WO2021012012A1 - Fungicide composition - Google Patents
Fungicide composition Download PDFInfo
- Publication number
- WO2021012012A1 WO2021012012A1 PCT/AU2020/050757 AU2020050757W WO2021012012A1 WO 2021012012 A1 WO2021012012 A1 WO 2021012012A1 AU 2020050757 W AU2020050757 W AU 2020050757W WO 2021012012 A1 WO2021012012 A1 WO 2021012012A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- concentrate
- ethoxylated
- aqueous suspension
- surfactant
- propoxylated
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 79
- 239000000417 fungicide Substances 0.000 title description 7
- 230000000855 fungicidal effect Effects 0.000 title description 6
- 239000004094 surface-active agent Substances 0.000 claims abstract description 69
- 239000004546 suspension concentrate Substances 0.000 claims abstract description 67
- -1 polyoxyethylene moieties Polymers 0.000 claims abstract description 35
- 150000002191 fatty alcohols Chemical class 0.000 claims abstract description 34
- 239000005767 Epoxiconazole Substances 0.000 claims abstract description 32
- 229920000578 graft copolymer Polymers 0.000 claims abstract description 23
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 8
- 229920000193 polymethacrylate Polymers 0.000 claims abstract description 6
- ZMYFCFLJBGAQRS-IAGOWNOFSA-N (2S,3R)-epoxiconazole Chemical compound C1=CC(F)=CC=C1[C@]1(CN2N=CN=C2)[C@@H](C=2C(=CC=CC=2)Cl)O1 ZMYFCFLJBGAQRS-IAGOWNOFSA-N 0.000 claims description 31
- 125000000217 alkyl group Chemical group 0.000 claims description 18
- 239000013543 active substance Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
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- 239000007921 spray Substances 0.000 claims description 10
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- 125000004432 carbon atom Chemical group C* 0.000 claims description 8
- 241000233866 Fungi Species 0.000 claims description 5
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- 238000011282 treatment Methods 0.000 description 23
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- 241001533598 Septoria Species 0.000 description 12
- 229920001451 polypropylene glycol Polymers 0.000 description 12
- 238000002156 mixing Methods 0.000 description 11
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 9
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 9
- 239000013078 crystal Substances 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
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- 239000004480 active ingredient Substances 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
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- 239000000230 xanthan gum Substances 0.000 description 3
- 229920001285 xanthan gum Polymers 0.000 description 3
- 229940082509 xanthan gum Drugs 0.000 description 3
- 235000010493 xanthan gum Nutrition 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 241000221785 Erysiphales Species 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
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- ZMYFCFLJBGAQRS-UHFFFAOYSA-N 1-{[3-(2-chlorophenyl)-2-(4-fluorophenyl)oxiran-2-yl]methyl}-1H-1,2,4-triazole Chemical compound C1=CC(F)=CC=C1C1(CN2N=CN=C2)C(C=2C(=CC=CC=2)Cl)O1 ZMYFCFLJBGAQRS-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 108010053481 Antifreeze Proteins Proteins 0.000 description 1
- RUPBZQFQVRMKDG-UHFFFAOYSA-M Didecyldimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCC[N+](C)(C)CCCCCCCCCC RUPBZQFQVRMKDG-UHFFFAOYSA-M 0.000 description 1
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
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- 206010053615 Thermal burn Diseases 0.000 description 1
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- 241000607479 Yersinia pestis Species 0.000 description 1
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- 235000021015 bananas Nutrition 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
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- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 1
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- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
-
- 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
- A01N25/30—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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P3/00—Fungicides
Definitions
- This invention relates to aqueous suspension concentrate formulations of the fungicide epoxiconazole.
- the invention relates to highly loaded suspension concentrate formulations that comprise epoxiconazole.
