• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Insect repellent product. The insect repellent product because it comprises a mixture of a plurality of essential oils, and at least one secondary compound. Said essential oils are chosen among essential oils of eucalyptus, citronella, bleach, rosemary, lemon and undelactone, or a mixture thereof, and said at least one secondary compound are chosen from citral, linalool, citronellal, geraniol, and geranyl acetate . Provides a natural, biodegradable and durable insect repellent. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2674263A1
    申请号:ES201631696
    申请日:2016-12-28
    公开日:2018-06-28
    发明作者:Montserrat Riera Giner；Joaquim Llorente Alonso；Alejandro MARTINEZ URIBE
    申请人:Zobele Espana SA；
    IPC主号:
    专利说明:

    Insect repellent product
    The present invention relates to an insect repellent product, which prevents stinging.of insects, which releases volatile substances into the environment continuously, releasingalso a pleasant smell that is used as an air freshener. Background of the invention
    10 Many insect repellent products known as natural are now known that are formed from essential oils. These formulations are based on products with insect repellent capabilities that replace traditional chemicals.
    15 These repellents are usually marketed as lotions, creams or sprays, which are applied to the user's skin and / or clothing. Aerosols and lotions are absorbed through the skin, directly exposing the user to the same chemical substances intended to protect them from insects, possibly resulting in allergic or physical reactions of
    20 other type, skin irritation, damage to tissues and other materials, and leave an unpleasant greasy layer.
    In addition, most of the essential oils used in these products are very volatile, and this contributes to their poor longevity as insect repellents. They can last on the
    25 skin for a relatively short period of time (for example, up to 4 hours), so a new application of the product is necessary to have continuous protection over time.
    Another way to release insect repellent products is patches and wristbands. The
    30 patches and wristbands with these repellents also come into direct contact with the user's skin and are limited to where they can be used. In addition, wristbands and adhesive patches have a limited amount of product, and additional product application is not possible.
    35 The use of candles such as citronella and geraniol to repel insects is also known in the art. However, it has been shown that citronella and geraniol are not

    Very effective insect repellents, even when released in the air of a candle.
    Consequently, there is currently an absence in the market of a natural, biodegradable and durable insect repellent. 5 Description of the invention
    With the insect repellent product of the invention, the aforementioned drawbacks are resolved, presenting other advantages that will be described below.
    The insect repellent product according to the present invention is characterized in that it comprises a mixture of a plurality of essential oils, and preferably also comprises at least one secondary compound.
    Advantageously, said essential oils are chosen from essential oils of eucalyptus, citronella, lavandina, rosemary, lemon and undelactone, and said at least one secondary compound is chosen from citral, linalool, citronelal, geraniol, and geranyl acetate.
    In addition, the insect repellent product according to the present invention also
    20 may comprise at least one solvent, at least one ultraviolet light absorber, stabilizers and / or antioxidants.
    If desired, the insect repellent product may be dissolved in a liquid carrier, for example, dipropylene glycol methyl ether, or it may be impregnated in a porous support.
    The insect repellent product according to the present invention has the main advantage that it can be released to the environment in a continuous manner and, at the same time, releases a pleasant and unique smell that refreshes the environment.
    30 In addition, it is suitable for delivery through plug-in liquid diffusers, diffusers for pads, coils and other types of diffusers (for example, static wick diffusers).
    To reinforce the insect bite prevention action, you can add
    35 some identical natural components, cited as additional components. The so-called identical natural components are compounds that can be found in the

