WO2012052545A2 - Agrochemical concentrates comprising alkoxylated adjuvants - Google Patents
Agrochemical concentrates comprising alkoxylated adjuvants Download PDFInfo
- Publication number
- WO2012052545A2 WO2012052545A2 PCT/EP2011/068435 EP2011068435W WO2012052545A2 WO 2012052545 A2 WO2012052545 A2 WO 2012052545A2 EP 2011068435 W EP2011068435 W EP 2011068435W WO 2012052545 A2 WO2012052545 A2 WO 2012052545A2
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- WIPO (PCT)
- Prior art keywords
- adjuvant
- concentrate
- aliphatic
- alkoxylated
- aqueous agrochemical
- Prior art date
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Classifications
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- 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
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- 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
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- 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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
Definitions
- the present invention relates to aqueous agrochemical concentrates, as well as methods of making and using the aqueous agrochemical concentrates.
- Bioactive agrochemicals are usually sold as concentrated formulations and prior to use they are diluted with water and subsequently applied to plants, e.g. by spraying.
- Such formulations may include ingredients in addition to the agrochemical active ingredient to improve the product, e.g. to assist with dispersion of the active in water, to improve plant up-take of the active, to improve the bioactivity of the active, or to improve shelf-life etc..
- SL soluble concentrates
- EC emulsifiable concentrates
- SC suspension concentrates
- EW oil-in-water emulsions
- WP water-dispersible powders
- WG water-dispersible granules
- SE suspoemulsions
- Adjuvants can vary in complexity from simple surfactants to multi-component blended oils.
- Some adjuvants such as alcohol ethoxylates, display liquid crystalline behaviour at high concentrations in water (WO
- the liquid crystalline phases can be cubic, hexagonal or lamellar phases, with different phases forming at different concentrations and different temperatures.
- the cubic and hexagonal phases are highly viscous, the lamellar phase is less viscous but we have found that this is still viscous enough to give problems with pourability, rinsability from the container and/or dilution into water for spray application.
- WO 2005/013692 describes use of hydrotropes to address the problem of adjuvants exhibiting liquid crystalline behaviour.
- Hydrotropes are generally considered to be molecules that solubilise hydrophobic compounds in water. Typically, hydrotropes are amphiphiles and consist of a hydrophilic part and a small hydrophobic part. Addition of hydrotropes can disrupt the liquid crystalline phases but use of many hydrotropes often results in a solution that is still highly viscous.
- WO 2005/048707 describes the use of particular water soluble solvent to act as anti-gel forming and anti-caking agent for aqueous suspension concentrate compositions comprising polyoxyalkylene alkyl ethers.
- the anticaking agents are described as glycol based aqueous solvents such as ethylene glycol, diethylene glycol, dipropylene glycol and propylene glycol, with dipropylene glycol being preferred.
- glycol based aqueous solvents such as ethylene glycol, diethylene glycol, dipropylene glycol and propylene glycol, with dipropylene glycol being preferred.
- dipropylene glycol being preferred.
- agrochemical concentrates comprising adjuvants that exhibit liquid crystalline behaviour in water it can be important to reduce the viscosity of the agrochemical concentrate in order to provide good pourability, good rinsability from the container and/or for ease of dilution into water for spray application.
- the invention provides a method of reducing the viscosity of an aqueous agrochemical concentrate comprising a) an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine, wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l; the method comprising including, e.g. adding, b) a compound selected from:
- iii an aliphatic polyol comprising at least four contiguous carbon atoms; and iv. an aryl alcohol;
- aqueous agrochemical concentrate comprises an agrochemical active ingredient.
- the aryl sulphonate, aliphatic mono alcohol, aliphatic polyol or aryl alcohol may be considered as viscosity reducing agents, e.g. they may disrupt liquid crystalline phases of the adjuvant, thereby reducing the viscosity of the concentrate.
- viscosity reducing agents are capable of maintaining the adjuvant in the liquid phase in water, e.g. the viscosity reducing agent is capable of preventing the adjuvant from adopting liquid crystalline phases when mixed with water.
- the liquid crystalline phases may be considered to be gel phases.
- the presence of the viscosity reducing agent will maintain the adjuvant in the liquid phase whereas in the absence of the viscosity reducing agent the adjuvant will be a gel, e.g. liquid crystalline gel.
- the aryl sulphonate, aliphatic mono alcohol, aliphatic polyol or aryl alcohol are highly effective at reducing the viscosity of the liquid phase.
- the invention provides a method of reducing the viscosity of an aqueous agrochemical concentrate comprising an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine comprising including an aryl sulphonate in the aqueous agrochemical concentrate, wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l, and wherein the aqueous agrochemical concentrate comprises an agrochemical active ingredient.
- an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine comprising including an aryl sulphonate in the aqueous agrochemical concentrate, wherein the concentration of adjuvant in the aqueous agro
- the invention provides a method of reducing the viscosity of an aqueous agrochemical concentrate comprising an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine comprising including an aliphatic mono alcohol in the aqueous agrochemical concentrate, wherein the concentration of adjuvant in the aqueous
- agrochemical concentrate is at least 50 g/l, and wherein the aqueous agrochemical concentrate comprises an agrochemical active ingredient.