- Epoxiconazole has the lUPAC designation (2RS,3SR)-1 -[3-(2- chlorophenyl)-2,3-epoxy-2-(4-fluorophenyl)propyl]-1 FI-1 ,2,4-triazole). It is a triazole fungicide that inhibits the metabolism of fungi that infest crop plants.
- SC Suspension concentrate
- This loading of 125 g/L epoxiconazole in a SC formulation is significantly less than the loading of other commercially available triazole fungicides.
- the fungicide flutriafole is widely commercially available as a suspension concentrate comprising about 500g/L of active agent.
- the adverse effects of Ostwald ripening may be ameliorated by using formulation adjuvants that act as crystal habit modifiers (and impede the formation of long crystals).
- formulation adjuvants that act as crystal habit modifiers (and impede the formation of long crystals).
- the ability to provide crystal habit modification of an active agent and the required nature of the crystal habit modifier for a particular active may be critically dependent on fine details of crystal morphology and crystal growth kinetics, and these events are notoriously difficult to predict from active agent structure.
- an aqueous suspension-concentrate (SC) composition comprising at least 400g/L, preferably at least 450 g/L, of a epoxiconazole; comb-graft copolymer surfactant having a poly-(meth)acrylate backbone and pendant polyoxyethylene moieties attached to the backbone; and a surfactant selected from the group consisting of ethoxylated and propoxylated fatty alcohols
- the aqueous suspension-concentrate may optionally further comprise one or more additional surfactants.
- a preferred additional surfactant is an ethoxylated and propoxylated lower alkanol.
- the lower alkanol is distinct from fatty alcohol which typically comprises a Cio to C24 carbon atom chain.
- the preferred lower-alkanols are Ci to C6 lower alkanols and particularly butanol (C4).
- Another surfactant which may optionally be present instead ethoxylated and propoxylated lower alkanol of, or in addition thereto, is a surfactant comprising a fatty alkyl chain and polyethoxylate group. Examples of such surfactants may be selected from the group consisting of fatty alcohol ethoxylates, fatty acid ethoxylates, fatty amine ethoxylates and fatty amide ethoxylates.
- (meth)acrylate is a general term for acrylic acid and methacrylic acid and their esters such as methyl esters and may be either one or more of them.
- tank mix and tank mixing refer to the mix formed and method involved in mixing of components such as adjuvants, particularly surfactants for use as wetters, in the tank at the time of preparing a diluted mixture of the epoxiconazole suspension concentrate composition for spray application.
- the surfactant component including the comb-graft copolymer surfactant and ethoxylated and propoxylated fatty alcohol provide an effective crystal habit modifier for the
- the aqueous suspension-concentrate (SC) composition comprises
- surfactant selected from the group consisting of comb-graft copolymer having a poly(meth)acrylate backbone and pendant polyoxyethylene moieties attached to the backbone; surfactant selected from the group consisting of an ethoxylated and propoxylated fatty alcohol and optionally one or more surfactants selected from the group consisting of:
- surfactant selected from the group consisting of ethoxylated and propoxylated fatty alcohols.
- an ethoxylated and propoxylated lower alcohol particularly ethoxylated and propoxylated butyl alkanol.
- the invention relates to suspension-concentrates of epoxiconazole which has the lUPAC chemical name (2RS,3SR)-1 -[3-(2-chlorophenyl)-2,3-epoxy-2-(4- fluorophenyl)propyl]-1 H- 1 ,2,4-triazole.
- the amount of the epoxiconazole is at least 400 g/L, preferably at least 450 g/L, such as at least 480g/L or at least 500 g/L.
- the loading of epoxiconazole is no more than 650 g/L, such as no more than 600 g/L or no more than 550 g/L.
- One example of such copolymer is the Atlox® 4913 which contains approximately one third of the polymethyl methacrylate-polyethylene oxide graft copolymer, one third water and one third propylene glycol.
- the graft copolymer contains about 36.6% methyl methacrylate, 1.9% methacrvlic acid, both grafted with methoxypoly(ethylene glycol) 750 methacrylate (61.5%).
