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WO2025109562A1 - Suspension concentrée à usage agricole - Google Patents

Suspension concentrée à usage agricole Download PDF

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Publication number
WO2025109562A1
WO2025109562A1 PCT/IB2024/061783 IB2024061783W WO2025109562A1 WO 2025109562 A1 WO2025109562 A1 WO 2025109562A1 IB 2024061783 W IB2024061783 W IB 2024061783W WO 2025109562 A1 WO2025109562 A1 WO 2025109562A1
Authority
WO
WIPO (PCT)
Prior art keywords
suspension
concentrated
concentrated aqueous
aqueous suspension
clay
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.)
Pending
Application number
PCT/IB2024/061783
Other languages
English (en)
Inventor
Gert Johannes BADENHORST
Anell SCOTT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolfes Agri Pty Ltd
Original Assignee
Rolfes Agri Pty Ltd
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 Rolfes Agri Pty Ltd filed Critical Rolfes Agri Pty Ltd
Publication of WO2025109562A1 publication Critical patent/WO2025109562A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A01N25/02—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 liquids as carriers, diluents or solvents
    • A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
    • 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
    • A01N25/08—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 solids as carriers or diluents
    • 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
    • A01N25/08—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 solids as carriers or diluents
    • A01N25/10—Macromolecular compounds
    • 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
    • A01N25/30—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 characterised by the surfactants

