Patent Grant
11597895
This application is a national stage application (under 35 U.S.C. § 371) of PCT/EP2017/082840, filed Dec. 14, 2017, which is incorporated herein by reference in its entirety.
The present invention relates primarily to fragrance substance mixtures, preferably perfume oils, comprising or consisting of (a) 8,8-dimethyl-6,10-dioxaspiro[4,5]decane, i.e. a compound of formula (I) as described herein, and additionally (b) one or more fragrance substance(s), preferably with a fruity olfactory note, selected from the group consisting of esters, lactones, oximes and sulphur compounds with a molar mass of 240 g/mol or less and/or (c) one or more fragrance substance(s) selected from the group consisting of acetals, ketones and ethers with a molar mass in the range of 126-240 g/mol. The invention further relates to methods for the production of fragrance substance mixtures according to the invention, methods for enhancing the natural freshness and/or radiance and/or for masking or reducing sulphurous, artificial and/or metallic notes of one or more fragrance substances different from the compound of formula (I), perfumed products containing a fragrance substance mixture according to the invention, methods for producing perfumed products according to the invention and the use of the compound of formula (I) for enhancing the natural freshness and/or radiance and/or for masking and/or reducing sulphurous, artificial and/or metallic notes of one or more fragrance substances different from the compound of formula (I).
Further aspects and preferred embodiments of the present invention result from the following explanations, the attached examples and in particular the attached patent claims.
The compound of formula (I) (8,8-dimethyl-6,10-dioxaspiro[4.5]decane, CAS Nr.: 702-75-0)
is known to the skilled person, for example, from the publication Perfumery and Essential Oil Record (1966), 57(7), 427-33, which also reveals an odour description of the compound of formula (I). The odour of the compound of formula (I) is described therein as minty of isopulegol and floral of geranium. In perfumery, however, the compound of formula (I) has so far not been used to any significant extent.
It is also known that the compound of formula (I) can be prepared from cyclopentanone and 2,2-dimethyl-1,3-propanediol, for example, by acetalization:
Fruit fragrances in particular play an important role in perfumery and are therefore in great demand in the perfume industry. In addition, there is a constant need to emphasize (accentuate) certain olfactory aspects of a fragrance substance or a fragrance substance mixture; in the case of fruit fragrances, this applies in particular to their natural freshness and radiance. There is also a constant need to mask or reduce certain olfactory aspects of a fragrance substance or a fragrance substance mixture, in particular sulphurous, artificial and metallic notes in the case of fruit fragrance substances.
The primary object was therefore to find (fragrance) substances or (fragrance) substance mixtures which meet the above-mentioned requirements, i.e. which are capable of emphasizing certain pleasant olfactory aspects of a (particularly fruity) fragrance substance/fragrance substance mixture and/or of masking or reducing certain unpleasant olfactory aspects of a (particularly fruity) fragrance substance/fragrance substance mixture.
This object is surprisingly solved by a fragrance substance mixture, preferably a perfume oil, comprising or consisting of the following components:
and additionally
Fragrance substance mixtures according to the invention are preferably liquid at 25° C. and 1013 hPa and are usually homogeneous solutions.
According to one embodiment, the fragrance substance mixture according to the invention may comprise or consist of the components (b) and (c) in addition to the component (a). According to a further, alternative embodiment, the fragrance substance mixture according to the invention may comprise or consist of either only component (b) or only component (c) in addition to component (a).
Surprisingly, in a fragrance substance mixture according to the invention, the compound of formula (I) has the effect of emphasizing certain (pleasant) olfactory aspects of the fragrance substance(s) of component (b) and/or the fragrance substance(s) of component (c) and/or of masking or reducing certain (unpleasant) olfactory aspects thereof. In particular, sulphurous, artificial and/or metallic notes of the fragrance substance(s) of components (b) and/or (c) are effectively masked or reduced by the compound of formula (I).