    essential oils mentioned above. An example of such components are: citral, linalool, α-pinene, β-pinene, citronelal, geraniol, geranyl acetate, among others. Description of preferred embodiments
    5The present invention relates to an insect repellent product with a compositionwhich can be released continuously in the environment and, at the same time, refreshes theAmbience with a pleasant smell.
    10 In nature, plants commonly produce volatile compounds, essential oils, when the leaves are damaged in order to deter herbivores. When these volatile substances bind to odorizing receptor proteins that are exposed to the outside environment, for example, in insect antennas, they block the insect's ability to locate the host.
    15 Each volatile essential oil compound produces a different response, and a suitable combination of volatile compounds reduces or even blocks insects, preventing them from biting.
    The formulation of the insect repellent product according to the present invention includes a main composition comprising at least one of essential oils of eucalyptus, citronella, lavandina, rosemary, lemon and undelactone to provide a preventive effect of preventing insects from biting.
    In addition, in said formulation at least one of a series of secondary components (for example, citral, linalool, citronelal, geraniol, geranyl acetate) are added which provide an additional beneficial feature.
    Eucalyptus oil that can be used in the composition is a volatile oil extracted from
    30 fresh leaves of a specific eucalyptus species (for example, Eucalyptus citriodora and Eucalyptus globulus). Its main components are limonene, 1.8 cineole and citral.
    The source of citronella essential oil is mainly Cymbopogon nardus. Citronella mainly comprises citronelal, citronellol, geraniol, citral, α-pinene and
    35 limonene.

    To obtain essential oils of lavandina, the most commonly used species are Lavandula x intermedia, a class of hybrids of L. angustifolia and L. latifolia. 1,8-cineole, borneol and camphor are the main compositions of the essential oil of lavandina.
    5 Rosemary extract is produced from Rosmarinus officinalis or Rosmarinuscoronarium of the Labiatae family. The main components are 1,8-cineole and α-pinene.
    Lemon oil is obtained by cold expression of the lemon citrus peel. The main chemical components of lemon oil are α-pinene, canphene, 10β-pinene, sabinene, myrcene, α-terpinen, linalool, β-bisabolene, limonene, trans-abergamoten, nerol and neral.
    To reinforce the bite prevention action, some components may be added to the formula. These components are mainly citral and linalool. Alternatively, α-pinene, β-pinene, citronelal, geraniol and geranyl acetate can also be added.
    As an example, citronella essential oil can be used in concentrations, by weight, from 3 to 15%, and more preferably in concentrations by weight from 5 to 10%; Eucalyptus essential oils can be used in concentrations, by weight, of 0.5 to
    20 8% and more preferably in concentrations by weight of 1 to 5%; Lavandina essential oil can be used, in concentrations by weight, from 0.5 to 8%, and more preferably in concentrations by weight from 0.5 to 3%; Rosemary essential oil can be used, in concentrations, by weight, of 0.1 to 5%, and more preferably in concentrations of 0.2 to 2%.
    Preferably, the total concentration of essential oils in the formulation of the insect repellent product may vary from 10 to 20% by weight.
    The formulation may also include undelactone. This chemical can be found in tomato leaf extract. Undelactone is added in a weight concentration of 0.1 to 5%, and more preferably in concentrations of 0.5 to 3%.
    The secondary components that can be added in the formula to reinforce the prevention action are bites are citral, linalool, citronelal, geraniol and geranyl acetate. These 35 secondary components can be added in a range of 0 to 20%.

    For the use of the insect repellent product also as an air freshener, it may comprise one or more solvents. The standard solvents of choice for use in the insect repellent product of the present invention are ether glycols, such as dipropylene glycol dimethyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether to control evaporation rate. Other solvents such as isopropyl palmitate or isopropyl myristate, or any other suitable solvent, can also be used.
    UV absorbers or stabilizers can also be added to preserve the oils against the potential harmful effects of sunlight. Some useful UV absorbers or stabilizers are benzophenones, salicylate esters and the like.
    The insect repellent product according to the present invention may also include a liquid carrier, such as dipropylene glycol methyl ether in an amount of 5 to 50% by weight, preferably 10 to 25% by weight to create a repellent product of insects that must be spread with a diffuse wick.
    Non-limiting examples of the insect repellent product according to the present invention are described below.
    It should be noted that as "active formula" it is intended to designate the mixture of the main composition (essential oils) and the secondary components (citral, linalool, citronelal, geraniol and / or geranyl acetate), as indicated in each example. In addition, percentages are by weight, unless otherwise indicated.
    Example 1:-17% active formula-butylhydroxytoluene (BHT) 1%-dipropylene glycol methyl ether 82%
    Composition of active formula:
    Substance CAS% P / p
    Citronella oil 91771-61-88.0
    Eucalyptus oil 84626-32-13.0
    Lavandina oil 91722-69-91.0

