Composition for controlling, reducing or eliminating malodors associated with plastic materials - Patents.com

Abstract

The present invention relates to a malodor counteracting composition, as well as to perfume compositions, packaging materials, and consumer products comprising the malodor counteracting composition according to the invention.Furthermore, the present invention relates to a method for inhibiting, reducing or eliminating the perception of malodors associated with a plastic material, comprising the step of adding a malodor counteracting composition according to the invention to the plastic material.

Description

[Technical field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of priority to U.S. Provisional Application No. 63 / 196,501, filed June 3, 2021, and European Application No. 21181943.8, filed June 28, 2021, the entire contents of which are expressly incorporated herein by this reference.

[0002] The present invention relates to a malodor counteracting composition, as well as to perfume compositions, packaging materials, and consumer products comprising the malodor counteracting composition according to the invention.Furthermore, the present invention relates to a method for inhibiting, reducing or eliminating the perception of malodors associated with a plastic material, comprising the step of adding a malodor counteracting composition according to the invention to the plastic material.

[0003] 2. Background of the Invention Plastic materials play an important role in packaging many types of consumer products, as well as food and beverage products. However, the use of large amounts of plastic materials for this purpose is associated with environmental concerns and high disposal costs of used plastic materials.

[0004] Therefore, recycling post-consumer plastic materials is an increasingly popular option. During the recycling of plastic materials, particularly plastic containers such as plastic bottles, the post-consumer plastic materials are subjected to an intense cleaning process, including high temperature caustic washing, and then made into resin pellets that are again used to manufacture recycled plastic articles, such as recycled plastic bottles.

[0005] However, in contrast to original plastic materials, also called virgin plastics, recycled plastic materials are often associated with unpleasant odors that tend to develop during the recycling process.

[0006] Malodors are usually complex mixtures of multiple malodorous compounds, which may typically include a variety of amines, thiols, sulfides, short chain aliphatic and unsaturated acids, such as fatty acids, and their derivatives.

[0007] The malodour of recycled plastic materials makes them unsuitable for repeated use as packaging materials for consumer products, food and beverages, as the malodour of recycled plastic materials reduces their acceptance by end customers.

[0008] Therefore, there is a constant need for malodor neutralization technologies (MOCs) to reduce or suppress the perception of malodor in plastic materials. However, this task is quite challenging, as the compounds causing malodor often produce very strong odors and may have very low detection thresholds.

[0009] Accordingly, the present invention provides a malodor counteracting composition for controlling, reducing or eliminating malodors associated with plastic materials, particularly recycled plastic materials. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 shows the QDA sensory evaluation of a virgin plastic bottle (control sample). [Diagram 2] FIG. 1 shows the QDA sensory evaluation of the first recycled plastic bottle. [Diagram 3] FIG. 13 shows the QDA sensory evaluation of the second recycled plastic bottle. [Figure 4] FIG. 13 shows the QDA sensory evaluation of the third recycled plastic bottle. [Diagram 5] FIG. 13 shows the QDA sensory evaluation of the fourth recycled plastic bottle. [Figure 6] FIG. 1 shows the malodor intensity of untreated recycled plastic bottles and recycled plastic bottles treated with a malodor counteracting composition.

[0011] Detailed Description of the Invention The present invention relates to undecanal, dodecanal, 10-undecenal, (E / Z)-9-undecenal, (-)-(5R)-5-isopropenyl-2-methyl-2-cyclohexen-1-one, (+ / -)-3,6,8,8-tetramethyloctahydro-1H-3a,7-methanoazulen-6-ol, 3,7-dimethyl-2,6-octadienal, (+ / -)-3,7-dimethyl-6-octen-1-ol, (-)-(R)-3,7-dimethyl-6-octenenitrile, (+ / -)-(2E)-1-(2,6,6-trimethyl-2-cyclohexenyl) (+ / -)-(3E)-3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, (+ / -)-(1E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-penten-3-one, 5-methyl-2-(2-propanyl)cyclohexanone, isopropyl myristate, (+ / -)-tetrahydro-2-isobutyl-2-methyl-4(2H)-pyranol, (+ / -)-3-phenylbutanal, (3E)-4-(2,6 ,6-trimethyl-1 / 2-cyclohexen-1-yl)-3-buten-2-one, dodecahydro-3,8,8,11a-tetramethyl-5H-3,5a-epoxynaphtho[2,1-c]oxepin, (+ / -)-5-heptyldihydro-2(3H)-furanone, benzyl benzoate, 4-methyl-2,6-bis(2-methyl-2-propanyl)phenol, triethyl citrate, 2-ethyl-3-hydroxy-4(4H)-pyranone, (+ / -)-3-(3-isopropyl-1-phenyl)butanal, 1-oxa-12 / 13-cyclohex Sidecen-2-one, (+ / -)-(2,5-dimethyl-2,3-dihydro-1H-inden-2-yl)methanol, (+ / -)-3-methyl-5-phenyl-1-pentanol, 3-(dodecylthio)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-1-butanone, 2-(2H-1,2,3-benzotriazol-2-yl)-6-dodecyl-4-methylphenol, 2,2',2''-nitrilotriethanol, benzyl acetate, (1R,2R)-1,7,7-trimethyl-bicyclo[2.2.1]hept-2-yl acetate, (+ / -)-2-(4-methyl-3-cyclohexen-1-yl)-2-propanyl acetate, acetophenone, 1-hexanol, (+ / -)-2-methylundecanal, methyl 2-aminobenzoate, (1S,2S,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol, (1S,2R,4S)-1,7, 7-Trimethylbicyclo[2.2.1]heptan-2-ol, (+ / -)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-one, (+ / -)-1-octen-3-ol, Virginia cedarwood oil, (3aRS,5aSR,9aSR,9bRS)-3a,6,6,9a-tetramethyldodecahydronaphtho[2,1-b]furan, tricyclo[5.2.1.02,6]Dece-3 / 4-en-8-yl acetate, 2-chromenone, (2E)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-2-buten-1-one, (+ / -)-2,6-dimethyl-7-octen-2-ol, (+ / -)-3,7-dimethyl-1-octanol, 1,1'-oxydibenzene, dipropylene glycol, 5-methyl -3-Heptanone, 3-Ethoxy-4-hydroxybenzaldehyde, 3,7-Dimethyl-2,6-octadien-1-ol, Clove Leaf Oil, (Z)-3,4,5,6,6-Pentamethylhept-3-en-2-one, 3,6-Dimethylhexahydro-1-benzofuran-2(3H)-one, (+-)-3,7-Dimethyl-1,6-octadien-3-ol, (+ / -)-2, The present invention relates to a malodor counteracting composition comprising a compound selected from the group consisting of 6-dimethyl-5-heptenal, 6-methyl-5-hepten-2-one, 2-octanone, 2-heptanone, 1-(5,5-dimethyl-1-cyclohexen-1-yl)-4-penten-1-one, Alaska cedarwood oil, patchouli oil, (2E,6Z)-2,6-nonadienal, β-pinene, (3Z)-3-hexen-1-ol, pyrazobutyl, 4-(2-methyl-2-propanyl)cyclohexanol, (+ / -)-α-terpineol, 2-(2-methyl-2-propanyl)cyclohexyl acetate, acetyl cedrene, 2-methyl-3-hexanone oxime, 2-methoxynaphthalene, 1,4-epoxy-p-menthane, 1,8-epoxy-p-menthane, or any mixture thereof. .