Surprisingly, it has also been shown that the compound of formula (I) has, in addition to its primary sensory properties, additional positive secondary properties, such as high stability under certain conditions of use, preferably in alkaline media (washing powder, fabric softener, soap, shampoo, etc.).
In a fragrance substance composition (e.g. a perfume oil) according to the invention, the person skilled in the art will select the proportion of component (a), i.e. the proportion of the compound of formula (I), in such a way that the desired effect of emphasizing (highlighting) and/or masking or reducing of an olfactory note is achieved, taking care not to use too large an amount of component (a) which could dominate the overall sensory impression of a fragrance substance mixture, and on the other hand not to provide only such a small amount of component (a) that an emphasizing and/or masking/reducing of olfactory aspects of fragrance substances of component (b) or (c) is not or hardly noticeable. For preferred concentration ratios, see the explanations below and the examples attached.
In fragrance substance mixtures according to the invention, the compound of formula (I) is of course used at least in such an amount that a sensory effect is achieved. A sensory effect is achieved by the presence of the compound of formula (I) if a comparative fragrance substance mixture which does not contain a compound of formula (I) with otherwise identical composition is assessed sensorially differently from the fragrance substance mixture according to the invention.
Preferably the compound of formula (I) is used in a fragrance substance mixture according to the invention in such a concentration that the sensory impression of the fragrance substance mixture according to the invention is more natural, fresh, fruity, more radiant, less sulphurous, artificial and metallic than the sensory impression of a comparative fragrance substance mixture which does not contain a compound of formula (I) with otherwise identical composition.
Component (b) of the fragrance substance mixture according to the invention, if present, comprises one or more fragrance substances selected from the group consisting of esters, lactones, oximes and sulphur compounds having a molar mass of 240 g/mol or less. Preferably these fragrance substances have a fruity olfactory note. Such fragrance substances are known to the skilled person; esters, lactones, oximes and sulphur compounds (also those with a fruity olfactory note) represent a very important group of fragrance substances in perfumery.
Surprisingly, the sensory properties of fragrance substances of component (b) are positively influenced by combination with an amount of the compound of formula (I). In individual cases, the sensory impression is preferably shifted in the direction of more natural, fresh, more radiant, less sulphurous, artificial and metallic, although other sensory influences can of course also be observed in individual cases. Detailed descriptions of odours can be found in the attached examples.
The fragrance substances of component (c), if present, regularly function as base notes of a fragrance substances mixture according to the invention or a perfume oil according to the invention. The fragrance substances of component (c) of the fragrance substance mixture according to the invention are acetals, ketones and ethers, with a molar mass in the range of 126-240 g/mol.
If certain fragrance substances contained in the fragrance substance mixture according to the invention have several functional groups, so that they exceptionally fall under component (b) and component (c) at the same time, these are preferably assigned—in particular for the purpose of determining the preferred amounts or mass ratios described herein—50% by weight to component (b) and 50% by weight to component (c), unless indicated otherwise in individual cases.
Fragrance substance mixtures according to the invention, in particular perfume oils according to the invention, can be used in liquid form, undiluted or diluted with a solvent for perfuming or aromatizing. Suitable solvents for this purpose are in particular ethanol, glycerol, 1,2-propylene glycol, 1,2-butylene glycol, dipropylene glycol, diethyl phthalate, triethyl citrate, isopropyl myristate and triacetin.
Ethers and esters having a molar mass of 240 g/mol or less are not counted as components (b) or (c) provided that they are a compound selected from the group consisting of dipropylene glycol, diethyl phthalate and triacetin.
