyl, (C3-C7)cycloalkyl(C2-C12)alkenyl, (C3-C7)cycloalkyl(C2-C12)alkynyl, (C1-C12)alkyl(C3-C7)cycloalkyl, (C1-C12)alkoxy(C3-C7)cycloalkyl, (C2-C12)alkenyl(C3-C7)cycloalkyl, (C2-C12)alkynyl(C3-C7)cycloalkyl, halo(C1-C12)alkyl(C3-C7)cycloalkyl, halo(C1-C12)alkoxy(C3-C7)cycloalkyl, halo(C2-C12)alkenyl(C3-C7)cycloalkyl, halo(C2-C12)alkynyl(C3-C7)cycloallyl, halo(C3-C7)alkenyl(C3-C7)cycloalkyl, (C1-C12)alkoxy(C1-C12)alkyl(C3C7)cycloalkyl, halo(C3-C7)cycloalkyl(C3-C7)cycloalkyl, (C1-C12)alkoxy(C1-C12)alkyl(C3-C7)cycloalkyl, (C1-C12)alkoxy(C2-C12)alkenyl(C3-C7)cycloalkyl, (C2-C12)alkenyl(C1-C12)alkoxy(C3-C7)cycloalkyl, (C1-C12)alkoxy(C2-C12)alkynyl(C3-C7)cycloalkyl, (C2-C12)alkynyl(C1-C12)alkoxy(C3-C7)cycloalkyl, (C2-C12)alkenyl(C2-C12)alkynyl(C3-C7)cycloalkyl, (C2-C12)alkynyl(C2-C12)alkenyl(C3-C7)cycloalkyl, (C3-C7)cycloalkyl(C3-C7)cylcoalkyl, (C1-C12)alkyl(C3-C7)cycloalkyl(C3-C7)cycloalkyl, (C2-C12)alkenyl(C3C7)cycloalkyl(C3-C7)cycloalkyl, (C2-C12)alkynyl(C3-C7)cycloalkyl(C3-C7)cycloalkyl, (C1-C12)alkoxy(C3-C7)cycloalkyl(C3-C7)cycloalkyl, (C3-C7)cycloalkyl(C1-C12)alkyl(C3-C7)cycloalkyl, (C3-C7)cylcoalkyl(C2-C12)alkenyl(C3-C7)cycloalkyl, (C3-C7)cycloalkyl(C2-C12)alkynyl(C3-C7)cycloalkyl, (C3-C7)cycloalkyl(C1-C12)alkoxy(C3-C7)cycloalkyl, (C3-C7)cycloalkyl(C3-C7)cycloalkyl(C3-C7)cycloalkyl, (C3-C7)cycloalkyl(C1-C12)alkenyl(C3-C7)cycloalkyl, (C3-C7)cycloalkyl(C1-C12)alkoxy(C2-C12)alkynyl(C3-C7)cycloalkyl, aryl, aralkyl, aryl(C1-C12)alkoxy, aryl(C2-C12)alkenyl, aryl(C2-C12)alkynyl, aryl(C3-C7)cycloalkyl, aryloxy(C1-C12)alkyl, aryloxy(C2-C12)alkynyl, aryloxy(C2-C12)alkenyl, aryl(C1-C12)alkoxy(C3-C7)cycloalkyl, aryl(C2-C12)alkenyl(C3-C7)cycloalkyl, aryl(C2-C12)alkynyl(C3-C7)cycloalkyl, aryl(C3-C7)cycloalkyl(C3-C7)cycloalkyl, (C3-C7)cycloalkylaryl, aryl(C1-C4)alkyl(C3-C7)cycloalkyl, heterocyclic, aryl(C1-C4)alkylheterocyclic, aryl(C2-C4)alkenylheterocyclic, aryl(C2-C4)alkynylheterocyclic, heterocyclic(C1-C4)alkyl, and heterocyclic(C3-C7)cycloalkyl, (C1-C6)alkylphosphinyl, (C-C6)alkylphosphonyl, (C1-C6)alkylphosphonate, (C1-C6)alkylphosphite.
The term “alkyl” includes both branched and straight chain alkyl groups from 5 to 12 carbon atoms. Typical alkyl groups are n-pentyl, isopentyl, n-hexyl, n-heptyl, n-octyl, isooctyl, nonyl, decyl, undecyl, dodecyl, n-hexadecyl, n-tetracosyl, n-octacyosanyl and the like. Also included are alkyls with a branch in the chain. For example, those with skill in the art will recognize that there are numerous variations that are possible with any materials listed in this application. For example, included in the present invention are heptanes (C7H16) which include the following molecules n-heptane, 2-methylhexane, 3-methylhexane, 2,2-dimethylpentane, 2,3-dimethylpentane, 2,4-dimethylpentane, 3,3dimethylpentane 3-ethylpentane, 2,2,3-trimethylbutane. The term “haloalkyl” refers to a straight or branched alkyl group substituted with 1 to 3 halogens.
The term “alkoxy” includes both branched and straight chain alkyl groups from 1 to 12 carbon atoms containing at least one oxygen atom. Typical alkoxy groups are n-pentoxy, isopentoxy, n-hexoxy, n-heptoxy and the like. The term “haloalkoxy” refers to an alkoxy group substituted with 1 to 3 halogens.
The term “alkenyl” refers to an ethylenically unsaturated hydrocarbon group, straight or branched, having a chain length of 5 to 12 carbon atoms and 1 to 2 ethylenic bonds. The term “haloalkenyl” refers to an alkenyl group substituted with 1 to 3 halogen atoms.
The term “alkynyl” refers to an unsaturated hydrocarbon group, straight or branched, having a chain length of 5 to 12 carbon atoms and 1 to 2 acetylenic bonds. The term “halokynyl” refers to an alkynyl group substituted with 1 to 3 halogens.
The term “cycloalkyl” refers to a saturated ring system having 3 to 7 carbon atoms.
The term “aryl” includes phenyl or napthyl, which may be substituted with up to three substituents independently selected from the group consisting of halogen, cyano, nitro, phenyl, phenoxy, (C1-C6)alkyl, (C1-C4)alkylthio, (C1-C4)alkylsulfoxide, (C1-C6)alkoxy, and halo (C1-C4) alkyl.