[0012] In certain embodiments, the malodor counteracting composition comprises undecanal, dodecanal, 10-undecenal, (E / Z)-9-undecenal, (-)-(5R)-5-isopropenyl-2-methyl-2-cyclohexen-1-one, (+ / -)-3,6,8,8-tetramethyloctahydro-1H-3a,7-methanoazulen-6-ol, 3,7-dimethyl-2,6-octadienal, (+ / -)-3,7-dimethyl-6-octen-1-ol, (-)-(R)-3,7-dimethyl-6-octenenitrile, (+ / -)-(2E)-1-(2,6,6 -Trimethyl-2-cyclohexen-1-yl)-2-buten-1-one, (+ / -)-(3E)-3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, (+ / -)-(1E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-penten-3-one, 5-methyl-2-(2-propanyl)cyclohexanone, isopropyl myristate, (+ / -)-tetrahydro-2-isobutyl-2-methyl-4(2H)-pyranol, (+ / -)-3-phenylbutanal, (3E) -4-(2,6,6-trimethyl-1 / 2-cyclohexen-1-yl)-3-buten-2-one, dodecahydro-3,8,8,11a-tetramethyl-5H-3,5a-epoxynaphtho[2,1-c]oxepin, (+ / -)-5-heptyldihydro-2(3H)-furanone, benzyl benzoate, 4-methyl-2,6-bis(2-methyl-2-propanyl)phenol, triethyl citrate, 2-ethyl-3-hydroxy-4(4H)-pyranone, (+ / -)-3-(3-isopropyl-1-phenyl)butanal, 1-oxa-12 / 13-cyclohexanone rohexidecen-2-one, (+ / -)-(2,5-dimethyl-2,3-dihydro-1H-inden-2-yl)methanol, (+ / -)-3-methyl-5-phenyl-1-pentanol, 3-(dodecylthio)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-1-butanone, 2-(2H-1,2,3-benzotriazol-2-yl)-6-dodecyl-4-methylphenol, 2,2',2''-nitrilotriethanol, benzyl acetate, (1R,2R)-1,7,7-trimethyl-bicyclo[2.2.1]hept-2-yl acetate, (+ / -)-2-(4-methyl-3-cyclohexen-1-yl)-2-propanyl acetate, acetophenone, 1-hexanol, (+ / -)-2-methylundecanal, methyl 2-aminobenzoate, (1S,2S,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol, (1S,2R,4S)-1,7, 7-Trimethylbicyclo[2.2.1]heptan-2-ol, (+ / -)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-one, (+ / -)-1-octen-3-ol, Virginia cedarwood oil, (3aRS,5aSR,9aSR,9bRS)-3a,6,6,9a-tetramethyldodecahydronaphtho[2,1-b]furan, tricyclo[5.2.1.02,6]dec-3 / 4-en-8-yl acetate, 2-chromenone, (2E)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-2-buten-1-one, (+ / -)-2,6-dimethyl-7-octen-2-ol, (+ / -)-3,7-dimethyl-1-octanol, 1,1'-oxydibenzene, dipropylene glycol, 5- Methyl-3-heptanone, 3-ethoxy-4-hydroxybenzaldehyde, 3,7-dimethyl-2,6-octadien-1-ol, Clove Leaf Oil, (Z)-3,4,5,6,6-Pentamethylhept-3-en-2-one, 3,6-Dimethylhexahydro-1-benzofuran-2(3H)-one, (+-)-3,7-Dimethyl-1,6-octadien-3-ol, (+ / The compound is selected from the group consisting of -2,6-dimethyl-5-heptenal, 6-methyl-5-hepten-2-one, 2-octanone, 2-heptanone, 1-(5,5-dimethyl-1-cyclohexen-1-yl)-4-penten-1-one, Alaska cedarwood oil, patchouli oil, (2E,6Z)-2,6-nonadienal, β-pinene, (3Z)-3-hexen-1-ol, pyrazobutyl, 4-(2-methyl-2-propanyl)cyclohexanol, (+ / -)-α-terpineol, 2-(2-methyl-2-propanyl)cyclohexyl acetate, acetyl cedrene, 2-methyl-3-hexanone oxime, 2-methoxynaphthalene, 1,4-epoxy-p-menthane, 1,8-epoxy-p-menthane, or any mixture thereof.

[0013] In certain embodiments, the malodor counteracting composition is selected from the group consisting of undecanal, dodecanal, 10-undecenal, (E / Z)-9-undecenal, (-)-(5R)-5-isopropenyl-2-methyl-2-cyclohexen-1-one, (+ / -)-3,6,8,8-tetramethyloctahydro-1H-3a,7-methanoazulen-6-ol, 3,7-dimethyl-2,6-octadienal, (+ / -)-3,7-dimethyl-6-octen-1-ol, (-)-(R)-3,7-dimethyl-6-octenenitrile, (+ / -)-(2E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one, (+ / -)-(3E)-3-methyl-4-(2, 6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, (+ / -)-(1E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-penten-3-one, 5-methyl-2-(2-propanyl)cyclohexanone, isopropyl myristate, (+ / -)-tetrahydro-2-isobutyl-2-methyl-4(2H)-pyranol, (+ / -)-3-phenylbutanal, (3E)-4-(2,6,6-trimethyl-1 / 2-cyclohexen-1-yl)-3-buten-2-one, dodecahydro-3,8,8,11a-tetramethyl-5H-3,5a-epoxynaphtho[2,1-c]oxepin, and preferably consisting of these.

