WO2023111366A1 - Support pour parfum longue durée - Google Patents

Support pour parfum longue durée Download PDF

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Publication number
WO2023111366A1
WO2023111366A1 PCT/ES2021/070892 ES2021070892W WO2023111366A1 WO 2023111366 A1 WO2023111366 A1 WO 2023111366A1 ES 2021070892 W ES2021070892 W ES 2021070892W WO 2023111366 A1 WO2023111366 A1 WO 2023111366A1
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WO
WIPO (PCT)
Prior art keywords
fragrance
support
range
excipient
vinyl acetate
Prior art date
Application number
PCT/ES2021/070892
Other languages
English (en)
Spanish (es)
Inventor
Leonidas TORRECILLA GUMBAU
Marc SÁNCHEZ BOSCH
Alberto MAJOS CULLELL
Original Assignee
Akewuele, S.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Akewuele, S.L. filed Critical Akewuele, S.L.
Priority to PCT/ES2021/070892 priority Critical patent/WO2023111366A1/fr
Priority to ES202490041A priority patent/ES2977008A2/es
Publication of WO2023111366A1 publication Critical patent/WO2023111366A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853—Vinylacetate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/042—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating with the help of a macromolecular compound as a carrier or diluent
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/01—Deodorant compositions
    • A61L9/013—Deodorant compositions containing animal or plant extracts, or vegetable material

