WO2024254039A1 - Microencapsulated pheromone formulations - Google Patents
Microencapsulated pheromone formulations Download PDFInfo
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- WO2024254039A1 WO2024254039A1 PCT/US2024/032359 US2024032359W WO2024254039A1 WO 2024254039 A1 WO2024254039 A1 WO 2024254039A1 US 2024032359 W US2024032359 W US 2024032359W WO 2024254039 A1 WO2024254039 A1 WO 2024254039A1
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- acetate
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- pheromone
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- microcapsule
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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
- A01N25/26—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests in coated particulate form
- A01N25/28—Microcapsules or nanocapsules
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- 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
- A01P17/00—Pest repellants
-
- 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
- A01P19/00—Pest attractants
Definitions
- compositions including microencapsulated pheromones are also described herein. Also described herein are methods of making compositions including microencapsulated pheromones. Also described herein are methods for controlling pests with the compositions.
- Microencapsulation provides a means of formulating pheromones for application to large areas in the control of insect populations by disruption of pheromone- mediated communication. Microencapsulation also helps to control the volatility of the pheromone. However, although microencapsulation of pheromones has been previously demonstrated, there remains a need for improved formulations including microencapsulated pheromones.
- the present disclosure provides formulations including microencapsulated pheromones.
- the formulations possess improved properties compared to conventional formulations including microencapsulated pheromones.
- the present disclosure enables formulations of pheromones that may be used in spray able agricultural formulations. Such sprayable formulations are essential for row crop applications.
- Formulations including microencapsulated pheromones according to the present disclosure may be manufactured by known methods of interfacial polymerization and they may be applied over large areas with conventional spray equipment. They possess numerous variables that may be manipulated to control the release characteristics (capsule wall composition, capsule wall thickness, capsule size and internal composition).
- the present disclosure is directed to a composition
- a composition comprising: an antifreeze agent; and a microcapsule comprising: a core comprising: a pheromone; and a solvent; and a shell encapsulating the core; wherein the shell comprises a polymer produced by autopolymerization of a monomer; and wherein the microcapsule has a d90 value less than about 40 pm.
- the present disclosure is directed to a method of making a composition, the method comprising: forming a mixture comprising: an antifreeze agent; and a microcapsule comprising: a core comprising: a pheromone; and a solvent; and a shell encapsulating the core; wherein the shell comprises a polymer produced by autopolymerization of a monomer; and wherein the microcapsule has a d90 value less than about 40 pm.
- the present disclosure is directed to a method for controlling a pest comprising contacting the pest or its environment with a biologically effective amount of a composition comprising: an antifreeze agent; and a microcapsule comprising: a core comprising: a pheromone; and a solvent; and a shell encapsulating the core; wherein the shell comprises a polymer produced by autopolymerization of a monomer; and wherein the microcapsule has a d90 value less than about 40 pm.
- compositions, mixture, process or method that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, mixture, process or method.
- transitional phrase “consisting essentially of’ is used to define a composition or method that includes materials, steps, features, components, or elements, in addition to those literally disclosed, provided that these additional materials, steps, features, components, or elements do not materially affect the basic and novel characteristic(s) of the claimed invention.
- the term “consisting essentially of’ occupies a middle ground between “comprising” and “consisting of’.
- the use of “consisting essentially of’ herein allows the applicant, as lexicographer, to define the invention being claimed by excluding any material, step, feature . . .
- the term “about” provides an estimate of a value associated with the claimed invention, where the estimated value is reasonable when taken in context with the description of the invention and in view of what is known from information available to the public, as such information would be understood or interpreted by a person of ordinary skill in the art.
- the term “about” as used herein means that the estimated value will fall within plus or minus 10% of the associated value.
- the term “about” may be further defined by context, and it is within the applicant’s rights as lexicographer to define how “about” should be interpreted within the specific context in which it is used in describing the invention.
- wt% refers to the weight percent of the recited component relative to the total weight of the recited composition.
- substantially free generally refers to no more than 2 wt%. In some embodiments, “substantially free” refers to no more than 1.5 wt%, no more than 1.0 wt%, no more than 0.5 wt%, or no more than 0. 1 wt%.
- a “dlO value” means that the portion of particles with diameters smaller than this value is 10%.
- a '‘d50 value” means that the portion of particles with diameters smaller than this value is 50%.
- a “d90 value” means that the portion of particles with diameters smaller than this value is 90%.
- Particle size measurements can be made with a variety of different methods, techniques, and equipment. As described in the present disclosure, the particle sizes are not limited by any measurement method, technique, or equipment. In some embodiments, the particle sizes are measured with a technique selected from light scattering, static light scattering, dynamic light scattering, and combinations thereof. In some embodiments, the particle sizes are measured with a particle size analyzer. In some embodiments, the particle sizes are measured with a particle size analyzer configured to calculate particle size with a Fraunhofer approximation of light scattering. In some embodiments, the particle sizes are measured with a particle size analyzer selected from a Malvern Mastersizer 2000, a Malvern Mastersizer 3000, a HELOS/BR Sucell, and combinations thereof.