Preferably fragrance substance mixtures according to the invention, preferably perfume oils according to the invention, are combined with further components. Preferred further components are selected from the group consisting of:
Preservatives, preferably those mentioned in US 2006/0089413, abrasives, anti-acne agents and agents for sebum reduction, preferably those mentioned in WO 2008/046791, agents against skin aging, preferably those mentioned in WO 2005/123101, antibacterial agents, anti-cellulite agents, anti-dandruff agents, preferably those mentioned in WO 2008/046795, anti-inflammatory agents, irritation-preventing agents, anti-irritants (anti-inflammatory, irritation-inhibiting and irritation-preventing agents), preferably those mentioned in WO 2007/042472 and US 2006/0089413, antimicrobial agents, preferably those mentioned in WO 2005/123101, antioxidants, preferably those mentioned in WO 2005/123101, astringents, antiseptic agents, antistatic agents, binders, buffers, carrier materials, preferably those mentioned in WO 2005/123101, chelate formers, preferably those mentioned in WO 2005/123101, cell stimulants, cleansing agents, caring agents, depilatories, surface-active substances, deodorants and antiperspirants, preferably those mentioned in WO 2005/123101, plasticizers, emulsifiers, preferably those mentioned in WO 2005/123101, enzymes, essential oils, preferably those mentioned in US 2008/0070825, insect repellents, preferably those mentioned in WO 2005/123101, fibers, film formers, fixatives, foaming agents, foam stabilizers, foam inhibitors, foam boosters, fungicides, gelling agents and gel-forming agents, preferably those mentioned in WO 2005/123101, hair care agents, hair shaping agents, hair straightening agents, moisture regulators (moisturising, moistening and/or moisture-retaining substances), preferably those mentioned in WO 2005/123101, osmolytes, preferably those mentioned in WO 2005/123101, compatible solutes, preferably those mentioned in WO 01/76572 and WO 02/15686, bleaching agents, strengthening agents, stain-removing agents, optical brightening agents, impregnating agents, dirt-repellent agents, friction reducing agents, lubricants, moisturising creams, ointments, opacifiers, plasticising agents, covering agents, polish, glazing agent, polymers, preferably those mentioned in WO 2008/046676, powders, proteins and protein hydrolysates, preferably those mentioned in WO 2005/123101 and WO 2008/046676, refatting agents, abrasive agents, skin soothing agents, skin cleansing agents, skin care agents, skin repair agents, preferably containing cholesterol and/or fatty acids and/or ceramides and/or pseudoceramides, thereby preferably those mentioned in WO 2006/053912, skin lightening agents, preferably those mentioned in WO 2007/110415, skin protecting agents, skin softening agents, skin cooling agents, preferably those mentioned in WO 2005/123101, skin warming agents, preferably those mentioned in WO 2005/123101, stabilizers, UV absorbing agents and UV filters, preferably those mentioned in WO 2005/123101, benzylidene beta-dicarbonyl compounds, preferably those mentioned in WO 2005/107692, alpha-benzoyl cinnamic acid nitriles, preferably those mentioned in WO 2006/015954, AhR receptor antagonists, preferably those mentioned in WO 2007/128723 and WO 2007/060256, detergents, fabric softeners, suspending agents, skin tanning agents, preferably those mentioned in WO 2006/045760, thickening agents, vitamins, preferably those mentioned in WO 2005/123101, oils, waxes and fats, preferably those mentioned in WO 2005/123101, phospholipids, preferably those mentioned in WO 2005/123101, fatty acids (saturated fatty acids, mono- or polyunsaturated fatty acids, α-hydroxy acids, polyhydroxy fatty acids), preferably those mentioned in WO 2005/123101, liquefiers, dyes and colour-protecting agents as well as pigments, preferably those mentioned in WO 2005/123101, anti-corrosives, aroma and flavour substances as well as further additional fragrance substances, preferably those listed in S. Arctander, Perfume and Flavor Chemicals, self-published, Montclair, N.J., 1969 and Surburg, Panten, Common Fragrance and Flavor Materials, 5th Edition, Wiley-VCH, Weinheim 2006, in particular the further fragrance substances explicitly mentioned in US 2008/0070825, which are not already part of the components (b) or (c) of a fragrance substance mixture according to the invention or of a perfume oil according to the invention, alcohols and polyols, preferably those mentioned in WO 2005/123101, surfactants, preferably those mentioned in WO 2005/123101, animal extracts, yeast extracts, extracts of algae or microalgae, electrolytes, liquefiers, organic solvents, preferably those mentioned in WO 2005/123101, or silicones and silicone derivatives, preferably those mentioned in WO 2008/046676.