Definitions

  • fragrance diffusion can be enhanced, for example, by heating the fragrance, including the fragrance in a volatile carrier, by the use of membranes, or by a combination thereof.
  • the diffusion of fragrances and their overall intensity is governed by their equilibrium vapor pressure. Fragrances with a high equilibrium vapor pressure have high volatility and evaporate quickly.
  • the useful life of a fragrance device is limited by the amount of fragrance that can be dispensed from the device.
  • one of the difficulties in selecting a carrier that allows uniform fragrance distribution at a selected rate is that some carriers and fragrances evaporate too quickly or conversely too slowly and/or insufficiently to create the desired fragrance. , in a large room.
  • Controlled release of fragrances may traditionally require pre-packaging of encapsulated fragrances in the final product.
  • encapsulation can be functional, sometimes encapsulation can lead to unbalanced fragrance release profiles, due to chemical incompatibility of the fragrance with the encapsulating agents or maldistribution of the fragrance in the encapsulated particles or substances.
  • encapsulation is expensive and therefore increases the cost of the underlying product.
  • US4515909 is one of the first documents to describe a fragrance article comprising polymeric substrates.
  • Said article comprises an ethylene-vinyl acetate (EVA) copolymer impregnated with a diffusing agent and a fragrance, wherein said copolymer contains between 15% to 30% of the vinyl acetate monomer, by weight, and about 85% to 70% ethylene monomer, by weight.
  • EVA ethylene-vinyl acetate
  • the spreading agent that can be used in said article is selected from the group consisting of benzyl benzoate, benzyl salicylate and mixtures thereof, said spreading agent being absorbed in the EVA copolymer in an amount by weight of approximately 1% up to the 10%.
  • the patent, US4515909 also describes a method for preparing this fragrance article that first comprises mixing the EVA copolymer and the diffusing agent for a time interval between 1 to 5 hours at a temperature range between 50-76 °C, until that said diffusing agent is completely absorbed by the copolymer. Subsequently, the generated impregnated copolymer can be obtained in the form of a pellet and this is placed in contact with the fragrance at room temperature until the fragrance is absorbed by the previously impregnated copolymer (pellet).
  • the impregnated pellets can also be molded in various shapes, such as EVA sheets with dimensions 1 cm x 1.5 cm x 0.3 cm, to be subsequently impregnated with a specific fragrance until each sheet has absorbed 30%. by weight of said fragrance, for a period of at least two hours.
  • EP 1479757B1 describes a method for imparting to fabrics that are washed in a washing machine for one or more wash cycles and/or to fabrics that are dried in a tumble dryer for one or more drying cycles. , a fragrance with long-lasting unsightly properties.
  • EP1479757B1 describes a method for imparting said fragrance using a hollow bag/envelope/package inside that comprises multiple solid or viscoelastic particles with a total weight of 2 g to 50 g, each particle having an average effective diameter. from 0.5mm-10mm.
  • Said unblown polymeric particles for fragrances consist of a solid/viscous porous particle comprising, by weight, EVA (30%) with a ratio of ethylene:vinyl acetate units of 60:40, PE low density (50%) and a fragrance (20%).
  • strips or transparent tapes with a thickness between 1-200 thousandths of an inch (0.025-5 mm), which comprise a substrate that contains at least one copolymer of a define, at least one derivative of a define and a fragrance, wherein said substrate is substantially free of homopolymeric material, said homopolymeric material being, for example, polystyrene, polyethylene, polypropylene or other homopolymers known in the state of the art.
  • the copolymer is selected from the group consisting of ethylene-vinyl acetate, propylene-vinyl acetate, and a mixture thereof, and the define derivative is selected from saturated carboxylic acid vinyl esters, saturated carboxylic acid propenyl esters , olefinically unsaturated organic acids and esters, and mixtures thereof.
  • the method of preparing these substrates in the form of strips or tapes that is carried out by means of the homogeneous mixture of the copolymer, the perfume, a suitable solvent (such as toluene), and optionally an adjuvant.
  • the obtained mixture is then deposited by casting or coating on a silicone release liner, followed by drying at an elevated temperature to remove the solvent. After drying, the strip or tape can be retained in the release liner, or removed from the release liner for use in the applications described herein.
  • WO 2008/153680 A has the disadvantage that it requires the use of organic solvents to be able to apply the perfume to the substrate, followed by the application of high temperatures for their evaporation.