- Tersperse® 2500 which comprises about 35 wt% of the relevant comb- graft copolymer.
- the comb-graft copolymer is typically present in the suspension- concentrate composition in an amount of at least 3 g/L, such as at least 5 g/L or at least 10 g/L.
- the comb-graft copolymer is typically present in an amount of no more than 50 g/L such as no more than 45 g/L. Accordingly in some embodiments the comb-graft copolymer is present in an amount of 3 g/L to 50 g/L, 5 g/L to 40 g/L or 5 g/L to 30 g/L.
- the amount of comb-graft copolymer surfactant in the suspension-concentrate is 3 g/L to 32 g/L (corresponding to 10-90 g/L of a 35% solution of the surfactant in a carrier solution).
- the concentration of comb-graft copolymer surfactant in the suspension-concentrate may be 7g/L to 14 g/L
- the concentration of comb-graft copolymer surfactant in the suspension-concentrate is about 10 g/L (corresponding to 30 g/L of a 35% solution of the surfactant in a carrier solution).
- the suspension-concentrate composition comprises an ethoxylated and propoxylated fatty alcohol.
- the fatty alcohol are ethoxylated as well as meing propoxylated.
- the ethoxylated and propoxylated fatty alcohol contain a polymer containing ethyleneoxy (EO) and propyleneoxy (PO) monomer units and a fatty alcohol forming an ether with the EO-PO copolymer.
- the fatty alcohol portion of the surfactant is typically a fatty aliphatic alcohol which may be straight or branched chain aliphatic group.
- the aliphatic group, typically alky generally contains 10 to 24 carbon atoms, preferably from 12 to 20 carbon atoms, particularly 14 to 18 carbon atoms such as 16 to 18 carbon atoms.
- Such surfactants may be of formula I.
- suitable ethoxylated and propoxylated fatty alcohol include Antarox ® 65A9P which is believed to be an ethoxylated and propoxylated cetyl (C16) alcohol available as 100% liquid.
- the amount of ethoxylated and propoxylated fatty alcohol may be at least 1 g/L such as at least 2 g/L or at least 3 g/L.
- the amount of ethoxylated and propoxylated fatty alcohol may be at least 1 g/L such as at least 2 g/L or at least 3 g/L.
- propoxylated fatty alcohol is typically no more than 50 g/L such as no more than 30 g/L or no more than 20 g/L.
- the amount of ethoxylated and propoxylated fatty alcohol in the suspension-concentrate is in the range 1 g/L to 20 g/L, preferably in the range 2g/L to10 g/L, more preferably in the range 3g/L to 6 g/L.
- the ratio of ethylene oxide to propylene oxide derived units in the ethoxylated and propoxylated fatty alcohol will, together with the chain length of the fatty group, control the water miscibility and hydrophilic-lipophilic balance of the surfactant.
- the ratio of EO to PO moieties in the ethoxylated and propoxylated fatty alcohol may be in the range 2:50 to 50:2, preferably in the range 10:50 to 50:10, more preferably in the range 20:50 to 50:20.
- the suspension-concentrate comprises a surfactant component comprising both comb graft copolymer surfactant and ethoxylated and propoxylated fatty alcohol surfactant.
- the ratio of comb-graft copolymer surfactant (net of carrier solvent) to ethoxylated and propoxylated fatty alcohol surfactant in the suspension-concentrate is in the range 30:1 to 0.8:1 , preferably in the range 10:1 to 1 :1 , more preferably in the range 5:1 to 5:3.
- the suspension-concentrate composition may, and preferably will, comprise an ethoxylated and propoxylated lower alkanol.
- the lower alkanol is generally a Ci to C6 alcohol and in particular butyl alcohol (C4).
- the ethoxylated and propoxylated lower alkanol may have formula I where R is lower alkyl, particularly butyl.
