EP2211612A2 - Pflanzenpflaster mit geschäumter matrix - Google Patents
Pflanzenpflaster mit geschäumter matrixInfo
- Publication number
- EP2211612A2 EP2211612A2 EP08845229A EP08845229A EP2211612A2 EP 2211612 A2 EP2211612 A2 EP 2211612A2 EP 08845229 A EP08845229 A EP 08845229A EP 08845229 A EP08845229 A EP 08845229A EP 2211612 A2 EP2211612 A2 EP 2211612A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- active substance
- adhesive
- containing matrix
- matrix
- plaster
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 239000011159 matrix material Substances 0.000 title claims abstract description 65
- 239000011505 plaster Substances 0.000 title claims abstract description 17
- 239000013543 active substance Substances 0.000 claims abstract description 39
- 239000004831 Hot glue Substances 0.000 claims abstract description 27
- 230000009885 systemic effect Effects 0.000 claims abstract description 11
- 230000001070 adhesive effect Effects 0.000 claims description 34
- 239000000853 adhesive Substances 0.000 claims description 32
- 239000010410 layer Substances 0.000 claims description 29
- 239000004480 active ingredient Substances 0.000 claims description 26
- 229920000642 polymer Polymers 0.000 claims description 19
- 239000003814 drug Substances 0.000 claims description 16
- 229940079593 drug Drugs 0.000 claims description 16
- 238000005187 foaming Methods 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 10
- 239000000806 elastomer Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
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- 239000004793 Polystyrene Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 5
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 5
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
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- 239000000758 substrate Substances 0.000 claims 2
- 241000196324 Embryophyta Species 0.000 description 27
- 239000000203 mixture Substances 0.000 description 17
- 239000007789 gas Substances 0.000 description 13
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 7
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- WCXDHFDTOYPNIE-RIYZIHGNSA-N (E)-acetamiprid Chemical compound N#C/N=C(\C)N(C)CC1=CC=C(Cl)N=C1 WCXDHFDTOYPNIE-RIYZIHGNSA-N 0.000 description 2
- PGOOBECODWQEAB-UHFFFAOYSA-N (E)-clothianidin Chemical compound [O-][N+](=O)\N=C(/NC)NCC1=CN=C(Cl)S1 PGOOBECODWQEAB-UHFFFAOYSA-N 0.000 description 2
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- HOKKPVIRMVDYPB-UVTDQMKNSA-N (Z)-thiacloprid Chemical compound C1=NC(Cl)=CC=C1CN1C(=N/C#N)/SCC1 HOKKPVIRMVDYPB-UVTDQMKNSA-N 0.000 description 2
- LQDARGUHUSPFNL-UHFFFAOYSA-N 1-[2-(2,4-dichlorophenyl)-3-(1,1,2,2-tetrafluoroethoxy)propyl]1,2,4-triazole Chemical compound C=1C=C(Cl)C=C(Cl)C=1C(COC(F)(F)C(F)F)CN1C=NC=N1 LQDARGUHUSPFNL-UHFFFAOYSA-N 0.000 description 2
- PZBPKYOVPCNPJY-UHFFFAOYSA-N 1-[2-(allyloxy)-2-(2,4-dichlorophenyl)ethyl]imidazole Chemical compound ClC1=CC(Cl)=CC=C1C(OCC=C)CN1C=NC=C1 PZBPKYOVPCNPJY-UHFFFAOYSA-N 0.000 description 2
- MGNFYQILYYYUBS-UHFFFAOYSA-N 1-[3-(4-tert-butylphenyl)-2-methylpropyl]piperidine Chemical compound C=1C=C(C(C)(C)C)C=CC=1CC(C)CN1CCCCC1 MGNFYQILYYYUBS-UHFFFAOYSA-N 0.000 description 2
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- 239000005940 Thiacloprid Substances 0.000 description 2
- 239000005941 Thiamethoxam Substances 0.000 description 2
- 230000000895 acaricidal effect Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 2