- the invention provides a method of reducing the viscosity of an aqueous agrochemical concentrate comprising an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine comprising including an aliphatic polyol comprising at least four contiguous carbon atoms in the aqueous agrochemical concentrate, wherein the adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine comprising including an aliphatic polyol comprising at least four contiguous carbon atoms in the aqueous agrochemical concentrate, wherein the adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and
- the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l and and wherein the aqueous agrochemical concentrate comprises an agrochemical active ingredient.
- the invention provides a method of reducing the viscosity of an aqueous agrochemical concentrate comprising an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine including an aryl alcohol in the aqueous agrochemical concentrate, wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l, and wherein the aqueous agrochemical concentrate comprises an agrochemical active ingredient.
- the invention provides an aqueous agrochemical concentrate comprising a) an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine; wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l;
- iii an aliphatic polyol comprising at least four contiguous carbon atoms; and c) an agrochemical active ingredient.
- the invention provides an aqueous agrochemical concentrate comprising
- an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine; wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l;
- the invention provides an aqueous agrochemical concentrate comprising
- an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine; wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l;
- the invention provides an aqueous agrochemical concentrate comprising
- an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine; wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l.
- the adjuvant may be present in the aqueous agrochemical concentrate at at least 100g/l, at least 180g/l, or at least 230g/l.
- the adjuvant may be - 50 - 800 g/l of the aqueous agrochemical concentrate, e.g. 100 - 500 g/l, e.g. 150 - 400 g/l.
- the adjuvant may be present in the aqueous agrochemical concentrate at a concentration such that it exhibits liquid crystalline behaviour in the absence of the viscosity reducing agent, e.g. at 5°C.
- the adjuvant may be an alkoxylated aliphatic acid, alkoxylated aliphatic alcohol, alkoxylated aliphatic amide or alkoxylated aliphatic amine, which aliphatic acid, aliphatic alcohol, aliphatic amide or aliphatic amine has a C 8 -C 2 o alkyl or C 8 -C 2 o alkenyl group.
- the adjuvant may have the formula I:
- Z is O, NH, or N(-[-R 2 0-] q -R 3 ) providing that Z is O or N H when p is 1 ;
- R 1 is C 8 -C 2 o alkyl or C 8 -C 2 o alkenyl
- each R 2 is independently C 2 -C 4 alkyl
- R 3 is hydrogen or C C 8 alkyl; p is 0 or 1 ; and
- q 2 to 40.
- Z is O.
- R 3 is C C 8 alkyl, more preferably butyl.
- a "capped adjuvant" is one where R 3 is not H.
- the adjuvant is one wherein: Z is O, R 1 is C 8 -C 20 alkyl or C 8 -C 20 alkenyl; R 2 is ethyl; R 3 is C C 8 alkyl; p is 0; and q is 2 to 40.
- the adjuvant is one wherein: Z is O, R is C i 6"C 2 o alkyl or Ci 6 -C 20 alkenyl; R 2 is ethyl; R 3 is butyl; p is 0; and q is 5 to 30.
- the adjuvant in the aqueous agrochemical concentrate will be a blend of the molecules, e.g. in which Z, R 1 , R 2 , R 3 , q and p may have different values.
- at least 50, 60, 70, 80, 90, or even 100% of the adjuvant molecules in the concentrate may be molecules according to formula I.
- At least 50, 60, 70, 80, 90, or even 100% of the adjuvant molecules may be molecules in which R 3 is C C 8 alkyl.
- R 3 is C C 8 alkyl.
- the average value of q is 10 to 25, more preferably 18 to 22, even more preferably about 20.
- the term "average" refers to the mode average.
- At least 50, 60, 70, 80, 90, or even 100% of the adjuvant molecules in the concentrate may be molecules in which: Z is O, R 1 is Ci 6 -C 2 o alkyl or Ci 6 - C 2 o alkenyl; R 2 is ethyl; R 3 is butyl; p is 0; and q is an average of 18-22
- Adjuvants of the present invention may be prepared by conventional techniques, e.g. as described in WO 03/022048.
- the viscosity reducing agent is an aryl sulphonate.
- the aryl sulphonate may be a compound of formula II: wherein A is phenyl optionally substituted by one or more groups independently selected from C C 8 alkyl, C C 8 haloalkyl, hydroxy and halogen.
- A is phenyl optionally substituted by one to three groups independently selected from C C 8 alkyl, C C 8 haloalkyl, hydroxy and halogen. More preferably, A is phenyl optionally substituted by one to three C C 8 alkyl, more preferably optionally substituted by one or two C C 4 alkyl.
- aryl sulphonates for use as viscosity reducing agents are toluene sulphonate, xylene sulphonate and cumene sulphonate: -
- cumene sulphonate e.g. ammonium cumene sulphonate.
- the viscosity reducing agent is an aliphatic mono alcohol, i.e. a compound containing one hydroxy group.
- the aliphatic mono alcohol may be a compound of formula III: R 4 -OH (III) wherein R 4 is C 4 -C 16 alkyi optionally substituted by C 3 -C 8 cycloalkyi, or C 3 -C 8 cycloalkyi optionally substituted by C C 8 alkyi.
- R 4 is C 4 -C 16 alkyi or C 3 -C 6 cycloalkyi, even more preferably C 4 -Ci 2 alkyi or C 5 -C 6 cycloalkyi, most preferably C 4 -C 8 alkyi or
- cyclohexanol examples of particular aliphatic mono alcohols for use as viscosity reducing agents are n-hexanol, 2-ethyl hexanol, n-butanol, cyclohexanol, and n-octanol.