- '‘antifreeze” refers to a substance that can be added to water or an aqueous mixture to lower the freezing point of the water or aqueous mixture.
- invertebrate pest control means inhibition of invertebrate pest development (including mortality, feeding reduction, and/or mating disruption), and related expressions are defined analogously.
- the term “invertebrate pest” includes arthropods, gastropods, nematodes and helminths of economic importance as pests.
- arthropod includes insects, mites, spiders, scorpions, centipedes, millipedes, pill bugs and symphylans.
- gastropod includes snails, slugs and other Stylommatophora.
- nematode includes members of the phylum Nematoda, such as phytophagous nematodes and helminth nematodes parasitizing animals.
- helminth includes all of the parasitic worms, such as roundworms (phylum Nematoda), heartworms (phylum Nematoda, class Secementea), flukes (phylum Platyhelminthes, class Tematoda), acanthocephalans (phylum Acanthocephala), and tapeworms (phylum Platyhelminthes, class Cestoda).
- agronomic refers to the production of field; crops such as for food and fiber and includes the growth of maize or com, soybeans and other legumes, rice, cereal (e.g., wheat, oats, barley, rye and rice), leafy vegetables (e.g., lettuce, cabbage, and other cole crops), fruiting vegetables (e.g., tomatoes, pepper, eggplant, crucifers and cucurbits), potatoes, sweet potatoes, grapes, cotton, tree fruits (e.g., pome, stone and citrus), small fruit (e.g., berries and cherries) and other specialty crops (e.g., canola, sunflower and olives).
- crops such as for food and fiber and includes the growth of maize or com, soybeans and other legumes, rice, cereal (e.g., wheat, oats, barley, rye and rice), leafy vegetables (e.g., lettuce, cabbage, and other cole crops), fruiting vegetables (e.g., tomatoes, pepper, eggplant, crucifer
- nonagronomic refers to other than field crops, such as horticultural crops (e.g., greenhouse, nursery or ornamental plants not grown in a field), residential, agricultural, commercial and industrial structures, turf (e.g., sod farm, pasture, golf course, lawn, sports field, etc.), wood products, stored product, agro-forestry and vegetation management, public health (i.e. human) and animal health (e.g., domesticated animals such as pets, livestock and poultry, undomesticated animals such as wildlife) applications.
- horticultural crops e.g., greenhouse, nursery or ornamental plants not grown in a field
- turf e.g., sod farm, pasture, golf course, lawn, sports field, etc.
- wood products e.g., stored product, agro-forestry and vegetation management
- public health i.e. human
- animal health e.g., domesticated animals such as pets, livestock and poultry, undomesticated animals such as wildlife
- crop vigor refers to rate of growth or biomass accumulation of a crop plant.
- An “increase in vigor” refers to an increase in growth or biomass accumulation in a crop plant relative to an untreated control crop plant.
- the term “crop yield” refers to the return on crop material, in terms of both quantity and quality, obtained after harvesting a crop plant.
- An “increase in crop yield” refers to an increase in crop yield relative to an untreated control crop plant.
- biologically effective amount refers to the amount of a biologically active compound sufficient to produce the desired biological effect when applied to (i.e. contacted with) an invertebrate pest to be controlled or its environment, or to a plant, the seed from which the plant is grown, or the locus of the plant (e.g., growth medium) to protect the plant from injury by the invertebrate pest or for other desired effect (e.g., increasing plant vigor).
- Nonagronomic applications include protecting an animal from an invertebrate parasitic pest by administering a parasiticidally effective (i.e. biologically effective) amount of a biologically active compound of the disclosure, typically in the form of a composition formulated for veterinary' use, to the animal to be protected.
- a parasiticidally effective i.e. biologically effective
- the terms “parasiticidal” and “parasiticidally” refers to observable effects on an invertebrate parasite pest to provide protection of an animal from the pest. Parasiticidal effects typically relate to diminishing the occurrence or activity of the target invertebrate parasitic pest.
- Such effects on the pest include necrosis, death, retarded grow th, diminished mobility or lessened ability to remain on or in the host animal, reduced feeding and inhibition of reproduction.
- These effects on invertebrate parasite pests provide control (including prevention, reduction or elimination) of parasitic infestation or infection of the animal.
- compositions including an antifreeze and microcapsules where the microcapsules are relatively small and contain co-encapsulated pheromones and solvents.
- the most substantial improvements were observed with microcapsules having shells including a polymer produced by autopolymerization of a monomer and microcapsules having a d90 value less than about 40 pm.
- compositions including: an antifreeze agent; and a microcapsule including: a core including: a pheromone; and a solvent; and a shell encapsulating the core.