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- BQYJATMQXGBDHF-UHFFFAOYSA-N difenoconazole Chemical compound O1C(C)COC1(C=1C(=CC(OC=2C=CC(Cl)=CC=2)=CC=1)Cl)CN1N=CN=C1 BQYJATMQXGBDHF-UHFFFAOYSA-N 0.000 description 2
- 229960002125 enilconazole Drugs 0.000 description 2
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- IJJVMEJXYNJXOJ-UHFFFAOYSA-N fluquinconazole Chemical compound C=1C=C(Cl)C=C(Cl)C=1N1C(=O)C2=CC(F)=CC=C2N=C1N1C=NC=N1 IJJVMEJXYNJXOJ-UHFFFAOYSA-N 0.000 description 2
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- 230000000855 fungicidal effect Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229940056881 imidacloprid Drugs 0.000 description 2
- YWTYJOPNNQFBPC-UHFFFAOYSA-N imidacloprid Chemical compound [O-][N+](=O)\N=C1/NCCN1CC1=CC=C(Cl)N=C1 YWTYJOPNNQFBPC-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- ONUFESLQCSAYKA-UHFFFAOYSA-N iprodione Chemical compound O=C1N(C(=O)NC(C)C)CC(=O)N1C1=CC(Cl)=CC(Cl)=C1 ONUFESLQCSAYKA-UHFFFAOYSA-N 0.000 description 2
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- 229910052751 metal Inorganic materials 0.000 description 2
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- XWPZUHJBOLQNMN-UHFFFAOYSA-N metconazole Chemical compound C1=NC=NN1CC1(O)C(C)(C)CCC1CC1=CC=C(Cl)C=C1 XWPZUHJBOLQNMN-UHFFFAOYSA-N 0.000 description 2
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- NHOWDZOIZKMVAI-UHFFFAOYSA-N (2-chlorophenyl)(4-chlorophenyl)pyrimidin-5-ylmethanol Chemical compound C=1N=CN=CC=1C(C=1C(=CC=CC=1)Cl)(O)C1=CC=C(Cl)C=C1 NHOWDZOIZKMVAI-UHFFFAOYSA-N 0.000 description 1
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- SBPBAQFWLVIOKP-UHFFFAOYSA-N chlorpyrifos Chemical compound CCOP(=S)(OCC)OC1=NC(Cl)=C(Cl)C=C1Cl SBPBAQFWLVIOKP-UHFFFAOYSA-N 0.000 description 1
- UXADOQPNKNTIHB-UHFFFAOYSA-N clofentezine Chemical compound ClC1=CC=CC=C1C1=NN=C(C=2C(=CC=CC=2)Cl)N=N1 UXADOQPNKNTIHB-UHFFFAOYSA-N 0.000 description 1
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- 239000003431 cross linking reagent Substances 0.000 description 1
- 229960001591 cyfluthrin Drugs 0.000 description 1
- QQODLKZGRKWIFG-QSFXBCCZSA-N cyfluthrin Chemical compound CC1(C)[C@@H](C=C(Cl)Cl)[C@H]1C(=O)O[C@@H](C#N)C1=CC=C(F)C(OC=2C=CC=CC=2)=C1 QQODLKZGRKWIFG-QSFXBCCZSA-N 0.000 description 1
- HAORKNGNJCEJBX-UHFFFAOYSA-N cyprodinil Chemical compound N=1C(C)=CC(C2CC2)=NC=1NC1=CC=CC=C1 HAORKNGNJCEJBX-UHFFFAOYSA-N 0.000 description 1
- 229960002483 decamethrin Drugs 0.000 description 1
- OWZREIFADZCYQD-NSHGMRRFSA-N deltamethrin Chemical compound CC1(C)[C@@H](C=C(Br)Br)[C@H]1C(=O)O[C@H](C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 OWZREIFADZCYQD-NSHGMRRFSA-N 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- IWEDIXLBFLAXBO-UHFFFAOYSA-N dicamba Chemical compound COC1=C(Cl)C=CC(Cl)=C1C(O)=O IWEDIXLBFLAXBO-UHFFFAOYSA-N 0.000 description 1
- OEBRKCOSUFCWJD-UHFFFAOYSA-N dichlorvos Chemical compound COP(=O)(OC)OC=C(Cl)Cl OEBRKCOSUFCWJD-UHFFFAOYSA-N 0.000 description 1
- 229950001327 dichlorvos Drugs 0.000 description 1
- QQQYTWIFVNKMRW-UHFFFAOYSA-N diflubenzuron Chemical compound FC1=CC=CC(F)=C1C(=O)NC(=O)NC1=CC=C(Cl)C=C1 QQQYTWIFVNKMRW-UHFFFAOYSA-N 0.000 description 1
- 229940019503 diflubenzuron Drugs 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
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- 238000009472 formulation Methods 0.000 description 1
- 229940097068 glyphosate Drugs 0.000 description 1
- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical compound OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- ZOTBXTZVPHCKPN-HTXNQAPBSA-N kresoxim-methyl Chemical compound CO\N=C(\C(=O)OC)C1=CC=CC=C1COC1=CC=CC=C1C ZOTBXTZVPHCKPN-HTXNQAPBSA-N 0.000 description 1
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- YFGYUFNIOHWBOB-UHFFFAOYSA-N pirimicarb Chemical compound CN(C)C(=O)OC1=NC(N(C)C)=NC(C)=C1C YFGYUFNIOHWBOB-UHFFFAOYSA-N 0.000 description 1
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- 229920006146 polyetheresteramide block copolymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1
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- 239000003755 preservative agent Substances 0.000 description 1
- WZZLDXDUQPOXNW-UHFFFAOYSA-N propamocarb Chemical compound CCCOC(=O)NCCCN(C)C WZZLDXDUQPOXNW-UHFFFAOYSA-N 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- QHMTXANCGGJZRX-WUXMJOGZSA-N pymetrozine Chemical compound C1C(C)=NNC(=O)N1\N=C\C1=CC=CN=C1 QHMTXANCGGJZRX-WUXMJOGZSA-N 0.000 description 1
- HZRSNVGNWUDEFX-UHFFFAOYSA-N pyraclostrobin Chemical compound COC(=O)N(OC)C1=CC=CC=C1COC1=NN(C=2C=CC(Cl)=CC=2)C=C1 HZRSNVGNWUDEFX-UHFFFAOYSA-N 0.000 description 1
- HYJYGLGUBUDSLJ-UHFFFAOYSA-N pyrethrin Natural products CCC(=O)OC1CC(=C)C2CC3OC3(C)C2C2OC(=O)C(=C)C12 HYJYGLGUBUDSLJ-UHFFFAOYSA-N 0.000 description 1
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- QYPNKSZPJQQLRK-UHFFFAOYSA-N tebufenozide Chemical compound C1=CC(CC)=CC=C1C(=O)NN(C(C)(C)C)C(=O)C1=CC(C)=CC(C)=C1 QYPNKSZPJQQLRK-UHFFFAOYSA-N 0.000 description 1
- FZXISNSWEXTPMF-UHFFFAOYSA-N terbutylazine Chemical compound CCNC1=NC(Cl)=NC(NC(C)(C)C)=N1 FZXISNSWEXTPMF-UHFFFAOYSA-N 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- LOQQVLXUKHKNIA-UHFFFAOYSA-N thifensulfuron Chemical compound COC1=NC(C)=NC(NC(=O)NS(=O)(=O)C2=C(SC=C2)C(O)=O)=N1 LOQQVLXUKHKNIA-UHFFFAOYSA-N 0.000 description 1
- QGHREAKMXXNCOA-UHFFFAOYSA-N thiophanate-methyl Chemical compound COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC QGHREAKMXXNCOA-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
Definitions
- the subject matter of the present invention is a device, preferably in the form of a plaster, for the administration of systemic active substances for the treatment of plants and in particular of trees.
- the patch is characterized by a drug-containing matrix with a foam-like structure.
- EP 0 254 196 B1 discloses a device for transcuticular administration of
- the device is in the form of a drug carrier storing the active ingredient, wherein the surface of the drug carrier is formed as a contact layer to the plant surface, through which the active ingredient is released into the plant.
- the device may additionally have a self-adhesive layer and have a contact area of up to 20 cm 2 .
- EP 0 734 650 B1 discloses plaster preparations for the treatment of plants which have a layer of an agrochemically active substance, at least one adhesive and optionally one or more additives in which these substances are dispersed in a solid matrix.
- These plant patches contain the active ingredient in a relatively inflexible polymer matrix (e.g., PVC, polypropylene, or polybutadiene), thereby increasing the applicability of these patches to application to flat surfaces, e.g. Leaf surfaces, or even smooth, green stems of vegetables is limited.
- a relatively inflexible polymer matrix e.g., PVC, polypropylene, or polybutadiene
- DE 39 22 366 A1 discloses a device comprising a backing layer and a drug carrier acting as a contact layer to the plant surface for delivering systemic active substances to plants.