- the aliphatic mono alcohol is a compound of formula III in which R 4 is propyl, preferably isopropyl.
- the viscosity reducing agent is an aliphatic polyol, i.e. an alcohol containing more than one hydroxy group.
- the aliphatic polyol may be an aliphatic diol of the formula IV
- R 5 is C 4 -C 16 alkyi or C 3 -C 6 cycloalkyi, even more preferably C 4 -C 12 alkyi or C 5 -C 6 cycloalkyi, most preferably C 4 -C 8 alkyi or cyclohexanol, likewise in each case substituted by one additional hydroxy.
- Examples of particular aliphatic diols for use as viscosity reducing agents are 2-ethyl 1 ,3 hexanediol, 1 ,2 pentanediol and 2-methyl 2,4 pentanediol (also known as hexylene glycol).
- the viscosity reducing agent is an aryl alcohol.
- the aryl alcohol may be a compound of formula V
- B is phenyl optionally substituted by at least carboxyl or sulphonyl, more preferably carboxyl.
- the viscosity reducing agent is salicylate.
- the viscosity reducing agent may be provided in salt form or unprotonated form. Suitable salts will be apparent to the person skilled in the art, e.g. alkali metal salts, e.g. sodium and potassium salts, and ammonium salts.
- the viscosity reducing agent could also be added to the formulation in the acidic form, forming the salt in-situ e.g. with a basic surfactant or a basic active ingredient.
- the term "optionally substituted” as used herein means substituted or not substituted.
- AlkyI and alkenyl groups as defined herein may be straight chains or branched chains.
- the aqueous agrochemical concentrate is preferably a suspension concentrate (SC) formulation, e.g. an aqueous suspension of finely divided insoluble solid particles of the agrochemical active ingredient.
- SC formulations may be prepared by ball or bead milling a solid agrochemical active ingredient in a suitable medium to produce a fine particle suspension of the agrochemical active ingredient.
- the particle size is typically from 0.2-15 microns, for example from 0.5 to 5 microns median diameter.
- the agrochemical active ingredient may be combined with other formulation ingredients and added to water, or it may be added to water already containing other formulation ingredients.
- the order of addition of ingredients to the aqueous agrochemical concentrate is generally not critical, although it is preferable to add the viscosity reducing agent into the aqueous phase (optionally containing the active ingredient) before the addition of the adjuvant in order to speed up dissolution of the adjuvant.
- the agrochemical composition may contain other ingredients found in commercial agrochemical concentrate formulations, e.g. surfactants, dispersants, polymers, wetting agents, other adjuvants stabilizers, pH modifiers, anti-freeze agents, suspending agents, emulsifiers, antifoam agents, pH stabilising agents, preservatives and the like.
- surfactants e.g. surfactants, dispersants, polymers, wetting agents, other adjuvants stabilizers, pH modifiers, anti-freeze agents, suspending agents, emulsifiers, antifoam agents, pH stabilising agents, preservatives and the like.
- the agrochemical active ingredient may be any agrochemical active ingredient, including pesticides, plant growth regulators, safeners, etc.
- a pesticide is for example a herbicide, fungicide or insecticide.
- herbicides suitable for formulation as a concentrate there may be mentioned mesotrione, fomesafen, tralkoxydim, napropamide, amitraz, propanil, pyrimethanil, dicloran, tecnazene, toclofos methyl, flamprop M, 2,4-D, MCPA, mecoprop, clodinafop, clodinafop-propargyl, cyhalofop-butyl, diclofop methyl, haloxyfop, quizalofop-P, indol-3-ylacetic acid, 1-naphthylacetic acid, isoxaben, tebutam, chlorthal dimethyl, benomyl, benfuresate, dicamba,
- fungicides suitable for formulation as a concentrate in addition to those mentioned elsewhere, there may be mentioned azoxystrobin, trifloxystrobin, kresoxim methyl, famoxadone, metominostrobin and picoxystrobin, cyprodanil, carbendazim, thiabendazole, dimethomorph, vinclozolin, iprodione, dithiocarbamate, imazalil, prochloraz, fluquinconazole, epoxiconazole, flutriafol, azaconazole, bitertanol,
- bromuconazole bromuconazole, cyproconazole, difenoconazole, hexaconazole, paclobutrazole, propiconazole, tebuconazole, triadimefon, triticonazole, fenpropimorph, tridemorph, fenpropidin, mancozeb, metiram, chlorothalonil, thiram, ziram, captafol, captan, folpet, fluazinam, flutolanil, carboxin, metalaxyl, bupirimate, ethirimol, dimoxystrobin,
- insecticides suitable for formulation as a concentrate there may be mentioned thiamethoxam, imidacloprid, acetamiprid, clothianidin, dinotefuran, nitenpyram, fipronil, abamectin, emamectin, bendiocarb, carbaryl, fenoxycarb, isoprocarb, pirimicarb, propoxur, xylylcarb, asulam, chlorpropham, endosulfan, heptachlor, tebufenozide, bensultap, diethofencarb, pirimiphos methyl, aldicarb, methyl, cyprmethrin, bioallethrin, deltamethrin, lambda cyhalothrin, cyhalothrin, cyfluthrin, fenvalerate, imiprothrin, permethrin, halfenprox and teflu
- the agrochemical active ingredient is fungicide from the class of succinate dehydrogenase inhibitors (SDHI).