[0014] In certain embodiments, the malodor counteracting composition comprises, based on the total amount of the malodor counteracting composition: · 5-10% by weight of undecenal; · 1-2% by weight of dodecanal; 0.5-1% by weight of 10-undecenal, (E)-9-undecenal and a mixture of 10-undecenal and (Z)-9-undecenal; 1-5% by weight of (-)-(5R)-5-isopropenyl-2-methyl-2-cyclohexen-1-one; 1-5% by weight of (+ / -)-3,6,8,8-tetramethyloctahydro-1H-3a,7-methanoazulen-6-ol; · 2-7% by weight of 3,7-dimethyl-2,6-octadienal; 3-10% by weight of (+ / -)-3,7-dimethyl-6-octen-1-ol; 0.5-1% by weight of (-)-(R)-3,7-dimethyl-6-octenenitrile; 1-2% by weight of (+ / -)-(2E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one; 30-40% by weight of (+ / -)-tetrahydro-2-isobutyl-2-methyl-4(2H)-pyranol; 20-30% by weight of a mixture of (+ / -)-(3E)-3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one and (+ / -)-(1E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-penten-3-one; 0.5-1% by weight of 5-methyl-2-(2-propanyl)cyclohexanone; 0.5-1% by weight of (+ / -)-3-phenylbutanal; 2-6% by weight of (3E)-4-(2,6,6-trimethyl-1 / 2-cyclohexen-1-yl)-3-buten-2-one; 0.5 to 1% by weight of dodecahydro-3,8,8,11a-tetramethyl-5H-3,5a-epoxynaphtho[2,1-c]oxepin and preferably consists of these.

[0015] In certain embodiments, the malodor counteracting composition comprises (+ / -)-5-heptyldihydro-2(3H)-furanone, benzyl benzoate, 4-methyl-2,6-bis(2-methyl-2-propanyl)phenol, triethyl citrate, 2-ethyl-3-hydroxy-4(4H)-pyranone, (+ / -)-3-(3-isopropyl-1-phenyl)butanal, 1-oxa-12 / 13-cyclohexidecen-2-one, (+ / -)-(2,5-dimethyl-2,3-dihydro-1H-inden-2-yl)methanol, (+ / - )-3-methyl-5-phenyl-1-pentanol, 3-(dodecylthio)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-1-butanone, 2-(2H-1,2,3-benzotriazol-2-yl)-6-dodecyl-4-methylphenol, 2,2',2''-nitrilotriethanol, isopropyl myristate, and (3E)-4-(2,6,6-trimethyl-1 / 2-cyclohexen-1-yl)-3-buten-2-one, preferably consisting of these.

[0016] In certain embodiments, the malodor counteracting composition comprises, based on the total amount of the malodor counteracting composition: 1-3% by weight of (+ / -)-5-heptyldihydro-2(3H)-furanone; 18-25% by weight of benzyl benzoate; · 0.5-2% by weight of 4-methyl-2,6-bis(2-methyl-2-propanyl)phenol; 15-25% by weight of triethyl citrate; 0.01-0.02% by weight of 2-ethyl-3-hydroxy-4(4H)-pyranone; 0.01-0.2% by weight of (+ / -)-3-(3-isopropyl-1-phenyl)butanal; 15-25% by weight of 1-oxa-12 / 13-cyclohexidecen-2-one; 0.1-1% by weight of (+ / -)-(2,5-dimethyl-2,3-dihydro-1H-inden-2-yl)methanol; · 15-20% by weight of isopropyl myristate; 1-5% by weight of (+ / -)-3-methyl-5-phenyl-1-pentanol; 5-10% by weight of 3-(dodecylthio)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-1-butanone; 0.5-2% by weight of 2-(2H-1,2,3-benzotriazol-2-yl)-6-dodecyl-4-methylphenol; · 3-6% by weight of 2,2',2''-nitrilotriethanol; 1 to 3% by weight of (3E)-4-(2,6,6-trimethyl-1 / 2-cyclohexen-1-yl)-3-buten-2-one and preferably consists of these.

[0017] In certain embodiments, the malodor counteracting composition comprises benzyl acetate, (1R,2R)-1,7,7-trimethyl-bicyclo[2.2.1]hept-2-yl acetate, (+ / -)-2-(4-methyl-3-cyclohexen-1-yl)-2-propanyl acetate, acetophenone, 1-hexanol, (+ / -)-2-methylundecanal, methyl 2-aminobenzoate, (1S,2S,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol, (1S,2R ,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol, (+ / -)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-one, (+ / -)-1-octen-3-ol, Virginia cedarwood oil, (3aRS,5aSR,9aSR,9bRS)-3a,6,6,9a-tetramethyldodecahydronaphtho[2,1-b]furan, tricyclo[5.2.1.02,6]dec-3 / 4-en-8-yl acetate, 2-chromenone, (2E )-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-2-buten-1-one, (+ / -)-2,6-dimethyl-7-octen-2-ol, (+ / -)-3,7-dimethyl-1-octanol, 1,1'-oxydibenzene, dipropylene glycol, 5-methyl-3-heptanone, 3-ethoxy-4-hydroxybenzaldehyde, 3,7-dimethyl-2,6-octadien-1-ol, clove leaf oil, (Z)-3,4,5, 6,6-Pentamethylhept-3-en-2-one, 3,6-Dimethylhexahydro-1-benzofuran-2(3H)-one, (+-)-3,7-Dimethyl-1,6-octadien-3-ol, (+ / -)-2,6-Dimethyl-5-heptenal, 6-Methyl-5-hepten-2-one, 2-Octanone, 2-Heptanone, 1-(5,5-Dimethyl-1-cyclohexen-1-yl)-4-penten-1-one, Alaska Cedarwood Oil, Patchouli Oil, (2E,6Z)-2,6-Nonadienal, β-pinene, (3Z)-3-hexen-1-ol, pyrazobutyl, 4-(2-methyl-2-propanyl)cyclohexanol, (+ / -)-α-terpineol, 2-(2-methyl-2-propanyl)cyclohexyl acetate, acetyl cedrene, 2-methyl-3-hexanone oxime, 2-methoxynaphthalene, 1,4-epoxy-p-menthane, 1,8-epoxy-p-menthane, 10-undecenal, undecanal, dodecanal, 10-undecenal, (9E)-9-undecenal, (9Z)-9-undecenal, (-)-(5R)-5-isopropenyl -2-methyl-2-cyclohexen-1-one, 3,7-dimethyl-2,6-octadienal, (+ / -)-3,7-dimethyl-6-octen-1-ol, (-)-(R)-3,7-dimethyl-6-octenenitrile, (+ / -)-(3E)-3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, (+ / -)-(1E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-penten-3-one, 5-methyl-2-(2-propanyl)cyclohexanone, and isopropyl myristate, preferably consisting of these.