- the device has a deformable drug reservoir that is adaptable to uneven surfaces, allowing the delivery of drugs through plant surfaces consisting of secondary and hardened terminal tissues that are not covered by a cuticle. All these devices are in particular in view of their applicability to strains or branches of plants, especially on old trees that have a larger diameter and circumference and prone to severe cracking of the bark, in need of improvement. Since devices with preferably larger drug-containing contact surfaces, ie larger patches, must be used, this applies
- the present invention is therefore based on the object to provide a device which is particularly suitable for the delivery of systemic drugs to stems and branches of plants with secondary terminating tissue and thereby avoids the disadvantages of the prior art.
- the device should have good adhesive properties and high ductility so that it can be securely fastened on woody, extremely uneven and even larger surfaces.
- the device according to the invention for the application of active substances to plants, preferably in the form of a plaster, which is characterized in that it has a foamed active substance-containing matrix.
- the active substance-containing matrix is an active substance-containing composition of at least one polymer and / or elastomers, preferably an active substance-containing adhesive and particularly preferably a medicated hot melt adhesive.
- the patch according to the invention corresponds to a plant or tree patch. It can be brought into intimate contact with the plant so that the systemic agent contained in the matrix passes through the stem, branches, leaves or stems into the plant where it is distributed over the plant's conduit system.
- the patch contains a backing layer, a drug-containing matrix, and a peelable protective layer that protects the drug-containing matrix for storage and transport.
- An adhesive, adhesive-containing cover layer may additionally be present between this protective layer and the matrix.
- these can preferably be dispensed with in the case of the patches according to the invention if the matrix is self-adhesive.
- a backing layer may also be dispensable, in particular, if the active ingredient contained in the matrix is particularly insensitive to water or weather or the patch is not applied in the field.
- the preferably active substance-impermeable backing layer completes the structure of the plaster on the side facing away from the plant.
- Suitable materials for forming the backing layer are polymers (such as polyethylene terephthalate (PET), polyvinyl chloride (PVC) or polystyrene (PS)), paper, thin metal foils (eg of aluminum) or composites of the aforementioned materials.
- PET polyethylene terephthalate
- PVC polyvinyl chloride
- PS polystyrene
- the backing layer can be stained so that the patch is clearly visible on the plant.
- the backing layer may be formed such. B. by a metal or textile insert that it serves as a support layer for stabilizing the laminate.
- the backing layer has a larger area than the subsequent active substance-containing matrix and is coated on its underside with a pressure-sensitive adhesive material. As a result, it also serves to attach the active ingredient-containing matrix to the plant.
- a further, separate adhesive layer can be omitted.
- the matrix containing the active substance which acts as a drug reservoir or drug carrier, can consist of one or more layers, wherein not all layers must contain an active ingredient.
- a matrix composed of several layers can contain different active substances (for example two separate active substances in two separate layers) and thus form a depot of an active substance combination.
- the one or more matrix layer (s) may also contain agents that accelerate or retard the release of the drug.
- Suitable release accelerators include butyrolactone, N-methylpyrrolidone (NMP) and N-octylpyrrolidone (NOP).
- the matrix material preferably consists of at least one polymer or elastomers, which z.
- tackifiers may be added to form a self-adherent (ie, pressure-sensitive) drug-containing matrix.
- the matrix can also be constructed from a self-adhesive, ie pressure-sensitive adhesive polymer. Polymers of suitable composition and glass transition temperature are known to the person skilled in the art.
- thermoplastic hot melt adhesives based on natural and synthetic rubbers (elastomers) and other synthetic polymers such as ethylene-vinyl acetate copolymers (preferably those with a VA content of 20-65%), polyacrylates, polymethacrylates, polyurethanes, Polyolefins, polyvinyl derivatives, polyesters or silicones with appropriate additives such as adhesive resins, plasticizers, stabilizers and other excipients where necessary.
- rubbers elastomers
- other synthetic polymers such as ethylene-vinyl acetate copolymers (preferably those with a VA content of 20-65%), polyacrylates, polymethacrylates, polyurethanes, Polyolefins, polyvinyl derivatives, polyesters or silicones with appropriate additives such as adhesive resins, plasticizers, stabilizers and other excipients where necessary.
- Suitable polymers also include hot melt adhesives, so-called "hotmelts.” These are adhesives which bind physically and are present in one-component solid and solvent-free form at room temperature.