- SDHI succinate dehydrogenase inhibitors
- the class of fungicides known as succinate dehydrogenase inhibitors is an art-recognised class with a mode of action that targets the enzyme succinate dehydrogenase (SDH, so-called complex II in the mitochondrial respiration chain), which is a functional part of the tricarboxylic cycle and linked to the mitochondrial electron transport chain.
- SDH succinate dehydrogenase
- SDHI fungicides have been grouped under FRAC (Fungicide Resistance Action Committee) code number 7. See www.frac.info.
- the SDHI class of fungicides includes phenyl benzamides, e.g. benodanil, flutolanil and mepronil; pyridinyl-ethyl-benzamides, e.g. fluopyram, furan-carboxamides, e.g. fenfuram, oxathin-carboxamides, e.g. carobxin oxycarboxin; thiazole-carboxamides, e.g. thifluzamide; pyrazole carboxamides, e.g. bixafen, furametpyr, isopyrazem, penflufen, penthiopyrad and sedaxane; and pyridine carboxamides, e.g. boscalid.
- SDHI fungicide is a compound of formula VII
- R 2 is CF 3 , CF 2 H or CFH 2 ,
- A is thienyl, phenyl, or ethylene each optionally substituted by one to three groups independently selected from halogen, methyl and methoxy,
- B is a direct bond, cyclopropylene, an annelated bicyclo[2.2.1]heptane- or
- D is hydrogen, halogen, C C 6 alkyl, C C 6 haloalkyl, C C 6 alkoxy, C C 6 haloalkoxy, C 3 -C 6 cycloalkyi, C C 6 alkylidene, C C 6 haloalkylidene, phenyl or phenyl optionally substituted by one to three substituents independently selected from halogen and trihalomethylthio.
- the compound of formula VII is preferably a compound of formula VIII (Isopyrazam), a compound of formula IX (Sedaxane), a compound of formula X, a compound of formula XI (Penthiopyrad), a compound of formula XII (Bixafen), a compound of formula XIII
- Isopyrazam, Sedaxane, Penthiopyrad, Fluxapyroxad and Bixafen are known fungicides.
- the compound of formula X is known, e.g. from WO 2007/048556, the compound of formula XIV is known e.g. from WO 2010/000612, the compound of formula XV is known e.g. from WO 2008/053044.
- the compound of formula VII is preferably Isopyrazam.
- the viscosity reducing agent is preferably an aryl sulphonate, e.g. as described above.
- the aqueous agrochemical concentrate comprises the agricultural active ingredient in an amount to allow application of the agrochemical active ingredient at an effective rate.
- the "effective rate" can be experimentally determined and depends on the type of agrochemical 5 active ingredient used.
- the concentration of the active ingredient in the concentrate could be also designed for ease of dilution by the end-user, e.g.
- the concentration of the active ingredient in the concentrate could also be designed to reduce packaging and transportation costs.
- the agrochemical active ingredient may be up to 700 g/l, e.g. 10-500 g/l, e.g. 50- 10 300 g/l.
- the aqueous agrochemical concentrate comprises an effective amount of the viscosity reducing agent, e.g. a concentration such that the viscosity of the aqueous agrochemical concentrate comprising the adjuvant is reduced compared to the absence of the agent.
- An 15 effective amount of the viscosity reducing agent may be experimentally determined.
- the viscosity reducing agent when it is an aryl sulphonate or an aryl alcohol, it may be present in the aqueous agrochemical concentrate at at least 1 g/l, at least 5 g/l, at least 10 g/l, at least 20 g/l, at least 30 g/l, at least 50g/l, at least 100 g/l.
- the aryl sulphonate 20 or aryl alcohol may be present in the range from 1-500 g/l, from 10 - 400 g/l, from 10-200 g/l, from 10-150 g/l.
- the viscosity reducing agent when it is an aliphatic alcohol, it may be present in the aqueous agrochemical concentrate at at least 1 g/l, at least 5 g/l, at least 10 g/l, at least 25 20 g/l, at least 30 g/l, at least 50 g/l, at least 100 g/l I.
- the alcohol may be present in the range from 1-500 g/l, from 10-400 g/l, from 10-200 g/l, from 10-150 g/l.
- the aqueous agrochemical concentrate comprises a suspending agent it will contain an effective amount of the suspending agent. This may be experimentally determined.
- the proportion of adjuvant relative to active ingredient can readily be selected by one skilled in the art to meet the intended utility.
- the w/w ratio of adjuvant to active ingredient will range from 1 : 50 and 200: 1 and preferably from 1 : 5 to 20: 1.
- the aqueous agrochemical concentrates of the invention may contain more than one type of adjuvant, more than one type of viscosity reducing agent, and/or more than one type of agrochemical active ingredient.
- the aqueous agrochemical concentrate may include more than one viscosity reducing agent, e.g. it may contain an aryl sulphonate and an alcohol, in particular an aryl sulphonate and an aliphatic alcohol, e.g. an aryl sulphonate and an aliphatic mono alcohol.
- a preferred combination is cumene sulphonate and 2- ethylhexanol.
- the aqueous agrochemical concentrate may be various suitable formulation types, e.g. a suspension concentrate, a mixture of a suspension concentrate and soluble liquid, a mixture of a suspension concentrate and capsule suspension.
