WO1990000005A1 - Pesticides microencapsules a leurre - Google Patents

Pesticides microencapsules a leurre Download PDF

Info

Publication number
WO1990000005A1
WO1990000005A1 PCT/US1989/002903 US8902903W WO9000005A1 WO 1990000005 A1 WO1990000005 A1 WO 1990000005A1 US 8902903 W US8902903 W US 8902903W WO 9000005 A1 WO9000005 A1 WO 9000005A1
Authority
WO
WIPO (PCT)
Prior art keywords
poison
acetate
encapsulated
capsule
lure
Prior art date
Application number
PCT/US1989/002903
Other languages
English (en)
Inventor
Bruce K. Redding, Jr.
Original Assignee
Redding Bruce K Jr
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 Redding Bruce K Jr filed Critical Redding Bruce K Jr
Publication of WO1990000005A1 publication Critical patent/WO1990000005A1/fr

Links

Classifications

    • 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
    • A01N25/26—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 in coated particulate form
    • 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
    • A01N25/002—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 containing a foodstuff as carrier or diluent, i.e. baits
    • A01N25/006—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 containing a foodstuff as carrier or diluent, i.e. baits insecticidal
    • 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
    • A01N25/26—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 in coated particulate form
    • A01N25/28—Microcapsules or nanocapsules