- Polymers and copolymers such as ethylene-vinyl acetate, ethylene / CO copolymers, ethylene / vinyl acetate / CO terpolymers, ethylene / acrylate / CO terpolymers, propylene / hexene copolymers, polybutenes, SIS / SBS copolymers, thermoplastic elastomers and amorphous polyolefins, b) polyadducts such as linear, thermoplastic polyurethanes and c) polycondensates such as copolyesters, polyamide resins, copolyamides, polyamide / EVA copolymers, polyamide / siloxane copolymers, polyesteramides, polyetheresteramides, polyesteramidimines and polyetheramides.
- hot melt adhesives have not: “sticking”, 5th up l., Springer Verlag, Berlin Heidelberg, (2005) pp. 206-215.
- hot melt adhesives are referred to in the present specification as "hot melt adhesive.” They are at room temperature are pressure-sensitive and thus differ from heat sealants, which are not intended here, which are non-sticky at room temperature, liquefy on heating and form on cooling to solidify and bond.
- processing temperature should be higher than 50 0 C, since the "processing temperature” is usually above, preferably above 90 0 C and more preferably between 110 0 C and 150 0 C. Preferably, the softening temperature is between 70- 85 ° C.
- postcrosslinking by UV or electron beam irradiation may be appropriate ("processing temperature” in this specification means the temperature at which the gas is introduced into the melt of the polymer or elastomer.)
- Hot melt adhesives also known as hot melt pressure sensitive adhesives, hot melt adhesives or hot melt self-adhesives
- hot melt adhesives are based on block copolymers and have the advantage of being "pressure-sensitive” even at room temperature. They are characterized by their many possible variations, because the targeted reduction of the glass transition temperature of the hot melt adhesive composition due to the selection of tackifiers, plasticizers and the polymer molecule size and the molecular distribution of the insert components, the necessary functional bonding is guaranteed even at critical points.
- the high shear strength of the hot-melt adhesive is achieved by the high cohesion of the polymers.
- the good tack results from the range of tackifiers and plasticizers used.
- the hot-melt adhesive is preferably based on block copolymers, in particular AB, ABA block copolymers or mixtures thereof.
- the hard phase A is predominantly polystyrene or its derivatives
- the soft phase B contains ethylene, propylene, butylene, butadiene, isoprene or mixtures thereof, particularly preferably ethylene and butylene or mixtures thereof.
- polystyrene blocks can also be present in the soft phase B, up to 20% by weight.
- the total styrene content should always be lower than 35 wt .-%. Preference is given to styrene shares between 5% and 30%, since a low styrene content makes the adhesive smoother.
- the hot-melt adhesive composition has the following composition:
- the aliphatic or aromatic oils, waxes and resins serving as tackifiers are preferably hydrocarbon oils, waxes and resins, or mixtures thereof.
- plasticizers find medium or long chain fatty acids and / or their esters use. These additives serve to adjust the adhesive properties and stability.
- the matrix material described in the prior art auxiliaries and additives such.
- plasticizers, thickening and swelling agents, drug penetration enhancers, tackifiers, preservatives, disinfectants, pH regulators, antioxidants, stabilizers, crosslinking agents, fillers and / or foam stabilizers may be added.
- plasticizers, thickening and swelling agents, drug penetration enhancers, tackifiers, preservatives, disinfectants, pH regulators, antioxidants, stabilizers, crosslinking agents, fillers and / or foam stabilizers may be added.
- Such substances are described in particular in DE 39 22 366 A1 (eg column 4, line 47 - column 6, line 40).
- This document is particularly incorporated by reference and incorporated by reference herein.
- Other documents of the prior art in this connection are the documents cited at the outset EP 0 254 196 B1 and EP 0 734 650 B1, to which reference is likewise expressly made for the purpose of disclosure.
- the hot melt adhesive preferably has a softening point above 50 0 C, preferably 70 0 C to 220 0 C, most preferably 75 ° C to 120 0 C.
- the hot melt adhesive compositions are preferably adjusted so that they radians at a frequency of 0.1 / s have a dynamic-complex glass transition temperature of less than 10 0 C., preferably from 0 0 C to -30 0 C, most preferably from -6 0 C to -25 ° C, exhibit. Since high demands are placed on the adhesive properties of the adhesive according to the invention, the hot melt adhesive should have a high tack for easy application.
- the patch according to the invention is characterized in that the matrix is foamed. This applies both to a matrix of the described elastomers and / or polymers as well as to the inventively preferred adhesives, in particular the hot-melt adhesives.