- a suspension concentrate e.g. a mixture of a suspension concentrate and soluble liquid
- a mixture of a suspension concentrate and capsule suspension e.g., the aqueous
- agrochemical concentrate is a suspension concentrate formulation.
- the invention provides use of a compound selected from:
- an aliphatic polyol comprising at least four contiguous carbon atoms; and 15 iv. an aryl alcohol;
- an aqueous agrochemical concentrate comprising an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine, and an agrochemical active ingredient, wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 20 50g/l.
- the compound is an aryl sulphonate, e.g. as described above.
- the compound is an aliphatic mono alcohol, e.g. as described above.
- the compound is an aliphatic polyol, e.g. as described above.
- the compound is an aryl alcohol, e.g. as described above.
- the adjuvant is one as defined above.
- the agrochemical active ingredient is a fungicide, more preferably a fungicide from the SDHI class of fungicides, even more preferably Isopyrazam.
- the invention provides a method comprising diluting the aqueous agrochemical concentrate in a spray tank.
- the invention provides a method of controlling or preventing infestation of 35 plants by phytopathogenic microorganisms by application of an aqueous agrochemical composition
- an adjuvant selected from an alkoxylated aliphatic acid, an alkoxylated aliphatic alcohol, an alkoxylated aliphatic amide and an alkoxylated aliphatic amine; wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l;
- the method comprises providing the agrochemical composition by diluting an aqueous agrochemical concentrate, wherein the concentratin of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l.
- the adjuvant is one as defined above.
- the agrochemical active ingredient is a fungicide, more preferably a fungicide from the SDHI class of fungicides, even more preferably Isopyrazam.
- Anti-settling agents are added to formulations to prevent the separation of components on long-term storage. Such anti-settling/structuring agents typically increase the viscosity of the formulation. However, as the formulation often has to be poured by the end user it is desirable for the stabilising structure to be easily broken by shear.
- the anti-settling agent is usually a swelling clay such as bentonite (sodium montmorillonite) which may be mixed with a water-soluble polymers to achieve synergistic rheological effects.
- the water-soluble polymer is usually a cellulose derivative or polysaccaharide such as Xanthan gum (Chemistry and Technology of Agrochemical Formulations, DA Knowles, Kluwer Academic Publishers 1998). However, we have found that commonly used suspending agents such as Bentopharm, Kelzan, Aerosil 200, Bentone SD-3, Bentone 1000, Jaguar HP120, Hydroxy propyl cellulose, are ineffective at high adjuvant concentration.
- the invention provides a method of suspending an agrochemical active ingredient in an aqueous agrochemical concentrate, which aqueous agrochemical concentrate comprises a) an adjuvant, which adjuvant is an alkoxylated fatty acid, an alkoxylated fatty alcohol, an alkoxylated fatty amide or an alkoxylated fatty amine, wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l;
- the method comprising including, e.g. adding, attapulgite in the agrochemical concentrate.
- Attapulgite is a hydrous magnesium aluminum silicate clay mineral with a unique structure made up of colloidal particles that are needle-like in shape. It is recognised as a distinct clay mineral. Attapulgite is described for example in Wolford, Journal of ASTM International, 2007, Vol. 4, No. 10, pages 1-4 (paper ID JAI 100396), and in Haden. W. L. Haden, Jr. Attapulgite: Properties and uses: in Clays and Clay Minerals, Proc. 10th Natl. Conf., Austin, Texas, 1961 Sometimes a high adjuvant concentration is desirable in order to increase the efficacy of the agrochemical active ingredient, or a high loaded formulation is more convenient for the end- user.
- the adjuvant may be present in the aqueous agrochemical concentrate at at least 100g/l, at least 180g/l, or at least 230g/l.
- the adjuvant may be 50 - 800 g/l of the agrochemical concentrate, e.g. 100 - 500 g/l, e.g. 150 - 400 g/l.
- the adjuvant may be an alkoxylated aliphatic acid, alkoxylated aliphatic alcohol, alkoxylated aliphatic amide or alkoxylated aliphatic amine as described above.
- the aqueous agrochemical concentrate comprises a viscosity reducing agent.
- the viscosity reducing agent may be a hydrotrope, e.g. as described in WO 2005/013692.
- Hydrotropes are generally considered to be molecules that solubilise hydrophobic compounds in water. Typically, hydrotropes are amphiphiles and consist of a hydrophilic part and a small hydrophobic part. Hydrotropes, e.g. those described in WO 2005/013692, include anionic benzoates, anionic benzosulphonates, anionic phosphates and
- phosphonates anionic benzophosphates, arylphosphates and phosphonates, neutral phenols such as catechol and resorcinol, aliphatic glycolsulfates, alicyclic bile salts, aliphatic carboxylates, aromatic carboxylates, naphthalene sulphonates, alkynaphthalene
- the viscosity reducing agent is selected from an aryl sulphonate, an aliphatic alcohol, an aryl alcohol, as described above. We have found that molecules from these classes function as viscosity reducing agents with the adjuvants of the invention and are highly effective at reducing the viscosity of the liquid phase.
- the viscosity reducing agent may be provided in salt form or unprotonated form. Suitable salts will be apparent to the person skilled in the art, e.g. alkali metal salts, e.g. sodium and potassium salts, and ammonium salts.
- the viscosity reducing agent could also be added to the formulation in the acidic form, forming the salt in-situ e.g. with a basic surfactant or a basic active ingredient.
