WO2015086522A1 - Automatic dishwasher detergents containing oxazolidine odoriferous substance precursors - Google Patents

Abstract

The invention relates to the use of oxazolidine odoriferous substance precursors, in particular in the form of automatic dishwasher detergents containing said oxazolidine odoriferous substance precursors, for indicating the presence of and/or controlling bad odors in dishwashers. The invention further relates to agents that are for use in dishwashers and contain said oxazolidone compounds as well as to methods for automatically washing dishes using said agents.

Description

 "Automatic dishwashing detergent containing oxazolidine fragrance precursor"

The present invention relates to the use of fragrance precursors in the form of

Oxazolidines for the prevention and / or control of bad odors in

Dishwashing machines, in particular being dishwashing detergents containing these oxazolidine fragrance precursors, the dishwashing detergents themselves, and a machine dishwashing process using these dishwashing detergents.

It is known that automatic dishwashers display problems with odor development after use and longer periods of non-use or larger time intervals between the filling time and the next rinsing. These are perceived by the consumer as unpleasant and have their cause in food residues and / or their bacterial degradation products in the dishwasher, especially the water in

Dishwasher swamp.

Although currently commercially available dishwashing detergents usually contain fragrances, they are not suitable for satisfactorily controlling the bad odors which develop after prolonged non-use of the dishwasher in its interior.

The object of the present invention was to provide compounds for use in automatic dishwashing detergents which provide unpleasant odors in the course of automatic dishwashing and, in particular, during prolonged non-use of the dishwasher

Dishwasher and / or storage of dirty dishes in their interior arise, cover and thereby reduce or even neutralize completely.

It has now been found that perfume precursors in the form of oxazolidines are surprisingly able to cover such malodors effectively over a period of several days of non-use of the dishwasher.

A first aspect of the present invention therefore relates to compositions for use in an automatic dishwashing machine characterized in that they contain at least one oxazolidine precursor compound of a fragrance, in particular a fragrance aldehyde or ketone.

Another aspect of the invention is directed to the use of such an agent for controlling or neutralizing bad odors in a machine

Dishwasher. Yet another aspect relates to automatic dishwashing processes, characterized in that an agent, in particular a machine dishwashing detergent, according to the invention is used.

Finally, the invention also relates to the use of an oxazolidine precursor compound of a fragrance, in particular a fragrance aldehyde or ketone, for controlling or

Neutralization of bad odors in a machine dishwasher.

All amounts stated in connection with the agents described herein are, unless otherwise stated, by weight in each case based on the

Total weight of the agent. Furthermore, such amounts referring to at least one constituent always refer to the total amount of that type of constituent contained in the composition, unless explicitly stated otherwise. That is, such quantities, for example in connection with "at least one

nonionic surfactant ", based on the total amount of nonionic surfactants contained in the middle.

"At least one" as used herein refers to 1 or more, for example 1, 2, 3, 4, 5, 6, 7, 8, 9 or more In the context of components of those described herein

Thus, for example, "at least one nonionic surfactant" means one or more different nonionic surfactants, ie, one or more different types of nonionic surfactants the quantities given to the total amount of the corresponding designated type of ingredient, as already defined above.

Preferred oxazolidine precursors capable of liberating a fragrance aldehyde or fragrance ketone by hydrolysis include compounds of the formula

in which

R is selected from substituted or unsubstituted, branched or linear Ce-24 alk (en) yl, substituted or unsubstituted Ce-24 cycloalk (en) yl, substituted or unsubstituted Ce-24 (hetero) aryl and substituted or unsubstituted Ce-24 heterocyclyl; R is selected from H, substituted or unsubstituted, branched or linear C 1-10 alkyl, substituted or unsubstituted, branched or linear C 2-10 alkenyl, substituted or unsubstituted C 3-15 cycloalk (en) yl, substituted or unsubstituted Ce-is (hetero) aryl and substituted or unsubstituted Ce-24 heterocyclyl, or

 R and R together with the carbon atom to which they are attached form a 3- to 10-membered substituted or unsubstituted cycloalk (en) yl or heterocyclyl ring or a 5-10 membered (hetero) aryl ring;

R ² , R ³ , R ⁴ , R ⁵ and R ^{6 are} independently selected from H, substituted or unsubstituted, branched or linear C 1-10 alkyl, substituted or unsubstituted, branched or linear C 2-10 alkenyl, substituted or unsubstituted C 3-6 alkyl, 15 Cycloalk (en) yl, substituted or unsubstituted Ce-is (hetero) aryl, substituted or unsubstituted Ce-24 heterocyclyl, -OH, - (CH ₂ ) x COR ⁷ , and - (CR ⁰ R) _y (CHR ² CHR ³ O) _z R ¹⁴ , or

in each case two of R ² , R ³ , R ⁴ , R ⁵ and R ⁶ together with the carbon atom (s) to which they are attached are a 3- to 10-membered substituted or unsubstituted cycloalk (en) yl or heterocyclyl ring or a 5-10 membered (hetero) aryl ring, or R ² and R ³ or R ⁴ and R ⁵ together form a carbonyl group;

R ^{7 is} selected from -OH, -OR ⁸ , -N (R ⁹ ) 2, substituted or unsubstituted, branched or linear C 1-22 alkyl, substituted or unsubstituted, branched or linear C 2-22 alkenyl, substituted or unsubstituted C 3-22 Cycloalk (en) yl, substituted or

unsubstituted Ce-24 (hetero) aryl and substituted or unsubstituted Ce-24 heterocyclyl; R ^{8 is} selected from H, substituted or unsubstituted, branched or linear C 1-15 alkyl, substituted or unsubstituted, branched or linear C 2-22 alkenyl, and M, wherein M is a water-soluble cation;

R is selected from H and substituted or unsubstituted, branched or linear C1 is selected ⁹ ₆ alkyl;

R ⁰ , R and R ^{2 are} independently selected from H, -OH and C 1-4 alkyl; or R ⁰ and R together with the carbon atom to which they are attached form a 3- to 10-membered substituted or unsubstituted cycloalk (en) yl or heterocyclyl ring, a 5-10 membered one

Form (hetero) aryl ring or a carbonyl group;

R ³ and R ^{4 are} independently selected from H and C 1-4 alkyl;

x is an integer from 0 to 22;

y is an integer from 1 to 10; and

z is an integer from 1 to 50.

Another preferred embodiment of the oxazolidine precursors capable of releasing a fragrance aldehyde or fragrance ketone by hydrolysis includes compounds of the formula

in which

 R is selected from substituted or unsubstituted, branched or linear Ce-24 alk (en) yl, substituted or unsubstituted Ce-24 cycloalk (en) yl, substituted or unsubstituted Ce-24 (hetero) aryl and substituted or unsubstituted Ce-24 heterocyclyl; R is selected from H, substituted or unsubstituted, branched or linear C3-10 alkyl, substituted or unsubstituted, branched or linear C4-10 alkenyl, substituted or unsubstituted C3-15 cycloalk (en) yl, substituted or unsubstituted Ce-is (hetero -) aryl and substituted or unsubstituted Ce-24 heterocyclyl, or

 R and R together with the carbon atom to which they are attached form a 3- to 10-membered substituted or unsubstituted cycloalk (en) yl or heterocyclyl ring or a 5-10 membered (hetero) aryl ring;

R ² , R ³ , R ⁴ , R ⁵ and R ^{6 are} independently selected from H, substituted or unsubstituted, branched or linear C 3-10 alkyl, substituted or unsubstituted, branched or linear C 4-10 alkenyl, substituted or unsubstituted C 3-10 alkyl, 15 Cycloalk (en) yl, substituted or unsubstituted Ce-is (hetero) aryl, substituted or unsubstituted Ce-24 heterocyclyl, -OH, - (CH ₂ ) x COR ⁷ , and - (CR ⁰ R) _y (CHR ² CHR ³ O) _z R ¹⁴ , or

in each case two of R ² , R ³ , R ⁴ , R ⁵ and R ⁶ together with the carbon atom (s) to which they are attached are a 3- to 10-membered substituted or unsubstituted cycloalk (en) yl or heterocyclyl ring or a 5-10 membered (hetero) aryl ring, or R ² and R ³ or R ⁴ and R ⁵ together form a carbonyl group;

R ^{7 is} selected from -OH, -OR ⁸ , -N (R ⁹ ) 2, substituted or unsubstituted, branched or linear C 3-22 alkyl, substituted or unsubstituted, branched or linear C 4-22 alkenyl, substituted or unsubstituted C 3-22 Cycloalk (en) yl, substituted or

unsubstituted Ce-24 (hetero) aryl and substituted or unsubstituted Ce-24 heterocyclyl; R ^{8 is} selected from H, substituted or unsubstituted, branched or linear C 3-15 alkyl, substituted or unsubstituted, branched or linear C 4-22 alkenyl, and M, wherein M is a water-soluble cation;

R is selected from H and substituted or unsubstituted, branched or linear C3 is selected ⁹ ₆ alkyl;

R ⁰ , R and R ^{2 are} independently selected from H, -OH and C 1-4 alkyl; or R ⁰ and R together with the carbon atom to which they are attached form a 3- to 10-membered substituted or unsubstituted cycloalk (en) yl or heterocyclyl ring, a 5-10 membered one

Form (hetero) aryl ring or a carbonyl group;

R ³ and R ^{4 are} independently selected from H and C 1-4 alkyl;

x is an integer from 0 to 22;

y is an integer from 1 to 10; and

z is an integer from 1 to 50. "Substituted" as used herein in connection with the definition of the oxazolidine compounds means that one hydrogen atom is replaced by another group Suitable groups include, but are not limited to, linear or branched C1-22

Hydrocarbon groups including alkyl, alkenyl, alkynyl (the latter 2-22

Carbon atoms), -OH, -CN, -NO 2, -C (O) H, -C (O) OR ', -C (O) NR'R ", -NR'-C (O) -R", -NR'R ", where R 'and R" are C1-12 linear or branched alkyl.