- the distribution of the active ingredients in the adhesive is preferably carried out in a Thermorizing meaner or a thermo-homogenizer such as in a thermo-kneader or a screw system.
- the addition of the active ingredient can be carried out in the completely prepared adhesive.
- the active ingredient can also be incorporated in an intermediate or in the starting mixture.
- the elastomers, polymers or adhesives provided with the active ingredients are preferably foamed with inert gases such as nitrogen, carbon dioxide, noble gases, hydrocarbons or air or mixtures thereof.
- inert gases such as nitrogen, carbon dioxide, noble gases, hydrocarbons or air or mixtures thereof.
- additional foaming by thermal decomposition of gas evolving substances such as azo, carbonate and hydrazide compounds has been found to be suitable.
- the degree of foaming, ie, the gas content of the matrix should be at least about 5% by volume and may range up to about 85% by volume. In practice, values of from 10% by volume to 75% by volume, preferably up to 50% by volume, have proven successful. This property is controlled by the composition of the mass or technological parameters such as processing temperature or expansion properties of the gas.
- adhesives or hot-melt adhesives based on ethylene-vinyl acetate are particularly suitable.
- compositions are advantageously processed at temperatures between 50 and 80 ° C, i. brought to soften and melt.
- Another key parameter for adjusting the degree of foaming is the pressure with which the promoted active substance-containing adhesive counteracts the expanding gas.
- the gas bubble size in the foam matrix may vary from 0.05 mm to 3 mm (in diameter) depending on the processing temperature and the gas pressure.
- the foamed hot melt adhesive cools down uncompressed, the gas bubbles remain intact, which contributes to the formation of a stable foam (as opposed to a soft foam). Thanks to this property, the active substance-containing matrix retains its foamed consistency throughout the entire application time of the plaster.
- the foamed mass is cooled, which can be achieved by a cooled base or a cooled roll.
- the use of a cooling tunnel, by which the foamed mass is transported on its base, has proven to be very expedient.
- the cooling temperature is room temperature (20-22 ° C) or temperatures below (0 to 20 ° C) in question. Especially with rolls the use of an additional cooling tunnel is very beneficial.
- the microstructure of the foam may be open, semi-open or even closed-cell. Open cell structures are preferred because they may favor the release of volatile drugs from the patch.
- the advantageous properties of the matrix according to the invention consist of low adhesive consumption, high tack and good conformability even on uneven surfaces. Also, a certain elasticity and a certain plasticity of the foamed matrix can be optimally utilized in the field of active ingredient patches.
- Another advantage of the foam structure is that the transport of the active ingredients is increased disproportionately by the vacuoles in the foam, whereby very good release rates can be achieved.
- a particularly suitable method for producing the foamed adhesive according to the invention operates according to the foam-mix system.
- the mixing pressures gas / thermoplastic in the system are 40 to 100 bar, preferably 40 to 70 bar.
- the "foamed adhesive" produced in this way can then be conveyed via a conduit into the applicator unit
- the commercial unit uses commercially available nozzles, extruder or chamber systems (cf., for example, DE 197 49 467 A1).
- the patches according to the invention are suitable for the administration of basically all systemic active ingredients or combinations of active substances which find application in plant protection.
- Such z As viricidal, bactericidal, fungicidal, acaricidal and insecticidal agents are known in the art and z. In the list of authorized plant protection products in Germany, published by the Federal Office for Consumer Protection and Food Safety.
- agents include, but are not limited to, abamectin, acequinocyl, acetamiprid, aclonifen, aluminum phosphide, amidosulfuron, azadirachtin (neem), azoxystrobin, benzoic acid, beta-cyfluthrin; Bifenthrin, Boscalid, Bromoxynil, Bromuconazole, Buprofezin, Carfentrazone, Chloridazon, Chlorpyrifos, Clofentezine, Clothianidin, Cyfluthrin, Cymoxanil, Cyproconazole, Cyprodinil, Deltamethrin, Dicamba, Dichlorvos, Difenoconazole, Diflubenzuron, Dimethoate, Dimethomorph, Epoxiconazole, Fenarimol, Fenpropidin, Flufenacet, Fluquinconazole, fosetyl, glyphosate, imazal
- acetamiprid clothianidin, difenoconazole, dimethoate, dimethomorph, epoxiconazole, fenpropidin, flufenacet, fluquinconazole, fosetyl, imazalil, imidacloprid, iprodione, kresoxim-methyl, lambda-cyhalothrin, metconazole, tetraconazole, thiabendazole, thiacloprid and thiamethoxam.