  • This fragrance dispensing device comprises an electrical resistance, plug or other power source and fragrance in a thermoplastic polymer or carrier.
  • the thermoplastic polymer or carrier also has metal inclusions, such as powdered metal.
  • the thermoplastic carrier is selected from the group consisting of ethylene vinyl acetate (EVA), ethyl vinyl alcohol, high density polyethylene, low density polyethylene, polystyrene, acrylic polymers, polycarbonates, polyurethanes, nylons, blends and copolymers of the foregoing.
  • fragrance articles that are easy to hold or handle by hand, that can provide controlled and sustained release over time, as well as sufficient to create the desired fragrance in a large room or enclosed space, in containers or containers, would be desirable.
  • the first aspect of the invention is related to a fragrance support comprising at least:
  • an excipient where the excipient is selected from the list consisting of benzyl benzoate and isopropyl myristate; where the fragrance is impregnated in the polymeric matrix and where the excipient is present in the fragrance support in a weight range from 1-35%, preferably between 2-30%.
  • the good compatibility of the excipients with the polymeric matrix helps to retain and/or absorb the fragrance in the polymeric matrix, which facilitates a prolonged release of the fragrance over time. Likewise, it facilitates the release of the fragrance both during transport and during its use in open rooms and releases fragrances of a different nature in a sustained manner, such as citrus, floral, wild or marine fragrances.
  • the support of the first aspect of the invention does not comprise an electrical resistance, a plug or another power source.
  • the term "fragrance carrier” comprises a compact solid that has no voids or spaces.
  • the fragrance support does not comprise any envelope or bag having an interior compartment.
  • the fragrance support is a compact solid that can be spherical, tablet or rectangular in shape.
  • the fragrance support is a compact solid in the shape of a sphere, the 3 dimensions that define it will have the same width or diameter (1) with a range between 1.5 and 15 cm or is a compact tablet-shaped or rectangular-shaped solid, where said support can have a width or diameter (1) within a range between 1.5 and 15 cm and/or a height (2) within a range between 0.5 up to 3 cm and/or a depth (3) in a range between 2-15 cm.
  • the width or diameter (1) is measured taking the ends furthest from the center of the tablet as a reference point, as indicated in figures 1-3. Said dimensions facilitate its handling and that it can be used both in large spaces and in small-sized containers or packaging.
  • the dimensions of the previous embodiment make it possible to obtain a light support that is easy to transport and to incorporate into different types of packaging, such as envelopes, boxes, bags, cardboard tubes, or any package or container that may be included in its inside the support of the first aspect.
  • the packaging, containers or containers can be selected from the list consisting of cardboard, plastic, crystal, glass or metal.
  • polymeric matrix or substrate includes a primary phase that comprises a material composed of at least two polymers in which a secondary phase is embedded that can comprise fragrances, excipients, solid particles, liquids, or gels.
  • a secondary phase is embedded that can comprise fragrances, excipients, solid particles, liquids, or gels.
  • the polymeric components of the primary phase must not completely dissolve or fuse with each other, they must be physically identifiable as they form a heterogeneous mixture.
  • the terms polymer matrix or substrate can be used interchangeably.
  • Fragrance holder has the advantages that it can release a wide range of fragrances over a long period of time in a sustained manner.
  • the support for fragrance of the first aspect can sustainably retain and release fragrances of different natures such as citrus, floral, wild or marine fragrances, while it can comprise a concentration by weight of each of them, to ensure long duration. both during transport and during use in open rooms.
  • Fragrance support also has the advantage that it can release fragrance in a controlled manner at a rate that is adequate for human sensory satisfaction and/or malodour masking.
  • the second aspect of the invention is related to a process for obtaining the fragrance support according to the first aspect of the invention, which comprises at least the following stages: a) the ethylene-vinyl acetate copolymer is impregnated with a mixture that it comprises a fragrance and an excipient, at a temperature in a range from 10 to 90 °C; b) the product obtained in the previous stage is mixed with polyethylene until a homogeneous mixture is obtained in a temperature range from 40 to 80 °C; c) the mixture obtained in the previous stage is injected inside an injection mould; d) is removed from the fragrance support of the finished mould, after completion of step c) of the injection mould.