- the agrochemical concentrate is a suspension concentrate as described above.
- the agrochemical composition may contain other ingredients found in commercial agrochemical concentrate formulations, e.g. surfactants, dispersants, polymers, wetting agents, other adjuvants stabilizers, pH modifiers, anti-freeze agents, suspending agents, emulsifiers, antifoam agents, pH stabilising agents, preservatives and the like.
- surfactants e.g. surfactants, dispersants, polymers, wetting agents, other adjuvants stabilizers, pH modifiers, anti-freeze agents, suspending agents, emulsifiers, antifoam agents, pH stabilising agents, preservatives and the like.
- the aqueous agrochemical concentrate preferably comprises an agrochemical active ingredient.
- the agrochemical active ingredient may be any agrochemical active ingredient, including pesticides, plant growth regulators, safeners, etc..
- a pesticide is for example a herbicide, fungicide or insecticide. These are described above.
- the agrochemical active ingredient is fungicide from the class of succinate dehydrogenase inhibitors (SDHI) as described above.
- SDHI succinate dehydrogenase inhibitors
- the aqueous agrochemical concentrate comprises the agricultural active ingredient in an amount to allow application of the agrochemical active ingredient at an effective rate as described above.
- the aqueous agrochemical concentrate may comprise an effective amount of the viscosity reducing agent as described above.
- the aqueous agrochemical concentrate comprising attapulgite comprise an effective amount of attapulgite. This may be experimentally determined.
- the attapulgite may be present in the aqueous agrochemical concentrate at a concentration of 1-40 g/l, e.g. 1-20 g/l, 5-20 g/l, e.g. 7-20g/l.
- the attapulgite will be present in the aqueous agrochemical concentrate at at least 1 g/l, at least 2, 3, 4, 5, 6, 7, 8, 9 or 10 g/l.
- the agrochemical concentrates of the invention may contain more than one type of adjuvant, more than one type of viscosity reducing agent, and/or more than one type of agrochemical active ingredient.
- the invention provides an aqueous agrochemical concentrate comprising a) an adjuvant, which adjuvant is an alkoxylated fatty acid, an alkoxylated fatty alcohol, an alkoxylated fatty amide or alkoxylated fatty amine, wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l;
- the aqueous agrochemical concentrate also comprises c) a viscosity reducing agent that is capable of preventing the adjuvant from adopting a liquid crystalline phase when mixed with water.
- the agrochemical active ingredient is a fungicide, more preferably a fungicide from the SDHI class of fungicides, even more preferably Isopyrazam.
- the invention provides use of attapulgite as a suspending agent in an aqueous agrochemical concentrate, which aqueous agrochemical concentrate comprises a) an adjuvant, which adjuvant is an alkoxylated fatty acid, an alkoxylated fatty alcohol, an alkoxylated fatty amide or an alkoxylated amine, wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l;
- the aqueous agrochemical concentrate also comprises c) a viscosity reducing agent that is capable of preventing the adjuvant from adopting a liquid crystalline phase when mixed with water.
- the agrochemical active ingredient is a fungicide, more preferably a fungicide from the SDHI class of fungicides, even more preferably Isopyrazam.
- the invention provides a method comprising diluting in a spray tank the aqueous agrochemical concentrate.
- the invention provides a method of controlling or preventing infestation of plants by plant pests by application of an aqueous agrochemical composition to the plants, plant parts or locus thereof, comprising
- an adjuvant which adjuvant is an alkoxylated fatty acid, an alkoxylated fatty alcohol, an alkoxylated fatty amide or an alkoxylated fatty amine; b) attapulgite; and
- the method comprises providing the agrochemical composition by diluting an aqueous agrochemical concentrate, wherein the concentration of adjuvant in the aqueous agrochemical concentrate is at least 50 g/l.
- the aqueous agrochemical concentrate also comprises d) a viscosity reducing agent that is capable of preventing the adjuvant from adopting a liquid crystalline phase when mixed with water.
- the agrochemical active ingredient is a fungicide, more preferably a fungicide from the SDHI class of fungicides, even more preferably Isopyrazam.
- alkoxylated fatty acid alkoxylated fatty alcohol, alkoxylated fatty amide and alkoxylated fatty amine are used interchangeably with alkoxylated aliphatic acid, alkoxylated aliphatic alcohol, alkoxylated aliphatic amide and alkoxylated aliphatic amine respectively.
- composition of products used in the Examples was as follows:
- Eltesol AC60 contains ammonium cumene sulphonate, 60%w/w ("Eltesol” is a trade mark).
- Eltesol ST90 contains sodium toluene sulphonate 90%w/w.
- Dowfax 2A1 and Dowfax 3B2 contain alkyl substituted diphenyl oxide disulphonate surfactants (in Dow trade literature described as having hydrotropic and surfactant properties in one molecule) ("Dowfax” is a trade mark).
- Dowfax 2A1 contains a branched C12 diphenyl oxide disulphonate, sodium salt, 45%w/w
- Dowfax 3B2 contains a linear C10 diphenyl oxide disulphonate, sodium salt, 45%w/w
- Berol AG 6202 contains 2-ethylhexyl polyglucoside, 65%w/w ("Berol" is a trade mark).