- the active ingredient or agents are in the matrix mass z.
- the main feature characterizing the plant protection patches according to the invention is the foamed active substance-containing matrix, whereby various advantages are achieved. To the This gives the patches a very high degree of flexibility and adaptability, ie it is also possible to produce flexible patches with a very large matrix area.
- the patches are suitable for receiving relatively large amounts of active ingredient, which allow long periods of use.
- the matrix present as at least one layer may be relatively thick due to its foam structure.
- layer thicknesses can range from 1 mm to 15 cm, with a thickness of 3 mm to 2 cm being preferred.
- the application amount of active ingredient-containing matrix material is preferably between 50 g / m 2 and 1000 g / m 2 , more preferably between 350 g / m 2 and 700 g / m 2 .
- the foamed matrix structure significantly increases the adhesion (Anfubbklebrtechnik) of a pressure-sensitive adhesive-containing matrix-containing, whereby the application spectrum of the patch is also extended.
- the active ingredient-containing matrix may be formed in one piece or a structure such. As diamonds, cubes, with intervening matrix-free sections, which also the flexibility of the patch can be influenced.
- the patch can be produced as a continuous product with discrete, separate matrix surfaces. Fracture lines can be present between these matrix surfaces, whereby a patch of any length can be produced by the user himself, which is specially adapted for its application (for example as a tree patch to thick, woody stems).
- the present invention thus also relates to the use of the devices or patches according to the invention for the delivery of systemic active substances to plants and in particular to trees via their stems or branches (tree patches).
- FIG. 1 shows a possible embodiment of the plant protection plaster according to the invention.
- the sections with drug-containing matrix (1) are interrupted by matrix-free sections, ie here, for example, the film carrier / backing layer (2) becomes visible
- the distance between the matrix sections is in this particular case, for example 20 mm and the width of the protruding film at the upper and lower edge (FIG.
- 20 mm may be present between the matrix sections, and predetermined rupture lines (eg perforations) (3) may be present between the matrix sections, allowing the user to self-produce patches of any length B. here 58 cm x 14 cm.
- An active substance-containing foamed matrix material (altogether 750 g) in the form of a hot-melt adhesive is produced from the following components:
- the components are in the o.a. Order at max. Melted 85 ° C and homogenized in a Thermorlick alterner.
- the prepared mass is heated in a melter to the required temperature and further tempered.
- a suitable pump here gear pump
- it is fed to the foaming unit.
- the heart of the foaming unit is the Mixstation.
- both the molten adhesive can be metered in the first stage and mixed in the second stage with the gas and then homogenized.
- the foam thus produced is then applied to the carrier material in a heated pressure hose by means of a specially designed application system.
- the application system is controlled by a pattern control system and can coat both full-surface and intermittent. After the coating
- the web can be cooled to a temperature that allows further processing, here production of rolls.
- the degree of foaming is between 50 and 70 vol .-%.
- the active substance-containing matrix foam is applied with a layer thickness of about 1.2 mm to a support, as shown in FIG. The order is 690 g / m 2 .
- the result is a plaster with dimensions of 14 cm x 58 cm, which is provided with a peelable protective film on the still free surface of the matrix. This patch is due to its size and adaptability as a tree patch best suited.
- a drug-containing foamed matrix material (total 750g) in the form of a
- Hot melt adhesive is prepared from the following components:
- Acetamidopride (99.8%) 8.33% by weight
- the components are melted in the above order and homogenized at about 120 0 C in a Thermorizing whatsoever.
- a suitable pump here gear pump, it is fed to the foaming unit.
- the heart of the foaming unit is the Mixstation.
- Gear pump construction can be dosed both the molten adhesive in the first stage as well as mixed in the second stage with the gas and then homogenized.
- the foam thus produced is now applied in a heated pressure hose by means of a specially designed application system on the web-shaped carrier material.