[0018] Another aspect of the invention relates to a method of inhibiting, reducing or eliminating the perception of malodors associated with a plastic material comprising the step of adding a malodor-neutralizing composition to the plastic material.

[0019] The malodor counteracting composition added to the plastic material may comprise any of the compounds and compound compositions described above, respectively.

[0020] In a particular embodiment, the plastic material is a recycled plastic material. Preferably, the recycled plastic material is a plastic container intended for use in packaging consumer products, food or beverages. Such recycled plastic containers may be plastic bottles or plastic boxes, preferably plastic bottles.

[0021] In certain embodiments, the plastic material gives at least one malodor impression selected from the group consisting of wet impression, nutty impression, oily impression after cooking, rubbery impression, ashtray impression, tarry impression, garbage impression. Such malodor impressions can be determined, for example, by sensory quantitative descriptive analysis (QDA). The aforementioned malodor impressions are often present in recycled plastic materials, i.e. in used plastic materials that have been purified, for example, by a caustic washing step, so that said recycled plastic materials can be reused, for example, as packaging materials. These malodor impressions are suppressed, reduced or eliminated by the addition of the malodor neutralizing composition according to the invention.

[0022] In certain embodiments, the plastic material comprises a malodorous compound selected from the group consisting of 1-octen-3-ol, (E)-3,7-dimethyl-1,3,6-octatriene ((E)-β-ocimene), acetophenone, cymene, 2,6-dimethyl-2,4,6-octatriene (allocimene), estragole, p-α-dimethylstyrene, or any mixture thereof.

[0023] In a particular embodiment, the plastic material comprises 1-octen-3-ol. In another particular embodiment, the plastic material comprises (E)-3,7-dimethyl-1,3,6-octatriene ((E)-β-ocimene). In another particular embodiment, the plastic material comprises acetophenone. In another particular embodiment, the plastic material comprises acetophenone cymene, which may be para-cymene, meta-cymene, or ortho-cymene. In another particular embodiment, the plastic material comprises 2,6-dimethyl-2,4,6-octatriene (allocimene). In another particular embodiment, the plastic material comprises estragole. In another particular embodiment, the plastic material comprises p-α-dimethylstyrene. The particular malodorous compounds can be determined by common gas chromatography-related analytical techniques, such as, for example, sniffing gas chromatography.

[0024] In certain embodiments, the plastic material comprises a compound selected from the group consisting of cymene, dihydromyrcenol, 3,7,7-trimethylbicyclo[4.1.0]heptan-2-one (carone), 1-octen-3-ol, and ethyl 2-methylvalerate.

[0025] In certain embodiments, the plastic material comprises a compound selected from the group consisting of 4-methoxysalicylaldehyde, decanal, dihydromyrcenol, trans-2-octenal, 1-octen-3-ol, and prenyl acetate.

[0026] In certain embodiments, the plastic material comprises a compound selected from the group consisting of α-iso-methylionone, 2-methoxynaphthalene, α-ionone, estragole, 8-cymen-8-ol, allocimene, cymene, (E)-β-ocimene, acetophenone, and 1-octen-3-ol.

[0027] In certain embodiments, the plastic material comprises a compound selected from the group consisting of 4-tert-butylcyclohexyl acetate, estragole, allocimene, p-α-dimethylstyrene, cymene, (E)-β-ocimene, acetophenone, and 1-octen-3-ol.

[0028] In certain embodiments, the plastic material comprises a compound selected from the group consisting of α-iso-methylionone, 2-methoxynaphthalene, α-ionone, estragole, 3-(3,4-dimethylphenyl)-2,2-dimethylpropanal, allocimene, cymene, p-cresol, (E)-β-ocimene, acetophenone, and 1-octen-3-ol.

[0029] In certain embodiments, the malodor counteracting composition is added to a plastic material in an amount sufficient to inhibit, reduce or eliminate the perception of malodors associated with the plastic material, particularly recycled plastic materials.

[0030] In a particular embodiment, the malodor neutralizing composition is added to the plastic material in an amount of 0.005-1.0 wt. % based on the total weight of the plastic material. In another particular embodiment, the malodor neutralizing composition is added in an amount of 0.005-0.01 wt. %. In another particular embodiment, the malodor neutralizing composition is added in an amount of 0.01-0.1 wt. %. In another particular embodiment, the malodor neutralizing composition is added in an amount of 0.1-0.3 wt. %.

[0031] In certain embodiments, the malodor counteracting composition is added to the plastic material by incorporating the malodor counteracting composition directly into the plastic material, for example by adding the malodor counteracting composition during the manufacturing process of the plastic material such that the malodor counteracting composition is incorporated into the plastic material.

[0032] In certain embodiments, the malodor neutralizing composition is added to the plastic material by providing the malodor neutralizing composition in the form of a plastic coating. That is, the plastic material is coated with the malodor neutralizing composition. This can be done, for example, by spraying or brushing the malodor neutralizing composition onto the plastic material. In the case of a plastic container, such as a plastic bottle, the interior and / or exterior of the plastic container can be coated with the malodor neutralizing composition according to the present invention. If necessary, the malodor neutralizing composition according to the present invention can be mixed with any additive that aids in the adhesion of the malodor neutralizing composition onto the plastic material.