Definitions

  • the present invention relates to a concentrated suspension for agricultural use, and more specifically to a concentrated aqueous suspension having a higher loading of active ingredients and improved settling characteristics.
  • Suspension concentrate formulations are known in the art for applying an active ingredient (ordinarily a fungicide, herbicide, insecticide or fertilizer) to a plant. This is done by taking the suspension concentrate and mixing it with a diluent (usually water) before applying it via spraying.
  • a diluent usually water
  • the concentrate should be easily mixable with the diluent to create a homogenous final product of a desired final concentration which will not clog a spray nozzle.
  • Suspension concentrates are limited by the maximum concentration at which the active ingredient can be included into the concentrate. This maximum concentration is principally determined by the point at which the active ingredient agglomerates and settles out of the suspension. After settling the active ingredient cannot then be easily mixed back into the suspension to create a homogenous mixture.
  • a calcium suspension concentrate may include up to 400g/L of fine calcium carbonate powder in its formulation before premature settling becomes an issue.
  • a concentrated aqueous suspension for use in agriculture, the concentrated suspension comprising an active ingredient; a clay; a wetting agent; and a dispersant wherein the specific gravity of the concentrated suspension is at least 1 .6.
  • the active ingredient may comprise between 60-70% (w/w) of the concentrated suspension.
  • the active ingredient may be a plant nutrient.
  • the plant nutrient may be an inorganic plant nutrient.
  • the inorganic plant nutrient may be selected from the group consisting of sources of nitrogen, phosphorous, potassium, calcium, sulphur, magnesium, zinc, manganese, iron, copper, molybdenum and boron, in any combination.
  • the active ingredient may be a chemical agent.
  • the chemical agent may be selected from the group comprising a fungicide, herbicide, insecticide, nematicide or bactericide, in any combination.
  • the wetting agent may comprise between 3-10% (w/w) of the concentrated suspension.
  • the wetting agent may be an ethoxylated polyarylphenol phosphate amine salt.
  • the clay may comprise between 0.45-0.9% (w/w) of the concentrated suspension.
  • the clay may be a phyllosilicate clay.
  • the phyllosilicate clay may be smectite.
  • the dispersant may comprise between 2-5% (w/w) of the concentrated suspension.
  • the dispersant may be selected from the group consisting of water-soluble polymers, acrylic polymers and naphthalene sulphonates, in any combination.
  • the dispersant may be selected from the group consisting of acrylic polymer sodium salt, poly alkyl naphthalene sulfonate and acrylates copolymer, in any combination.
  • the concentrated suspension may further comprise a thickening agent.
  • the thickening agent may comprise between 0.05- 0.2% (w/w) of the concentrated suspension.
  • the thickening agent may be selected from the group consisting of starches, sugar polymers and gelling agents, in any combination.
  • the thickening agent may be xanthan gum.
  • the concentrated suspension may further comprise an antifoaming agent.
  • the concentrated suspension may further comprise a biocide.
  • the biocide may be benzisothiazolinone.
  • the concentrated suspension may further comprise a pigment.
  • a method of manufacture of a concentrated suspension as described herein above, the method comprising the steps of: i) adding a wetting agent and dispersant to an initial aqueous solution to form a surfactant solution; ii) adding the active ingredient to the surfactant solution to form an active suspension; iii) adding a clay to the active suspension to form the stabilized suspension; and iv) milling the stabilized suspension while stirring to form a concentrated suspension, wherein the specific gravity of the concentrated suspension is at least 1.6
  • an antifoaming agent may be added to the surfactant solution.
  • a pigment may be added to the stabilized suspension.
  • a biocide may be added to the stabilized suspension.
  • a thickening agent and carrier may be added to the concentrated suspension.
  • the surfactant solution, active suspension, stabilized suspension and/or concentrated suspension may be stirred using a high-shear mixer.
  • kits for storing, transporting and dispensing a concentrated suspension as described herein above comprising a container pre-filled with the concentrated suspension and having a length to width ratio of at least 3:1, and a width to height ratio of at least 2:1.
  • the container may be manufactured from a polymer material.
  • the polymer material may be high-density polyethylene (HDPE).
  • HDPE high-density polyethylene
  • the container may have a volume of between 0,5 and 3 litres.
  • a concentrated aqueous suspension for use in agriculture comprising:
  • the concentrated suspension is formulated to have a specific gravity of 1.84. This provides 510g/l of the active ingredient, while retaining product stability over the two-year shelf life of the product and beyond.
  • Manufacture of the concentrated suspension is achieved by adding the ingredients sequentially to an initial aqueous solution (in this example water). The ingredients are added slowly and stirred at each step with a high-shear mixer. The ingredients are added in the following order: first the surfactant product, followed by the dispersants, then the antifoaming agent; then a dry powder of the active ingredient; and then the smectite clay product. Once mixed, this stabilized suspension is then milled while stirring to form a concentrated suspension.
  • the concentrated suspension is then loaded into a tank with a slow speed stirrer. Rinse water is used to flush any remaining amounts of the concentrated suspension into this tank. Finally, the pigment, biocide and a gum premix containing the thickening agent and carrier are mixed in. The final product is then left standing overnight before being re-mixed for between 15 and 60 minutes to recombine any settled ingredients. The product is then ready for packing and shipping.
  • the packaging for the concentrated suspension product is in the form of flexible high-density polyethylene (HDPE) bags having a flattened, elongated shape and anything from 250ml up to 2,5 L capacity.
  • HDPE high-density polyethylene
  • the invention further provides for the ingredients to be varied, without departing from the scope of the invention.
  • the active ingredient, clay, wetting agent, dispersant, thickening agent, carrier and biocide may include the various ingredients mentioned in the summary of invention above.
  • the active ingredient may be a plant nutrient comprising between 60- 70% (w/w) of the concentrated suspension.
  • the plant nutrient may be an inorganic plant nutrient selected from the group consisting of sources of nitrogen, phosphorous, potassium, calcium, sulphur, magnesium, zinc, manganese, iron, copper, molybdenum and boron, in any combination.
  • the active ingredient may be a chemical agent selected from the group comprising a fungicide, herbicide, insecticide, nematicide or bactericide, in any combination.
  • the wetting agent may comprise between 3-10% (w/w) of the concentrated suspension and provided as an ethoxylated polyarylphenol phosphate amine salt.
  • the clay may comprise between 0.45-0.9% (w/w) of the concentrated suspension and includes a phyllosilicate clay such as smectite.
  • the dispersant may comprise between 2-5% (w/w) of the concentrated suspension and selected from the group consisting of water-soluble polymers, acrylic polymers and naphthalene sulphonates, in any combination. These include acrylic polymer sodium salt, poly alkyl naphthalene sulfonate and acrylates copolymer, in any combination.
  • the thickening agent may also be selected from the group consisting of starches, sugar polymers and gelling agents, in any combination and may be provided as between 0.05-0.2% (w/w) of the concentrated suspension.
  • the carrier provided between 20-30% (w/w) of the concentrated suspension may comprise propylene glycol or water.
  • the packaging for the concentrated suspension product may also be varied, and will have a length to width ratio of at least 3:1, and a width to height ratio of at least 2:1.
  • the packaging also forms part of a kit for storing, transporting and dispensing a concentrated suspension as described herein above and any other similar concentrated suspensions.
  • the invention provides significant advantages over known concentrated suspension for agricultural use.
  • the concentrated suspension has a number of advantages over conventional suspension products as known in the art. Firstly, the higher concentration means that less volume needs to be transported, lowering shipping and storage costs. Secondly, the shelf life of the product is improved, both by the formulation of the product and the nature of the packaging. Finally, the concentrated nature of the formulation allows less litres of product to be added per hectare of land.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Agronomy & Crop Science (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention divulgue une suspension aqueuse concentrée destinée à être utilisée en agriculture, la suspension concentrée comprenant un ingrédient actif tel qu'un nutriment végétal ou un agent chimique ; une argile telle qu'une argile du type phyllosilicate ; un agent mouillant tel qu'un sel d'amine de polyarylphénolphosphate éthoxylé ; et un dispersant tel qu'un ou plusieurs éléments quelconques parmi des polymères solubles dans l'eau, des polymères acryliques et des sulfonates de naphtalène. La densité de la suspension est d'au moins 1,6 et présente une charge plus élevée en ingrédients actifs et des caractéristiques de sédimentation améliorées. L'invention s'étend à un procédé de fabrication de la suspension aqueuse concentrée et à un kit de stockage, de transport et de distribution de la suspension concentrée.
PCT/IB2024/061783 2023-11-23 2024-11-25 Suspension concentrée à usage agricole Pending WO2025109562A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2023/10809 2023-11-23
ZA202310809 2023-11-23