Typical aryl substituents include, but are not limited to, 4-chlorophenyl, 4-fluorophenyl, 4-bromophenyl, 2-methoxyphenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, 2,4-dibromophenyl, 3,5-difluorophenyl, 2,4,6-trichlorophenyl, 4-methoxyphenyl, 2-chloronapthyl, 2,4-dimethoxyphenyl, 4-(trifluoromethyl)phenyl and 2-iodo-4-methylphenyl.
The term “heterocyclic” refers to a substituted or unsubstituted 5 to 6 membered unsaturated ring containing one, two or three heteroatoms, preferably one or two heteroatoms independently selected from oxygen, nitrogen and sulfur, or to a bicyclic unsaturated ring system containing up to 10 atoms including one heteroatom selected from oxygen, nitrogen and sulfur. Examples of heterocycles include, but are not limited to, 2-, 3-, or 4-pyridinyl, pyrazinyl, 2-, 4-, or 5-pyrimidinyl, pyridazinyl, triazolyl, imidazolyl, 2- or 3-thienyl, 2- or 3-furyl, pyrrolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl, quinolyl and isoquinolyl. The heterocyclic ring may be optionally substituted with up to two substituents independently selected from (C1-C2) alkyl, halogen, cyano, nitro and trihalomethyl.
The term “aralkyl” is used to describe a group wherein the alkyl chain is from 1 to 10 carbon atoms and can be branched or straight chain, preferably a straight chain, with the aryl portion, as defined above, forming a terminal portion of the aralkyl moiety. Typical aralkyl moieties are optionally substituted benzyl, phenethyl, phenpropyl and phenbutyl moieties. Typical benzyl moieties are 2-chlorobenzyl, 3-chlorobenzyl, 4-chlorobenzyl, 2-fluorobenzyl, 3-fluorobenzyl, 4-fluorobenzyl, 4-trifluoromethylbenzyl, 2,4dichlorobenzyl, 2,4-dibromobenzyl, 2-methylbenzyl, 3-methylbenzyl and 4-methylbenzyl. Typical phenethyl moieties are 2-(chlorophenyl)ethyl, 2-(3-chlorophenyl)ethyl, 2-(4-chlorophenyl)ethyl, 2-(2-fluorophenyl)ethyl, 2-(3-fluorophenyl)ethyl, 2-(4-fluorophenyl)ethyl, 2-(2-methylphenyl)ethyl, 2-(3-phenyl)ethyl, 2-(4-methylphenyl)ethyl, 2-(4-trifluoromethylphenyl)ethyl, 2-(2methoxyphenyl)ethyl, 2-(3-methoxyphenyl)ethyl, 2-(4-methoxyphenyl)ethyl, 2-(2,4-dichlorophenyl)ethyl, 2-(3,5-methoxyphenyl)ethyl. Typical phenpropyl moieties are 3-phenylpropyl, 3-(2-chlorophenyl)propyl, 3-(3-chlorophenyl)propyl, 3-(4-chlorophenyl)propyl, 3-(2,4-dichlorophenyl)propyl, 3-(2-fluorophenyl)propyl, 3-(3-fluorophenyl)propyl, 3-(4-fluorophenyl)propyl, 3(2-methylphenyl)propyl, 3-(3-methylphenyl)propyl, 3-(4-methylphenyl)ethyl, 3-(2-methoxyphenyl)propyl, 3-(3-methoxyphenyl)propyl, 3-(4-methoxyphenyl)propyl, 3-(4-trifluoromethylphenyl)propyl, 3-(2,4-dichlorophenyl)propyl and 3-3,5dimethoxyphenyl) propyl.
Typical phenbutyl moieties include 4-phenylbutyl, 4-(2-chlorophenyl)butyl, 4-(3-chlorophenyl)butyl, 4-(4-chlorophenyl)butyl, 4-(2-fluorophenyl)butyl, 4-(3-fluorophenyl) butyl, 4-(4-fluorophenyl) butyl, 4-(2-methylphenyl)butyl, 4-(3-methylphenyl)butyl, 4-(4-methylphenyl)butyl, 4-(2,4-dichlorophenyl)butyl, 4-(2-methoxyphenyl)butyl, 4-(3-methoxyphenyl)butyl and 4-(4-methoxyphenyl) butyl.
Halogen or halo is meant to include iodo, fluoro, bromo and chloro moieties.
Preferably the molecules encapsulated by urea are linear such as n-octanol, n-dodecanol and the like. The present invention contemplates some branching off of the main backbone. Various atoms may be contained in the flavor or fragrance molecules of the present invention. In addition to hydrocarbons containing carbon and hydrogen, molecules of the present invention may also include other atoms, including but not limited to oxygen, nitrogen, phosphorus and sulfur. The molecules include without limitation, alcohols, esters, aldehydes, acids and hydrocarbons.
The following materials are commercially available fragrance materials available from International Flavors & Fragrances Inc., Hazlet, N.J. Suitable alcohols include, but are not limited to:











NAME
COMMON NAME







10-Undecen-1-ol
ALCOHOL C-11 UNDECYLENIC


Alpha-n-Amyl Cinnamyl Alcohol
AMYL CINNAMIC ALCOHOL


1-Octen-3-ol
AMYL VINYL CARBINOL


Para-Methoxy Benzyl Alcohol
ANISIC ALCOHOL


Alpha-3,3-Trimethyl Cyclohexane-
APHERMATE


1-Methanol


Para-Isopropyl Cyclohexanol
APO PATCHONE


2-Ethyl-4-(2,2,3-Triethyl-3-Cyclo-
BACDANOL


penten-1-yl-2-Buten-1-ol


3,7-Dimethyl-6-Octen-1-ol
CITRONELLOL COEUR


Phenoxy Acetaldehyde
CORTEX ALDEHYDE


Para-Cymen-7-ol
CUMINYL ALCOHOL


3,7-Dimethyl-6-Octen-3-ol
DIHYDRO LINALOOL


3,7-Dimethyl-1-Octanol
DIMETHYL OCTANOL


2-Methyl-4-Phenyl-2-Butanol
DIMETHYL PHENYL ETHYL



CARBINOL


2,4-Dimethyl-3-Cyclohexene-1-
FLORALOL


Methanol


3,7-Dimethyl-2,6-Octadien-1-ol
GERANIOL ABSOLUTE


O,m,p-Methyl Phenyl Ethanol
HAWTHANOL


3-Hexen-1-ol
HEXENOL


Beta-Methyl Phenyl Ethyl Alcohol
HYDRATROPIC ALCOHOL



COEUR


3,7-Dimethyl-1,7-Octanediol
HYDROXYOL


Alpha-Isobutyl Phenethyl Alcohol
ISOBUTYL BENZYL CARBINOL


3,4,5,6,6-Pentamethyl-2-Heptanol
KOHINOOL


2,6,-Dimethyl Heptan-6-ol
LOLITOL


2,6-Dimethyl-7-Octen-2-ol
LYMOLENE


5-(2,6,6-Triethyl-2-Cyclohexen-1-
ALPHA METYYL IONONE


yl)-4-Penten-3-one


3-Methyl-4-2,6,6-Trimethyl-1-
DELTA METHYL IONONE


Cyclohexen-1-yl)-3-Buten-2-one


2,6-Dimethyl-3,5-Octadien-2-ol
MUGUOL


2-Methyl-6-Methylene-7-Octen-2-
MYRCENOL


ol


3,7-Dimethyl-2,6-Octadien-1-ol
NEROL


2,6-Dimethyl-5,7-Octadien-2-ol
OCIMENOL


alpha,alpha-4-Trimethyl Benzene
PARA METHYL DIMETHYL


Ethanol
BENZYL CARBINOL


4-Tertiary Butyl Cyclohexanol
PATCHONE


3-Methyl-5-Phenyl-1-Petntanol
PHENOXANOL


2-Benzyl-M-Dioxan-5-ol
PHENYL ACETALDEHYDE



GLYCERINE ACETAL


2-Phenyl Ethyl Alcohol
PHENYL ETHYL ALCOHOL


3-Methyl-1-Phenyl-3-Pentanol
PHENYL ETHYL METHYL



ETHYL CARBINOL


3,7-Dimethyl-6-Octen-1-ol
RHODINOL COEUR


9-Decen-1-ol
ROSALVA


alpha,lpha-4-Trixnethyl-3-Cyclo-
ALPHA TERPINEOL


hexene-1-Methanol


3,7-Dimethyl-3-Octanol
TETRAHYDRO LINALOOL


2,6-Dimethyl-2-Octanol
TETRAHYDRO MYRCENOL


2-Tertiary-Butyl Cyclohexanol
VERDOL









Suitable aldehydes include, commercially available as a fragrance, but are not limited to:











NAME
COMMON NAME







1-Octanal
ALDEHYDE C-8


1-Nonanal
ALDEHYDE C-9


1-Decanal
ALDEHYDE C-10


2-Methyl Decanal
ALDEHYDE C-11 MOA


10-Undecen-1-al
ALDEHYDE C-11 UNDECYLENIC


1-Undecanal
ALDEHYDE C-11 UNDECYLIC


1-Dodecanal
ALDEHYDE C-12 LAURIC


2-Methyl Undecanal Methyl Nonyl
ALDEHYDE C-12 MNA


Acetaldehyde


alpha-n-Amylcinnamic Alcohol
AMYL CINNAMIC ALDEHYDE


Coeur
COEUR


3,7-Dimethyl-2-Methylene-6-
BERGAMAL


Octenal


2-Methyl-3-(para-Methoxy
CANTHOXAL


Phenyl)Propanal


3,7-Dimethyl-2,6-Octadien-1-al
CITRAL


3,7-Dimethyl-2,6-Octadienal
CITRAL DIMETHYL ACETAL


Dimethyl Acetal


3,7-Dimethyl-6-Octen-1-al
CITRONELLAL


3,7-Dimethyl-6-Octenyl Methyl
CITRONELLYL METHYL


Acetal
ACETAL


2-Heptyl-1,3-Dioxolane Octanal
CYCLOCTAL


Glycol Acetal


Para-Ethyl-alpha,alpha-Dimethyl
FLORALOZONE


Hydrocinnamaldehyde


5,9-Dimethyl-4,8-Decadienal
GERALDEHYDE


6,10-Dimethyl-3-oxa-5,9-
PEONY ALDEHYDE


Undecadien-1-al


Alpha-n-Hexyl Cinnamic Aldehyde
HEXYL CINNAMIC ALDERYDE


m-Cymene-7-Carboxaldhyde
HOMOCUMINIC ALDERYDE 50


Ethyl Phenethyl Acetal
HYACINTH BODY


Acetaldehyde


Phenethyl Propyl Acetal
HYACINTH BODY NO. 31


Acetaldehyde


Alpha-Methyl Phenylacetaldehyde
HYDRATROPIC ALDERYDE


7-Hydroxy-3,7-Dimethyl Octanal
HYDROXYCITRONELLAL


10-Undecenal
INTRELEVEN ALDEHYDE


Ethyl-cis-3-Hexenyl Acetal
LEAF ACETAL EXTRA


Acetaldehyde


3,7-Dimethyl-2,6-Octadien-1-al
LEMSYN


4-(4-Hydroxy-4-Methyl Pentyl)-3-
LYRAL


Cyclohexene-1-Carboxaldehyde


2-Methyl-3-Phenyl-2-Propen-1-al
ALPHA-METHYL CINNAMIC



ALDEHYDE


2-Methyl Octanal
METHYL HEXYL



ACETALDEHYDE


3,7-Dimethyl-6-Octenyl-oxy-
MUGUET ALDEHYDE 50


Acetaldehyde


4-(4-Methyl-3-Pentenyl)-3-Cyclo-
MYRAC ALDEHYDE


hexene-1-Carboxaldehyde


Alpha-Methyl-4-(1-Methyl
PARA ISOPROPYL


Benzene Acetaldehyde
HYDRATROPIC ALDEHYDE


Dihydro Cinnamic Acetate
PHENYL PROPYL ACETATE


1-Methyl-4-(4-Methyl-3-Pentenyl)-
PRECYCLEMONE B


3-Cyclohexene-1-Carboxaldehyde


2,4-Dimethyl-3-Cyclohexene-1-
TRIPLAL


3,5,5-Trimethyl Hexanal
VANDOR B


Para-Methyl Phenoxy
XI ALDEHYDE


Acetaldehyde









Suitable esters, commercially available as a fragrance, include but are not limited to:











NAME
COMMON NAME







2-Methoxy-4-Propenyl-1)-Phenyl
ACETYL ISOEUGENOL


Acetate


2-Pentyloxy-Allyl Ester Glycolic
ALLYL AMYL GLYCOLATE


Acid


Allyl-n-Hexanoate
ALLYL CAPROATE


3-Cyclohexyl Propionic Acid,
ALLYL CYCLOHEXYL


Allyl Ester
PROPIONATE


Propionate-9-Decen-1-ol
AMBRONATE


Isoamyl-n-Butyrate
AMYL BUTYRATE


Alpha-n-Amyl Cinnamyl Acetate
AMYL CINNAMIC ACETATE


Phenyl Acetic Acid, Isoamyl Ester
AMYL PHENYL ACETATE


Isoamyl Propionate
AMYL PROPIONATE


Pentyl Ortho Hydroxy Benzoate
AMYL SALICYLATE


2(3)-Methyl Butanoic-1-Acid:2(3)-
AMYL VALERATE


Methyl Butyl-1-Ester


1-Octen-3-yl Acetate
AMYL VINYL CARBINYL



ACETATE


3-Phenyl-3-Buten-1-yl Acetate
ANISIMAL


Para-Methoxy Benzyl Acetate
ANISYL ACETATE


Benzyl-n-Butanoate
BENZYL-n-BUTYRATE


Formic Acid Benzyl Ester
BENZYL FORMATE


Benzyl-3-Methyl Butyrate
BENZYL ISOVALERATE


Benzyl-n-Propanoate
BENZYL PROPIONATE


Benzyl ortho Hydroxy Benzoate
BENZYL SALICYLATE


3-Phenyl-2-Propen-1-yl Acetate
CINNAMYL ACETATE


3,7-Dimethyl-6-Octen-1-yl Acetate
CITRONELLYL ACETATE


3,7-Dimethyl-6-Octen-1-yl
CITRONELLYL PROPIONATE


Propionate


2-Tertiary Pentyl Cyclohexanyl
CONIFERAN


Acetate


Para-Cymen-7-yl Acetate
CUMINYL ACETATE


Cyclohexanethanyl Acetate
CYCLOHEXYLETHYL ACETATE


6-Methyl-3-Isopropenyl Cyclo-
DIHYDRO CARVYL ACETATE


hexanyl Acetate


Cyclohexane Methanol, 2,4-
DIHYDRO FLORALATE


Dimethyl Acetate


2,6-Dimethyl-7-Octen-2-yl Acetate
DIHYDRO MYRCENYL ACETATE


alpha,alpha-Dimethyl Phenethyl
DIMETHYL BENZYL CARBINYL


Acetate
ACETATE


alpha,alpha-Dimethyl Phenethyl
DIMETHYL BENZYL CARBINYL


Butyrate
BUTYRATE


alpha,alpha-Dimethyl Phenethyl
DIMETHYL BENZYL CARBINYL


Isobutyrate
ISOBUTYRATE


alpha,alpha-Dimethyl Phenethyl
DIMETHYL BENZYL CARBINYL


Propionate
PROPIONATE


3,7-Dimethyl-1-Octanyl Acetate
DIMETHYL OCTANYL ACETATE


2-Methyl-4-Phenyl-2-Butyl Acetate
DIMETHYL PHENYL ETHYL



CARBINYL ACETATE


2-Methyl-4-Phenyl-2-Butyl
DIMETHYL PHENYL ETHYL


Isobutyrate
CARBINYL ISOBUTYRATE


Ethyl-3-Hydroxy Butyrate
ETHOXIFF


n-Butyric Acid Ethyl Ester
ETHYL BUTYRATE


n-Hexanoic Acid Ethyl Ester
ETHYL CAPROATE


3,7-Dimethyl-6-Octenyl Ethyl
ETHYL CITRONELLYL


Ester Oxalic Acid
OXALATE


Isovaleric Acid Ethyl Ester
ETHYL ISOVALERATE


3-Methyl-3-Phenyl Glycidic Acid
ETHYL METHYL PHENYL


Ethyl Ester
GLYCIDATE


2-Methoxy Benzoic Acid Ethyl
ETHYL ORTHO METHOXY


Ester
BENZOATE


3-Phenyl Glycidic Ethyl Ester
ETHYL-3-PHENYL GLYCIDATE


4-Allyl-2-Methoxy Phenol Acetate
EUGENYL ACETATE


4-Allyl-2-Methoxy Phenyl Phenol
EUGENYL PHENYL ACETATE


Acetate


2,4-Dimethyl-3-Cyclohexene-1-
FLORALATE


Methanyl Acetate


Ethyl-2,4-Dimethyl-1,3-Dioxolane-
FRAISTONE


2-Acetate


Ethyl-2-Methyl-1,3-Dioxolane-2-
FRUCTONE


Acetate


Ethyl-2-Hexyl Acetoacetate
GELSONE


3,7-Dimethyl-2,6-Octadien-1-yl
GERANYL ACETATE


Acetate


3,7-Dimethyl-2,6-Octadien-1-yl-
GERANYL BUTYRATE


Butyrate


3,7-Dimethyl-2,6-Octadien-1-yl
GERANYL FORMATE


Formate


3,7-Dimethyl-2,6-Octadien-1-yl
GERANYL ISOBUTRATE


Isobutyrate


3,7-Dimethyl-2,6-Octadien-1-yl
GERANYL PROPIONATE


Propionate


Isobutyric Acid,2,4-Hexadienyl
HEXADIENYL ISOBUTYRATE


Ester


n-Hexyl Acetate
HEXYL ACETATE


n-Hexyl-ortho-Hydroxy Benzoate
n-HEXYL SALICYLATE


BETA-Methyl Phenethyl Alcohol
HYDRATROPYL ACETATE


Acetate


2-Furanpropionic Acid, Isobutyl
ISOBUTYL FURYL PROPIONATE


Ester


Phenyl Acetic Acid, Isobutyl
ISOBUTYL PHENYL ACETATE


Ester


2H-Pyran-4-ol, Tetrahydro-3-
JASMAL


Pentyl Acetate


2H-Pyran-4-ol, 3-Butyltetrahydro-
JASMELIA


5-Methyl Acetate


2H-Pyran-4-ol, 3-Butyltetrahydro-
JESSEMAL


5-Methyl Acetate