    Rosemary oil 84604-14-8 / O0.8
    Lemon oil 8008-56-80.1
    Citral 55392-40-523.00
    Linalool 78-70-637,613
    A bottle with a content of 30 ml of said formula is used. A cylindrical wooden base wick is used to transport the volatile substance from the bottle close to an electric heater. The bottle is used inside an electric diffuser that plugs in
    5 to the electricity grid, which promotes the evaporation of volatile substances.
    Efficacy Test:
    The product was activated in a 20 m3 test chamber. The product was left for a
    10 a certain period of time (1 hour and 2 hours) to allow the product to create an active atmosphere. Next, mosquitoes were released in the same chamber (50 female mosquitoes, age approximately 7 days old, released 5 minutes before the start of the relevant assessment). A human volunteer with bare forearms and legs entered the chamber and closed the entrance door. The volunteer entered the
    15 camera for a maximum of 15 minutes, each after 1 hour after activating the product and 2 hours after activating the product. The number of mosquito bites was counted. If the volunteer received 5 bites before the maximum test time of 15 minutes ended, the volunteer stopped the test to avoid excessive bite. Subsequently, all mosquitoes were removed from the chamber. For each test you
    20 released a new batch of 50 female mosquitoes in the chamber. After each test, all mosquitoes were removed from the chambers. The mosquitoes used had not bite before the test, which means they were motivated to bite and collect blood from a host organism.
    25 Untreated comparison controls were used before starting the test to verify that mosquitoes bite normally. Here the identical test was performed, but without product. Time was measured until 5 bites occurred. The minimum allowed bite of mosquitoes on the arms / legs was 5 mosquito bites in 10 minutes. This allowed verifying that the mosquitoes showed sufficient activity of
    30 bite If less bites had been achieved in 10 minutes, the test would not have been carried out.

    After 2 hours of preconditioning, the product according to the present invention had a preventive efficacy of 100% bite against mosquitoes for both volunteers during the 15-minute test (0 bites in 15 minutes).
    Untreated controls (5 bites in 10 minutes), which tested the activity of mosquito bites, showed 5 mosquito bites between 3 minutes and 43 seconds (volunteer 1) and 5 minutes and 42 seconds (volunteer 2).
    The product of the present invention can also be used in composition with an insecticide tablet, comprising a solvent and a porous support, which forms the tablet. The standard solvents of choice for use in the present invention are ether glycols, such as dipropylene glycol dimethyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether, or tripropylene glycol n-butyl ether to control the evaporation rate. Other solvents such as isopropyl palmitate or isopropyl myristate, or other suitable solvents can also be used.
    In addition, the porous support that forms the tablet may be a fibrillar substrate, for example cellulose, although any porous material that may contain a volatile substance, such as a synthetic polymer fiber substrate, open cell foam or any other substrate could be used material.
    Example 2 A 2.5 mm thick cellulose tablet impregnated with 520 mg of the following composition was used:
    - Active formula 50% -tripropylene glycol methyl ether 40% -tripropylene glycol n-butyl ether 10%
    Composition of active formula:
    Substance CAS% P / p
    Citronella oil 91771-61-88.0
    Eucalyptus oil 84626-32-13.0
    Lavandina oil 91722-69-91.0