Definitions

  • This invention relates to microencapsulated poisons and to encapsulated poisons using a lure or baiting technique.
  • This invention may help destroy such plant and animal pests as fungi, bacteria, insects, rodents, birds, worms, and the like.
  • the odor in most such pesticides is intended to repel pests from a certain area.
  • the repulsion odor is generally shortlived and is, therefore, an
  • Microencapsulation provides a time-release function, isolating the pesticide until it is triggered. Microencapsulation increases the efficiency of use, reduces handling and environmental hazards, improves compatibility with other chemicals, extends shelf life, and masks poison odors and tastes.
  • Such a product would bait or lure a pest to a capsule and release a poison only when the pest digests or attacks the capsule. Until that time, the odor of the poison would not be allowed to escape the capsule. Only the odor of the bait would be able to escape.
  • This bait-and- kill approach is used in larger pest traps, where an odor emanates from a box containing an adhesive. As the pest enters, pursuing the bait odor, it becomes trapped by the adhesive and eventually dies.
  • a microencapsulated pesticide with a similar bait-and-kill technique would be more
  • This invention uses a capsule within a capsule to bait and kill pests.
  • the inner, smaller capsule contains a pesticide core surrounded by a polymeric shell.
  • the outer capsule contains a substance that will both attract a pest and mask the odor of the poison. All that escapes the outer capsule is the lure odor, which attracts the pest to the capsule. The pest then breaks or ingests the capsule, which releases the poison that exterminates the pest.
  • Another approach would be to construct the poison capsule with materials known to attract a given pest.
  • An additional approach is to coat a poison capsule with a lure substance.
  • the present invention encompasses encapsulation of substances in liquid, solid or slurry form.
  • Encapsulating walls may or may not be permeable to core material or other materials to which the completed capsules may later be added.
  • Capsules provided by the present invention may be capable of slow-release mechanisms (commonly referred to as "time-release") or may be released during ingestion by the pest.
  • Capsule walls may be made of various polymeric and elastomeric materials.
  • a first object of this invention is to provide a product that attracts a pest to a capsule containing a poison, where the size of the capsule may be termed as either a microcapsule or a large capsule,
  • a second object of the invention is to enable capsules to attract, bait or lure pests to a poison, where the bait also masks, hides or disguises the presence of the poison.
  • a third object of the invention is to provide bait-and-kill encapsulated poisons that will be effective against various forms of "pests", including, but not limited to, farm insects, household insects, mosquitoes, flying insects, ants, bacteria, fungi, rodents, worms, birds and barnacles.
  • a fourth object of this invention is to provide means of luring or baiting a pest to a poison capsule within a larger bait capsule.
  • a fifth object of the invention is to provide a pesticide capsule that is coated with a lure or bait
  • a sixth object of the invention is to provide a pesticide that is contained in a capsule made of lure or bait substance.
  • a seventh object of the invention is to provide methods of making such capsules.
  • Figure 1 shows a preferred embodiment of the invention, in which a capsule exists within another capsule.
  • the inner capsule contains a poison; the outer capsule, a bait substance.
  • Figure 2 is a cross-section of a capsule in an alternative embodiment, in which a lure substance is coated onto a poison-containing capsule.
  • Figure 3 shows a variation of the embodiment in Figure 2 in which a lure substance is imbedded between multiple capsule shell layers.
  • Figure 4 illustrates a method of forming the capsules.
  • Figure 1 shows a preferred embodiment of the invention, in which a larger capsule 8 contains a microcapsule 6 within its confines.
  • the inner shell 2 surrounds poisonous core 1, isolating it from the rest of capsule unit 8.
  • Lure outer core 3 lies between inner shell 2 and outer shell 4 of capsule unit 8.
  • each capsule unit 8 contains several microcapsules 6. As above, pests are attracted by a lure outer core and exterminated when they open or ingest microcapsules 6.
  • FIG. 2 shows a Reservoir-type microcapsule 14 having a single shell layer 12.
  • the capsule contains a single poisonous inner core 1 trapped by a single shell layer 12.
  • Bait substance 13 has been coated onto the outer surface of the shell 12. The bait coating 13 retards diffusion of pesticide odors across shell layer 12 and provides an attracting odor 5 to lure the pest to capsule 14.
  • capsule 9 has multiple shell layers 10 and a single poisonous core 1.
  • Bait substance 11 is either coated on the outer surface of capsule 9, embedded within the shell layers, or is itself the shell material of the outermost shell layer. Multiple shell layers 10 retard diffusion of the poison better than a single shell layer. This approach may be useful for extremely volatile cores.
  • a pest may be attracted with a food source lure, a sex attractant or any such similar effective means of chemically attracting the pest.
  • Examples of potential baits or lures are listed in Tables 1 and 2.
  • Examples of potential shell mater ials for inner shell 2 or outer shell 4 are indicated in Table 4 .
  • FIG 4 illustrates a popular method of capsule manufacture called coacervation.
  • high speed agitation produces small capsules.
  • the small capsules are then filtered from the liquid media and dispersed in a bait substance.
  • This mixture goes through a second coacervation run to form a capsule unit.
  • the agitation level is reduced in the second run, which tends to make larger capsules.
  • the resulting capsule unit 8 contains the inner microcapsule 6 (see Figure 1).
  • the bait substance 3 which becomes the outer core.
  • This experiment produced a bait-and-kill microcapsule with the food source lure as the shell of the capsule itself.
  • Type A, 300 bloom gelatin was combined with 40 grams of gum arabic and 20 grams of ethylcellulose in 3.7 liters of tap water. This solution was mixed at room temperature under mild agitation with a "lightening mixer" operating at 100 r.p.m. After 60 minutes of agitation, a partially dissolved, pre-condensate colloid wall material was formed.
  • the wall material was composed of gelatin, gum arabic and ethylcellulose.
  • the cockroaches which are known to use cellulosic starches and wallpaper pastes as foodstuffs, were attracted to the cellulosic shell
  • the capsules were then dispersed in a beaker containing water and peanut oil. Under mild agitation for 30 minutes, the capsules became coated with the peanut oil.
  • the capsules were then filter-dried and exposed to cockroaches.
  • the peanut oil coating lured the roaches directly to the capsules.
  • the roaches were readily
  • Gelatin-based wall materials have low resistance to Dursban-R permeation, resulting in a short shelf life.
  • the Dursban-R was encapsulated first in a resin-based shell and then in a layer of gelatin.
  • Stage 1 Preparation of Small Capsules
  • Precondensate urea-formaldehyde resin was formed first. 120 grams of urea was mixed at room temperature with 325 grams of a 37% aqueous formaldehyde solution containing 15% Methyl Alcohol. Drops of triethanolamine were added to adjust the pH 8. The mixture was then warmed to 70° (C), keeping the pH below 8.5. After one hour of agitation, 600 ml. of distilled water was added at room temperature. 130.5 grams of the precondensate solution was further diluted with 200 ml. of distilled water, producing a final resin-based, polymeric, urea-formaldehyde wall solution.
  • This mixture was kept under rapid agitation for 60 minutes. This stage, which is generally referred to as an Interfacial Polymerization Process, produced capsules 25 to 65 microns large.
  • Type A, 300 bloom gelatin was mixed at room temperature with 40 grams of gum arabic and 20 grams of ethylcellulose in 3.7 liters of tap water. This mixture was kept under mild agitation for 60 minutes to form a "bloomed" wall material solution.
  • the capsules manufactured in Stage 1 were immersed in the new wall solution, under mild agitation, with heating to 65o (C). After 60 minutes, the mixture was allowed to cool to room temperature while the agitation continued. The capsules were then filter-dried by Buchner funnel
  • This procedure layered the gelatin-based shell material onto the resin-based wall of the capsule, creating a capsule with distinct wall layers.
  • capsules may have unusual strength, slowed release
  • Stage 2 of this experiment the capsules from Stage 1 were filter-dried and mixed with a second core material and a second shell mixture.
  • the dried capsules from Stage 1 were then added to the first mixture, and the resulting second mixture was agitated for another 60 minutes with heating to 65o (C). At the end of the 60-minute time period, the second mixture was allowed to cool naturally to room temperature while
  • the resultant large capsules ranged from 30 to 50 microns in size and had several small capsules encased within each large capsule.
  • the peanut oil deposit lay between the inner urea-formaldehyde layer and the outer gelatin-based layer.
  • the pesticide core material lay in the core of the small capsules.
  • this capsule-within-a-capsule unit worked best.
  • the cockroaches were attracted by peanut oil odors from the outer capsules and began to eat the capsule units.
  • the Dursban-R poison thereby escaped from the small capsules and killed the cockroaches.