  • the process of the second aspect allows the ethylene-vinyl acetate (EVA) copolymer to be impregnated with the fragrance and the excipient in a single stage, reducing process times while allowing the correct impregnation and absorption of both in the EVA and the matrix of the support so that the fragrances are retained and are subsequently released in a sustained manner over time for a long period of time.
  • EVA ethylene-vinyl acetate
  • the third aspect of the invention is related to the support obtainable through the process of the second aspect.
  • the fourth aspect of the invention is related to the use of the support for fragrance of the first aspect and of the fragrance obtainable through the process of the second aspect, in the aromatization of commercial premises, clothing, textile, furniture or merchandise stores, as well as to flavor containers, containers or packaging adapted to be closed suitable for clothing, textiles, pieces, decorative objects or furniture.
  • Figure 1 3-dimensional representation of a particular embodiment of the support for fragrances with a spherical shape.
  • Figure 2 Representation in 3 dimensions of a particular embodiment of the tablet-shaped support for fragrances.
  • Figure 3 Representation in 3 dimensions of a particular embodiment of the support for fragrances with a rectangular shape.
  • the first aspect of the invention is related to a fragrance support comprising at least: (i) a polymer matrix containing;
  • an excipient where the excipient is selected from the list consisting of benzyl benzoate and isopropyl myristate; where the fragrance is impregnated in the polymer matrix and where the excipient is present in the fragrance support in a weight range from 1-35%, preferably between 2-30%
  • the polymeric matrix does not contain metals in the form of aluminum powder.
  • the fragrance is impregnated and/or retained in the polymeric matrix, preferably the fragrance is impregnated and/or retained in the EVA comprised in the polymeric matrix.
  • the excipient is selected from the list consisting of benzyl benzoate, isopropyl myristate and mixtures thereof, where the mixtures thereof comprise benzyl benzoate and isopropyl myristate in a Weight ratio from 80/20 to 20/80.
  • fragrance and the excipient are retained in the polymeric matrix.
  • the fragrance carrier further comprises one or more additives.
  • the additives can be selected from plasticizers, diluents and/or colorants.
  • the additive is a dye selected from the list consisting of, Yellow Oxide (Cl 77492), Red Oxide (Cl 77491), Green Oxide (Cl 77288), Ultramarine Blue (Cl 77007), Ultramarine Pink (Cl 77007), Ultramarine Violet (Cl 77007), Titanium Dioxide (Cl 77891), Zinc Oxide (Cl 77949), Black Oxide (Cl 77499), Charcoal (Cl 77268), Tartrazine Yellow (Cl 19140), Egg Yellow ( Cl.
  • Plasticizers can also be added to polymeric materials that are used in embodiments of the invention.
  • Plasticizers can be selected from a list consisting of; Bis(n-butyl)phthalate, polyethylene glycol with molecular weight (Mn) ranging from 200-6000, Triethylcitrate (TEC), Acetyltriethylcitrate (ATEC), Tributylcitrate (TBC), Acetyltributylcitrate (ATBC), Trioctylcitrate (TOC), Acetyltrioctylcitrate ( ATOC),
  • Trihexylcitrate THC
  • Acetyltrihexylcitrate HAC
  • Butyryltrihexylcitrate BTHC, trihexyl o-butyrylcitrate
  • Trimethylcitrate TMC
  • tricetic acid ester of glycerin and citric acid THC
  • the polymeric matrix is present in the fragrance carrier in a percentage by weight from 45-92%, more preferably in a percentage by weight from 50-90%.
  • polyethylene polymer includes polyethylene homopolymers and polyethylene copolymers having a density from 945-980 kg/m 3 , preferably from 950-975 kg/m 3 and/or a point of melting point measured by DSC between 120-150 °C, preferably melting point measured by DSC (differential scanning calorimetry) is between 125-140 °C.
  • the DSC measurement was carried out with a heating rate of 10 degrees per minute.
  • the polyethylene copolymers can be copolymers of polyethylene and polypropylene.
  • the polyethylene polymer used in the invention can have a hardness, measured with a durometer according to the ISO 868 method on the D scale, in a range between 75-90, preferably between 63-72.
  • the polyethylene polymer is a polyethylene homopolymer. In another more preferred embodiment the polyethylene polymer consists of a polyethylene homopolymer. In another even more preferred embodiment, the polyethylene polymer is a high density polyethylene homopolymer.
  • polyethylene is present in the fragrance carrier in a percentage by weight from 3-25%, more preferably in a percentage by weight from 5-20%.