"Heterocyclyl" refers to heteroalicyclic compounds containing one or more

Double bonds and one or more hetero ring atoms, in particular O, N or S, may contain, but are not aromatic compounds.

"(Hetero) aryl" refers to aryl and heteroaryl compounds, the latter containing one or more hetero ring atoms, especially selected from O, N and S.

In preferred embodiments

(i) R ² and / or R ³ and / or R ^{4 are} hydrogen or C 1-6 alkyl, preferably hydrogen; and or

(ii) R ^{5 is} an alkyl radical, in particular methyl, ethyl or hydroxymethyl; and or

(iii) R ^{6 is} hydrogen or together with R ⁵ forms a ring, in particular one

Oxazolidine.

In preferred embodiments, R is H and R is a group represented by the formula

gives a fragrance aldehyde.

In further preferred embodiments, R and R are not hydrogen, but radicals represented by the formula

result in a fragrance ketone.

The oxazolidine precursors described herein are, in particular, reaction products of a fragrance aldehyde or ketone of the formula:

wherein R and R are as defined above and further provided that in the fragrance aldehydes is RH and in the fragrance ketones R is not H, with a β-aminoalcohol of the formula:

wherein R ³ -R ^{6 are} as defined above.

From these oxazolidine precursor compounds, the fragrance can be released again by hydrolysis. The conditions for the release are the typical ones

Environmental conditions encountered in a machine dishwasher. The release is preferably delayed such that the fragrances are released over a period of several days, in particular of up to 10 days, preferably over a period of 1-5 days.

Although it is preferred that the aldehyde or ketone component is the actual fragrance, in other embodiments it is also possible for the beta-aminoalcohol to be a fragrance. In certain embodiments, both the aldehyde / ketone and the aminoalcohol may be a fragrance.

In various embodiments of the invention, the fragrance aldehyde may be selected from adoxal (2,6, 10-trimethyl-9-undecenal), anisaldehyde (4-methoxybenzaldehyde), cymal (3- (4-isopropylphenyl) -2-methylpropanal), Ethyl vanillin, florhydral (3- (3-isopropylphenyl) butanal]), helional (3- (3,4-methylenedioxyphenyl) -2-methylpropanal), heliotropin, hydroxycitronellal, lauraldehyde, lyral (3- and 4- (4-hydroxy) 4-methylpentyl) -3-cyclohexene-1-carboxaldehyde), methylnonylacetaldehyde, Lilial (3- (4-tert-butylphenyl) -2-methylpropanal), phenylacetaldehyde, undecylenealdehyde, vanillin, 2,6,10-trimethyl-9-undecenal , 3-Dodecene-1-al, alpha-n-amylcinnamaldehyde, melonal (2,6-dimethyl-5-heptenal), 2,4-dimethyl-3-cyclohexene-1-carboxaldehyde (Triplal), 4-methoxybenzaldehyde, benzaldehyde , 3- (4-tert-butylphenyl) -propanal, 2-methyl-3- (para-methoxyphenyl) propanal, 2-methyl-4- (2,6,6-t-ethyl-2 (1) -cyclohexene-1 yl) butanal, 3-phenyl-2-propenal, cis- / trans-3,7-dimethyl-2,6-octadiene-1-al, 3,7-dimethyl-6-octene-1-a l, [(3,7-dimethyl-6-octenyl) oxy] acetaldehyde, 4-isopropylbenzylaldehyde, 1, 2,3,4,5,6,7,8-octahydro-8,8-dimethyl-2-naphthaldehyde, 2,4-dimethyl-3-cyclohexene-1-carboxaldehyde, 2-methyl-3-

(isopropylphenyl) propanal, 1-decanal, 2,6-dimethyl-5-heptenal, 4- (tricyclo [5.2.1.0 (2,6)] decylidene-8) -butanal, octahydro-4,7-methane-1 H-indenecarboxaldehyde, 3-ethoxy-4-hydroxybenzaldehyde, para-ethyl-alpha, alpha-dimethylhydrocinnamaldehyde, alpha-methyl-3,4- (methylenedioxy) -hydrocinnamaldehyde, 3,4-methylenedioxybenzaldehyde, alpha-n-hexylcinnamaldehyde, m-cymene-7-carboxaldehyde, alpha-methylphenylacetaldehyde, 7-hydroxy-3J-dimethyloctanal, undecenal, 2,4,6-trimethyl-3-cyclohexene-1-carboxaldehyde, 4- (3) (4-Methyl-3-pentenyl) -3-cyclohexene-carboxaldehyde, 1-dodecanal, 2,4-dimethylcyclohexene-3-carboxaldehyde, 4- (4-hydroxy-4-methylpentyl) -3-cyclohexene-1 carboxaldehyde, 7-methoxy-3,7-dimethyloctan-1-al, 2-methylundecanal, 2-methyldecanal, 1-nonanal, 1-octanal, 2,6,10-trimethyl-5,9-undecadienal, 2-methyl -3- (4-tert-butyl) propanal, dihydrocinnamaldehyde, 1-methyl-4- (4-methyl-3-pentenyl) -3-cyclohexene-1-carboxaldehyde, 5- or 6-methoxyhexahydro-4,7-methanindane -1- or 2-carboxaldehyde, 3J-dimethyloctan-1-al, 1-undecanal, 10-undecene-1-al, 4-hydroxy-3-methoxybenzaldehyde, 1-methyl-3- (4-methylpentyl) -3 cyclohexenecarboxaldehyde, 7-hydroxy-3J-dimethyl-octanal, trans-4-decenal, 2,6-nonadienal, para-tolylacetaldehyde, 4-methylphenylacetaldehyde, 2-methyl-4- (2,6,6-trimethyl-1-) cyclohexen-1-yl) -2-butenes 1, ortho-methoxycinnamaldehyde, 3,5,6-trimethyl-3-cyclohexene carboxaldehyde, 3,7-dimethyl-2-methylene-6-octenal, phenoxyacetaldehyde, 5,9-dimethyl-4,8-decadienal, peonyaldehyde (6, 10-dimethyl-3-oxa-5,9-undecadien-1-al), hexahydro-4,7-methanindan-1-carboxaldehyde, 2-methyloctanal, alpha-methyl-4- (1-methylethyl) -benzylacetaldehyde, 6, 6-dimethyl-2-norpinen-2-propionaldehyde, para-methylphenoxyacetaldehyde, 2-methyl-3-phenyl-2-propen-1-al, 3,5,5-trimethylhexanal, hexahydro-8,8-dimethyl-2 naphthaldehyde, 3-propylbicyclo [2.2.1] hept-5-en-2-carbaldehyde, 9-decenal, 3-methyl-5-phenyl-1-pentanal, methylnonylacetaldehyde, hexanal, trans-2-hexenal, and mixtures thereof.

Preferred aldehydes include, without limitation, lilial, helional, anisaldehyde,

Cyclamenaldehyde, Triplal, Melonal, Methylundecanal, Undecanal, Nonanal and Octanal.

Suitable ketones include, but are not limited to, methyl-beta-naphthyl ketone, muskedanone-1-one (2,3,3,6,6-hexahydro-1,1,3,3,3-pentamethyl-4H-inden-4-one). , Tartalide (6-acetyl-1,1,1,4,4,7-hexamethyltetralin), alpha-damascone, beta-damascone, delta-damascone, iso-damascone, damascenone, methyldihydrojasmonate, menthone, carvone, camphor, koavon

(3,4,5,6,6-pentamethylhept-3-en-2-one), fenchone, alpha-ionone, beta-ionone, gamma-methyl-ionone, fleuramon (2-heptylcyclopentanone), dihydrojasmon, cis-jasmone , 1 - (1, 2,3,4,5,6,7,8-octahydro-2,3,8,8-tetramethyl-2-naphthalenyl) -ethan-1-one and isomers thereof, methyl cedryl ketone, acetophenone, Methylacetophenone, para-methoxyacetophenone, methyl-beta-naphthyl ketone, benzylacetone, benzophenone, para-hydroxyphenylbutanone, celery ketone (3-methyl-5-propyl-2-cyclohexenone), 6-isopropyldeca-hydro-2-naphthone, dimethyloctenone, Frescomenthe (2-butan-2-ylcyclohexan-1-one), 4- (1-ethoxyvinyl) -3,3,5,5-tetramethylcyclohexanone, methylheptenone, 2- (2- (4-methyl-3-cyclohexene-1) yl) propyl) cyclopentanone, 1 - (p-menthene-6 (2) yl) -1-propanone, 4- (4-hydroxy-3-methoxyphenyl) -2-butanone, 2-acetyl-3,3- dimethylnorbornane, 6,7-dihydro-1,1,3,3,3-pentamethyl-4 (5H) in-danone, 4-damascol, dulcinyl (4- (1,3-benzodioxol-5-yl) butane-2 -one), hexalon (1- (2,6,6-trimethyl-2-cyclohexene-1-yl) -1, 6-heptadien-3-one), isocyclone E (2-ace tonaphthon- 1, 2,3,4,5,6,7,8-octahydro-2,3,8,8-tetramethyl), methylnonyl ketone, methylcyclocitron, methyllavedelketone, orivone (4-tert-amylcyclohexanone), 4-tert-butyl cyclohexanone , Delphon (2-pentyl cyclopentanone), Muscon (CAS 541-91-3), Neobutenone (1- (5,5-dimethyl-1-cyclohexenyl) pent-4-en-1-one), Plicaton (CAS 41724-19-0), Velouton (2,2,5-trimethyl-5-pentylcyclopentan-1-one), 2,4,4,7-tetramethyl-oct-6-en-3-one, tetrameran (6, 10-dimethylundecen-2-one) and mixtures thereof.