However, compounds which fall under the definition of components (b) and/or (c) are assigned to these components regardless of their intended use; for exceptions for certain solvents see above.
Furthermore, fragrance substance mixtures according to the invention, in particular perfume oils according to the invention, may be adsorbed on a carrier which ensures both a fine distribution of the fragrance substances contained therein in the product and a controlled release during use. Such carriers may be porous inorganic materials such as light sulphate, silica gels, zeolites, gypsum, clays, clay granules, aerated concrete, etc. or organic materials such as woods, cellulose-based materials, sugars, dextrins (e.g. maltodextrin) or plastics such as PVC, polyvinyl acetates or polyurethanes.
Fragrance substance mixtures according to the invention, in particular perfume oils according to the invention, can also be present microencapsulated, spray-dried, as inclusion complexes or as extrusion products and can be added in this form e.g. to a perfumed product (as described further below).
If necessary, the properties of the compositions modified in this way can be further optimised by so-called “coating” with suitable materials with a view to more targeted fragrance release, preferably using waxy plastics such as e.g. polyvinyl alcohol.
The microencapsulation of the fragrance substance mixtures according to the invention, preferably of the perfume oils according to the invention, can be carried out, for example, by the so-called coacervation process using capsule materials, e.g. made of polyurethane-like substances or soft gelatine. The spray-dried fragrance substance compositions can be produced, for example, by spray-drying an emulsion or dispersion containing the fragrance substance mixture according to the invention, preferably a perfume oil, whereby modified starches, proteins, dextrin and vegetable gums can be used as carriers. Inclusion complexes can be prepared, for example, by incorporating dispersions of the fragrance substance mixture according to the invention, preferably a perfume oil according to the invention, and cyclodextrins or urea derivatives in a suitable solvent, e.g. water. Extrusion products can be obtained by fusing a fragrance substance mixture according to the invention, preferably a perfume oil according to the invention, with a suitable waxy substance and by extrusion with subsequent solidification, if necessary in a suitable solvent, e.g. isopropanol.
A fragrance substance mixture according to the invention as described herein, wherein component (b) comprises two, three, four, five or more different fragrance substances and/or component (c) comprises two, three, four, five or more different fragrance substances, is preferred.
Particularly preferred is a fragrance substance mixture according to the invention as described herein, wherein the mass ratio of the total amount of fragrance substance(s) of component (b), if present, to the compound of formula (I) is greater than or equal to 40:60, preferably greater than or equal to 80:20, more preferably greater than or equal to 99:1, and/or the mass ratio of the total amount of fragrance substance(s) of component (c), if present, to the compound of formula (I) is greater than or equal to 60:40, preferably greater than or equal to 80:20, more preferably greater than or equal to 90:10.
Our own investigations have shown that these mass ratios are particularly advantageous. At these mass ratios, the intrinsic odour of the compound of formula (I) is regularly no longer or hardly perceptible, but the presence of the compound of formula (I) has a positive effect on the overall note of the fragrance substance mixture according to the invention. It is particularly surprising that the compound of formula (I), even in low concentrations, has an effect on the freshness and radiance of the fragrance substance mixture according to the invention, without itself producing or emphasizing a fruity odour to any relevant degree.
Furthermore, a fragrance substance mixture according to the invention as described herein is particularly preferred, wherein the, one, several or all fragrance substance(s) of component (b), if present, has/have a molar mass in the range of 130 to 240 g/mol.