  • the fragrance carrier of the first aspect has good fragrance retention and release despite its high polyethylene content.
  • EVA Ethylene vinyl acetate copolymers
  • EVA ethylene vinyl acetate copolymer and (EVA) comprises between 20-40% by weight of vinyl acetate and/or between 80-60% by weight of ethylene.
  • EVA used in the invention can have a hardness measured with a durometer according to the ASTM D 2240 method, on the A scale, in a range between 75-90, preferably between 78-85.
  • the supports that comprise a copolymer of ethylene and vinyl acetate comprise vinyl acetate in a range between 20-40% by weight and/or ethylene in a range between 80-60% by weight. of provide better fragrance release over a long period of time without the need to use an electrical resistance, a plug or another power source.
  • the EVA copolymer has a melting point, measured by DSC, in a range between 55-85 °C, preferably between 60-80 °C. Melting point measurement by DSC was carried out at a temperature rise rate of 10 C/min.
  • the EVA copolymer has a density measured by the ASTM D 1505 method, in a range between 0.92-0.98 g/cm 3 .
  • the EVA is present on the fragrance carrier in a percentage by weight from 25-80%, more preferably in a percentage by weight from 30-75%.
  • fragrance comprises, fragrances or fragrance compositions, fragrances based on water or natural oils, which may be volatile and may be transmitted to the olfactory system.
  • fragrance and perfume can mean one or more different fragrance molecules as mixtures or blends of fragrance molecules.
  • fragrance can include one or more aromatic properties, such as fragrance materials such as top fragrance, mid fragrance, or base fragrance; these fragrances or their compositions are often used, such as including but not limited to essential oils, aromatic essential oils, various scents, fragrance family floral, citrus fragrance family, marine fragrance family and/or wild and floral fragrance family.
  • suitable fragrances include, but are not limited to Smoky, Aldehyde, Aliaceous, Musky, Woody, Animal, Anise, Powdery, Balsamic/Menthol, Cocoa, Coffee, Coniferous, Leather, Sweet, Spicy, Fruity, Gourmande, Mushroom/Earthy, Dairy, Marine/Ozonic, Oriental, Earthy, Toasty, Green, Vinous
  • fragrance is preferably in liquid or oil form.
  • the floral family of fragrances is one of the most popular and extensive of all perfume families. This family includes all the perfumes whose main theme is the olfactory representation of a single flower (soliflore) or a set of vandalized flowers (bouquet). Enriching them with accessory notes, they give rise to subgroups such as green floral, aquatic, fruity, white flower, floral-aldehyde, spicy and floriental fragrances. The most classic and iconic floral notes are three: rose, jasmine and neroli.
  • the family of citrus fragrances also known as Hes Southernde, is characterized by being eminently composed of top notes from citrus fruit peels such as bergamot, lemon, orange, tangerine or grapefruit. They are usually soft and fresh fragrances, with an acid touch. Probably the most iconic fragrances that can be included in this family are the traditional cologne waters, made up of fresh and volatile notes, the common notes in this type of perfume are; lemon, orange, lime, grapefruit, bergamot, tangerine, yuzu, petitgrain, neroli, orange blossom.
  • the fragrance is present in the fragrance carrier in a range between 3-25% by weight.
  • the second aspect of the invention is related to a process for obtaining the fragrance support according to the first aspect of the invention, which comprises at least the following stages: a) the ethylene-vinyl acetate copolymer is impregnated with a mixture that it comprises a fragrance and an excipient, at a temperature in a range from 10 to 90 °C; preferably in a range from 20-80 °C; b) the mixture obtained in the previous stage is maintained in a temperature range between 10 to 90 °C; preferably in a range from 20-80 °C, for a period of time between 2-7 hours; c) the product obtained in the previous stage is mixed with polyethylene until a homogeneous mixture is obtained in a temperature range from 10 to 90 °C; preferably in a range from 20-80 °C; d) the mixture obtained in the previous stage is injected inside an injection mold at a temperature in a range between 110-140 °C; and e) is removed from the finished mold fragrance support, after completion of
  • the ethylene vinyl acetate (EVA) copolymer of step a) of the second aspect of the invention corresponds to and is the same as the EVA copolymer of the first aspect of the invention.
  • the polyethylene of step b) of the second aspect of the invention corresponds to and is the same as the polyethylene of the first aspect of the invention.
  • the excipient and fragrance are mixed in an excipient/fragrance weight ratio in a range from 2.5-0.1, preferably in a range from 2-0.3, plus preferably in a range from 2-0.5.