Publications (1)

Publication Number Publication Date
WO2025109562A1 true WO2025109562A1 (fr) 2025-05-30

Family

ID=93924708

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2024/061783 Pending WO2025109562A1 (fr) 2023-11-23 2024-11-25 Suspension concentrée à usage agricole

Country Status (1)

Country Link
WO (1) WO2025109562A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110111957A1 (en) * 2008-06-20 2011-05-12 Basf Se Agrochemical Formulations Comprising A Pesticide, An Organic UV-Photoprotective Filter And Coated Metal-Oxide Nanoparticles
EP2545774A1 (fr) * 2011-07-12 2013-01-16 Cheminova A/S Compositions de concentré de suspension comprenant des inhibiteurs de la HPPD et de l'argile smectique
US20170027162A1 (en) * 2015-07-31 2017-02-02 Robert L. Hodge Suspension concentrate
US20190100471A1 (en) * 2017-09-29 2019-04-04 Compass Minerals Usa Inc. High solids suspension fertilizer
WO2023037300A1 (fr) * 2021-09-09 2023-03-16 Hiteshkumar Anilkant Doshi Nouvelle composition pesticide comprenant du soufre élémentaire et de l'acynonapyr
US11684065B2 (en) * 2015-08-21 2023-06-27 Bayer Cropscience Aktiengesellschaft Oil-based suspension concentrates with low gravitational separation and low viscosity

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110111957A1 (en) * 2008-06-20 2011-05-12 Basf Se Agrochemical Formulations Comprising A Pesticide, An Organic UV-Photoprotective Filter And Coated Metal-Oxide Nanoparticles
EP2545774A1 (fr) * 2011-07-12 2013-01-16 Cheminova A/S Compositions de concentré de suspension comprenant des inhibiteurs de la HPPD et de l'argile smectique
US20170027162A1 (en) * 2015-07-31 2017-02-02 Robert L. Hodge Suspension concentrate
US11684065B2 (en) * 2015-08-21 2023-06-27 Bayer Cropscience Aktiengesellschaft Oil-based suspension concentrates with low gravitational separation and low viscosity
US20190100471A1 (en) * 2017-09-29 2019-04-04 Compass Minerals Usa Inc. High solids suspension fertilizer
WO2023037300A1 (fr) * 2021-09-09 2023-03-16 Hiteshkumar Anilkant Doshi Nouvelle composition pesticide comprenant du soufre élémentaire et de l'acynonapyr

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