Abstract

L'invention concerne un poison microencapsulé contenant un agent attirant (3), dans lequel le poison n'est détectable que lorsque l'insecte nuisible avale ou ouvre la capsule (7) et libère le poison. Le mode de réalisation préféré de l'invention est une capsule (7) contenant une ou plusieurs capsules (6) plus petites. La capsule intérieure (6) contient une matière (1) centrale pesticide entourée par une fine membrane polymère (2). La capsule extérieure (4) contient un agent attirant (8) les insectes nuisibles tel qu'une phéromone ou une source alimentaire, diffusant partiellement à travers l'enveloppe extérieure de la capsule (4). La capsule intérieure (6) se scelle virtuellement dans la partie centrale de poison (1). Ledit agent attirant masque d'éventuelles odeurs de poison s'échappant et dégage une odeur trompeuse (5). Les insectes nuisibles attirés par l'odeur trompeuse, ouvrent ou avalent les capsules (7) libérant ainsi le poison.
PCT/US1989/002903 1988-06-30 1989-06-30 Pesticides microencapsules a leurre WO1990000005A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21377988A 1988-06-30 1988-06-30
US213,779 1988-06-30

Publications (1)

Publication Number Publication Date
WO1990000005A1 true WO1990000005A1 (fr) 1990-01-11

Family

ID=22796479

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1989/002903 WO1990000005A1 (fr) 1988-06-30 1989-06-30 Pesticides microencapsules a leurre

Country Status (1)