  • the impregnation step b) is carried out by spraying, pulverizing or spraying techniques.
  • the mixing process of stage b) is carried out in a time range from 15 to 180 min, depending on the fragrance and the composition to be prepared. Preferably, between 15 min and 120 min.
  • the ethylene vinyl acetate copolymer and the polyethylene polymer used are preferably in the form of a squawk.
  • the mold has the dimensions of the fragrance holder.
  • said process comprises at least the following stages: a) the ethylene-vinyl acetate copolymer is impregnated with a mixture comprising a fragrance and an excipient, a a temperature in a range from 10 to 90 °C; preferably in a range from 20-80 °C, where the excipient is selected from the list consisting of benzyl benzoate and isopropyl myristate; and where optionally weight ratio of ethylene vinyl acetate copolymer to excipient is from 20:1 to 1:1; b) the product obtained in the previous stage is mixed with a polyethylene polymer until a homogeneous mixture is obtained in a temperature range from 10 to 90 °C; preferably in a range from 20-80 °C; c) the product obtained in the previous stage is mixed with polyethylene until a homogeneous mixture is obtained in a temperature range from 10 to 90 °C; preferably in a range
  • said process comprises at least the following stages: a) the ethylene-vinyl acetate copolymer is impregnated with a mixture comprising a fragrance and an excipient, a a temperature in a range from 10 to 90 °C; preferably in a range from 20-80 °C, where the excipient is selected from the list consisting of benzyl benzoate and isopropyl myristate; where the weight ratio of ethylene vinyl acetate copolymer to excipient is from 20:1 to 1:1 and where the mixture of fragrance and excipient comprises a weight concentration of the excipient in the mixture from 35% to 65% ; b) the product obtained in the previous stage is mixed with a polyethylene polymer until a homogeneous mixture is obtained in a temperature range from 10 to 90 °C; preferably in a range from 20-80 °C; c) the product obtained in the previous stage is mixed with polyethylene until
  • said process comprises at least the following stages: a) the ethylene-vinyl acetate copolymer is impregnated with a mixture comprising a fragrance and an excipient, a a temperature in a range from 10 to 90 °C; preferably in a range from 20-80 °C; where the excipient is selected from the list consisting of benzyl benzoate and isopropyl myristate; where the weight ratio of the ethylene vinyl acetate copolymer to the mixture, fragrance and excipient, is from 8:1 to 0:4; and optionally where the mixture of fragrance and excipient comprises a weight concentration of the excipient in the mixture from 35% to 65%, b) the product obtained in the previous stage is mixed with a polyethylene polymer until a homogeneous mixture in a temperature range from 10 to 90 °C; preferably from 20-80 °C; c) the product obtained in the previous stage
  • the weight ratio of the ethylene and vinyl acetate copolymer to the mixture, fragrance and excipient is from 8:1 to 0:4 and/or the fragrance and excipient mixture comprises a weight concentration of the excipient in the mixture from 35% to 65%.
  • the fragrance is mixed with the excipient in the appropriate proportions as described in the first aspect of the invention.
  • the EVA copolymer is impregnated with the newly obtained mixture of fragrance and excipient, for a time range from 15 min to 90 min in a mixer at a temperature in a range between 10-90 °C, preferably between 15-75°C.
  • the polyethylene polymer is added to the same mixer, where they are mixed for a period of time between 15-60 min at a temperature in a range between 10-60 °C, preferably between 15-40 °C.
  • the mixture obtained is injected into an injection mold that works at an injection temperature range between 110-140 °C.
  • the fragrance support obtained has the advantage that it retains both the fragrance and the excipient once the last stages d) and e) have been completed, providing a fragrance support that allows the prolonged release of the fragrance over time for at least 1 month, more preferably for 2 months, without the need to heat the support or connect said support to any electrical device.
  • the process of the second aspect allows the ethylene-vinyl acetate (EVA) copolymer to be impregnated with the fragrance and the excipient in a single stage, reducing process times while allowing the correct impregnation and absorption of both in the EVA and the matrix of the support so that they are retained and are released in a sustained manner over time for a long period of time. Preferably for at least 1 month, more preferably for at least 2 months, most preferably for at least 3 months.
  • the correct impregnation and absorption, as well as its sustained release, are carried out even after the injection and extraction stages of the mold c) and d) respectively.