In addition, as fragrance aldehydes and / or fragrance ketones basically all the usual fragrance aldehydes and / or fragrance ketones can be used, which are used in particular for bringing about a pleasant sense of smell in humans. Such perfume aldehydes and / or perfume ketones are known to the person skilled in the art and are also described in the patent literature, for example in US 2003/0158079 A1, paragraphs [0154] and [0155]. For other suitable fragrances, see Steffen Arctander, Aroma Chemicals Volume 1 and Volume 2 (published 1960 and 1969, reissue 2000, ISBN: 0-931710-37-5 and 0-931710-38-3).

For the preparation of the compounds to be used according to the invention, a compound of the general formula of the formula:

wherein R ³ -R ^{6 are} as defined above, be reacted with aldehydes, ketones or mixtures of ketones and aldehydes with ring closure. The reaction is preferably carried out in a suitable solvent or in situ. Suitable solvents are, for example, aromatic hydrocarbons such as toluene. The reaction is preferably carried out at a temperature in the range of 80 to 150 ° C, more preferably 100 to 140 ° C. For example, the aminoalcohol having the general formula shown above under a nitrogen atmosphere together with the desired ketone and / or aldehyde in the solvent. Then the reaction mixture is heated. Often, it is then heated under reflux at the water separator. The resulting reaction product is isolated by conventional methods and optionally purified.

Surprisingly, the oxazolidine compounds used show the property

Bad odors that develop in the interior of automatic dishwashers during prolonged non-use or storage of soiled dishes, at least partially cover and mitigate the perceived by people as unpleasant odors or even to neutralize. The oxazolidine precursors described above are preferably used in the compositions according to the invention as mixtures with at least one further perfume.

The other fragrances which may optionally be included in the compositions are not particularly limited. Thus, individual fragrance compounds of natural or synthetic origin, e.g. of the type of esters, ethers, aldehydes, ketones, alcohols and hydrocarbons. Fragrance compounds of the ester type are known e.g.

Benzyl acetate, phenoxyethyl isobutyrate, p-tert-butylcyclohexyl acetate, linalyl acetate,

Dimethylbenzylcarbinylacetate (DMBCA), phenylethylacetate, benzylacetate,

Ethylmethylphenylglycinate, allylcyclohexylpropionate, styrallylpropionate, benzylsalicylate,

Cyclohexyl salicylate, floramate, melusate and jasmacyclate. The ethers include, for example, benzyl ethyl ether and ambroxane, to the aldehydes the above-mentioned e.g. the linear alkanals having 8-18 C atoms, citral, citronellal, citronellyloxyacetaldehyde, cyclamenaldehyde (3- (4-propan-2-ylphenyl) butanal), lilial and bourgeonal, to the ketones e.g. the alcohols, anethole, citronellol, eugenol, geraniol, linalool, phenylethyl alcohol and terpineol, the hydrocarbons mainly include terpenes such as limonene and pinene. Preferably, however, mixtures of different fragrances are used, which together produce an attractive fragrance.

 The compositions of this invention may also contain natural fragrance mixtures such as are available from vegetable sources, e.g. Pine, citrus, jasmine, patchouly, rose or ylang-ylang oil. Also suitable are Muskateller sage oil, camomile oil, clove oil, lemon balm oil, mint oil, cinnamon leaf oil, lime blossom oil, juniper berry oil, vetiver oil, olibanum oil, galbanum oil and

Labdanum oil and orange blossom oil, neroli oil, orange peel oil and sandalwood oil. Further conventional fragrances which may be present in the compositions according to the invention in the context of the present invention are, for example, the essential oils such as angelica root oil, aniseed oil, arnica blossom oil, basil oil, Bay oil, Champacablütenöl, Edeltannöl, Edeltannenzapfen oil, Elemiöl, Eucalyptusöl, Fennelöl, Fichtennadelöl, Galbanumöl, Geranium oil, ginger grass oil, guaiac wood oil, gurdy balm oil, helichrysum oil, ho oil, ginger oil, iris oil, cajeput oil, calamus oil, chamomile oil, camphor oil, kanga oil, cardamom oil, cassia oil, pine oil, kopaivabalam oil, coriander oil, spearmint oil, caraway oil, cumin oil, lavender oil, lemongrass oil, Lime oil,

Tangerine oil, Melissa oil, Musk grain oil, Myrrh oil, Clove oil, Neroli oil, Niaouli oil, Olibanum oil, Origanum oil, Palmarosa oil, Patchouli oil, Peru balsam oil, Petitgrain oil, Pepper oil, Peppermint oil, Pimento oil, Pine oil, Rose oil, Rosemary oil, Sandalwood oil, Celery oil, Spik oil, Star aniseed oil, Turpentine oil, Thuja oil, thyme oil, verbena oil, vetiver oil, juniper berry oil, wormwood oil, wintergreen oil, ylang-ylang oil, hyssop oil, cinnamon oil, cinnamon oil, citronella oil, lemon oil and cypress oil and ambrettolide, ambroxane, a-amylcinnamaldehyde, anethole, anisaldehyde, anisalcohol, anisole, anthranilate,

Acetophenone, benzylacetone, benzaldehyde, ethyl benzoate, benzophenone, benzyl alcohol, Benzyl acetate, benzyl benzoate, benzyl formate, benzyl valerate, borneol, bornyl acetate, Boisambrene forte, α-bromostyrene, n-decyl aldehyde, n-do decyl aldehyde, eugenol, eugenol methyl ether, eucalyptol, farnesol, fenchone, fenchyl acetate, geranyl acetate, geranyl formate, heliotropin,

Methyl heptincarboxylate, heptaldehyde, hydroquinone dimethyl ether, hydroxycinnamaldehyde, hydroxycinnamyl alcohol, indole, Iran, isoeugenol, isoeugenolmethyl ether, isosafrole, jasmon, camphor, karvakrol, karvon, p-cresol methyl ether, coumarin, p-methoxy-acetophenone, methyl n-amyl ketone, methyl anthranilate, p-methylacetophenone, methylchavikole, p-methylquinoline, methyl-naphthyl ketone, methyl-n-nonylacetaldehyde, methyl n-nonyl ketone, muscone, beta-naphthol ethyl ether, beta-naphthol methyl ether, nerol, n-nonylaldehyde, nonyl alcohol, n-nonyl alcohol Octyl-aldehyde, p-oxy-acetophenone, pentadecanolide, β-phenylethyl alcohol, phenylacetic acid, pulegone, safrole,

Salicylic acid isoamyl ester, salicylic acid methyl ester, salicylic acid hexyl ester,

Salicylic acid cyclohexyl esters, santalol, sandelice, skatole, terpineol, thymes, thymol, troenan, γ-undelactone, vanillin, veratrumaldehyde, cinnamaldehyde, cinnamyl alcohol, cinnamic acid, cinnamic acid ethyl ester, cinnamic acid benzyl ester, diphenyloxide, limonene, linalool, linalyl acetate and propionate, melusate, menthol, menthone , Methyl-n-heptenone, pinene, phenylacetaldehyde, terpinyl acetate, citral, citronellal and mixtures thereof.

However, it is preferred that the oxazolidine fragrance precursors be used with the corresponding aldehydes and / or ketones. According to a preferred embodiment of the invention, such compositions are characterized in that the molar ratio of perfume aldehyde and / or perfume ketone to the corresponding oxazolidine fragrance precursor 20: 1 to 1: 20, preferably 10: 1 to 1: 10, advantageously 5 : 1 to 1: 5, more preferably 3: 1 to 1: 3, even more advantageously 2: 1 to 1: 2 and in particular 1, 2: 1 to 1: 1, 2. It has been found that such mixtures of perfume aldehyde and / or perfume ketone and corresponding oxazolidine perfume precursors produce particularly good results in the sense of this invention, in particular with regard to stability and fragrance of the compositions, as well as with regard to the fragrance of it treated dishwashers.

The agent may in principle comprise further constituents, in particular further fragrances, as defined above, and / or solvents. Also typical perfume compositions may include adjuvants such as antioxidants (generic term for compounds of various chemical structure which inhibit or prevent undesirable changes due to oxygenation and other oxidative processes in the compositions to be protected), preservatives (collective term for compounds of various chemical types) Structure that inhibit or prevent undesirable changes in the compositions to be protected due to the action of microorganisms or microorganisms) or eg fixatives. Fixatives, which are optionally used as auxiliaries, are substances that can give fragrances increased resistance. As fixers are particularly suitable are the so-called self-fixatives, which retain their odor for a long time without hindering other, more volatile components in their odor development, in particular the synthetic musks, furthermore the so-called pseudofixates as low-odor substances, such as diethylene glycol methyl ether, and further by Adsorber fixing fixatives, such as in particular extracts of Labdanum, Styrax, Tolubalsam, Benzoin, Iris, Oakmoss or Opopanax etc ..

Suitable optional solvents are, in particular, those customary in perfumery, such as preferably dipropylene glycol, diethylene glycol, isopropyl myristate, ethanol, propylene glycol and / or castor oil. Other suitable optional adjuvants are e.g. Complexing agent.

The agents of the invention may be, for example, automatic dishwashing detergents, automatic dishwashing detergents, rinse aids or

Perfume compositions for automatic dishwashers act.