- the application system is controlled by a pattern control system and can coat both full-surface and intermittent. After coating, the web is cooled to a temperature of about 7 ° C, so that the further processing for the production of individual patches is possible.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Environmental Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Botany (AREA)
- Plant Pathology (AREA)
- Toxicology (AREA)
- Dentistry (AREA)
- Zoology (AREA)
- Medicinal Preparation (AREA)
- Cultivation Of Plants (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007052339A DE102007052339A1 (de) | 2007-11-02 | 2007-11-02 | Pflanzenpflaster mit geschäumter Matrix |
| PCT/EP2008/009144 WO2009056300A2 (de) | 2007-11-02 | 2008-10-30 | Pflanzenpflaster mit geschäumter matrix |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2211612A2 true EP2211612A2 (de) | 2010-08-04 |
Family
ID=40514294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08845229A Withdrawn EP2211612A2 (de) | 2007-11-02 | 2008-10-30 | Pflanzenpflaster mit geschäumter matrix |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20100260820A1 (de) |
| EP (1) | EP2211612A2 (de) |
| JP (1) | JP2011501956A (de) |
| CA (1) | CA2704026A1 (de) |
| DE (1) | DE102007052339A1 (de) |
| MX (1) | MX2010004890A (de) |
| WO (1) | WO2009056300A2 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101549958B1 (ko) * | 2014-04-16 | 2015-09-03 | 나용준 | 수목 외과수술 방법 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1760060U (de) * | 1957-04-01 | 1958-01-16 | Habil Dipl-Chem Georg D Roemer | Baum- bzw. pflanzenring aus poroesen schaumstoffen. |
| US4059714A (en) | 1976-08-02 | 1977-11-22 | Nordson Corporation | Hot melt thermoplastic adhesive foam system |
| US4200207A (en) | 1978-02-01 | 1980-04-29 | Nordson Corporation | Hot melt adhesive foam pump system |
| US5343653A (en) * | 1986-07-17 | 1994-09-06 | Celaflor Gmbii | Device for transcuticular application of active substance to plants |
| DE3723380A1 (de) * | 1986-07-17 | 1988-04-14 | Shell Agrar Gmbh & Co Kg | Vorrichtung zur transcuticularen applikation von wirkstoffen an pflanzen |
| JPS6333301A (ja) * | 1986-07-17 | 1988-02-13 | セラフロール・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | 植物への活性物質の経表皮膜施用のための器具 |
| DE3922366A1 (de) * | 1989-07-07 | 1991-01-17 | Lohmann Therapie Syst Lts | Vorrichtung zur abgabe systemischer wirkstoffe an pflanzen und verwendung derselben |
| JP3835834B2 (ja) * | 1995-03-15 | 2006-10-18 | バイエルクロップサイエンス株式会社 | 植物処理用貼付剤 |
| DE19749467C2 (de) * | 1997-11-08 | 1999-09-23 | Beiersdorf Ag | Wirkstoffhaltige Pflaster |
| DE19825499C2 (de) * | 1998-06-08 | 2003-07-17 | Beiersdorf Ag | Wirkstoffhaltige Pflaster |
| DE19909493C1 (de) * | 1999-03-04 | 2000-11-02 | Ecs Environment Care Sys Gmbh | Verfahren zur Herstellung einer flächigen Zubereitung mit wenigstens einer einschichtigen Wirkstoffmatrix |
| DE10305224A1 (de) | 2003-02-07 | 2004-08-19 | Nordson Corp., Westlake | Verfahren und Vorrichtung zum Aufbringen von geschäumtem thermoplastischen Fluid, insbesondere geschäumtem Heißschmelz-Klebstoff auf ein Substrat |
-
2007
- 2007-11-02 DE DE102007052339A patent/DE102007052339A1/de not_active Withdrawn
-
2008
- 2008-10-30 US US12/740,737 patent/US20100260820A1/en not_active Abandoned
- 2008-10-30 JP JP2010531455A patent/JP2011501956A/ja active Pending
- 2008-10-30 CA CA2704026A patent/CA2704026A1/en not_active Abandoned
- 2008-10-30 EP EP08845229A patent/EP2211612A2/de not_active Withdrawn
- 2008-10-30 WO PCT/EP2008/009144 patent/WO2009056300A2/de not_active Ceased
- 2008-10-30 MX MX2010004890A patent/MX2010004890A/es unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009056300A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007052339A1 (de) | 2009-05-07 |
| US20100260820A1 (en) | 2010-10-14 |
| MX2010004890A (es) | 2010-08-16 |
| WO2009056300A2 (de) | 2009-05-07 |
| WO2009056300A3 (de) | 2010-04-22 |
| JP2011501956A (ja) | 2011-01-20 |
| CA2704026A1 (en) | 2009-05-07 |
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