Country Link
WO (1) WO1990000005A1 (fr)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996003041A1 (fr) * 1994-07-22 1996-02-08 Ciba-Geigy Ag Microparticules spheriques pourvues d'un revetement de cire interieur depose autour de composes biologiquement actifs
WO1998007315A1 (fr) * 1996-08-21 1998-02-26 The United States Of America, As Represented By The Secretary Of Agriculture Appareil de destruction de parasites
WO1998010646A1 (fr) * 1996-09-14 1998-03-19 The Minister Of Agriculture Fisheries And Food In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Composition pesticide et procede associe
GB2331461A (en) * 1996-09-14 1999-05-26 Mini Agriculture & Fisheries Pesticidal composition and method
FR2772556A1 (fr) * 1997-12-19 1999-06-25 Al Tech Granule repulsif pour animaux et son procede de fabrication
US5925370A (en) * 1997-12-04 1999-07-20 The United States Of America As Represented By The Secretary Of The Navy Biorepellent matrix coating
US6585991B1 (en) * 1999-04-20 2003-07-01 The United States Of America As Represented By The Secretary Of Agriculture Termite bait matrix
US7117631B2 (en) 2004-06-11 2006-10-10 John Peters Microencapsulated animal trap bait and method of luring animals to traps with microencapsulated bait
US7566747B2 (en) 2004-05-07 2009-07-28 The Board Of Trustees Of The University Of Illinois Wax particles for protection of activators, and multifunctional autonomically healing composite materials
US7569625B2 (en) 2006-06-02 2009-08-04 The Board Of Trustees Of The University Of Illinois Self-healing elastomer system
US7612152B2 (en) 2005-05-06 2009-11-03 The Board Of Trustees Of The University Of Illinois Self-healing polymers
US7723405B2 (en) 2006-01-05 2010-05-25 The Board Of Trustees Of The University Of Illinois Self-healing coating system
AU2007200739B2 (en) * 2006-02-21 2011-12-08 Sumitomo Chemical Company, Limited Microencapsulated pyrethrin
EP2415356A3 (fr) * 2010-08-02 2012-04-04 Katz Biotech AG Substrat d'alimentation microencaspulé pour la culture d'araignées prédatrices
ITMI20111945A1 (it) * 2011-10-26 2013-04-27 Zapi Ind Chimiche Spa Formulazione in forma idonea a veicolare un quantitativo dosato di una sostanza attiva
AU2010202590B2 (en) * 2009-06-22 2013-11-14 Animal Control Technologies (Australia) Pty Ltd Formulations for Vertebrate Pest Control
US8658223B2 (en) 2011-07-13 2014-02-25 Clarke Mosquito Control Products, Inc. Insecticidal compositions and methods of using the same
DE102015016114A1 (de) * 2015-12-11 2017-06-14 Katz Biotech Ag Flüssigkernkapseln zur Bekämpfung von Schädlingen
CN107318834A (zh) * 2017-07-01 2017-11-07 山东大农药业有限公司 农药缓释胶囊及其壳体
WO2019236669A1 (fr) * 2018-06-08 2019-12-12 The United States Of America, As Represented By The Secretary Of Agriculture Compositions contenant des composés organiques microencapsulés
WO2021013917A1 (fr) 2019-07-23 2021-01-28 Fachhochschule Bielefeld Nouvelle formulation à base d'un oléogel, en particulier permettant la libération de composants volatiles, et procédé permettant la fabrication de celui-ci
US10980235B2 (en) 2017-02-13 2021-04-20 Clarke Mosquito Control Products, Inc. Insecticidal composition
US11412732B2 (en) * 2018-05-17 2022-08-16 International Business Machines Corporation Light-triggered sustained release of pesticides
WO2024003267A1 (fr) * 2022-06-30 2024-01-04 Kapsera S.A.S. Microcapsules contrôlant la diffusion d'un composé organique actif

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056723A (en) * 1960-11-21 1962-10-02 Diamond Alkali Co Method of preparing pelletized pesticidal compositions
US4056610A (en) * 1975-04-09 1977-11-01 Minnesota Mining And Manufacturing Company Microcapsule insecticide composition
US4409201A (en) * 1980-05-31 1983-10-11 Hoechst Aktiengesellschaft Pressure-resistant microcapsules with a polyamide shell and a polyurethane-polyurea inner mass and process for their manufacture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056723A (en) * 1960-11-21 1962-10-02 Diamond Alkali Co Method of preparing pelletized pesticidal compositions
US4056610A (en) * 1975-04-09 1977-11-01 Minnesota Mining And Manufacturing Company Microcapsule insecticide composition
US4409201A (en) * 1980-05-31 1983-10-11 Hoechst Aktiengesellschaft Pressure-resistant microcapsules with a polyamide shell and a polyurethane-polyurea inner mass and process for their manufacture