Preferred is also a fragrance substance mixture according to the invention as described herein, wherein the, one, several or all of the fragrance substance(s) of component (b), if present, is/are selected are selected from the group consisting of allyl capronate, allylcyclohexyl propionate, 5-hexyl-4-methyl-tetrahydrofuran-2-one, ethyl-2-cyclopent-2-en-1-yl acetate, 1-cyclohexylethyl-(E/Z)-but-2-enoate, 1,5-dimethylbicyclo[3.2.1]octan-8-one oxime, 2,4,6-trimethyl-4-phenyl-1,3-dioxane, 2-methyl-4-propyl-1,3-oxathiane, isopentyl acetate, ethyl-2-(2,4-dimethyl-1,3-dioxolan-2-yl)acetate, ethyl-2-methyl butanoate, (2-cyclopentylcyclopentyl)-(E/Z)-but-2-enoate, 4-methoxy-2-methyl-butane-2-thiol, 1,3-di methylbutyl-(E/Z)-but-2-enoate, 1,3-dimethylbut-3-enyl-2-methylpropanoate, 1-methoxyhexane-3-thiol, 4-isopropyl-1-methyl-7-thiabicyclo[2.2.1]heptane, 2-(4-methylcyclohex-3-en-1-yl)propane-2-thiol, 5-methyl-2-(1-methyl-1-sulfanyl-ethyl)cyclohexanone, (1,3-di methyl-3-phenyl-butyl)acetate, allyl-2-isopentyloxyacetate, 5-butyltetrahydrofuran-2-one, 5-pentyltetrahydrofuran-2-one, 5-heptyltetrahydrofuran-2-one, 5-octyltetrahydrofuran-2-one, 5-hexyltetrahydrofuran-2-one, ethyl-2-(2-methyl-1,3-dioxolan-2-yl)acetate and diethylcyclohexan-1,4-dicarboxylate,
and/or
the, one, several or all of the fragrance substance(s) of component (c), if present, is/are selected are selected from the group consisting of 1-(2,6,6-trimethylcyclohex-2-en-1-yl)hepta-1,6-dien-3-one, 1-(2,6,6-trimethylcyclohex-2-en-1-yl)but-2-en-1-one, 1-(2,6,6-trimethylcyclohexen-1-yl)but-2-en-1-one, 1-(2,6,6-trimethylcyclohex-3-en-1-yl)but-2-en-1-one, 1-(2,4,4-trimethylcyclohex-2-en-1-yl)but-2-en-1-one, 1-methyl-4-(2,2,3-trimethylcyclopent-3-en-1-yl)-2-oxabicyclo[2.2.2]octane, 4-(4-methoxyphenyl)-butan-2-one, 5-methylhept-2-en-4-one, 6,6-dimethoxy-2,5,5-trimethyl-hex-2-ene and 2,4,6-trimethyl-4-phenyl-1,3-dioxane.
Fragrance substance mixtures according to the invention, preferably perfume oils according to the invention, are particularly preferred, wherein the, one, several or all of the fragrance substance(s) of component (b), is/are selected are selected from the group consisting of allyl capronate, allylcyclohexyl propionate, 5-hexyl-4-methyl-tetrahydrofuran-2-one, ethyl-2-cyclopent-2-en-1-yl acetate, 1-cyclohexylethyl-(E/Z)-but-2-enoate, 1,5-dimethylbicyclo[3.2.1]octan-8-one oxime, 2-methyl-4-propyl-1,3-oxathiane, isopentyl acetate, ethyl-2-(2,4-dimethyl-1,3-dioxolan-2-yl)acetate, ethyl-2-methylbutanoate, (2-cyclopentylcyclopentyl)-(E/Z)-but-2-enoate, 4-methoxy-2-methyl-butane-2-thiol, 1-methoxyhexane-3-thiol, 4-isopropyl-1-methyl-7-thiabicyclo[2.2.1]heptane, 2-(4-methylcyclohex-3-en-1-yl)propane-2-thiol.