[0033] In certain embodiments, the malodor counteracting composition is added to a plastic material, while the malodor counteracting composition is included within a base formulation of a consumer product, food or beverage, etc. Thus, the malodor counteracting composition is blended with the consumer product, food or beverage and then the blend is added to the plastic material, especially when the plastic material is a plastic container that can serve as a packaging material for the consumer product, food or beverage containing the malodor counteracting composition according to the present invention.

[0034] In certain embodiments, the method according to the invention removes malodors associated with recycled plastic materials such that the odor impression of the recycled plastic materials resembles the odor impression of virgin plastics.

[0035] Another aspect of the present invention relates to a perfume composition comprising a malodour counteracting composition according to the present invention.

[0036] Apart from the malodour counteracting composition according to the invention the perfuming composition further comprises at least one further perfuming raw material.

[0037] By "perfuming composition" is meant herein a specific mixture of ingredients intended to be added to a composition in order to impart, improve or modify its organoleptic properties, in particular its flavor and / or taste. Flavoring agents are also included in the above definition.

[0038] Perfume raw materials, also called flavoring ingredients, are well known to those skilled in the art, and their nature does not warrant a more detailed description herein, and in any case will not be exhaustive.A skilled flavorist can select them based on general knowledge, and according to the intended use or application and the organoleptic effect that is desired to be achieved.Many of these flavoring ingredients are listed in reference texts such as the book Perfume and Flavor Chemicals, 1969, Montclair, New Jersey, USA, by S. Arctander, or its more recent versions, or in other works of a similar nature, such as Fenaroli's Handbook of Flavor Ingredients, 1975, CRC Press, or MB Jacobs, can Nostrand Co., Inc.'s Synthetic Food Adjuncts, 1947.

[0039] In a particular embodiment, the at least one perfuming raw material is present in the perfuming composition in an amount of 0.01 to 20% by weight of the malodor counteracting composition.

[0040] In certain embodiments, the at least one perfuming raw material is present in an amount of 0.01-20% of the malodor counteracting composition, alternatively 0.01-10, alternatively 0.01-9, alternatively 0.01-8, alternatively 0.01-7, alternatively 0.01-6, alternatively 0.01-5, alternatively 0.01-4, alternatively 0.01-3, alternatively 0.01-2, alternatively 0.01-1, alternatively 0.01-0.5, alternatively 0.0 % by weight, alternatively from 0.01 to 0.4, alternatively from 0.01 to 0.3, alternatively from 0.01 to 0.2, alternatively from 0.01 to 0.1, alternatively from 0.01 to 0.09, alternatively from 0.01 to 0.08, alternatively from 0.01 to 0.07, alternatively from 0.01 to 0.06, alternatively from 0.01 to 0.05, alternatively from 0.01 to 0.04, alternatively from 0.01 to 0.03, alternatively from 0.01 to 0.02% by weight.

[0041] In certain embodiments, the perfume composition further comprises a perfume carrier. A perfume carrier is understood as a material that is substantially neutral from the perfumery point of view, i.e. does not significantly change the organoleptic properties of the perfume ingredients. The carrier may be liquid or solid. As non-limiting examples of liquid carriers, mention may be made of emulsifying systems, i.e. solvent and surfactant systems, or solvents commonly used in perfumery. As non-limiting examples of solid perfume carriers, mention may be made of absorbent gums or polymers, or even encapsulating materials.

[0042] Another aspect of the invention relates to a packaging material comprising a plastic material and a malodour counteracting composition according to the invention.

[0043] In a particular embodiment, the packaging material consists of a plastic material and a malodor counteracting composition according to the present invention.

[0044] In a particular embodiment, the plastic material is made from polyethylene (PE), in particular high density polyethylene (HDPE), or polyethylene terephthalate (PET).

[0045] In a particular embodiment, the plastic material is a recycled plastic material. Preferably, the recycled plastic material is a plastic container suitable for packaging consumer products, food, or beverages. Such recycled plastic containers can be plastic bottles or plastic boxes, preferably plastic bottles. Packaging materials containing recycled plastic materials can have the same odor impression as virgin plastic, i.e. original / non-recycled plastic materials. The odor impression of virgin plastic may be described as soapy, floral powdery, Tupperware-like, and can be determined, for example, by sensory quantitative descriptive analysis (QDA).

[0046] In certain embodiments, the packaging material comprises the malodor counteracting composition in an amount of 0.001 to 1.0 weight percent, based on the total weight of the packaging composition.

[0047] In another particular embodiment, the packaging material comprises the malodor counteracting composition in an amount of 0.005-0.01% by weight.

[0048] In another particular embodiment, the packaging material comprises the malodor counteracting composition in an amount of 0.01-0.1% by weight.

[0049] In another particular embodiment, the packaging material comprises the malodor counteracting composition in an amount of 0.1-0.3% by weight.

[0050] In certain embodiments, the malodor neutralizing composition is present within the plastic material, i.e., the malodor neutralizing composition is embedded within the structure of the plastic material, for example, by adding the malodor neutralizing composition during the manufacturing process of the plastic material, such that the malodor neutralizing composition is incorporated into the plastic material.

[0051] In certain embodiments, the malodor neutralizing composition is present on the surface of the plastic material in the form of a coating. That is, the plastic material is coated with the malodor neutralizing composition. This can be done, for example, by spraying or brushing the malodor neutralizing composition onto the plastic material. In the case of a plastic container, such as a plastic bottle, the inside and / or outside of the plastic container can be coated with the malodor neutralizing composition according to the present invention. If necessary, the malodor neutralizing composition according to the present invention can be mixed with any additive that helps the malodor neutralizing composition adhere to the plastic material surface.

[0052] Another aspect of the present invention relates to consumer products comprising the malodor counteracting composition according to the present invention.

[0053] In certain embodiments, the consumer product is a perfume, a fabric care product, a hair care product, a skin care product, a body deodorant or antiperspirant product, a skin cleansing product, an air freshening product, or a surface care product.

[0054] In a particular embodiment, the consumer product is packaged in a plastic material. Preferably, the plastic material is a recycled plastic material. The plastic material may be a plastic container, such as a plastic bottle or a plastic box, in which the consumer product is packaged. Preferably, the packaging material of the consumer product itself already contains the malodor neutralizing composition according to the present invention. In such a case, both the consumer product and the packaging material contain the malodor neutralizing composition according to the present invention, and less malodor neutralizing composition may be required in each of the individual consumer products and packaging materials. This provides more flexibility with respect to the amount of malodor neutralizing composition present in each of the consumer products and packaging materials.