Ethyl-3-Hydroxy-3-Phenyl
LABDANAX


Propionate


Cis-3-Hexenyl Methyl Carbonate
LIFFAROME


Anthranillic Acid, Methyl Ester
METHYL ANTHRANILATE


10-Undecenoic Acid, Methyl Ester
METHYL UNDECYLENATE


7-Octen-2-ol, 2-Methyl-6-
MYRCENYL ACETATE


Methylene Acetate


2,6-Octadien-1-ol, 3,7-Dimethyl
NERGER FORMATE


Formate


2,6-Octadien-1-ol, 3,7-Dimethyl
NERYL ACETATE


Acetate


Nonyl Alcohol Acetate
NONYL ACETATE


2-Norpinene-2-Ethanol, 6,6-
NOPYL ACETATE


Dimethyl Acetate


5,7-Octadien-2-ol, 2,6-Dimethyl
OCIMENYL ACETATE


Acetate


Lauric Acid Ethyl Ester
OENANTHIC ETHER


Octanoic Acid, p-Tolyl Ester
PARA CRESYL CAPRYLATE


Isobutyric Acid, p-Tolyl Ester
PARA CRESYL ISOBUTYRATE


4-Methyl Benzene Methanol
PARA METHYL BENZYL


Acetate
ACETATE


2-Phenoxyethyl Isobutyrate
PHENOXY ETHYL



ISOBUTYRATE


2-Phenoxyethyl Propionate
PHENOXYETHYL PROPIONATE


2-Phenyl Ethyl Acetate
PHENYL ETHYL ACETATE


2-Phenyl Ethyl Benzoate
PHENYL ETHYL BENZOATE


Beta-Phenyl Ethyl n-Butyrate
PHENYL ETHYL n-BUTYRATE


Cinnamic Acid, Phenethyl Ester
PHENYL ETHYL CINNAMATE


Phenethyl Alcohol Formate
PHENYL ETHYL FORMATE


Beta-Phenyl Ethyl Isobutyrate
PHENYL ETHYL ISOBUTYRATE


3-Pentanol, 3-Methyl-1-Phenyl
PHENYL ETHYL METHYL


Acetate
ETHYL CARBINYL ACETATE


Beta-Phenyl Ethyl Phenyl Acetate
PHENYL ETHYL PHENYL



ACETATE


Beta-Phenyl Ethyl Propionate
PHENYL ETHYL PROPIONATE


Beta-Phenyl Ethyl Salicylate
PHENYL ETHYL SALICYLATE


Dihydro Cinnamic Acetate
PHENYL PROPYL ACETATE


Dihydro Cinnamic Propionate
PHENYL PROPYL PROPIONATE


2-Buten-1-ol-3-Methyl Acetate
PHENYL ACETATE


2-Buten-1-ol-3-Methyl Benzoate
PROFLORA


6-Octen-1-ol-3,7-Dimethyl Acetate
RHODINYL ACETATE


6-Octen-1-ol-3,7-Dimethyl
RHODINYL BUTYRATE


Butyrate


6-Octen-1-ol-3,7-Dimethyl
RHODINYL FORMATE


Formate


6-Octen-1-ol-3,7-Dimethyl
RHODINYL ISOBUTYRATE


Isobutyrate


Cyclohexane-1-Methanol, alpha,
ROSAMUSK


3,3-Trimethyl Acetate


9-Decen-1-yl Acetate
ROSEATE


Methyl Phenyl Carbinyl Acetate
STYRALYL ACETATE


Methyl Phenyl Carbinyl Propionate
STYRALYL PROPIONATE


3-Cyclohexene-1-Methanol, alpha,
TERPINYL ACETATE


alpha, 4-Trimethyl Acetate


3-Octanol, 3,7-Dimethyl-2-
TETRAHYDRO MUGYL


Octanol, 2,6-Dimethyl Acetate
ACETATE


3,55-Trimethyl Hexyl Acetate
VANORIS


3,6-Dimethyl-beta-Resorcyclic
VERAMOSS


Acid Methyl Ester


2-Tertiary-Butyl-Cyclohexanyl
VERDOX


Acetate


Cis-3-Hexenyl Acetate
VERDURAL EXTRA


Cis-3-Hexen-1-yl Isobutyrate
VERDURAL B EXTRA


Para-Tertiary-Butyl-Cyclohexyl
VERTENEX


Acetate


2-Methyl Butyl Salicylate
ISOAMYL SALICYLATE


n-Amyl Salicylate
PENTYL SALICYLATE









Suitable ketones include, commercially available as a fragrance, but are not limited to:











NAME
COMMON NAME







Para-Methoxy Acetophenone
ACETANISOLE


2-n-Heptyl Cyclopentanone
FLEURAMONE


Allyl alpha-Ionone
HEXALON


4-(2,6,6-Trimethyl-1-Cyclohexen-1-
IONONE


yl)-3-Buten-2-one


2,3,6-Trimethyl Cyclohexen-4-yl-1-
METHYL CYCLO CITRONE


Methyl Ketone


4-(2,4,6-Trimethyl-4-Cyclohexen-1-
IRITONE


yl)3-Buten-2-one


3-Methyl-4-(2,6,6-Trimethyl-2-
GAMMA METHYL IONONE A


Cyclohexen-1-yl)-3-Buten-2-one


5-(2,6,6-Trimethyl-2-Cyclohexen-1-
n-METHYL IONONE


yl)-4-Buten-3-one


3-(HydroxyMethyl)-2-Nonanone
METHYL LAVENDER KETONE


4-Tertiary Pentyl-Cyclohexanone
ORIVONE


4-(para-Hydroxy Phenyl)-2-Butanone
OXYPHENYLON


4-(1,1-Dimethylethyl)-Cyclo-
PARA TERTIARY BUTYL


hexanone
CYCLOHEXANONE


Gamma-Undecalactone
PEACH ALDEHYDE COEUR


Ortho-Tertiary-Butyl-Cyclohexanone
VERDONE









Other suitable materials include, commercially available as a fragrance, but are not limited to:











NAME
COMMON NAME







Para-Methoxy-alpha-Phenyl
ANETHOLE


Propene


Methyl, N-3,7-Dimethyl-7-
AURALVA


Hydroxy Octylidene


Anthinilate


1-Benzyloxy-2-Methoxy-4-
BENZYL ISOEUGENOL


Propenyl Benzene


3,7-Dimethyl-2,6-Octadiene-
CITRALVA


1-Nitrile


3,7-Dimethyl-6-Octenenitrile
CITRONALVA



CITRONAMA


2-Hexyl-1,3-Dioxolane
CITROTONE B


n-Dodecane Nitrile
CLONAL


5-Phenyl-5-Methyl-3-
4-DAMASCOL


Hexanone


n-Decyl Vinyl Ether
DECAVE


n-Decanyl Methyl Ether
DECYL METHYL ETHER


di-n-Butyl Sulfide
DIBUTYL SULFIDE


6-Methyl-2-[4-(4-Methyl-
DIMYRCENE


3-Pentenyl)-3-Cyclohexen-1-


yl]-1,5-Heptadiene


Methyl-n-Hexyl Ether
DIOLA


4-Allyl-2-Methoxy Phenol
EUGENOL


3,7-Dimethyl-2,6-Octadien-
GERANYL ETHYL ETHER


1-Ethoxy


2-(1-Phenylethyl)-1,3-
HYDRATROPIC ALDEHYDE


Dioxolane
CYCLOGLYCOL ACETAL


7-Hydroxy-3,7-Dimethyl,
HYDROXYCITRONELLAL DIMETHYL


Dimethyl Acetal Octanol
ACETAL


Acetyl Diisoamylene
KOAVONE


p-Mentha-1,8-Diene
D-LIMONENE


4-(4,8-Dimethyl-3,7-
MARITIMA


Nonadienyl) Pyridine


Methyl Phenethyl Ether
METHYL PHENYL ETHYL ETHER


3,7-Dimethyl-1,3,6-Octatriene
OCIMENE


1,1-Dimethoxy Octane
OCTACETAL


p-Menth-1-en-8-yl Methyl
ORANGE FLOWER ETHER


Ether


Cyclohexyl Phenethyl Ether
PHENAFLEUR


2-Methyl-2-Pentenoic Acid
STRAWBERIFF


Cycloglycol Acetal-2-Ethyl
SYVERTAL


Hexanal









In addition to fragrance materials, the present invention is also useful to provide a urea complex around materials used as flavors. Suitable favors include but are not limited to the following materials, also commercially available from International Flavors and Fragrances Inc. The flavors include, citronellal, 1,3,5-undecatriene, methyl nonyl acetaldehyde, citronellol, iso-propyl hexate, hexyl iso-pentanoate, octyl formate, cis-6 nonenal, gamma-methyl-gamma-n-hexyl butyrolactone, n-hexanol, ethyl caprylate, ethyl decylate, heptaldehyde glyceral acetal, cis-4-decenal, tetrahydro linalool, gamma decalatone, hexenal, hexanal, methyl-n-amyl ketone, dodecalactone, massoia lactone, 2-decenal, 4-methyl octanoic acid, 4-methyl-nonanoic acid, capric acid, furfuryl octanoate, DITHALFAROME-705, DITHALFAROME-702, 3-methyl-thio-1-hexanol, octyl butyrate, cis-6-nonenal, dipropyl ketone, 2-ethyl-2-octenoate, capryl alcohol, undecyclic C11 aldehyde, ethyl-2,4-decadienoate, 2ethyl hexanoic acid, 3-hexenyl hexate, 2-heptanol, di-iso-butyl ketone, 2-octen-4-one, 2-butyl-2-butenal, octanal, heptanoic acid, 2-octenal, ethyl butyl ketone, amyl vinyl carbinol, citronello, AMARYLLIDE, delta-undecalactone, OXAROME-722, methyl-2-nonenoate, C-18 aldebyde, Peach ALDEHYDE COEUR, gamma dodecalactow, C-12 aldehyde, C-10 aldehyde, para cresyl caprylate, 2,4-decadienal, heptyl acetate, citronellyl formate, methyl caprylate, methyl nonyl ketone, glyceral acetal heptaldehyde, 2-nonenal, 2,4-undecadienal, methyl undecyl ketone, delta tetradecalactone, ethyl-3-hydroxy hexanoate, cis-6-nonenal, methyl heptyl ketone, ethyl amyl ketone, n-butyl caproate, acetyl n-butyryl, diethyl sebacate, lauric alcohol, methyl hexyl ketone, 3-hexanone, octyl alcohol, phenyl ethyl octanoate, methyl nonylate, rhodinyl acetate, ethyl palmitate, allyl caproate, hexyl butyrate, nonyl acetate, ethyl caproate, ethyl heptoate, linoleic acid, methyl laurate, 2,4-decadienal, ethyl myristate, hexyl propyl rioonate, 2-ethyl hexanol, linoleic acid, methyl hexyl acetaldehyde, iso propyl myristate, n-undecane, n-tridecane, n-pentadecane, n-hexadecane, n-heptadecane, phenyl ethyl hexate, JESSAMAL COER, hexyl cinnarnic aldehyde, methyl heptylate, hexyl caproate, C-10 alcohol, oenathic ether, C-9 aldehyde, C-8 aldehyde, C-7 alcohol, decanyl acetate, methyl nonylenate, amyl caproate, ethyl-2-4-decadienoate, methyl heptin carbonate, hexenyl caproate, ethyl-2-octenoate, ethyl undecanoate, methyl octin carbonate, C-6 acetaldehyde, 2-octenal, FLEXOL, caproic acid, n-hexyl-2-methyl butyrate, INTRELEVEN alcohol, C-12 acetaldehyde, allyl caprylate, 3,4-hexanedione, allyl heptoate, iso-butyl caproate, octyl phenyl acetate, BUTTER DERIVED ACIDS, amyl caprylate, ethyl stearate, C-9 alcohol, pelargonic acid, ALDO MO, n-hexyl isobutyrate, caprylic acid, methyl myristate, RHODINYL butyrate, RHODINYL isobutyrate, 2-decenal, trans4-decenoic acid, lauric acid, amyl caproate, EMPLEX PATCO, hexyl caprylate, methyl caproate, beta, gamma hexenyl formate, MIGLYOL-812 DYNAMIT, 2,4-undecadienal, 1-al-2-tridecene, ORRIS aldehyde, acetyl-isovaleryl, VEGACID 1520, cis4-decenal, ethyl oleate, ethyl-24-decadienoate, n-heptyl-isobutyrate, amyl caprylate, octyl isobutyrate, FRUCTOSE A.I.D, magnesium stearate, 2-nonenal, BIOTIN, Vitamin A palmitate.
The molecules that are encapsulated in the present invention can contain double and triple bonds. Those with skill in the art will appreciate that double bonds within the molecules create various isomers. While complexation of both cis and trans isomers are contemplated by the present invention, trans isomers are preferred in the use of the invention.
The present invention is advantageously used in environments where higher pH conditions are found, pHs such as detergents. Additionally problematic with detergents materials is the inclusion of oxidizing agents such as bleach, which cause fragrance materials to prematurely oxidize thereby reducing or eliminating the fragrance.
The urea is complexed by first dissolving in a suitable solvent. Alcohol can be used to dissolve the urea, with methanol being preferred. After the urea is dissolved in the solvent, the dissolution enhanced by heating of the solvent, the flavor or fragrance molecule is added to solution. The molecule, urea and solvent mixture is allowed to cool to room temperature and the solid material containing the urea/molecule is filtered off. If a solid material is not obtained, cooling means is employed such as packing he reactor contents in ice. In an alternative embodiment of the invention the solvent can be evaporated, providing the urea/molecule complex as a residue.
Once the solid material is obtained, the particle size of the complex can be obtained by grinding techniques that are well known in the art, such as hammermill, cryogenic grinding and the like. The present invention allows the flavor/fragrance urea complex to be of similar size to the detergent or bleach compounds that it is incorporated into.
In the present invention a complexation amount of urea is provided to encapsulate the molecule. The amount of urea required will depend on the length of the molecule to be complexed in the urea. Generally, the level of urea required is at least about 5 moles of urea per mole of fragrance or flavor for each atom in the backbone of the molecule. More preferably about 6 to about 10 moles of urea are used, most preferably from about 6.5 to about 9.0 moles of urea per molecule in the backbone of the molecule.
The present invention provides several advantages, including the instant release of the flavor or fragrance molecule from the urea complex upon addition to an aqueous environment. This feature makes the present invention well suited for use in powdered materials including cleaning products such as detergents, bleaches, fabric softeners and other materials that are routinely added to water. Other applications of the invention include air fresheners, bathroom deodorizers, and the like wherein exposure to moisture in the atmosphere will remove the urea thereby releasing the fragrance. In addition, the present invention can be used to protect flavors that are incorporated in powdered drinks that are added to water, or items that are to be swallowed wherein the moisture in the mouth and digestive system will release the material.
In addition, urea is a common, inexpensive material and the complexation of urea with the flavor and fragrance molecules is easily processed once added to water.


The following examples are provided as specific embodiments of the present invention. Other modifications of the invention will be readily apparent to those skilled in the art without departing from the scope or spirit of the invention. As used herein all percentages are weight percent unless otherwise noted and g is understood to be grams.
EXAMPLE 1
Aldehyde/Urea Inclusion Complex
A three liter reaction flask equipped with a reflux condenser, additional funnel was charged with urea (400 g, 6.67 moles) and 1800 grams of methanol. The urea/methanol mixture was heated to reflux to dissolve the urea in the methanol. The heat was removed and ulenic aldehyde (90 g/0.54 moles) was charged to the reactor. The contents of the reactor were allowed to cool to room temperature providing a precipitate. The precipitate material was then filtered and dried providing a urea/ulenic aldehyde complex.
EXAMPLE 2
The efficacy of urea complexed materials was tested in a laundry detergent. The following samples were prepared which contained percarbonate.
The following materials were prepared using a standard detergent base to simulate a commercially available laundry detergent. Samples were prepared using C12 lauric aldehyde, C11 undecyclic aldehyde, as well as urea inclusion complexes of C12 lauric aldebyde, C11 undecyclic aldehyde.
The complexes contained 22% raw material (C12 lauric aldehyde, C11 undecyclic aldehyde). The samples included the following:

    
    