- the amount of the ethoxylated and propoxylated lower alkanol surfactant may be up to 90 g/L such as 2 g/K to 80 g/L or 10 g/L to 70 g/L.
- the amount of ethoxylated and propoxylated lower alkanol surfactant in the suspension-concentrate is in the range 20g/L to 90 g/L, preferably in the range 40g/L to 70 g/L, more preferably in the range 45g/L to 60 g/L, even more preferably about 50 g/L.
- An example of a commercially useful surfactant composition is the product Tersperse ® 4894 which comprises a blend of 80 wt% ethoxylated and propoxylated lower alkanol and about 20 wt% ethoxylated fatty alcohol based on the weight of the surfactant components.
- Tersperse ® 4894 which comprises a blend of 80 wt% ethoxylated and propoxylated lower alkanol and about 20 wt% ethoxylated fatty alcohol based on the weight of the surfactant components.
- the product contributes to both of the optional surfactant types.
- ethoxylated and propoxylated lower alkanol surfactant is in the range 2:50 to 50:2, preferably in the range 10:50 to 50:10, more preferably in the range 10:50 to 50:10 and still more preferably in the range 20:50 to 50:20.
- surfactant comprising a fatty alkyl chain and ethoxylate group.
- surfactants may be selected from the group consisting of fatty alcohol ethoxylates, fatty acid ethoxylates, fatty amine ethoxylates and fatty amide alkoxylates.
- a range of such surfactants will be known to those skilled in the art and are readily available from commercial sources.
- One such group of surfactants are of formula II.
- the amount of these additional surfactants having a fatty alkyl chain and polyethoxylate group may be up to 100 g/L but is typically no more than 65 g/L such as 2 g/L to 100 g/L or 5 g/L to 65 g/L, such as 10 g/L to 65 g/L, of suspension- concentrate composition.
- the suspension-concentrate contains an amount of surfactant having a fatty alkyl chain and polyethoxylate group in the range of 8 g/L to 30g/L, preferably in the range 10 g/L to 13 g/L.
- the surfactant having a fatty alkyl chain and polyethoxylate group typically comprises a fatty alkyl (such as R in the formula R(OC2H4)nOH ) which is a C10-C20 fatty alkyl moiety, preferably a C12-C18 alkyl moiety, more preferably a C12-C16 alkyl moiety.
- a fatty alkyl such as R in the formula R(OC2H4)nOH
- the number of (ethyleneoxy) EO groups (OC2H4) in the surfactant having a fatty alkyl chain and ethoxylate group may, for example, be in the range 1 -50, preferably in the range 4-30, such as in the range 6-20, or in the range 7-14.
- the ratio of ethoxylated and propoxylated lower alkanol to surfactant having a fatty alkyl chain and polyethoxylate group is in the range 15:1 to 1 :1 , preferably in the range 10:1 to 10:4, more preferably about 10:2.
- the combined weight of ethoxylated and propoxylated lower alkanol plus fatty-alcohol ethoxylate in the composition is in the range 20 g/L 100 g/L, preferably in the range 50g/L to 70 g/L, more preferably about 65 g/L.
- composition of the invention may comprise an anti-freeze agent such as glycerol and the concentration of anti-freeze agent in the suspension-concentrate is typically up to 150 g/L such as in the range 30g/L to 150 g/L, preferably in the range 60-100 g/L, more preferably about 80 g/L.
- an anti-freeze agent such as glycerol
- concentration of anti-freeze agent in the suspension-concentrate is typically up to 150 g/L such as in the range 30g/L to 150 g/L, preferably in the range 60-100 g/L, more preferably about 80 g/L.
- the rheology modifying agent may be a carbohydrate polymer, preferably a polysaccharide gum, such as xanthan gum, and may be present in an amount of 0.3 g/L to 2 g/L, preferably 0.6 g/L to 1 g/L such as about 0.8g/L.