[0055] Another aspect of the present invention relates to the use of a malodour counteracting composition according to the present invention to reduce or eliminate the perception of malodours associated with plastic materials.

[0056] Another aspect of the present invention relates to the use of a perfuming composition according to the present invention for reducing or eliminating the perception of malodours associated with plastic materials.

[0057] Another aspect of the invention relates to the use of a malodour counteracting composition according to the invention for producing a packaging material.

[0058] Another aspect of the present invention relates to the use of a malodour counteracting composition according to the present invention for producing a consumer product.

[0059] Working Example Example 1: Characterization of odors associated with recycled plastic bottles The odors present in four recycled plastic bottles were identified and characterized using a behavioral sensory evaluation technique known as quantitative descriptive analysis (QDA), developed by Tragon Corporation in 1974. A virgin plastic bottle, i.e., a non-recycled plastic bottle, was used as the control sample. QDA uses a descriptive panel to measure the sensory properties of a product. Panel members use their senses to identify the perceived similarities and differences of the products and articulate their perceptions in their own words.

[0060] To avoid bias, the plastic bottles were covered with odorless black tape. For the sensory evaluation, panelists were instructed to open the lids, crush the bottles several times, and smell them.

[0061] During the language development session, panelists received and described the products, and all generated terms were then rated on a 6-point nonlinear scale ranging from 0 (no odor detected) to 5 (strong odor).

[0062] A total of 13 sensory terms were identified as important in describing the odors of the five plastic bottles. The sensory list of attributes is as follows: [Table 1]

[0063] Each product was then evaluated in triplicate against a control sample (virgin plastic) using a 10 cm semi-structured intensity scale to obtain a sufficient data set for statistical analysis.

[0064] Figure 1 shows the sensory evaluation of the virgin plastic (control sample), which exhibited a neutral odor, characterized mainly by Tupperware and floral powdery odors.

[0065] The sensory evaluation of the first recycled plastic bottle is shown in Figure 2. The evaluation showed significantly (p ≤ 0.05) stronger odor impressions for black garbage bag, cooking oil, and nutty notes, with a stronger tendency (p ≤ 0.1) for smoky barbecue odor and food waste odor compared to the control sample.

[0066] The sensory evaluation of the second recycled plastic bottle is shown in Figure 3. This evaluation showed significantly (p ≤ 0.05) stronger odor impressions for notes of tar / tyre, smoky barbecue, ashtray, moisture, rubber and black trash bag compared to the control sample.

[0067] Figure 4 shows the sensory evaluation of the third recycled plastic bottle, which showed significantly (p≦0.05) stronger odor impressions for tar / tyre, smoky barbecue, ashtray, food waste, rubber, and black trash bag compared to the control sample.

[0068] The sensory evaluation of the fourth recycled plastic bottle is shown in Figure 5. The evaluation showed significantly (p ≤ 0.05) stronger odor impressions for notes of tar / tyres, smoky barbecue, food waste, cooking oil, ashtray, rubber and black trash bag compared to the control sample.

[0069] Example 2: Identifying compounds that may be responsible for the odors in recycled plastic bottles Odor-sniffing gas chromatography / mass spectrometry was used to investigate malodorous compounds in the four recycled plastic bottles previously mentioned in Example 1.

[0070] Compounds were first adsorbed onto the SPME fiber and desorbed into a gas chromatography column. This split the eluted compounds so that a portion of the compounds traveled toward the mass spectrometry detector and the other portion traveled to an olfactory port, allowing panelists to smell the compounds as they left the column. After smelling the odorous compounds, panelists described the odor characteristics and intensity. Both detectors were used simultaneously, allowing compounds to be smelled at the same time they entered the mass spectrometer, allowing for the identification of individual compounds in complex mixtures.

[0071] In the control sample (virgin plastic), the following compounds were identified: [Table 2]

[0072] In the first recycled plastic bottle, the following compounds were identified: [Table 3]

[0073] In the second recycled plastic bottle, the following compounds were identified: [Table 4]

[0074] In the third recycled plastic bottle, the following compounds were identified: [Table 5]

[0075] In the fourth recycled plastic bottle, the following compounds were identified: [Table 6]

[0076] Example 3: Reducing the odor of recycled plastic bottles The fourth recycled plastic bottles mentioned in Examples 1 and 2, respectively, which exhibited the highest malodor intensity among the recycled plastic bottles evaluated, were treated with the malodor counteracting composition in that the interior of the recycled plastic bottle was uniformly coated with the malodor counteracting composition.

[0077] The malodor counteracting composition used had the following formulation: · 7.02% by weight of undecenal; 1.75% by weight of dodecanal; 0.88% by weight of 10-undecenal, (E)-9-undecenal, and a mixture of 10-undecenal, (Z)-9-undecenal; 3.51% by weight of (-)-(5R)-5-isopropenyl-2-methyl-2-cyclohexen-1-one; 3.51% by weight of (+ / -)-3,6,8,8-tetramethyloctahydro-1H-3a,7-methanoazulen-6-ol; · 5.26% by weight of 3,7-dimethyl-2,6-octadienal; 7.02% by weight of (+ / -)-3,7-dimethyl-6-octen-1-ol; 0.88% by weight of (-)-(R)-3,7-dimethyl-6-octenenitrile; 1.75% by weight of (+ / -)-(2E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one; 35.09% by weight of (+ / -)-tetrahydro-2-isobutyl-2-methyl-4(2H)-pyranol; 26.32% by weight of a mixture of (+ / -)-(3E)-3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one and (+ / -)-(1E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-penten-3-one; 0.88% by weight of 5-methyl-2-(2-propanyl)cyclohexanone; 0.88% by weight of (+ / -)-3-phenylbutanal; 4.39% by weight of (3E)-4-(2,6,6-trimethyl-1 / 2-cyclohexen-1-yl)-3-buten-2-one; 0.88% by weight of dodecahydro-3,8,8,11a-tetramethyl-5H-3,5a-epoxynaphtho[2,1-c]oxepin.