        Detergent base plus 0.2% aldehyde C12 
        Detergent base plus 0.2% aldehyde C12 urea complex
        Detergent base plus 0.2% aldehyde C11 
        Detergent base plus 0.2% aldehyde C11 urea complex
    
    


The samples were stored at 5° C., room temperature and at 37° C. and 70% relative humidity. After two and four weeks of storage, the detergents were used in standard wash tests conducted using 40° C. and 60° C. with the samples stored at 37° C. A full washload (2.8 kilograms) was washed with 80 grams of detergent powder placed inside the washing machine. The samples were tested for their odor after being placed in water.
The following results were obtained:












Storage

Sample and Results










Time
Temperature
C12 v C12 complex
C11 v C11 complex





2 weeks
40° C.
No difference noted
C11 complex performed





better



60° C.
C12 complex
No difference noted




performed better


4 weeks
40° C.
C12 complex
C11 complex performed




performed better
better



60° C.
C12 complex
C11 complex performed




performed better
better









All of the complexed materials performed at least as well as the aldehyde materials. A more significant fragrance was noted with the samples stored for four weeks, especially with the C11 complex washed at 60° C.

## Claims

1. A solid complex consisting of:
a substantially linear flavor or fragrance molecule, the flavor or fragrance molecule having a backbone of at least 5 atoms in length; 
solvent; and 
urea wherein the urea provides a protective complex around the substantially linear flavor or fragrance molecule.

2. A solid complex consisting of:
a substantially linear flavor or fragrance molecule, the flavor or fragrance molecule having a backbone of at least 5 atoms in length; and 
urea wherein the urea provides a protective complex around the substantially linear flavor or fragrance molecule.

3. The solid complex of claim 1 or 2 wherein the urea is provided in an amount of greater than or equal to 5 moles of urea per mole of fragrance or flavor for each atom in the backbone of the flavor or fragrance molecule.

4. The solid complex of claim 1 or 2 wherein the substantially linear flavor or fragrance molecule is selected from the group consisting of aldehyde, ketone and acid.

5. The solid complex of claim 1 or 2 wherein the flavor or fragrance is selected from the group consisting of 1-octanal, 1-nonanal, 1-decanal, 2-methyl decanal, 10-undecen-1-al, 1-undecanal, 1-dodecanal, 2-methyl undecanal methyl nonyl acetaldehyde, alpha-n-amylcinnamic alcohol coeur, 3,7-dimethyl-2-methylene-6-octenal, 2-methyl-3-(para-methoxy phenyl)-propanal, 3,7-dimethyl-2,6-octadien-1-al, 3,7-dimethyl-2,6-octadienal dimethyl acetal, 3,7-dimethyl-6-octen-1-al, 3,7-dimethyl-6-octenyl methyl acetal, 2-heptyl-1,3-dioxolane octanal glycol acetal, para-ethyl-alpha,alpha-dimethyl hydrocinnamaldehyde, 5,9-dimethyl-4,8-decadienal, 6,10-dimethyl-3-oxa-5,9-undecadien-1-al, alpha-n-hexyl cinnamic aldehyde, m-cymene-7-carboxaldehyde, ethyl phenethyl acetal acetaldehyde, phenethyl propyl acetal acetaldehyde, alpha-methyl phenylacetaldehyde, 7-hydroxy-3,7-dimethyl octanal, 10-undecenal, ethyl-cis-3-hexenyl acetal acetaldehyde, 3,7-dimethyl-2,6-octadien-1-al, 4-(4-hydroxy-4-methyl pentyl)-3-cyclohexene-1-carboxaldehyde, 2-methyl-3-phenyl-2-propen-1-al, 2-methyl octanal, 3,7-dimethyl-6-octenyl-oxy-acetaldehyde, 4-(4-methyl-3-pentenyl)-3-cyclohexene-1-carboxaldehyde, alpha-methyl-4- (1-methyl benzene acetaldehyde, dihydro cinnamic acetate, 1-methyl-4-(4-methyl-3-pentenyl)-3-cyclohexene-1-carboxaldehyde, 2,4-dimethyl-3-cyclohexene-1-carboxaldehyde, 3,5,5-trimethyl hexanal, and para-methyl phenoxy acetaldehyde.

6. The solid complex of claim 1 or 2 wherein the flavor or fragrance is selected from the group consisting of para-methoxy acetophenone, 2-n-heptyl cyclopentanone, allyl alpha-ionone, 4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-buten-2-one, 2,3,6-trimethyl cyclohexen-4-yl-1-methyl ketone, 4-(2,4,6-trimethyl-4-cyclohexen-1-yl)3-buten-2-one, 3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, 5-(2,6,6-trimethyl-2-cyclohexen-1-yl)-4-buten-3-one, 3-(hydroxymethyl)-2-nonanone, 4-tertiary pentyl-cyclohexanone, 4-(para-hydroxy phenyl)-2-butanone, 4-(1,1-dimethylethyl)-cyclohexanone, gamma-undecalactone, and ortho-tertiary-butyl-cyclohexanone.