  • Carrying out stage a) in which the impregnation of the EVA copolymer with the excipient and the fragrance is carried out in a single stage also facilitates the retention of the fragrance in the polymeric matrix during and after the injection process, obtaining shorter processes, reducing fragrance loss during injection, obtaining better retention and absorption of the fragrance and better release of the fragrance in the final fragrance support once the process is completed.
  • the process of the second aspect allows the preparation of these supports with polyethylene polymers, which showed incompatibility, as indicated in the state of the art, in the preparation of articles, supports or substrates for fragrances.
  • the third aspect of the invention is related to the support obtainable through the process of the second aspect.
  • the fourth aspect of the invention is related to the use of the support for fragrance of the first aspect in the aromatization of commercial premises, clothing stores, textiles, furniture or merchandise, as well as to aromatize containers, containers or packaging adapted to be closed suitable for clothing, textiles, pieces, decorative objects or furniture.
  • the support of the first aspect as well as the support obtained from the process of the second aspect, has the advantage that it does not leave residues on clothing, textiles, packaging or materials that are in its vicinity, therefore it does not cause deterioration to said items. materials or packaging.
  • the fourth aspect of the invention is related to the use of the support for fragrance of the first aspect or the support for fragrance obtained from the second aspect in the aromatization of commercial premises, clothing, textiles, furniture or merchandise stores, as well as to aromatize containers, containers or packaging adapted to be closed, being these suitable for clothing, textiles, pieces, decorative objects or furniture.
  • Example 1 support composition for fragrance comprising fragrance from the wild family.
  • 1 % by weight refers to the total fragrance support.
  • the wild fragrance is mixed with the excipient.
  • the EVA copolymer is impregnated with the newly obtained mixture of fragrance and excipient, for 25 min in a mixer at a temperature in a range between 21-48 °C.
  • the mixture is then kept at that temperature for 4 hours.
  • the polyethylene polymer is added to the same mixer and this is mixed for 30 min at a temperature in a range between 21-48 °C.
  • the mixture obtained is injected into an injection mold that works at a temperature range between 110-140 °C.
  • the EVA used has a ratio of % VA (vinyl acetate) between 25-30%.
  • Example 2 Support composition for fragrance comprising fragrance from the marine family.
  • the Marina fragrance is mixed with the excipient.
  • the EVA copolymer is impregnated with the newly obtained mixture of fragrance and excipient, for 25 min in a mixer at a temperature in a range between 21-55 °C, the mixture is maintained at that temperature for 4 hours.
  • the polyethylene polymer is added to the same mixer and this is mixed for 30 min at a temperature in a range between 21-55 °C.
  • the mixture obtained is injected into an injection mold that works at a temperature range between 110-140 °C.
  • the EVA used has a ratio of % VA (vinyl acetate) between 25-30%.
  • Example 3 Support composition for fragrance comprising fragrance from the citrus family.
  • 1 % by weight refers to the total fragrance support.
  • the citrus fragrance is mixed with the excipient.
  • the EVA copolymer is impregnated with the newly obtained mixture of fragrance and excipient, for 25 min in a mixer at a temperature in a range between 21-35 °C and a stirring speed in a range from 200- 1000 rpm. The mixture is then kept at that temperature for 5 hours.
  • the polyethylene polymer is added to the same mixer and this is mixed for 30 min at a temperature in a range between 21-35 °C.
  • the mixture obtained is injected into an injection mold that works at a temperature range between 110-140 °C.
  • the EVA used has a ratio of % VA (vinyl acetate) between 25-30%.
  • Example 4 support composition for fragrance comprising fragrance of the floral family.
  • 1 % by weight refers to the total fragrance support.
  • the floral fragrance is mixed with the excipient.
  • the EVA copolymer is impregnated with the newly obtained mixture of fragrance and excipient, for 25 min in a mixer at a temperature in a range between 21-70 °C. the mixture is then maintained at that temperature for 3.5 hours.
  • the Polyethylene polymer is added to the same mixer and this mixture is mixed for 30 min at a temperature in a range between 21-70 °C.
  • the mixture obtained is injected into an injection mold that works at a temperature range between 110-140 °C.
  • the EVA used has a ratio of % VA (vinyl acetate) between 25-30%.