[0078] An expert panel then evaluated the malodor intensity after treating (coating) the recycled plastic bottles with the malodor neutralizing composition described above. As can be observed from Figure 6 (comparison of the first vertical bar (before treatment) and the second (middle) vertical bar), after treatment with the malodor neutralizing composition, the malodor intensity was reduced from 6 to 4. Thus, a significant reduction in the perception of malodor in the recycled plastic bottles could be achieved by treatment with the malodor neutralizing composition described above (referred to as "first treatment" in Figure 6).

[0079] In a further experiment (second treatment), a fourth recycled plastic bottle was treated with another malodor counteracting composition, in that the interior of the recycled plastic bottle was uniformly coated with the malodor counteracting composition.

[0080] The malodor counteracting composition used had the following formulation: 2% by weight of (+ / -)-5-heptyldihydro-2(3H)-furanone; · 22% by weight of benzyl benzoate; 1% by weight of 4-methyl-2,6-bis(2-methyl-2-propanyl)phenol; ·20% by weight of triethyl citrate; 0.01% by weight of 2-ethyl-3-hydroxy-4(4H)-pyranone; 0.1% by weight of (+ / -)-3-(3-isopropyl-1-phenyl)butanal; 20% by weight of 1-oxa-12 / 13-cyclohexidecen-2-one; 0.5% by weight of (+ / -)-(2,5-dimethyl-2,3-dihydro-1H-inden-2-yl)methanol; · 16.39% by weight of isopropyl myristate; 2% by weight of (+ / -)-3-methyl-5-phenyl-1-pentanol; 8% by weight of 3-(dodecylthio)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-1-butanone; 1% by weight of 2-(2H-1,2,3-benzotriazol-2-yl)-6-dodecyl-4-methylphenol; 5% by weight of 2,2',2''-nitrilotriethanol; 2% by weight of (3E)-4-(2,6,6-trimethyl-1 / 2-cyclohexen-1-yl)-3-buten-2-one.

[0081] As can be observed from Figure 6 (comparison of the first vertical bar (before treatment) with the second, third and fourth vertical bars (right-hand vertical bars)), after treatment with the different malodour counteracting compositions the malodour intensity was reduced from 6 to 2, with the Neutramove MOC3 accord being the best MOC performance. Thus, a significant reduction in the perception of malodour of recycled plastic bottles could be achieved by treatment with the above mentioned malodour counteracting compositions.

Claims

1. A method for suppressing, reducing or removing the perception of malodor associated with a plastic material, said method comprising the step of adding a malodor neutralizing composition to the plastic material.

2. The method according to claim 1, wherein the malodor neutralizing composition is added to the plastic material in an amount of 0.005 to 1% by weight based on the total weight of the plastic material.

3. The malodor-neutralizing composition contains undecanal, dodecanal, 10-undecenal, (E / Z)-9-undecenal, (-)-(5R)-5-isopropenyl-2-methyl-2-cyclohexen-1-one, (+ / -)-3,6,8,8-tetramethyloctahydro-1H-3a,7-methanoazulen-6-ol, 3,7-dimethyl-2,6-octadienal, (+ / -)-3,7-dimethyl-6-octen-1-ol, (-)-(R)-3,7-dimethyl-6-octenenitrile, (+ / -)-(2E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one, (+ / -)-(3E)-3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, (+ / -)-(1E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-penten-3-one, 5-methyl-2-(2-propanyl)cyclohexanone, isopropyl myristate, (+ / -)-tetrahydro-2-isobutyl-2-methyl-4(2H)-pyranol, (+ / -)-3-phenylbutanal, (3E)-4-(2,6,6-trimethyl-1 / 2-cyclohexen-1-yl)-3-buten-2-one, dodecahydro-3,8,8,11a-tetramethyl-5H-3,5a-epoxynaphtho[2,1-c]oxepin, (+ / -)-5-heptyldihydro-2(3H)-furanone, benzyl benzoate, 4-methyl-2,6-bis(2-methyl-2-propanyl)phenol, triethyl citrate, 2-ethyl-3-hydroxy-4(4H)-pyranone, (+ / -)-3-(3-isopropyl-1-phenyl)butanal, 1-oxa-12 / 13-cyclohexadecene-2-one, (+ / -)-(2,5-dimethyl-2,3-dihydro-1H-inden-2-yl)methanol, (+ / -)-3-methyl-5-phenyl-1-pentanol, 3-(dodecylthio)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-1-butanone, 2-(2H-1,2,3-benzotriazol-2-yl)-6-dodecyl-4-methylphenol, 2,2',2''-nitrilotriethanol, benzyl acetate, (1R,2R)-1,7,7-trimethyl-bicyclo[2.2.1]hept-2-yl acetate, (+ / -)-2-(4-methyl-3-cyclohexen-1-yl)-2-propanyl acetate, acetophenone, 1-hexanol, (+ / -)-2-methylundecanal, methyl 2-aminobenzoate, (1S,2S,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol, (1S,2R,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol, (+ / -)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-one, (+ / -)-1-octen-3-ol, Virginia cedarwood oil, (3aRS,5aSR,9aSR,9bRS)-3a,6,6,9a-tetramethyldodecahydronaphtho[2,1-b]furan, tricyclo[5.2.1.02,6]dec-3 / 4-en-8-yl acetate, 2-chromenone, (2E)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-2-buten-1-one, (+ / -)-2,6-dimethyl-7-octen-2-ol, (+ / -)-3,7-dimethyl-1-octanol, 1,1'-oxydibenzene, dipropylene glycol, 5-methyl-3-heptanone, 3-ethoxy-4-hydroxybenzaldehyde, 3,7-dimethyl-2,6-octadien-1-ol, clove leaf oil, (Z)-3,4,5,6,6-pentamethylhept-3-en-2-one, 3,6-dimethylhexahydro-1-benzofuran-2(3H)-one, (+-)-3,7-dimethyl-1,6-octadien-3-ol, (+ / -)-2,6-dimethyl-5-heptenal, 6-methyl-5-hepten-2-one, 2-octanone, 2-heptanone, 1-(5,5-dimethyl-1-cyclohexen-1-yl)-4-penten-1-one, Alaska cedarwood oil, patchouli oil, (2E,6Z)-2,6-nonadienal, beta-pinene, (3Z)-3-hexen-1-ol, pyrazobutyl, 4-(2-methyl-2-propanyl)cyclohexanol, (+ / -)-alpha-terpineol, 2-(2-methyl-2-propanyl)cyclohexyl acetate, acetyl cedrene, 2-methyl-3-hexanone oxime, 2-methoxynaphthalene, 1,4-epoxy-p-menthane, 1,The method according to claim 1 or 2, comprising a compound selected from the group consisting of 8-epoxy-p-menthane, or any mixture thereof.