7. The solid complex of claim 1 or 2 wherein the flavor or fragrance is selected from the group consisting of 2-methoxy-4-(propenyl-1)-phenyl acetate, 2-pentyloxy-allyl ester glycolic acid, allyl-n-hexanoate, 3-cyclohexyl propionic acid, allyl ester, propionate-9-decen-1-ol, isoamyl-n-butyrate, alpha-n-amyl cinnamyl acetate, phenyl acetic acid, isoamyl ester, isoamyl propionate, pentyl ortho hydroxy benzoate, 2(3)-methyl butanoic-1-acid, 2(3)-methyl butyl-1-ester, 1-octen-3-yl acetate, 3-phenyl-3-buten-1-yl acetate, para-methoxy benzyl acetate, benzyl-n-butanoate, formic acid benzyl ester, benzyl-3-methyl butyrate, benzyl-n-propanoate, benzyl ortho hydroxy benzoate, 3-phenyl-2-propen-1-yl acetate, 3,7-dimethyl-6-octen-1-yl acetate, 3,7-dimethyl-6-octen-1-yl propionate, 2-tertiary pentyl cyclohexanyl acetate, para-cymen-7-yl acetate, cyclohexanethanyl acetate, 6-methyl-3-isopropenyl cyclohexanyl acetate, cyclohexane methanol, 2,4-dimethyl acetate, 2,6-dimethyl-7-octen-2-yl acetate, alpha,alpha-dimethyl phenethyl acetate, alpha,alpha-dimethyl phenethyl butyrate, alpha,alpha-dimethyl phenethyl isobutyrate, alpha,alpha-dimethyl phenethyl propionate, 3,7-dimethyl-1-octanyl acetate, 2-methyl-4-phenyl-2-butyl acetate, 2-methyl-4-phenyl-2-butyl isobutyrate, ethyl-3-hydroxy butyrate, n-butyric acid ethyl ester, n-hexanoic acid ethyl ester, 3,7-dimethyl-6-octenyl ethyl ester oxalic acid, isovaleric acid ethyl ester, 3-methyl-3-phenyl glycidic acid ethyl ester, 2-methoxy benzoic acid ethyl ester, 3-phenyl glycidic ethyl ester, 4-allyl-2-methoxy phenol acetate, 4-allyl-2-methoxy phenyl phenol acetate, 2,4-dimethyl-3-cyclohexene-1-methanyl acetate, ethyl-2,4-dimethyl-1,3-dioxolane-2-acetate, ethyl-2-methyl-1,3-dioxolane-2-acetate, ethyl-2-hexyl acetoacetate, 3,7-dimethyl-2,6-octadien-1-yl acetate, 3,7-dimethyl-2,6-octadien-1-yl-butyrate, 3,7-dimethyl-2,6-octadien-1-yl formate, 3,7-dimethyl-2,6-octadien-1-yl isobutyrate, 3,7-dimethyl-2,6-octadien-1-yl propionate, isobutyric acid, 2,4-hexadienyl ester, n-hexyl acetate, n-hexyl-ortho-hydroxy benzoate, beta-methyl phenethyl alcohol acetate, 2-furanpropionic acid, isobutyl ester, phenyl acetic acid, 2H-pyran-1-ol, tetrahydro-3-pentyl acetate, 3-butyltetrahydro-5-methyl acetate, ethyl-3-hydroxy-3-phenyl propionate, cis-3-hexenyl methyl carbonate, anthranillic acid, methyl ester, 10-undecenoic acid, 7-octen-2-ol, 2-methyl-6-methylene acetate, 2,6-octadien-1-ol, 3,7-dimethyl formate, 3,7-dimethyl acetate, nonyl alcohol acetate, 2-norpinene-2-ethanol, 6,6-dimethyl acetate, 5,7-octadien-2-ol, 2,6-dimethyl acetate, lauric acid ethyl ester, octanoic acid, p-tolyl ester, 4-methyl benzene methanol acetate, 2-phenoxyethyl isobutyrate, 2-phenoxyethyl propionate, 2-phenyl ethyl acetate, 2-phenyl ethyl benzoate, beta-phenyl ethyl n-butyrate, cinnamic acid, phenethyl ester, phenethyl alcohol formate, beta-phenyl ethyl isobutyrate, 3-pentanol, 3-methyl-1-phenyl acetate, beta-phenyl ethyl phenyl acetate, beta-phenyl ethyl propionate, beta-phenyl ethyl salicylate, dihydro cinnamic acetate, dihydro cinnamic propionate, 2-buten-1-ol-3-methyl acetate, 2-buten-1-ol-3-methyl benzoate, 6-octen-1-ol-3,7-dimethyl acetate, 6-octen-1-ol-3,7-dimethyl butyrate, 6-octen-1-ol-3,7-dimethyl formate, 6-octen-1-ol-3,7-dimethyl isobutyrate, cyclohexane-1-methanol, alpha, 3,3-trimethyl acetate, 9-decen-1-yl acetate, methyl phenyl carbinyl acetate, methyl phenyl carbinyl propionate, 3-cyclohexene-1-methanol, alpha, alpha, 4-trimethyl acetate, 3-octanol, 3,7-dimethyl-2-octanol, 2,6-dimethyl acetate, 3,5,5-trimethyl hexyl acetate, 3,6-dimethyl-beta-resorcyclic acid methyl ester, 2-tertiary-butyl-cyclohexanyl acetate, cis-3-hexenyl acetate, cis-3-hexen-1-yl isobutyrate, para-tertiary-butyl-cyclohexyl acetate, 2-methyl butyl salicylate, and n-amyl salicylate.

8. The solid complex of claim 1 or 2 wherein the flavor or fragrance molecule is selected from the group consisting of 10-undecen-1-ol, alpha-n-amyl cinnamyl alcohol, 1-octen-3-ol, para-methoxy benzyl alcohol, alpha-3,3-trimethyl cyclohexane-1-methanol, para-isopropyl cyclohexanol, 2-ethyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol, 3,7-dimethyl-6-octen-1-ol, phenoxy acetaldehyde, para-cymen-7-ol, 3,7-dimethyl-6-octen-3-ol, 3,7-dimethyl-1-octanol, 2-methyl-4-phenyl-2-butanol, 2,4-dimethyl-3-cyclohexene-1-methanol, 3,7-dimethyl-2,6-octadien-1-ol, o,m,p-methyl phenyl ethanol, 3-hexen-1-ol, beta-methyl phenyl ethyl alcohol, 3,7-dimethyl-1,7-octanediol, alpha-isobutyl phenethyl alcohol, 3,4,5,6,6-pentamethyl-2-heptanol, 2,6-dimethyl heptan-6-ol, 2,6-dimethyl-7-octen-2-ol, 5-(2,6,6-trimethyl-2-cyclohexen-1-yl)-4-penten-3-one, 3-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-3-buten-2-one, 2,6-dimethyl-3,5-octadien-2-ol, 2-methyl-6-methylene-7-octen-2-ol, 3,7-dimethyl-2,6-octadien-1-ol, 2,6-dimethyl-5,7-octadien-2-ol, alpha,alpha-4-trimethyl benzene ethanol, 4-tertiary butyl cyclohexanol, 3-methyl-5-phenyl-1-pentanol, 2-benzyl-m-dioxan-5-ol, 2-phenyl ethyl alcohol, 3-methyl-1-phenyl-3-pentanol, 3,7-dimethyl-6-octen-1-ol, 9-decen-1-ol, alpha,alpha-4-trimethyl-3-cyclohexene-1-methanol, 3,7-dimethyl-3-octanol, 2,6-dimethyl-2-octanol, and 2-tertiary-butyl cyclohexanol.

9. A laundry product that contains the solid complex of claim 1 or 2.

10. A solid food product that contains the solid complex of claim 1 or 2.

11. A solid cleaning product that contains the solid complex of claim 1 or 2.

12. A solid cleaning product consisting essentially of:
a substantially linear flavor or fragrance molecule, the flavor or fragrance molecule having a backbone of at least 5 atoms in length; 
urea wherein the urea provides a protective complex around the substantially linear flavor or fragrance molecule; and 
further contains an oxidizing agent.

13. A method for providing a flavor or fragrance molecule with a protective coating comprising:
providing urea in an amount sufficient to provide a protective coating; 
providing a solvent; 
providing a substantially linear flavor or fragrance molecule having a backbone of greater than or equally to five atoms; 
admixing said urea, solvent and flavor or fragrance molecule; 
removing said solvent and recovering said flavor or fragrance molecule with protective urea coating.

14. The method of claim 13 wherein the flavor or fragrance molecule with the protective urea coating is recovered by filtration.

15. The method of claim 13 wherein the flavor or fragrance molecule with the protective urea coating is recovered by distillation.

16. The process of claim 13 wherein the solvent is an alcohol.

17. The process of claim 16 wherein the alcohol is methanol.