Particularly preferred are fragrance substance mixtures according to the invention, preferably perfume oils according to the invention, as described herein, in which the component (b) is an ester or a sulphur compound.
Further examples of fragrance substances which may be part of component (c) are known to the person skilled in the art and can be found for example in S. Arctander, Perfume and Flavor Materials, Vol. I and II, Montclair, N.J., 1969, self-published or H. Surburg, J. Panten, “Common Fragrance and Flavor Materials”, 5th ed., Wiley-VCH, Weinheim 2006.
A further aspect of the present invention relates to a method for the production of a fragrance substance mixture according to the invention, preferably of a perfume oil, as described herein, comprising or consisting of the following step:
A method as described herein, resulting in a fragrance substance mixture according to the invention (as described herein), preferably a perfume oil, is preferred, in which
Another aspect of the present invention relates to a method for enhancing the natural freshness and/or radiance and/or for masking or reducing sulphurous, artificial and/or metallic notes of one or more fragrance substances different from the compound of formula (I), preferably of one or more fragrance substances different from the compound of formula (I) having a fruity olfactory note, comprising the following step:
Particularly preferred is a method as described herein, wherein the, one, several or all of the fragrance substance(s) different from the compound of formula (I) is/are selected from the components (b) and/or (c) of a fragrance substance mixture according to the invention (as described herein).
Further preferred is a method as described herein, wherein
The above statements on (preferred) fragrance substance mixtures according to the invention apply accordingly to the methods according to the invention.
Another aspect of the present invention relates to a perfumed product containing a fragrance substance mixture according to the invention, preferably a perfume oil, as described herein, preferably in a sensorially effective amount.
“Sensorially effective amount” means in the present context that the perfumed product according to the invention reveals the sensory properties of the fragrance substance mixture according to the invention during operation or use.
Preferred perfumed products according to the invention are selected from the group consisting of perfume extracts, eau de parfums, eau de toilettes, aftershaves, eau de colognes, pre-shave products, splash colognes, perfumed refreshing cloths, acidic, alkaline and neutral detergents, textile fresheners, ironing aids, liquid detergents, powdered detergents, laundry pre-treatment agents, fabric softeners, washing soaps, washing tablets, disinfectants, surface disinfectants, air fresheners, aerosol sprays, waxes and polishes, personal care products, hand creams and lotions, foot creams and lotions, depilatory creams and lotions, aftershave creams and lotions, tanning creams and lotions, hair care products, deodorants and antiperspirants, decorative cosmetic products, candles, lamp oils, incense sticks, insecticides, repellents and fuels.
Particularly preferred perfumed products according to the invention are selected from the following list:
Particularly preferred perfumed products according to the invention are detergents and cleaning agents, hygiene or care products, especially in the field of body and hair care, cosmetics and household.
Furthermore, preferred perfumed products according to the invention are those wherein the proportion of the fragrance substance mixture according to the invention in the perfumed product is 0.01 to 10% by weight, preferably 0.1 to 5% by weight, particularly preferably 0.25 to 3% by weight, based on the total mass of the perfumed product, respectively.
Moreover, the invention relates to a method for producing a perfumed product, preferably a perfumed product according to the invention (as described herein), comprising or consisting of the following steps:
Finally, the invention also relates the use of the compound of formula (I)
for enhancing the natural freshness and/or radiance and/or for masking or reducing sulphurous, artificial and/or metallic notes of one or more fragrance substances different from the compound of formula (I), preferably of fragrance substances with a fruity olfactory note.
Preferred is a use of the compound of formula (I) according to the invention, wherein the, one, several or all of the fragrance substance(s) different from the compound of formula (I) is/are selected from the components (b) and/or (c) of a fragrance substance mixture according to the invention.