- Berol AG 6206 contains hexyl polyglucoside, 75%w/w
- MeadWestvaco Diacid H-240 from MeadWestvaco contains the compound:
- MeadWestvaco Diacid H-240 contains a C21 dibasic fatty acid, potassium salt, 40-45%w/w MeadWestvaco H240 is described as containing a hydrotrope in MeadWestvaco trade
- Rhodopol 23 contains standard grade xantham gum (antisettling agent) ("Rhodopol" is a trade mark).
- Atlox 4913 is polymethyl methacrylate-polyethylene glycol graft copolymer (dispersant) ("Atlox" is a trade mark).
- Soprophor 4D384 is Tristyrylphenol-16 EO, ammonium sulphate (dispersant) ("Soprophor” is a trade mark).
- Aerosol OTB is 85%w/w sodium dioctyl sulfosuccinate, 15%w/w sodium benzoate (wetter).
- Jaguar HP120 contains hydroxypropyl guar gum (anti-settling agent) ("Jaguar” is a trade mark).
- Amistar BIW is a commercial product containing azoxystrobin ("Amistar" is a trade mark).
- concentrations of hydrotropes quoted throughout the examples are the actual concentrations of the hydrotropes used, they are not the use concentrations of the products as supplied.
- concentration quoted in the example can be converted into a
- Isopyrazam suspension concentrate (SC) formulations were prepared with the compositions shown in Table 2.
- the Isopyrazam was bead milled in water containing the dispersing agents and the wetting agent to produce a concentrated fine particle suspension.
- the other formulation ingredients were added after the milling stage and incorporated with a high shear Silverson mixer.
- the dispersing and wetting agents used in all these compositions were a combination of Atlox 4913, Soprophor 4D384 and Aerosol OTB in a ratio of 18:6: 1.
- Viscosity data for the compositions 1-5 is shown in Table 3.
- the viscosity data was measured using Anton-Paar MCR 301 and 501 Rheometers using a CC17 cup and bob geometry. The samples were pre-sheared and left for 30 minutes before the viscosity was measured at 5 °C. Composition 1 was too viscous to determine an accurate measure of the viscosity within the time-frame of the experiment.
- the viscosity at a shear rate of 100s "1 was measured over a temperature range from 5°C to 40°C using a temperature increase of 1°C/minute. The results at 5°C are shown in Table 5.
- Viscosity reducing agent %w/v Viscosity (Pas)
- the 40%w/v oleyl ethoxylate (20 ethoxylate units) butyl end capped adjuvant solution in water forms a highly viscous liquid crystalline gel at 5°C.
- the solution containing 40%w/v oleyl ethoxylate (20 ethoxylate units) butyl end capped adjuvant in combination with 10%w/v propylene glycol also formed a highly viscous liquid crystalline gel at 5°C. Both of these samples were too viscous to determine an accurate measure of the viscosity within the timeframe of the experiment.
- Isopyrazam suspension concentrate (SC) formulations were prepared with the compositions shown in Table 8.
- the Isopyrazam was bead milled in water containing the dispersing agents and the wetting agent to produce a concentrated fine particle suspension.
- the other formulation ingredients were added after the milling stage and incorporated with a high shear Silverson mixer.
- the dispersing and wetting agents used in all these compositions were a combination of Atlox 4913, Soprophor 4D384 and Aerosol OTB in a ratio of 18:6:1.
- Formulations were prepared using the same method as outlined in Example 7. 90 g/l of a second active ingredient was added to the Isopyrazam and bead milled to achieve a dispersion of fine particulates. In this example the level of Oleyl ethoxylate 20EO butyl end capped was reduced to 235 g/l. A range of anti-settling systems was incorporated into this mixture and the physical stability measured with time at a standard temperature. The % of clear layer compared to the total sample height in a 28 ml vial was measured.
- Table 10 shows the surprising results that only attapulgite prevented significant separation of the formulation over 3 or more weeks stationary storage.
- Viscosity data for the compositions 1-5 is shown in Table 11.
- the viscosity data was measured using Anton-Paar MCR 301 and 501 Rheometers using a CC17 cup and bob geometry. The samples were pre-sheared and left for 30 minutes before the viscosity was measured at 25 °C.
- Table 11 shows only Attapulgite (1 1 g/l) gives the highly shear thinning rheological profile similar to commercial standard.
- a shear thinning rhelogical profile is commonly desirable to allow the formulation of both physical stable and pourable, in this particular example it is crucial due to the highly viscous nature of the mixture at low temperature yet highly mobile behaviour at high temperatures.
- pourability can be measured using CIPCA method MT148. As described by this method 500 ml of product was placed in a stopper measuring cylinder and allowed to stand undisturbed for 24 hours at the temperature indicated in the table below (Room temperature or 5°C). The contained is then emptied at an angle of 45° for 60 seconds and then inverted for 60 seconds. The percentage weight of the residue in the container with respect to the total mass of the original 500 ml is deemed the pourability value. A pourability value of below 5% is deemed acceptable for product registration.
- Table 12 shows the results of a commercial standard and two formulations prepared using the method outlined in example 7.
- Table 12 demonstrates that these products have acceptable pourability values even at low temperatures.