4. The method according to claim 1 or 2, wherein the plastic material is a recycled plastic material, preferably a recycled plastic bottle.

5. The method according to claim 1 or 2, wherein the plastic material contains a malodorous compound selected from the group consisting of 1-octen-3-ol, (E)-3,7-dimethyl-1,3,6-octatriene, acetophenone, cymene, 2,6-dimethyl-2,4,6-octatriene, estragole, p-α-dimethylstyrene, or any mixture thereof.

6. The method according to claim 1 or 2, wherein the plastic material gives at least one malodorous impression selected from the group consisting of a moist impression, a nutty impression, an impression like oil after cooking, a rubbery impression, an ashtray-like impression, a tar-like impression, and a raw garbage-like impression.

7. The method according to claim 1 or 2, wherein the malodor neutralizing composition is added to the plastic material by incorporating the malodor neutralizing composition into the plastic material and / or by supplying the malodor neutralizing composition in the form of a plastic coating.

8. Undecanal, dodecanal, 10-undecenal, (E / Z)-9-undecenal, (-)-(5R)-5-isopropenyl-2-methyl-2-cyclohexen-1-one, (+ / -)-3,6,8,8-tetramethyloctahydro-1H-3a,7-methanoazulen-6-ol, 3,7-dimethyl-2,6-octadienal, (+ / -)-3,7-dimethyl-6-octen-1-ol, (-)-(R)-3,7-dimethyl-6-octenenitrile, (+ / -)-(2E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one, (+ / -)-(3E)-3-methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, (+ / -)-(1E)-1-(2,6,6-trimethyl-2-cyclohexen-1-yl)-1-penten-3-one, 5-methyl-2-(2-propanyl)cyclohexanone, isopropyl myristate, (+ / -)-tetrahydro-2-isobutyl-2-methyl-4(2H)-pyranol, (+ / -)-3-phenylbutanal, (3E)-4-(2,6,6-trimethyl-1 / 2-cyclohexen-1-yl)-3-buten-2-one, dodecahydro-3,8,8,11a-tetramethyl-5H-3,5a-epoxynaphtho[2,1-c]oxepin, (+ / -)-5-heptyldihydro-2(3H)-furanone, benzyl benzoate, 4-methyl-2,6-bis(2-methyl-2-propanyl)phenol, triethyl citrate, 2-ethyl-3-hydroxy-4(4H)-pyranone, (+ / -)-3-(3-isopropyl-1-phenyl)butanal, 1-oxa-12 / 13-cyclohexadecene-2-one, (+ / -)-(2,5-dimethyl-2,3-dihydro-1H-inden-2-yl)methanol, (+ / -)-3-methyl-5-phenyl-1-pentanol, 3-(dodecylthio)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-1-butanone, 2-(2H-1,2,3-benzotriazol-2-yl)-6-dodecyl-4-methylphenol, 2,2',2''-nitrilotriethanol, benzyl acetate, (1R,2R)-1,7,7-trimethyl-bicyclo[2.2.1]hept-2-yl acetate, (+ / -)-2-(4-methyl-3-cyclohexen-1-yl)-2-propanyl acetate, acetophenone, 1-hexanol, (+ / -)-2-methylundecanal, methyl 2-aminobenzoate, (1S,2S,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol, (1S,2R,4S)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol, (+ / -)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-one, (+ / -)-1-octen-3-ol, Virginia cedarwood oil, (3aRS,5aSR,9aSR,9bRS)-3a,6,6,9a-tetramethyldodecahydronaphtho[2,1-b]furan, tricyclo[5.2.1.02,6]dec-3 / 4-ene-8-yl acetate, 2-chromenone, (2E)-1-[(1RS,2SR)-2,6,6-trimethyl-3-cyclohexen-1-yl]-2-buten-1-one, (+ / -)-2,6-dimethyl-7-octen-2-ol, (+ / -)-3,7-dimethyl-1-octanol, 1,1'-oxydibenzene, dipropylene glycol, 5-methyl-3-heptanone, 3-ethoxy-4-hydroxybenzaldehyde, 3,7-dimethyl-2,6-octadien-1-ol, clove leaf oil, (Z)-3,4,5,6,6-pentamethylhept-3-en-2-one, 3,6-dimethylhexahydro-1-benzofuran-2(3H)-one, (+-)-3,7-dimethyl-1,6-octadien-3-ol, (+ / -)-2,6-dimethyl-5-heptenal, 6-methyl-5-hepten-2-one, 2-octanone, 2-heptanone, 1-(5,5-dimethyl-1-cyclohexen-1-yl)-4-penten-1-one, Alaska cedarwood oil, patchouli oil, (2E,6Z)-2,6-nonadienal, beta-pinene, (3Z)-3-hexen-1-ol, pyrazobutyl, 4-(2-methyl-2-propanyl)cyclohexanol, (+ / -)-alpha-terpineol, 2-(2-methyl-2-propanyl)cyclohexyl acetate, acetyl cedrene, 2-methyl-3-hexanone oxime, 2-methoxynaphthalene, 1,4-epoxy-p-menthane, 1,An odor-neutralizing composition comprising a compound selected from the group consisting of 8-epoxy-p-menthane, or any mixture thereof.,

9. A flavoring composition comprising the malodor neutralizing composition according to claim 8.

10. A packaging material comprising a plastic material and the malodor neutralizing composition according to claim 8 or the flavoring composition according to claim 9.

11. The packaging material according to claim 10, wherein the plastic material is a recycled plastic material, preferably a recycled plastic bottle.

12. The packaging material according to claim 10, wherein the malodor neutralizing composition is present on the surface of the plastic material in the form of a coating.

13. The packaging material according to claim 10, wherein the malodor neutralizing composition is present in an amount of 0.001 to 1.0% by weight based on the total weight of the packaging composition.

14. A consumer product comprising the malodor neutralizing composition according to claim 8 or the flavoring composition according to claim 9.

15. Use of the malodor-neutralizing composition according to claim 8 for reducing or eliminating the perception of malodor associated with plastic materials.

Images