What has been said above in connection with fragrance substance mixtures according to the invention applies accordingly to the (preferred) embodiments of the methods, perfumed products and uses according to the invention as described herein.
Furthermore, what is said within the scope of an embodiment of the present invention described herein naturally also applies to other embodiments described herein. Accordingly, the embodiments described herein may be combined with each other in any way—as far as it makes sense for the skilled person.
The following examples explain the invention. Unless otherwise stated, proportions and percentages refer to the weight.
Dipropylene glycol (DPG), Diethyl phthalate (DEP), triethyl citrate (TEC), isopropyl myristate (IPM); nat.=natal;
For explanations of the product names of fragrance substances see e.g. S. Arctander, Perfume and Flavor Materials, Vol. I and II, Montclair, N.J., 1969, self-published or H. Surburg, J. Panten, “Common Fragrance and Flavor Materials”, 5th ed., Wiley-VCH, Weinheim 2006.
With the addition of 2% of a 10% solution of 8,8-dimethyl-6,10-dioxaspiro[4.5]decane (compound of formula (I)), the mixture appears stronger, more floral and more green-fruity.
With the addition of 3% 8,8-dimethyl-6,10-dioxaspiro[4.5]decane (compound of formula (I)) the mixture becomes fresher, the fruity notes are enhanced and the compound of formula (I) provides a harmonious, natural note.
With the addition of 5% 8,8-dimethyl-6,10-dioxaspiro[4.5]decane (compound of formula (I)), the mixture becomes more natural, less sulphurous, more fruity, rounder, fresher and tangier.
With the addition of 10% 8,8-dimethyl-6,10-dioxaspiro[4.5]decane (compound of formula (I)), the mixture becomes less sulphurous, more fruity, round, floral and natural.
1%
1%
1%
1%
In a 1000 ml three-necked flask with stirrer, contact thermometer, heating mantle, and water separator, 126 g (1.5 mol) cyclopentanone, 156 g (1.5 mol) 2,2-dimethyl-1,3-propanediol, 1.5 g p-toluenesulfonic acid in 305 g cyclohexane are provided and boiled 2-3 at the water separator. After cooling to RT, wash 2× with soda solution and concentrate. The residue is distilled over a 10 cm M.F.K. (boiling range: 72-73° C./10 mbar).
Yield: 219 g (corresponds to 85.9% of theory)
MS: m/z (%)=170 (7), 141(100), 85(34), 69(68), 67(13), 56(43), 55(67), 41(33).
1H-NMR (400 MHz, DMSO-d6) δ 3.39 (s, 4H), 1.82-1.73 (m, 4H), 1.62-1.50 (m, 4H), 0.89 (s, 6H).
The perfume oils P1, P2, P3 or P4 from the above perfume oil examples 1 to 4 were each separately incorporated into the following formulations.
The olfactory effects described above under the respective perfume oil were also observed in the following formulations, respectively.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2017/082840 | 12/14/2017 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2019/114969 | 6/20/2019 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 5711952 | Boden et al. | Jan 1998 | A |
| 20120308486 | Singer | Dec 2012 | A1 |
| Number | Date | Country |
|---|---|---|
| H11502555 | Mar 1999 | JP |
| 9630469 | Oct 1996 | WO |
| Entry |
|---|
| International Search Report and Written Opinion dated Feb. 5, 2018 for corresponding PCT Application No. PCT/EP2017/082840. |
| Kurt Kulka, “Novel Acetals and Ketals Having the Gem Dimethyl Group,” Perfumery and Essential Oil Record, vol. 57, No. 7, 1966, pp. 427-433 XP9503123. |
| Sell, C.S., “On the Unpredictability of Odor”, Angewandte Chemie International Edition, vol. 45, No. 38, 2006, pp. 6254-6261 XP007911257. |
| Number | Date | Country | |
|---|---|---|---|
| 20210087500 A1 | Mar 2021 | US |