The agents of the invention, in particular the dishwashing perfume compositions ("dishwashing deodorant") may, in certain embodiments, consist essentially only of perfume aldehyde and / or perfume ketone and an oxazolidine corresponding to exactly this perfume aldehyde and / or perfume ketone Perfume precursor which is capable of releasing the same perfume aldehyde or fragrance ketone and which satisfies the above formula. "Substantially" means that these agents are>

90 wt .-%, preferably> 95 wt .-% and in particular to> 99 wt .-% or too

100 wt .-% consists of the above components. Such agents may contain the at least one oxazolidine precursor compound of a fragrance based on the total weight of the agent in amounts up to 30% by weight, especially up to 25% by weight.

In general, the agents described herein may include the at least one

 Oxazolidine precursor compound of a fragrance based on the total weight of the agent in amounts of from 0.01 to 30% by weight, especially from 0.01 to 25% by weight, more preferably from 0.01 to 10% by weight.

Some agents, for example dishwashing detergents, dishwashing detergents or rinse aids, contain the at least one oxazolidine precursor compound of a perfume, based on the total weight of the agent, usually in amounts of from 0.01 to 2% by weight, in particular from 0.05 to 1% by weight. more preferably from 0.1 to 0.5% by weight.

The compositions according to the invention, in particular automatic dishwashing agents, can be solid or liquid in nature and, in particular, as powdered solids, in a recompressed state

Particle form, as homogeneous solutions or suspensions. In a preferred Embodiment of the invention, the means, in particular the automatic dishwashing detergent, in a pre-portioned form. In a further preferred embodiment of the invention, such a composition has several spatially separate compositions, whereby it is possible to separate incompatible ingredients, or

To offer compositions in combination, which are used at different times in the dishwasher. This is particularly advantageous when the agents are in pre-portioned form. At least one of the compositions is solid and / or at least one of the compositions is liquid, wherein the oxazolidine fragrance precursors are present in at least one of the compositions, but may also be present in several compositions.

The agents according to the invention preferably comprise at least one further constituent, in particular at least two further constituents selected from the group consisting of builders, surfactants, polymers, bleaches, bleach activators, bleach catalysts, in particular catalysts based on manganese or cobalt, enzymes, corrosion inhibitors and glass corrosion inhibitors, Disintegration aids and perfume carriers.

The following describes possible ingredients which can advantageously be used in the compositions according to the invention, in particular the automatic dishwasher detergents. Even if reference is made below to dishwashing detergent in particular, it is clear to the person skilled in the art that similar ingredients can also be used in other of the abovementioned agents. For example, rinse aids typically typically contain surfactants, for example, those described below. The person skilled in the art therefore readily understands that the corresponding disclosure in connection with automatic dishwashing detergents can also readily be applied to other means.

For example, builders can be used. The builders include, in particular, the zeolites, silicates, carbonates, organic cobuilders and, where there are no ecological prejudices against their use, also the phosphates.

Preferably, crystalline layered silicates of the general formula

NaMSix02x + i ^■ y H2O are used, wherein M is sodium or hydrogen, x is a number from 1, 9 to 22, preferably from 1: 9 to 4, wherein particularly preferred values for x being 2, 3 or 4, and y a number from 0 to 33, preferably from 0 to 20 stands. The crystalline layered silicates of the formula NaMSix02x + i ^■ y H2O, for example, by Clariant GmbH (Germany) under the trade name Na-SKS. Examples of these silicates are Na-SKS-1 (Na ₂ Si ₂ 2045 ^· x H ₂ O, kenyaite), Na-SKS-2 (Na ₂ Si ₄ O ^{29 ·} x H ₂ O, magadiite), Na-SKS-3 (Na ₂ Si ₈ 0i7 ^■ x H2O) or Na-SKS-4 (Na ₂ Si ₄ 09 ^■ x H2O, makatite). For the purpose of present invention is particularly suitable are crystalline layer silicates with the formula NaMSix02x + i ^■ H2O y, in which x stands for 2 h. In particular, both ß- and

δ-sodium Na2Si20s ^■ y H2O and further especially Na-SKS-5 (a-Na2Si20s), Na-SKS-7 _{(.beta.-Na2 Si2} 05, natrosilite), Na-SKS-9 (NaHSi ₂ 0 ₅ ^■ H2O), Na-SKS-10 (NaHSi ₂ 0 ₅ ^■ 3 H2O, kanemite), Na-SKS-1 (1 t-Na ₂ Si ₂ 05) and Na-SKS-13 (NaHSi ₂ 0 _5), but especially Na-SKS-6 (5-Na ₂ Si ₂ 05) is preferred.

Machine dishwashing detergents preferably contain a weight proportion of crystalline layered silicate of formula NaMSix02x + i y ^■ H2O of 0.1 to 20 wt .-%, preferably from 0.2 to 15 wt .-% and in particular from 0.4 to 10 wt. -%, in each case based on the total weight of these funds.

It is also possible to use amorphous sodium silicates having a modulus Na 2 O: SiO 2 of from 1: 2 to 1: 3.3, preferably from 1: 2 to 1: 2.8 and in particular from 1: 2 to 1: 2.6, which are preferably delayed in dissolution and secondary wash properties. The dissolution delay compared to conventional amorphous sodium silicates can in various ways, for example by surface treatment, compounding, compaction / compaction or by

Overdrying caused. In the context of this invention, the term "amorphous" is understood to mean that the silicates do not yield sharp X-ray reflections typical of crystalline substances in X-ray diffraction experiments, but at most one or more maxima of the scattered X-rays having a width of several degrees of diffraction angle , cause.

In the context of the present invention, it is preferred that these silicate (s), preferably alkali metal silicates, particularly preferably crystalline or amorphous Alkalidisilikate, in the compositions in amounts of from 3 to 60 wt .-%, preferably from 8 to 50 wt. % and in particular from 20 to 40 wt .-%, each based on the weight of the automatic dishwashing detergent are included.

Of course, a use of the well-known phosphates as builders is possible, unless such use should not be avoided for environmental reasons. Among the large number of commercially available phosphates, the alkali metal phosphates, with particular preference of pentasodium or Pentakaliumtriphosphat (sodium or

Potassium tripolyphosphate) in the detergent or cleaning industry the greatest importance.

Alkalimetallphosphate is the summary term for the alkali metal (especially sodium and potassium) salts of various phosphoric acids in which one

Metaphosphoric acids (HP03) n and orthophosphoric acid H3PO4 can distinguish in addition to higher molecular weight representatives. The phosphates combine several advantages: they act as Alkaline carriers, prevent limescale deposits on machine parts or Kalkinkrustationen in tissues and also contribute to the cleaning performance.

Technically important phosphates are the pentasodium triphosphate, NasPsO-io

(Sodium tripolyphosphate) and the corresponding potassium salt pentapotassium triphosphate, K5P3O10 (potassium tripolyphosphate). Preferably used according to the invention

Sodium potassium tripolyphosphates.

If phosphates are used as washing or cleaning substances in machine dishwashing detergent in the present application, preferred agents comprise this phosphate (s), preferably alkali metal phosphate (s), particularly preferably pentasodium or pentapotassium triphosphate (sodium or potassium tripolyphosphate ), in amounts of 5 to 80 wt .-%, preferably from 15 to 75 wt .-% and in particular from 20 to 70 wt .-%, each based on the weight of the automatic dishwashing detergent.

Further builders are the alkali carriers. Examples of alkali carriers are

Alkali metal hydroxides, alkali metal carbonates, alkali metal bicarbonates, alkali metal sesquicarbonates, the said alkali metal silicates, alkali metal silicates, and mixtures of

aforementioned substances, wherein for the purposes of this invention preferably the alkali metal carbonates, in particular sodium carbonate, sodium bicarbonate or sodium sesquicarbonate can be used. Particularly preferred is a builder system comprising a mixture of tripolyphosphate and sodium carbonate. Also particularly preferred is a builder system comprising a mixture of tripolyphosphate and sodium carbonate and sodium disilicate. Because of their low chemical compatibility with the other ingredients of dishwasher detergents in comparison with other builders, the optional alkali metal hydroxides are preferably only in small amounts, preferably in amounts below 10 wt .-%, preferably below 6 wt .-%, more preferably below 4 % By weight and in particular below 2% by weight, in each case based on the total weight of the automatic dishwashing detergent. Particularly preferred are agents which, based on their total weight, contain less than 0.5% by weight and in particular no alkali metal hydroxides.

Particularly preferred is the use of carbonate (s) and / or bicarbonate (s), preferably alkali metal carbonate (s), more preferably sodium carbonate, in amounts of 2 to 50 wt .-%, preferably from 5 to 40 wt .-% and in particular from 7.5 to 30 wt .-%, each based on the weight of the automatic dishwashing detergent. Particular preference is given to compositions which, based on the weight of the automatic dishwashing agent, are less than 20% by weight, preferably less than 17% by weight, preferably less than 13% by weight and in particular less than 9% by weight of carbonate (s) and / or hydrogencarbonate (s), preferably alkali metal carbonate (s), particularly preferably sodium carbonate.

Particularly suitable organic co-builders are polycarboxylates / polycarboxylic acids, polymeric polycarboxylates, aspartic acid, polyacetals, dextrins, further organic cobuilders and phosphonates. These classes of substances are described below.

Useful organic builders are, for example, the polycarboxylic acids which can be used in the form of the free acid and / or their sodium salts, polycarboxylic acids meaning those carboxylic acids which carry more than one acid function. For example, these are citric acid, adipic acid, succinic acid, glutaric acid, malic acid, tartaric acid,

Maleic acid, fumaric acid, sugar acids, nitrilotriacetic acid (NTA), provided such use is not objectionable for environmental reasons, and mixtures thereof. In addition to their builder effect, the free acids typically also have the property of a

Acidification and thus also serve to set a lower and milder pH of the automatic dishwashing detergent. In particular, here are citric acid,

Succinic acid, glutaric acid, adipic acid, gluconic acid and any mixtures thereof.