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  • Fats And Perfumes (AREA)

Abstract

La présente invention se rapporte à un support pour parfum longue durée et le procédé d'obtention de ce dernier. Le support selon l'invention comprend au moins: i) une matrice polymère qui contient; - un copolymère d'éthylène et d'acétate de vinyle et - un polymère de polyéthylène; ii) un parfum; et iii) un excipient, lequel excipient est sélectionné dans la liste qui est constituée de benzoate de benzyle et de myristate d'isopropyle; lequel parfum est imprégné dans la matrice polymère et l'excipient est présent dans le support pour des parfums dans une plage en poids comprise entre 1 et 35%. Ledit support peut assurer une libération contrôlée et soutenue dans le temps, et peut créer le parfum désiré de manière suffisante dans une pièce de grande taille ou dans des lieux fermés, dans des contenants ou des récipients adaptés pour être fermés ou dans les différents types d'emballages pour le transport. La présente invention se rapporte également à l'utilisation dudit support pour parfumer des locaux commerciaux, des magasins de vêtements, de textiles, de meubles ou de marchandises, ainsi que pour parfumer des contenants, des récipients ou des emballages adaptés pour être fermés, étant donné qu'ils sont appropriés pour des vêtements, des textiles, des pièces, des objets de décoration ou des meubles.
PCT/ES2021/070892 2021-12-15 2021-12-15 Support pour parfum longue durée WO2023111366A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/ES2021/070892 WO2023111366A1 (fr) 2021-12-15 2021-12-15 Support pour parfum longue durée
ES202490041A ES2977008A2 (es) 2021-12-15 2021-12-15 Soporte para fragancia de uso duradero

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2021/070892 WO2023111366A1 (fr) 2021-12-15 2021-12-15 Support pour parfum longue durée

Publications (1)

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WO2023111366A1 true WO2023111366A1 (fr) 2023-06-22

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ES (1) ES2977008A2 (fr)
WO (1) WO2023111366A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4515909A (en) 1982-02-16 1985-05-07 Kiyohito Sawano Resinous composition for the prolonged release of fragrant substances
EP1479757B1 (fr) 2003-05-20 2008-01-02 INTERNATIONAL FLAVORS & FRAGRANCES INC. Methode conferant une fragrance substantive et optionnellement des proprietes anti-statiques aux textiles pendant la procedure de lavage et/ou de sechage
US20080292509A1 (en) * 2007-05-23 2008-11-27 D Amico Daniel Disposable Air Freshener Including Gel or Polymer Fragrance Support
WO2008153680A1 (fr) 2007-05-21 2008-12-18 S. C. Johnson & Son, Inc. Procedes de diffusion de parfum au moyen d'un 'ruban' d'acetate de vinyle-ethylene
US20100254829A1 (en) * 2009-04-01 2010-10-07 Harris Neal F Attachment to air moving device or system for the purpose of scenting spaces

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4515909A (en) 1982-02-16 1985-05-07 Kiyohito Sawano Resinous composition for the prolonged release of fragrant substances
EP1479757B1 (fr) 2003-05-20 2008-01-02 INTERNATIONAL FLAVORS & FRAGRANCES INC. Methode conferant une fragrance substantive et optionnellement des proprietes anti-statiques aux textiles pendant la procedure de lavage et/ou de sechage
WO2008153680A1 (fr) 2007-05-21 2008-12-18 S. C. Johnson & Son, Inc. Procedes de diffusion de parfum au moyen d'un 'ruban' d'acetate de vinyle-ethylene
US20080292509A1 (en) * 2007-05-23 2008-11-27 D Amico Daniel Disposable Air Freshener Including Gel or Polymer Fragrance Support
US8119072B2 (en) 2007-05-23 2012-02-21 Scent2Market Inc. Disposable air freshener including gel or polymer fragrance support
US20100254829A1 (en) * 2009-04-01 2010-10-07 Harris Neal F Attachment to air moving device or system for the purpose of scenting spaces

Also Published As

Publication number Publication date
ES2977008A2 (es) 2024-08-14

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