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996003041A1 (fr) * 1994-07-22 1996-02-08 Ciba-Geigy Ag Microparticules spheriques pourvues d'un revetement de cire interieur depose autour de composes biologiquement actifs
WO1998007315A1 (fr) * 1996-08-21 1998-02-26 The United States Of America, As Represented By The Secretary Of Agriculture Appareil de destruction de parasites
WO1998010646A1 (fr) * 1996-09-14 1998-03-19 The Minister Of Agriculture Fisheries And Food In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Composition pesticide et procede associe
GB2331461A (en) * 1996-09-14 1999-05-26 Mini Agriculture & Fisheries Pesticidal composition and method
GB2331461B (en) * 1996-09-14 2000-04-26 Mini Agriculture & Fisheries Pesticidal use of halogenated hydrocarbons
US5925370A (en) * 1997-12-04 1999-07-20 The United States Of America As Represented By The Secretary Of The Navy Biorepellent matrix coating
FR2772556A1 (fr) * 1997-12-19 1999-06-25 Al Tech Granule repulsif pour animaux et son procede de fabrication
EP0937392A1 (fr) * 1997-12-19 1999-08-25 Al'Tech Granulé répulsif pour animaux et son procédé de fabrication
US6585991B1 (en) * 1999-04-20 2003-07-01 The United States Of America As Represented By The Secretary Of Agriculture Termite bait matrix
US7566747B2 (en) 2004-05-07 2009-07-28 The Board Of Trustees Of The University Of Illinois Wax particles for protection of activators, and multifunctional autonomically healing composite materials
US7117631B2 (en) 2004-06-11 2006-10-10 John Peters Microencapsulated animal trap bait and method of luring animals to traps with microencapsulated bait
US7612152B2 (en) 2005-05-06 2009-11-03 The Board Of Trustees Of The University Of Illinois Self-healing polymers
US7723405B2 (en) 2006-01-05 2010-05-25 The Board Of Trustees Of The University Of Illinois Self-healing coating system
AU2007200739B2 (en) * 2006-02-21 2011-12-08 Sumitomo Chemical Company, Limited Microencapsulated pyrethrin
US7569625B2 (en) 2006-06-02 2009-08-04 The Board Of Trustees Of The University Of Illinois Self-healing elastomer system
AU2010202590B2 (en) * 2009-06-22 2013-11-14 Animal Control Technologies (Australia) Pty Ltd Formulations for Vertebrate Pest Control
EP2415356A3 (fr) * 2010-08-02 2012-04-04 Katz Biotech AG Substrat d'alimentation microencaspulé pour la culture d'araignées prédatrices
US10349662B2 (en) 2011-07-13 2019-07-16 Clarke Mosquito Control Products, Inc. Insecticidal compositions and methods of using the same
US8658223B2 (en) 2011-07-13 2014-02-25 Clarke Mosquito Control Products, Inc. Insecticidal compositions and methods of using the same
US11856957B2 (en) 2011-07-13 2024-01-02 Clarke Mosquito Control Products, Inc. Insecticidal compositions and methods of using the same
US10709139B2 (en) 2011-07-13 2020-07-14 Clarke Mosquito Control Products, Inc. Insecticidal compositions and methods of using the same
ITMI20111945A1 (it) * 2011-10-26 2013-04-27 Zapi Ind Chimiche Spa Formulazione in forma idonea a veicolare un quantitativo dosato di una sostanza attiva
JP2019503996A (ja) * 2015-12-11 2019-02-14 カツビオテック アーゲーＫａｔｚ Ｂｉｏｔｅｃｈ Ａｇ 害虫駆除用液体コアカプセル剤
WO2017097282A1 (fr) * 2015-12-11 2017-06-15 Katz Biotech Ag Capsules à noyau liquide pour lutter contre des parasites
US11140897B2 (en) 2015-12-11 2021-10-12 Katz Biotech Ag Liquid-core capsules for pest control
DE102015016114A1 (de) * 2015-12-11 2017-06-14 Katz Biotech Ag Flüssigkernkapseln zur Bekämpfung von Schädlingen
US10980235B2 (en) 2017-02-13 2021-04-20 Clarke Mosquito Control Products, Inc. Insecticidal composition
CN107318834A (zh) * 2017-07-01 2017-11-07 山东大农药业有限公司 农药缓释胶囊及其壳体
US11412732B2 (en) * 2018-05-17 2022-08-16 International Business Machines Corporation Light-triggered sustained release of pesticides
WO2019236669A1 (fr) * 2018-06-08 2019-12-12 The United States Of America, As Represented By The Secretary Of Agriculture Compositions contenant des composés organiques microencapsulés
WO2021013917A1 (fr) 2019-07-23 2021-01-28 Fachhochschule Bielefeld Nouvelle formulation à base d'un oléogel, en particulier permettant la libération de composants volatiles, et procédé permettant la fabrication de celui-ci
WO2024003267A1 (fr) * 2022-06-30 2024-01-04 Kapsera S.A.S. Microcapsules contrôlant la diffusion d'un composé organique actif

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