The use of citric acid and / or citrates in these compositions has proved to be particularly advantageous for the cleaning and rinsing performance of agents according to the invention. Therefore, according to the invention, preference is given to automatic dishwasher detergents, characterized in that the automatic dishwashing agent contains citric acid or a salt of citric acid and the weight proportion of citric acid or of the salt of citric acid is preferably more than 10% by weight, preferably more than 15% by weight and in particular between 20 and 40 wt .-% is.

Another important class of phosphate-free builders are aminocarboxylic acid and / or its salts. Particularly preferred members of this class are

Methylglycinediacetic acid (MGDA) or its salts and glutamic diacetic acid (GLDA) or its salts or ethylenediaminediacetic acid or its salts (EDDS). The content of these

Aminocarboxylic acids or their salts may, for example, between 0, 1 and 15 wt .-%, preferably between 0.5 and 10 wt .-% and in particular between 0.5 and 6 wt .-% make up. Aminocarboxylic acids and their salts can be used together with the abovementioned builders, in particular also with the phosphate-free builders. Other suitable builders are polymeric polycarboxylates, for example the Alka II metal salts of polyacrylic acid or polymethacrylic acid, for example those having a relative molecular mass of 500 to 70,000 g / mol.

Suitable polymers are, in particular, polyacrylates which preferably have a molecular weight of 2,000 to 20,000 g / mol. Because of their superior solubility, the short-chain polyacrylates, which have molar masses of from 2000 to 10000 g / mol, and particularly preferably from 3000 to 5000 g / mol, may again be preferred from this group.

Also suitable are copolymeric polycarboxylates, in particular those of acrylic acid with methacrylic acid and of acrylic acid or methacrylic acid with maleic acid. Copolymers of acrylic acid with maleic acid which contain 50 to 90% by weight of acrylic acid and 50 to 10% by weight of maleic acid have proven to be particularly suitable. Their relative molecular weight, based on free acids, is generally from 2000 to 70000 g / mol, preferably from 20,000 to 50,000 g / mol and in particular from 30,000 to 40,000 g / mol.

The (co) polymeric polycarboxylates can be used either as a powder or as an aqueous solution. The content of automatic dishwashing detergents on (co) polymers

Polycarboxylates is preferably 0.5 to 20 wt .-% and in particular 3 to 10 wt .-%.

To improve the water solubility, the polymers may also contain allylsulfonic acids such as allyloxybenzenesulfonic acid and methallylsulfonic acid as a monomer.

Further preferred copolymers are those which are used as monomers acrolein and

Acrylic acid / acrylic acid salts or acrolein and vinyl acetate.

In addition, all compounds capable of forming complexes with alkaline earth ions can be used as builders.

The compositions of the invention may contain surfactants, wherein the nonionic, the anionic, the cationic and the amphoteric surfactants are counted among the group of surfactants.

As nonionic surfactants, it is possible to use all nonionic surfactants known to the person skilled in the art. Suitable nonionic surfactants are, for example, alkyl glycosides of the general formula RO (G) x in which R is a primary straight-chain or methyl-branched, in particular 2-methyl-branched aliphatic radical having 8 to 22, preferably 12 to 18 carbon atoms and G is the symbol that is for a glycose unit with 5 or 6 C atoms, preferably for glucose. The degree of oligomerization x, which indicates the distribution of monoglycosides and oligoglycosides, is an arbitrary number between 1 and 10; preferably x is 1, 2 to 1, 4.

Another class of preferred nonionic surfactants which can be used either as the sole nonionic surfactant or in combination with other nonionic surfactants are alkoxylated, preferably ethoxylated or ethoxylated and propoxylated

Fatty acid alkyl esters, preferably having 1 to 4 carbon atoms in the alkyl chain.

Nonionic surfactants of the amine oxide type, for example N-cocoalkyl-N, N-dimethylamine oxide and N-tallowalkyl-N, N-dihydroxyethylamine oxide, and the fatty acid alkanolamides may also be suitable. The amount of these nonionic surfactants is preferably not more than that of the ethoxylated fatty alcohols, especially not more than half thereof.

Further suitable surfactants are the polyhydroxy fatty acid amides known as PHFA.

Low-foaming nonionic surfactants can be used as preferred surfactants. With particular preference, the automatic dishwashing detergents contain nonionic surfactants from the group of the alkoxylated alcohols. The nonionic surfactants used are preferably alkoxylated, advantageously ethoxylated, in particular primary, alcohols having preferably 8 to 18 carbon atoms and on average 1 to 12 moles of ethylene oxide (EO) per mole of alcohol, in which the alcohol radical can be linear or preferably methyl-branched in the 2-position or linear and methyl-branched radicals in the mixture can contain, as they are usually present in Oxoalkoholresten. In particular, however, alcohol ethoxylates with linear radicals of alcohols of natural origin having 12 to 18 carbon atoms, for example of coconut, palm, tallow or oleyl alcohol, and on average 2 to 8 moles of EO per mole of alcohol are preferred. Preferred ethoxylated alcohols include, for example Ci2-i4-alcohols with 3 EO or 4 EO, C9-n-alcohol with 7 EO, Ci3-is alcohols containing 3 EO, 5 EO, 7 EO or 8 EO, C ₂ -i8 Alcohols with 3 EO, 5 EO or 7 EO and mixtures of these, such as mixtures of Ci2-i4-alcohol with 3 EO and Ci2-is-alcohol with 5 EO. The stated degrees of ethoxylation represent statistical averages, which may correspond to a particular product of an integer or a fractional number. Preferred alcohol ethoxylates have a narrow homolog distribution (narrow rank ethoxylates, NRE). In addition to these nonionic surfactants, fatty alcohols with more than 12 EO can also be used. Examples include tallow fatty alcohol with 14 EO, 25 EO, 30 EO or 40 EO.

Particular preference is given to nonionic surfactants which have a melting point above

Have room temperature. Nonionic surfactant (s) having a melting point above 20 ° C, preferably above 25 ° C, more preferably between 25 and 60 ° C and in particular between 26.6 and 43.3 ° C, is / are particularly preferred.

Preferably used surfactants come from the groups of alkoxylated nonionic surfactants, in particular the ethoxylated primary alcohols.

Anionic surfactants can also be used as a component of automatic dishwashing detergents. These include in particular alkylbenzenesulfonates, (fatty) alkyl sulfates, (fatty) alkyl ether sulfates and alkanesulfonates. The content of the anionic surfactant is usually 0 to 10% by weight.

Instead of the surfactants mentioned or in conjunction with them, it is also possible to use cationic and / or amphoteric surfactants. As cationic active substances, for example, cationic compounds of the following formulas can be used:

 Ri

 U

Ri-N- (CH ₂ ) _n -T-R2

(CH ₂ ) _n -T-R2

wherein each R group is independently selected from C 1-6 alkyl, alkenyl or hydroxyalkyl groups; each R ^{2 group is} independently selected from Cs-28 alkyl or alkenyl groups; R ³ = R or (CH ₂ ) _n -TR ² ; R ⁴ = R or R ² or (CH ₂ ) nTR ² ; T = - CH 2 -, -O-CO- or -CO-O- and n is an integer from 0 to 5.

In automatic dishwashing detergents, the content of cationic and / or amphoteric surfactants is preferably less than 6% by weight, preferably less than 4% by weight, very particularly preferably less than 2% by weight and in particular less than 1% by weight. %. Machinery

Dishwashing detergents containing no cationic or amphoteric surfactants are particularly preferred. The group of polymers includes, in particular, the washing or cleaning-active polymers, for example the rinse aid polymers and / or polymers which act as softeners. In general, cationic, anionic and amphoteric polymers can be used in machine dishwashing detergents in addition to nonionic polymers.

"Cationic polymers" for the purposes of the present invention are polymers which carry a positive charge in the polymer molecule, which can be realized, for example, by (alkyl) ammonium groups or other positively charged groups present in the polymer chain quaternized cellulose derivatives, the polysiloxanes with quaternary groups, the cationic guar derivatives, the polymeric dimethyldiallylammonium salts and their copolymers with esters and amides of acrylic acid and methacrylic acid, the copolymers of vinylpyrrolidone with quaternized derivatives of dialkylaminoacrylate and methacrylate, the vinylpyrrolidone-methoimidazolinium chloride Copolymers, the quaternized polyvinyl alcohols or the INCI names

Polyquaternium 2, Polyquaternium 17, Polyquaternium 18 and Polyquaternium 27 indicated polymers.

For the purposes of the present invention, "amphoteric polymers" furthermore have, in addition to a positively charged group in the polymer chain, negatively charged groups or monomer units, for example, these may be carboxylic acids, sulfonic acids or phosphonic acids.

Preferred usable amphoteric polymers are from the group of

Alkylacrylamide / acrylic acid copolymers, the alkylacrylamide / methacrylic acid copolymers, the alkylacrylamide / methylmethacrylic acid copolymers, the alkylacrylamide / acrylic acid / alkylaminoalkyl (meth) acrylic acid copolymers, the alkylacrylamide / methacrylic acid / alkylaminoalkyl (meth) acrylic acid copolymers , the alkylacrylamide / methylmethacrylic acid / alkylaminoalkyl (meth) acrylic acid copolymers, the alkylacrylamide / alkymethacrylate / alkylaminoethylmethacrylate / alkylmethacrylate copolymers and the copolymers of unsaturated carboxylic acids, cationically derivatized unsaturated carboxylic acids and optionally further ionic or nonionic monomers.