- the xanthan gum may be derived from arrange of sources such as derived from Xanthomonas campestris.
- the invention also provides the use of a composition as defined in any of claims 1 to 5 for protecting plants or the loci thereof against fungi.
- the invention further provides a method of protecting plants or the site of plants from fungi, comprising spray application of the suspension-concentrate composition to the plants or the site of plants optionally following dilution of the suspension concentrate.
- the diluted composition is tank mixed with a spray tank adjuvant that provides spreading, absorption, penetration and/or retention of the active agent.
- a suitable tank mix is a liquid alcohol alkoxylate non-ionic surfactant surfactant available under the trade name WETSPRAY, a liquid alcohol alkoxylate surfactant provided at a concentration of 1000g/L by ADAMA, Australia.
- control of fungi may for example be leaf rust, stripe rust, septoria nodorum blotch and powdery mildew of wheat, leaf rust, net form of net blotch, leaf scald and powdery mildew of barley and leaf spot and leaf speckle in bananas.
- the composition may also be used in seed treatment.
- composition is, for example, useful in protecting plants against leaf blotch ( Septoria tritici) and rust ( Puccinia triticina).
- Example 1 SC composition according to the invention: Epoxiconazole 500 g/L.
- a composition of the invention containing 500g/L epoxiconazole SC (designated as COMPOSITION 1 ) was prepared by combining the components shown in Table 2 in accordance with the procedure of Example 2.
- Tersperse 4894 comprises about 20% C12-C16 ethoxylate and 80% butyl EO-PO copolymer.
- a typical manufacturing batch size would be 1 ,000L.
- Step 1 To prepare the mill base blend (which will later be fed to the mill) fill a 1 ,000L stainless steel mixing vessel with approximately 80% of the water required. Mix with the Silverson® high shear batch mixer to form a vortex and gradually add Veegum® Ultra, Rhodoline® DF691 , TERSPERSE® 4894, Atlox® 4913, Antarox® 65A9P, Acticide® BW20 and 50% of required glycerol (leaving a sufficient amount for the dispersion of Kelzan® AP). Mix until homogeneous or for another 15 minutes, whichever is longer.
- Step 2 Gradually add epoxiconazole technical material to the 1 ,000L vessel whilst constantly mixing. Continue mixing until the technical is uniformly dispersed or for another 15 minutes, whichever is longer.
- the milled intermediate is de-aerated if required, as it is very difficult to remove air bubbles once the thickener is added in later steps. Deaeration can be achieved by letting it sit or with gentle stirring to encourage the air bubbles to come to the top. If necessary, the stirring can take place in a hot box and the stirring can take place under partial vacuum.
- Step 4 Gradually add the remaining glycerol into the 70L stainless steel vessel. Add the Kelzan® AP and disperse using a paddle mixer (the Dispermat® was used in the pilot plant).
- Step 5 Gradually add the Kelzan® AP dispersion to the 1 , 200-1 , 500L vessel whilst mixing and continue mixing until homogeneous or for another 30 minutes, whichever is longer.
- the trial was established as a randomised complete block design with four replicates. Plot size was 10 metres x 2 metres.
- the target pest species was Septoria (Mycosphaerella graminicola). The Septoria population was established prior to the first application with low to moderate levels of severity present.
- COMPOSITION 1 applied alone reduced the severity of Septoria at 14 DAA, with only COMPOSITION 1 + WETSPRAY providing significant reduction in severity by the conclusion of the trial at 42 DAA.
- WETSPRAY was a liquid alcohol alkoxylate surfactant provided at a concentration of 1000g/L by ADAMA, Australia.
- Table 14 shows the Mean Severity (% leaf damage) of Septoria per tr
- COMPOSITION 1 applied alone or with WETSPRAY provided equivalent or better control to OPUS in terms of severity of Septoria throughout the trial.