    Rosemary oil 84604-14-8 / O0.8
    Lemon oil 8008-56-80.1
    Citral 55392-40-523.00
    Linalool 78-70-637,613
    This tablet impregnated with the formulation was placed on a conventional heated plate in an insecticide dispensing apparatus.
    5 Efficacy test:
    The test protocol is similar to that described for example 1: The product was activated in a 20 m3 test chamber. The product was left for a certain period of time (1 hour and 2 hours) to allow the product to create an active atmosphere. Next, 10 Culex quinquefasciatus mosquitoes were released in the same chamber in which the product is located (50 female mosquitoes, approximately 7 days old, released 5 minutes before the start of the relevant evaluation). A human volunteer with bare forearms and legs entered the chamber and closed the entrance door. The volunteer entered the chamber for a maximum of 15 minutes, after 1 hour 15 after activating the product and 2 hours after activating the product. The number of mosquito bites was counted. If the volunteer received 5 bites before the maximum test time of 15 minutes ended, the volunteer stopped the test to avoid excessive bites. Subsequently, all mosquitoes were removed from the chamber. For each test a new batch of 50 female mosquitoes was released in the chamber. After
    20 of each test, all mosquitoes were removed from the chambers. The mosquitoes used had not bite before the test, which means they were motivated to bite and collect blood from a host organism.
    Untreated comparison controls were used before starting the test to
    25 verify that mosquitoes bite normally. Here the identical test was performed, but without product. Time was measured until 5 bites occurred. The minimum allowed bite of mosquitoes on the arms / legs was 5 mosquito bites in 10 minutes. This allowed verifying that the mosquitoes showed enough activity to bite. If less bites had been achieved in 10 minutes, the test would not have led to
    30 out.
    Results with the product according to the invention:

    Volunteer 1: 3 bites in 10 minutesVolunteer 2: 2 bites in 10 minutesVolunteer 3: 1 bite in 10 minutes
    5 Control test results without any products:Volunteer 1: 5 bites in 1 minute 34 secondsVolunteer 2: 5 bites in 2 minutes 6 seconds
    Although the results were not as good as with Example 1, the formulation has anyway demonstrated a reduction in mosquito bite activity.
    Although reference has been made to a specific embodiment of the invention, it is apparent to one skilled in the art that the insect repellent product described is susceptible to numerous variations and modifications, and that all the details
    The aforementioned may be substituted by other technically equivalent ones, without departing from the scope of protection defined by the appended claims.
    权利要求:
    Claims (7)
    [1]
    1. Insect repellent product, comprising an essential oil, characterized in that it comprises a mixture of a plurality of essential oils, wherein said oils
    5 essentials are chosen among essential oils of eucalyptus, citronella, lavandina, rosemary, lemon and undelactone.
    [2]
    2. Insect repellent product according to claim 1, which also comprises the
    less than a secondary compound, wherein said at least one secondary compound is chosen from citral, linalool, citronelal, geraniol, and geranyl acetate.
    [3]
    3. Insect repellent product according to any of the preceding claims, which also comprises at least one solvent.
    4. Insect repellent product according to any of the preceding claims, which also comprises at least ultraviolet light absorber.
    [5]
    5. Insect repellent product according to any of the preceding claims, which
    It also includes stabilizers. twenty
    [6]
    6. Insect repellent product according to any of the preceding claims, which also comprises antioxidants.
    [7]
    7. Insect repellent product according to any of the preceding claims, which is dissolved in a liquid carrier.
    [8]
    8. Insect repellent product according to any of the preceding claims, which is impregnated in a porous support.
    9. Insect repellent product according to claim 7, wherein said liquid carrier is dipropylene glycol methyl ether.
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    引用文献:
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    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201631696A|ES2674263B1|2016-12-28|2016-12-28|Insect repellent product|ES201631696A| ES2674263B1|2016-12-28|2016-12-28|Insect repellent product|
    PCT/EP2017/083497| WO2018122034A1|2016-12-28|2017-12-19|Insect repellent product|
    CA3047821A| CA3047821A1|2016-12-28|2017-12-19|Insect repellent product|
    EP17821881.4A| EP3562303A1|2016-12-28|2017-12-19|Insect repellent product|
    US16/473,927| US20190343119A1|2016-12-28|2017-12-19|Insect repellent product|
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