Preferred zwitterionic polymers are from the group of acrylamidoalkyl trialkyl ammonium chloride / acrylic acid copolymers and their alkali metal and ammonium salts, the acrylamidoalkyltrialkylammonium chloride / methacrylic acid copolymers and their alkali metal and ammonium salts and the Methacroylethylbetain / methacrylate copolymers. In a particularly preferred embodiment of the present invention, the polymers are in prefabricated form. For the preparation of the polymers is suitable inter alia

 the encapsulation of the polymers by means of water-soluble or water-dispersible coating compositions, preferably by means of water-soluble or water-dispersible natural or synthetic polymers;

 the encapsulation of the polymers by means of water-insoluble, fusible

 Coating compositions, preferably by means of water-insoluble coating agents from the group of waxes or paraffins having a melting point above 30 ° C;

 the co-granulation of the polymers with inert support materials, preferably with

 Support materials from the group of washing or cleaning-active substances, particularly preferably from the group of builders (builders) or cobuilders.

Machine dishwashing detergents preferably contain the abovementioned cationic and / or amphoteric polymers in amounts of from 0.01 to 10% by weight, based in each case on the total weight of the automatic dishwashing detergent. In the context of the present application, however, preference is given to those automatic dishwashing detergents in which the

Weight fraction of the cationic and / or amphoteric polymers between 0.01 and 8 wt .-%, preferably between 0.01 and 6 wt .-%, preferably between 0.01 and 4 wt .-%, particularly preferably between 0.01 and 2 wt .-% and in particular between 0.01 and 1 wt .-%, each based on the total weight of the automatic dishwashing detergent, is.

The bleaching agents are a substance which can be used with particular preference for washing or cleaning. Among the compounds which serve as bleaching agents in water H2O2, sodium percarbonate, sodium perborate tetrahydrate and sodium perborate monohydrate are of particular importance. Further bleaches which can be used are, for example, peroxypyrophosphates, citrate perhydrates and peroxygenic salts or peracids yielding H2O2, such as perbenzoates.

Peroxophthalates, diperazelaic acid, phthaloiminoperacid or diperdodecanedioic acid. In addition, all other known to the expert from the prior art can be used

inorganic or organic peroxy bleach.

As a bleaching agent and chlorine or bromine releasing substances can be used. Examples of suitable chlorine or bromine releasing materials

heterocyclic N-bromo- and N-chloroamides, for example trichloroisocyanuric acid,

Tribromoisocyanuric acid, dibromoisocyanuric acid and / or dichloroisocyanuric acid (DICA) and / or their salts with cations such as potassium and sodium into consideration. Hydantoin compounds, such as 1,3-dichloro-5,5-dimethylhydantoin are also suitable. According to the invention, automatic dishwashing agents are preferred which contain from 1 to 35% by weight, preferably from 2.5 to 30% by weight, particularly preferably from 3.5 to 20% by weight and in particular from 5 to 15% by weight of bleaching agent, preferably sodium percarbonate , contain.

As bleach activators, it is possible to use compounds which, under perhydrolysis conditions, give aliphatic peroxycarboxylic acids having preferably 1 to 10 C atoms, in particular 2 to 4 C atoms, and / or optionally substituted perbenzoic acid. All of the bleach activators known to the person skilled in the art are acylated alkylenediamines, in particular tetraacetylethylenediamine (TAED), acylated triazine derivatives, in particular 1,5-diacetyl-2,4-dioxohexahydro-1,3,5-triazine (DADHT) Glycolurils, in particular tetraacetylglycoluril (TAGU), N-acylimides, in particular N-nonanoylsuccinimide (NOSI), acylated phenolsulfonates, in particular n-nonanoyl or isononanoyloxybenzenesulfonate (n- or iso-NOBS) are particularly preferably used. Combinations of conventional bleach activators can also be used. These bleach activators are preferably used in amounts of up to 10% by weight, in particular 0.1% to 8% by weight, especially 2 to 8% by weight and more preferably 2 to 6% by weight, based in each case on the total weight of bleach activator-containing agents.

To increase the washing and cleaning performance of mechanical

Dishwashing agents are also enzymes used. These include in particular proteases, amylases, lipases, hemicellulases, cellulases, perhydrolases or oxidoreductases, and preferably mixtures thereof. These enzymes are basically of natural origin; Starting from the natural molecules, improved variants are available for use in automatic dishwasher detergents, which can be used correspondingly preferred. Automatic dishwashing agents preferably contain enzymes in total amounts of 1 × 10 ^-6 to 5% by weight, based on active protein. The protein concentration can be determined by known methods, for example the BCA method or the biuret method.

However, it is also possible to use enzymatic systems comprising a peroxidase and hydrogen peroxide or a substance which gives off hydrogen peroxide in water. The addition of a mediator compound for the peroxidase, for example an acetosyringone, a phenol derivative or a phenotiazine or phenoxazine, is preferred in this case, with the above-mentioned conventional polymeric color transfer inhibiting agents can additionally be used.

The enzymes can be used in any form known in the art. These include, for example, the solid preparations obtained by granulation, extrusion or lyophilization or, especially in the case of liquid or gel-form detergents, solutions of the enzymes, advantageously as concentrated as possible, sparing in water and / or added with stabilizers. Alternatively, the enzymes may be encapsulated for both the solid and liquid dosage forms, for example by spray-drying or extruding the enzyme solution together with a preferably natural polymer or in the form of capsules, for example those in which the enzymes are entrapped as in a solidified gel or in those of the core-shell type, in which an enzyme-containing core with a water, air and / or

Chemical-impermeable protective layer is coated. Preferably, a plurality of enzymes and / or enzyme preparations, preferably protease preparations and amylase preparations, in amounts of from 0.1 to 5 wt .-%, preferably from 0.2 to 4.5 wt .-% and in particular from 0.4 to 4 wt .-%, each based on the total enzyme-containing agent used.

Glass corrosion inhibitors prevent the occurrence of haze, streaks and scratches, but also iridescence of the glass surface of machine-cleaned glasses. Preferred glass corrosion inhibitors come from the group of magnesium and zinc salts and magnesium and zinc complexes. In the context of the present invention, the content of zinc salt in dishwasher detergents is preferably between 0.1 to 5% by weight, preferably between 0.2 to 4% by weight and in particular between 0.4 and 3% by weight the content of zinc in oxidized form (calculated as Zn ²⁺ ) is between 0.01 and 1% by weight, preferably between 0.02 and 0.5% by weight and in particular between 0.04 and 0.2% by weight .-%, in each case based on the

Total weight of the glass corrosion inhibitor-containing agent.

In order to facilitate the disintegration of preformed moldings, it is possible to incorporate disintegration aids, so-called tablet disintegrants, into these compositions in order to shorten the disintegration times. By tablet disintegrants or disintegrants are meant excipients which ensure the rapid disintegration of tablets in water or other media and for the rapid release of the active ingredients. Desintegration aids may preferably be used in amounts of from 0.5 to 10% by weight, preferably from 3 to 7% by weight and in particular from 4 to 6% by weight, based in each case on the total weight of the disintegration assistant-containing agent.

In various embodiments of the invention, the detergents are, for example, sodium carbonate as builder and / or the washing or cleaning-active polymers described above, preferably acrylate (co) polymers, which are commercially available, for example, under the trade name Acusol ™ included.

The preparation of automatic dishwashing agents according to the invention can take place in different ways. The agents may be in solid or liquid form as well as in a combination of solid and liquid forms. In particular, powder, Granules, extrudates, compacts, in particular tablets. The liquid supply forms based on water and / or organic solvents may be thickened, in the form of gels. Inventive agents can be formulated in the form of single-phase or multi-phase products. In particular, automatic dishwashing detergents with one, two, three or four phases are preferred. Machine dishwashing detergent, characterized in that it is in the form of a prefabricated dosing unit with two or more phases, are particularly preferred. The individual phases of multiphase agents may have the same or different states of matter. Machine dishwashing detergents which have at least two different solid phases and / or at least two liquid phases and / or at least one solid and at least one solid phase are preferred.

Automatic dishwasher detergents according to the invention are preferably prefabricated to form metering units. These metering units preferably comprise the necessary for a cleaning cycle amount of washing or cleaning-active substances. Preferred metering units have a weight between 12 and 30 g, preferably between 14 and 26 g and in particular between 16 and 22 g. In order to achieve an optimum cleaning and rinse-aid result, preference is given to those automatic dishwashing agents which are present in the form of a prefabricated dosing unit and between 0.001 and 1 g, preferably between 0.01 and 0.1 g, particularly preferably between 0.01 and 0, 07 g and in particular between 0.01 and 0.05 g of the polymer a) or between 0.1 and 2.5 g, preferably between 0.2 and 2.2 g, particularly preferably between 0.3 and 1, 9 g and in particular between 0.4 and 1.5 g of nonionic surfactant (s) b). The volume of the aforementioned metering units and their spatial form are selected with particular preference so that a metering of the prefabricated units is ensured via the metering chamber of a dishwasher. The volume of the dosing unit is therefore preferably between 10 and 35 ml, preferably between 12 and 30 ml.

The automatic dishwasher detergents according to the invention, in particular the prefabricated metering units, have a water-soluble coating, with particular preference.