- Treatments were applied using a motorised hand-held boom incorporating two Turbo Twinjet Flat Fan nozzles per metre. At an application speed of 2.0 m/s and a pressure of 200 kPa, treatments were applied in a total volume of 104 L/ha and a coarse quality. The treatments were applied once, at BBCFI-14/16.
- the target disease was stripe rust ( Puccinia striiformis). The site was selected for an expected high disease pressure, and at the pre-spray assessment, 36% of Y-1 , 68% of Y-2 and 28% of Y-3 tillers were affected. [0101] Detailed assessments were conducted at pre-spray, 19 and 30 days after treatment (DAT) and at harvest. These included crop safety, disease incidence and severity, final crop yield and grain quality.
- DAT days after treatment
- COMPOSITION 1 provided very high control of stripe rust in wheat at all application rates when applied with WETSPRAY 1000, or alone.
- WETSPRAY was a liquid alcohol alkoxylate surfactant provided at a concentration of 1000 g/L by ADAMA Australia.
- COMPOSITION 1 provided equivalent control of stripe rust compared to OPUS 125.
- Example 5 (Comparative Example) Formulation of Epoxyconazole using the method of Australian Patent Application AU 201610158
- Preparation Method - Standard practice for manufacture of a suspension concentrate involves charging all the active ingredient required for a batch of mill base all at once.
- Surfactants, rheology modifier, antifoam, biocide and partial quantity of anti-freeze are dissolved/dispersed into water (typically 80% required). Active ingredient
- epoxiconazole is charged to vessel with agitation. This blend is milled to appropriate particle size by passing through the mill.
- the final step is the thickening step where a xanthan gum - antifreeze dispersion is blended into the milled base with top up of water.
- the typical mill used for reduction of particle size is a bead mill e.g. Dyno- m ill.
- the mixer used is a standard paddle type mixer.
- the sample prepared using the standard method of preparation was not of a milling consistency.
- the sample was a thick paste. Additional water was added (to 90% water required) and the product significantly reduced in viscosity.
- the mill base quickly settles, and the rheology was dilatant (shear thickening) which is not a pumpable viscosity.
- the mill base should be of a pumpable viscosity and rheology to be introduced into the mill.
Abstract
Description
Claims
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EP20842681.7A EP4003011A4 (en) | 2019-07-24 | 2020-07-24 | Fungicide composition |
AU2020317060A AU2020317060B2 (en) | 2019-07-24 | 2020-07-24 | Fungicide composition |
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WO2023023813A1 (en) * | 2021-08-25 | 2023-03-02 | Adama Australia Pty Limited | Improvement to suspension concentrate formulations |
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AU2016101508A4 (en) * | 2015-08-28 | 2016-09-29 | Eureka! Agresearch Pty Ltd | Fungicide composition and method |
-
2020
- 2020-07-24 EP EP20842681.7A patent/EP4003011A4/en active Pending
- 2020-07-24 AU AU2020317060A patent/AU2020317060B2/en active Active
- 2020-07-24 WO PCT/AU2020/050757 patent/WO2021012012A1/en active Application Filing
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WANG XU, LI LIANWEI, HE WEIDONG, WU CHI: "Formation of Hyperbranched Amphiphilic Terpolymers and Unimolecular Micelles in One-Pot Copolymerization", MACROMOLECULES, AMERICAN CHEMICAL SOCIETY, WASHINGTON DC UNITED STATES, vol. 48, no. 19, 13 October 2015 (2015-10-13), Washington DC United States, pages 7327 - 7334, XP055784541, ISSN: 0024-9297, DOI: 10.1021/acs.macromol.5b01637 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2023023813A1 (en) * | 2021-08-25 | 2023-03-02 | Adama Australia Pty Limited | Improvement to suspension concentrate formulations |
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AU2020317060B2 (en) | 2021-10-07 |
EP4003011A1 (en) | 2022-06-01 |
EP4003011A4 (en) | 2023-08-30 |
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