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- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Zoology (AREA)
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Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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RS20170181A RS55730B1 (en) | 2010-10-21 | 2011-10-21 | Agrochemical concentrates comprising alkoxylated adjuvants |
SI201131106A SI2629605T1 (en) | 2010-10-21 | 2011-10-21 | Agrochemical concentrates comprising alkoxylated adjuvants |
BR112013009454-0A BR112013009454B1 (en) | 2010-10-21 | 2011-10-21 | method for reducing the viscosity of an aqueous agrochemical concentrate, aqueous agrochemical concentrate, use of an aryl sulfonate and isopyrazam for reducing the viscosity of an aqueous agrochemical concentrate and method for controlling or preventing plant infestation by phytopathogenic microorganisms |
ES11772982.2T ES2616234T3 (en) | 2010-10-21 | 2011-10-21 | Agrochemical concentrates comprising alkoxylated adjuvants |
US13/880,627 US20130217746A1 (en) | 2010-10-21 | 2011-10-21 | Agrochemical concentrates comprising alkoxylated adjuvants |
EP11772982.2A EP2629605B1 (en) | 2010-10-21 | 2011-10-21 | Agrochemical concentrates comprising alkoxylated adjuvants |
HRP20170244TT HRP20170244T1 (en) | 2010-10-21 | 2017-02-15 | Agrochemical concentrates comprising alkoxylated adjuvants |
US16/678,110 US20200068879A1 (en) | 2010-10-21 | 2019-11-08 | Agrochemical concentrates comprising alkoxylated adjuvants |
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EP10188308.0 | 2010-10-21 | ||
EP10188306 | 2010-10-21 | ||
EP10188306.4 | 2010-10-21 | ||
EP10188308 | 2010-10-21 |
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US13/880,627 A-371-Of-International US20130217746A1 (en) | 2010-10-21 | 2011-10-21 | Agrochemical concentrates comprising alkoxylated adjuvants |
US16/678,110 Division US20200068879A1 (en) | 2010-10-21 | 2019-11-08 | Agrochemical concentrates comprising alkoxylated adjuvants |
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WO2012052545A2 true WO2012052545A2 (en) | 2012-04-26 |
WO2012052545A3 WO2012052545A3 (en) | 2012-08-23 |
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US (2) | US20130217746A1 (en) |
EP (1) | EP2629605B1 (en) |
BR (1) | BR112013009454B1 (en) |
ES (1) | ES2616234T3 (en) |
HR (1) | HRP20170244T1 (en) |
HU (1) | HUE033377T2 (en) |
PL (1) | PL2629605T3 (en) |
PT (1) | PT2629605T (en) |
RS (1) | RS55730B1 (en) |
SI (1) | SI2629605T1 (en) |
WO (1) | WO2012052545A2 (en) |
Cited By (4)
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---|---|---|---|---|
WO2019042710A1 (en) * | 2017-09-01 | 2019-03-07 | Syngenta Participations Ag | Adjuvants |
WO2019136111A1 (en) * | 2018-01-04 | 2019-07-11 | Dow Agrosciences Llc | High-load haloxyfop ester compositions |
EP3623468A1 (en) | 2015-06-09 | 2020-03-18 | Lymphact - Lymphocyte Activation Technologies, S.A. | Methods for the production of tcr gamma delta+ t cells |
WO2024126744A1 (en) | 2022-12-16 | 2024-06-20 | Syngenta Crop Protection Ag | Improved pesticidal compositions |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20150087350A (en) * | 2012-11-19 | 2015-07-29 | 아치 우드 프로텍션, 인코포레이티드 | Succinate dehydrogenase inhibitor containing compositions |
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- 2011-10-21 EP EP11772982.2A patent/EP2629605B1/en not_active Revoked
- 2011-10-21 PT PT117729822T patent/PT2629605T/en unknown
- 2011-10-21 WO PCT/EP2011/068435 patent/WO2012052545A2/en active Application Filing
- 2011-10-21 US US13/880,627 patent/US20130217746A1/en not_active Abandoned
- 2011-10-21 RS RS20170181A patent/RS55730B1/en unknown
- 2011-10-21 PL PL11772982T patent/PL2629605T3/en unknown
- 2011-10-21 HU HUE11772982A patent/HUE033377T2/en unknown
- 2011-10-21 BR BR112013009454-0A patent/BR112013009454B1/en active IP Right Grant
- 2011-10-21 SI SI201131106A patent/SI2629605T1/en unknown
- 2011-10-21 ES ES11772982.2T patent/ES2616234T3/en active Active
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2017
- 2017-02-15 HR HRP20170244TT patent/HRP20170244T1/en unknown
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Cited By (7)
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EP3623468A1 (en) | 2015-06-09 | 2020-03-18 | Lymphact - Lymphocyte Activation Technologies, S.A. | Methods for the production of tcr gamma delta+ t cells |
WO2019042710A1 (en) * | 2017-09-01 | 2019-03-07 | Syngenta Participations Ag | Adjuvants |
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Also Published As
Publication number | Publication date |
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US20130217746A1 (en) | 2013-08-22 |
BR112013009454B1 (en) | 2018-10-23 |
HRP20170244T1 (en) | 2017-04-21 |
PL2629605T3 (en) | 2017-07-31 |
HUE033377T2 (en) | 2017-11-28 |
EP2629605B1 (en) | 2016-12-28 |
ES2616234T3 (en) | 2017-06-12 |
SI2629605T1 (en) | 2017-05-31 |
US20200068879A1 (en) | 2020-03-05 |
PT2629605T (en) | 2017-02-27 |
EP2629605A2 (en) | 2013-08-28 |
RS55730B1 (en) | 2017-07-31 |
BR112013009454A2 (en) | 2016-07-19 |
WO2012052545A3 (en) | 2012-08-23 |
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