The present application furthermore relates to a process in which an agent of the invention, in particular a machine dishwashing detergent of the invention, is used. The method may be a method of cleaning dishes in one

Dishwasher act in which the inventive agent during the

Passing a dishwashing program before the main wash cycle or in the course of the main wash cycle is metered into the interior of a dishwasher. The metering or the entry of the agent according to the invention into the interior of the dishwasher can be done manually, but preferably the agent is metered by means of the metering chamber into the interior of the dishwasher. A typical framework formulation for a machine dishwashing detergent preferably used, for example in tablet form, comprises the following substances:

 Na tripolyphosphate 20-50% by weight

 Sodium carbonate 10-30% by weight

 Sodium percarbonate 5-18% by weight

 Bleach activator 0.5-5% by weight

 Bleach catalyst 0.01-1% by weight

 Sulfopolymer 2.5-15% by weight

 Polycarboxylate 0, 1-10% by weight

 Nonionic surfactant 0.5-10% by weight

 Phosphonate 0.5-5% by weight

 Protease 0.1-5% by weight

 Amylase 0.1-5% by weight,

the data in% by weight are based on the total agent. Instead of the or a part of the tripolyphosphate, it is also possible in particular to use 10-50% by weight of citrate or MGDA or GLDA or EDDS or mixtures of two or three of these substances in the formulation.

The invention also relates to the use of the agents described herein for controlling or neutralizing bad odors in a machine dishwashing machine. These bad odors can be caused for example by non-use or storage of dirty dishes in the dishwasher. The agents may be used in the context of such use according to their nature. So are automatic dishwashing detergents and

Rinse aid used in normal rinsing operation. Care products are also in normal

Spülläufen or in idle, i. Spüläufen used without (dirty) dishes.

Dishwasher perfume compositions may also be used with the means mentioned in the normal rinse cycles. The compounds described herein are preferably characterized by the fact that over a relatively long period of time, usually over a period of days or weeks, the fragrances are released and, as a result, the malodor is / are continuously counteracted / neutralized.

The invention also relates to the use of one described herein

An oxazolidine precursor compound of a fragrance, in particular a fragrance aldehyde or ketone, for controlling or neutralizing malodors in a machine dishwashing machine. In principle, all embodiments disclosed in connection with the means of the invention are also applicable to the described methods and uses and vice versa. For example, it is understood that all of the specific oxazolidine fragrance precursors described herein in connection with the agents of the present invention are useful in the foregoing processes and are useful in the control of

Bad odors in the interior of dishwashers can be found.

Examples Example 1:

On the basis of a standardized real substance mixture, which simulates the dirt in a dishwasher, tests were carried out with different application forms. The

Detergent mixture for the bad odor test contained:

50% by weight of liquid ballast soil;

 6.67% by weight onions (fresh);

 3.33% by weight garlic (fresh)

 23.33% by weight anchovy paste (Dittmann); and

 16.67% by weight of Harzer cheese (Loose).

The ballast dirt contained:

71, 14 wt .-% tap water

5.08% by weight H-milk 1, 5% fat (Muh)

2.54% by weight of tomato ketchup (Kühne)

2.54% by weight mustard (lion mustard extra)

2.54% by weight gravy (Knorr)

0.51% by weight potato starch (Emsland)

0.41% by weight of benzoic acid

10.16% by weight of margarine (Risso)

5.08% by weight egg yolk (Wiesenhof Eifix)

Was the interior of a dishwasher after completion of the cleaning program using the above Realstoffmischung with respect to the intensities of fragrance and

Bad smell by 8 subjects on a scale of 1 -10, with 1 being very weak and 10 being very strong at 24, 48 and 72 hours after completion of the cleaning program.

The results are shown in Table 1. Table 1: Odor tests

It can be seen that the test compositions according to the invention mediated a longer-lasting fragrance and reduced the bad odors more than the compositions without the invention

Claims

claims

1. means for use in an automatic dishwasher, characterized

 in that the agent contains at least one oxazolidine precursor compound of a fragrance, in particular of a fragrance aldehyde or ketone.

2. Composition according to claim 1, characterized in that the agent contains at least one further fragrance.

3. Composition according to claim 1 or 2, characterized in that the at least one

 Oxazolidinvorläuferverbindung a fragrance can release a fragrance aldehyde or fragrance ketone and a compound of formula

 is, where

 R is selected from substituted or unsubstituted, branched or linear Ce-24 alk (en) yl, substituted or unsubstituted Ce-24 cycloalk (en) yl, substituted or unsubstituted Ce-24 (hetero) aryl and substituted or unsubstituted Ce-24 heterocyclyl;

 R is selected from H, substituted or unsubstituted, branched or linear C1-10 alkyl, substituted or unsubstituted, branched or linear C2-10 alkenyl, substituted or unsubstituted C3-15 cycloalk (en) yl, substituted or unsubstituted Ce-is (hetero -) Aryl and substituted or unsubstituted Ce-24

 Heterocyclyl, or

 R and R together with the carbon atom to which they are attached form a 3- to 10-membered substituted or unsubstituted cycloalk (en) yl or heterocyclyl ring or a 5-10 membered (hetero) aryl ring;

R ² , R ³ , R ⁴ , R ⁵ and R ^{6 are} independently selected from H, substituted or unsubstituted, branched or linear C 1-10 alkyl, substituted or unsubstituted, branched or linear C 2-10 alkenyl, substituted or unsubstituted C 3-6 alkyl, 15 Cycloalk (en) yl, substituted or unsubstituted Ce-is

(Hetero) aryl, substituted or unsubstituted Ce-24 heterocyclyl, -OH, - (CH 2) x COR ⁷ , and - (CR ⁰ R) _y (CHR ² CHR ³ O) z R ¹⁴ , or

each two of R ² , R ³ , R ⁴ , R ⁵ and R ⁶ together with the carbon atom (s) to which they are attached are a 3- to 10-membered substituted or

unsubstituted cycloalk (en) yl or heterocyclyl ring or a 5-10 membered ring Form (hetero) aryl ring, or R ² and R ³ or R ⁴ and R ⁵ together form a carbonyl group;

R ^{7 is} selected from -OH, -OR ⁸ , -N (R ⁹ ) 2, substituted or unsubstituted, branched or linear C 1-22 alkyl, substituted or unsubstituted, branched or linear C 2-22 alkenyl, substituted or unsubstituted C 3-22 Cycloalk (en) yl, substituted or unsubstituted Ce-24 (hetero) aryl and substituted or

 unsubstituted Ce-24 heterocyclyl;

R ^{8 is} selected from H, substituted or unsubstituted, branched or linear C 1-15 alkyl, substituted or unsubstituted, branched or linear C 2-22 alkenyl, and M, wherein M is a water-soluble cation;

R ^{9 is} selected from H and substituted or unsubstituted, branched or linear C 1-6 alkyl;

R ⁰ , R and R ^{2 are} independently selected from H, -OH and C 1-4 alkyl; or R ⁰ and R together with the carbon atom to which they are attached are a 3- to 10-membered substituted or unsubstituted cycloalk (en) yl or heterocyclyl ring, a 5-10 membered (hetero) aryl ring or a Form carbonyl group;

R ³ and R ^{4 are} independently selected from H and C 1-4 alkyl;

 x is an integer from 0 to 22;

 y is an integer from 1 to 10; and

 z is an integer from 1 to 50.

4. Another preferred embodiment of the oxazolidine precursors capable of liberating a fragrance aldehyde or fragrance ketone by hydrolysis comprises compounds of the formula

 in which

 R is selected from substituted or unsubstituted, branched or linear Ce-24 alk (en) yl, substituted or unsubstituted Ce-24 cycloalk (en) yl, substituted or unsubstituted Ce-24 (hetero) aryl and substituted or unsubstituted Ce-24

 heterocyclyl;

R is selected from H, substituted or unsubstituted, branched or linear C3-10 alkyl, substituted or unsubstituted, branched or linear C4-10 alkenyl, substituted or unsubstituted C3-15 cycloalk (en) yl, substituted or unsubstituted Ce-is (hetero -) Aryl and substituted or unsubstituted Ce-24 Heterocyclyl, or

 R and R together with the carbon atom to which they are attached form a 3- to 10-membered substituted or unsubstituted cycloalk (en) yl or heterocyclyl ring or a 5-10 membered (hetero) aryl ring;

R ² , R ³ , R ⁴ , R ⁵ and R ^{6 are} independently selected from H, substituted or unsubstituted, branched or linear C 3-10 alkyl, substituted or unsubstituted, branched or linear C 4-10 alkenyl, substituted or

 unsubstituted C 3-15 cycloalk (en) yl, substituted or unsubstituted Ce-is

(Hetero) aryl, substituted or unsubstituted Ce-24 heterocyclyl, -OH, - (CH 2) x COR ⁷ , and - (CR ⁰ R) _y (CHR ² CHR ³ O) z R ¹⁴ , or

in each case two of R ² , R ³ , R ⁴ , R ⁵ and R ⁶ together with the carbon atom (s) to which they are attached are a 3- to 10-membered substituted or unsubstituted cycloalk (en) yl or heterocyclyl ring or a 5-10 membered (hetero) aryl ring, or R ² and R ³ or R ⁴ and R ⁵ together form a carbonyl group;

R ^{7 is} selected from -OH, -OR ⁸ , -N (R ⁹ ) 2, substituted or unsubstituted, branched or linear C 3-22 alkyl, substituted or unsubstituted, branched or linear C 4-22 alkenyl, substituted or unsubstituted C 3-22 Cycloalk (en) yl, substituted or unsubstituted Ce-24 (hetero) aryl and substituted or unsubstituted Ce-24 heterocyclyl;

R ^{8 is} selected from H, substituted or unsubstituted, branched or linear C 3-15 alkyl, substituted or unsubstituted, branched or linear C 4-22 alkenyl, and M, wherein M is a water-soluble cation;

R ^{9 is} selected from H and substituted or unsubstituted, branched or linear C 3-6 alkyl;

R ⁰ , R and R ^{2 are} independently selected from H, -OH and C 1-4 alkyl; or R ⁰ and R together with the carbon atom to which they are attached are a 3- to 10-membered substituted or unsubstituted cycloalk (en) yl or heterocyclyl ring, a 5-10 membered (hetero) aryl ring or a Form carbonyl group;

R ³ and R ^{4 are} independently selected from H and C 1-4 alkyl;

 x is an integer from 0 to 22;

 y is an integer from 1 to 10; and

 z is an integer from 1 to 50.

5. Composition according to one of claims 1-4, characterized in that the fragrance aldehyde or fragrance ketone is selected from adoxal (2,6, 10-trimethyl-9-undecenal), anisaldehyde (4-methoxybenzaldehyde), Cymal ( 3- (4-isopropylphenyl) -2-methylpropanal), ethyl vanillin, florhydral (3- (3-isopropylphenyl) butanal]), helional (3- (3,4-) Methylenedioxyphenyl) -2-methylpropanal), heliotropin, hydroxycitronellal, lauraldehyde, lyral (3- and 4- (4-hydroxy-4-methylpentyl) -3-cyclohexene-1-carboxaldehyde),

Methylnonylacetaldehyde, Lilial (3- (4-tert-butylphenyl) -2-methylpropanal),

Phenylacetaldehyde, undecylenealdehyde, vanillin, 2,6, 10-trimethyl-9-undecenal, 3-dodecene-1-al, alpha-n-amylcinnamaldehyde, melonal (2,6-dimethyl-5-heptenal), 2,4-dimethyl 3-cyclohexene-1-carboxaldehyde (Triplal), 4-methoxybenzaldehyde, benzaldehyde, 3- (4-tert-butylphenyl) -propanal, 2-methyl-3- (para-methoxyphenyl) propanal, 2-methyl-4- ( 2,6,6-trimethyl-2 (1) -cyclohexen-1-yl) butanal, 3-phenyl-2-propenal, cis / trans-3,7-dimethyl-2,6-octadiene-1-al, 3J-dimethyl-6-octene-1-al, [(3,7-dimethyl-6-octenyl) oxy] acetaldehyde, 4-isopropylbenzylaldehyde, 1, 2, 3, 4, 5, 6J, 8-octahydro-8, 8-dimethyl-2-naphthaldehyde, 2,4-dimethyl-3-cyclohexene-1-carboxaldehyde, 2-methyl-3- (isopropylphenyl) propanal, 1-decanal, 2,6-dimethyl-5-heptenal, 4- [5.2.1.0 (2,6)] - decylidene-8) butanal,

Octahydro-4,7-methane-1H-indenecarboxaldehyde, 3-ethoxy-4-hydroxybenzaldehyde, para-ethyl-alpha, alpha-dimethylhydrocinnamaldehyde, alpha-methyl-3,4- (methylenedioxy) -hydrocinnamaldehyde, 3,4-methylenedioxybenzaldehyde , alpha-n-hexylcinnamaldehyde, m-cymene-7-carboxaldehyde, alpha-methylphenylacetaldehyde, 7-hydroxy-3J-dimethyloctanal, undecenal, 2,4,6-trimethyl-3-cyclohexene-1-carboxaldehyde, 4- (3) (4-methyl-3-pentenyl) -3-cyclohexene carboxaldehyde, 1-dodecanal, 2,4-dimethylcyclohexene-3-carboxaldehyde, 4- (4-hydroxy-4-methylpentyl) -3-cyclohexene-1-carboxaldehyde, 7 Methoxy-3,7-dimethyloctan-1-al, 2-methylundecanal, 2-methyldecanal, 1-nonanal, 1-octanal, 2,6, 10-trimethyl-5,9-undecadienal, 2-methyl-3- (4 tert-butyl) propanal, dihydrocinnamaldehyde, 1-methyl-4- (4-methyl-3-pentenyl) -3-cyclohexene-1-carboxaldehyde, 5- or 6-methoxy-hexahydro-4,7-methanindan-1 - or - 2-carboxaldehyde, 3,7-dimethyloctan-1-al, 1-undecanal, 10-undecene-1-al, 4-hydroxy-3-methoxybenzaldehyde, 1-methyl-3- (4-methylpentyl) -3-cyclohexenecarb oxaldehyde, 7-hydroxy-3,7-dimethyl-octanal, trans-4-decenal, 2,6-nonadienal, para-tolylacetaldehyde, 4-methylphenylacetaldehyde, 2-methyl-4- (2,6,6-trimethyl-1 cyclohexen-1-yl) -2-butenal, ortho-methoxycinnamaldehyde, 3,5,6-trimethyl-3-cyclohexene carboxaldehyde, 3,7-dimethyl-2-methylene-6-octenal, phenoxyacetaldehyde, 5,9-dimethyl 4,8-decadienal, peonyaldehyde (6,10-dimethyl-3-oxa-5,9-undecadiene-1-al), hexahydro-4,7-methanindane-1-carboxaldehyde, 2-methyloctanal, alpha-methyl-4 - (1-methylethyl) benzeneacetaldehyde, 6,6-dimethyl-2-norpinen-2-propionaldehyde, para-methylphenoxyacetaldehyde, 2-methyl-3-phenyl-2-propen-1-al, 3,5,5-trimethylhexanal, Hexahydro-8,8-dimethyl-2-naphthaldehyde, 3-propylbicyclo [2.2.1] -hept-5-en-2-carbaldehyde, 9-decenal, 3-methyl-5-phenyl-1-pentanal, methylnonylacetaldehyde, hexanal , trans-2-hexenal, methyl-beta-naphthyl ketone, muskedanone-1 (2,3,3,5,6,7-hexahydro-1,1,2,3,3-pentamethyl-4H-inden-4-one), Tonalid (6-acetyl-1, 1, 2,4,4,7-hexamethyltetralin), alpha-Damasc one, beta-damascone, delta-damascone, iso-damascone, damascenone, methyldihydrojasmonate, menthone, carvone, camphor, koavon (3,4,5,6,6-pentamethylhept-3-) en-2-o), fenchone, alpha-ionone, beta-ionone, gamma-methyl-ionone, fleuramon (2-heptylcyclopentanone), dihydrojasmon, cis-jasmone, 1- (1, 2,3,4,5,6 , 7,8-octa-hydro-2, 3,8,8-tetramethyl-2-naphthalenyl) -ethan-1-one and isomers thereof, methyl cydrenyl ketone, acetophenone, methyl acetophenone, para-methoxy acetophenone, methyl beta-naphthyl ketone, benzyl acetone, Benzophenone, para-hydroxyphenylbutanone, celery ketone (3-methyl-5-propyl-2-cyclohexenone), 6-isopropyldeca-hydro-2-naphthone, dimethyloctenone,

 Frescomenthe (2-butan-2-ylcyclohexan-1-one), 4- (1-ethoxyvinyl) -3, 3,5,5-tetramethylcyclohexanone, methylheptenone, 2- (2- (4-methyl-3-cyclohexene-1 - yl) propyl) cyclopentanone, 1 - (p-menthene-6 (2) yl) -1-propanone, 4- (4-hydroxy-3-methoxyphenyl) -2-butanone, 2-acetyl-3,3 dimethylnorbornane, 6,7-dihydro-1,1,2,3,3-pentamethyl-4 (5H) in-danone, 4-damascol, dulcinyl (4- (1,3-benzodioxol-5-yl) butane 2-one), hexalon (1- (2,6,6-trimethyl-2-cyclohexene-1-yl) -1, 6-heptadien-3-one), isocyclone E (2-acetonaphthone-1, 2,3 , 4,5,6J, 8-octahydro-2,3,8,8-tetramethyl), methyl nonyl ketone, methylcyclo- citron, methylene lavender ketone, orivone (4-tert-amylcyclohexanone), 4-tert-butyl cyclohexanone, dolphone (2-pentyl cyclopentanone ), Muscon (CAS 541-91-3), neobutenone (1- (5,5-dimethyl-1-cyclohexenyl) pent-4-en-1-one), Plicaton (CAS 41724-19-0), Veloutone (2,2,5-trimethyl-5-pentylcyclopentan-1-one), 2,4,4,7-tetramethyl-oct-6-en-3-one, tetrameran (6,10-dimethylundecen-2-one ) and mixtures thereof, in particular from Lilial, Helional, Anisal dehyd, cyclamenaldehyde, triplal, melonal, methylundecanal, undecanal, nonanal and octanal.

6. Composition according to one of claims 1-5, characterized in that the means the

 at least one oxazolidine precursor compound of a fragrance based on the total weight of the composition in amounts of 0.01 to 30 wt .-%, in particular from 0.01 to 25 wt .-%, more preferably from 0.01 to 10 wt .-%.

7. Composition according to one of claims 1-6, characterized in that the means

 is selected from automatic dishwashing detergents, automatic dishwashing detergents, rinse aids, and automatic dishwashing perfume compositions.

8. Composition according to one of claims 1-7, characterized in that

 (1) the agent is in solid or liquid form; and or

 (2) the agent is in pre-portioned form; and or

 (3) the composition has several spatially separate compositions of which at least one composition is solid and / or one

 Liquid composition is present, wherein the at least one

Oxazolidine precursor compound is contained in at least one of the compositions; and or (4) the agent comprises at least one further constituent, preferably at least two further constituents selected from the group consisting of builders, surfactants, polymers, bleaches, bleach activators, bleach catalysts, enzymes,

 Corrosion inhibitors, glass corrosion inhibitors, disintegration aids, and

 Contains perfume carriers, in particular sodium carbonate and / or acrylate polymers or copolymers.

9. Use of an agent according to any one of claims 1-8 for controlling or

 Neutralization of bad odors in a machine dishwasher.

10. A machine dishwashing process, characterized in that a means

 in particular a machine dishwashing detergent, according to one of claims 1-8 is used.

1 1. Use of an oxazolidine precursor compound of a fragrance, in particular a fragrance aldehyde or ketone, for controlling or neutralizing

 Bad smells in a machine dishwasher.