- the shell includes a polymer produced by autopolymerization of a monomer and the microcapsule has a d90 value less than about 40 pm.
- compositions according to the present disclosure may include microcapsules of any suitable size know n in the art that facilitate the compositions described herein.
- the size of the microcapsules affects the various characteristics of the encapsulant, as its size indicates the amount of carrier material from which the encapsulant is constructed. Reactivity and stability are directly related to the size of the microcapsules. Another important characteristic affected by the size of the resulting microcapsules is sedimentation in the dispersion and during application of the product.
- the formulations according to the present disclosure surprisingly exhibit good release rate characteristics for the pheromone and the capsules do not sediment in accelerated storage stability studies.
- the microcapsule has a d90 value in a range of from about 10 pm to about 40 pm. In some embodiments, the microcapsule has a d90 value in a range of from about 10 pm to about 25 pm. [36] In some embodiments, the microcapsule has a d90 value of at least 10 pm, at least 11 pm, at least 12 pm, at least 13 pm, at least 14 pm, at least 15 pm, at least 16 pm, at least 17 pm, at least 18 pm, at least 19 pm, at least 20 pm, at least 21 pm, at least 22 pm, at least 23 pm, at least 24 pm, at least 25 pm, at least 26 pm, at least 27 pm, at least 28 pm, at least 29 pm, at least 30 pm, at least 31 pm, at least 32 pm, at least 33 pm, at least 34 pm, at least 35 pm, at least 36 pm, at least 37 pm, at least 38 pm, or at least 39 pm. In some embodiments, the microcapsule has a d90 value of at most 11 pm,
- the microcapsule has a d50 value in a range of from about 5 pm to about 25 pm. In some embodiments, the microcapsule has a d50 value in a range of from about 5 pm to about 24 pm.
- the microcapsule has a dlO value in a range of from about 1 pm to about 10 pm.
- compositions according to the present disclosure may include any suitable auxiliary known in the art that facilitates the compositions described herein.
- the compositions may include an encapsulated auxiliary and/or anon-encapsulated auxiliary.
- the composition includes at least one auxiliary.
- the composition includes at least two auxiliaries.
- the composition includes at least three auxiliaries.
- the composition includes at least four auxiliaries.
- the auxiliary is selected from dispersants, surfactants, emulsifiers, wetting agents, biocides, antifoamers, antifreeze agents, rheology modifiers, solvents, stabilizers, UV stabilizers, UV absorbers, salts, excipients, antioxidants, and combinations thereof.
- the auxiliary comprises a rheology modifier selected from xanthan gum (e.g., Rhodopol 23, Kelzan S), clays, smectite clays, bentonite clays, hectorite clays, magnesium aluminosilicate clays (e.g., Acti-Gel 208, Veegum R), organically modified hectorite clays (e.g..
- xanthan gum e.g., Rhodopol 23, Kelzan S
- clays smectite clays
- bentonite clays e.g., hectorite clays
- magnesium aluminosilicate clays e.g., Acti-Gel 208, Veegum R
- organically modified hectorite clays e.g..
- Bentone LF silica (e.g., Aerosil 200), hydrophobically modified ethoxylated urethane (HEUR), anionic polyacrylate copolymer hydrophobically modified (HASE), anionic polyacrylate copolymer (ASE), rheology modifiers useful for aqueous systems (e.g., Rheovis rheology modifiers), and combinations thereof.
- silica e.g., Aerosil 200
- HEUR hydrophobically modified ethoxylated urethane
- HASE anionic polyacrylate copolymer hydrophobically modified
- ASE anionic polyacrylate copolymer
- rheology modifiers useful for aqueous systems e.g., Rheovis rheology modifiers
- compositions according to the present disclosure may include any suitable pheromone known in the art that facilitates the compositions described herein.
- the pheromone is selected from aldehyde pheromones, acetate pheromones, alcohol pheromones, ketone pheromones, epoxide pheromones, hydrocarbon pheromones, ester pheromones, and combinations thereof.
- the pheromone does not comprise an aldehyde pheromone.
- Examples of pheromones include Formaldehyde; 2,2-Dibromoacetaldehyde; Acetaldehyde; 2-Methyl-2-propenal; 2- Methylpropanal; 2-Propenal; 3.3-Dibromo-2-propenal; Propanal; 2-Butenal; 2-Methyl-2- butenal; 2-Methylbutanal; 2-Methylenebutanal; 3-Methyl-2-butenal; 3-Methyl-3-butenal; 3- Methylbutanal; Butanal; (E)-2-Pentenal; 2-Methylenepentanal; 2-Pentenal; 3-Methyl-l- (vinyloxy)-butane; 4-Methylpentanal; 4-Pentenal; 5-Methylfurfural; Furan-2-carbaldehyde; Pentanal; (E)-2-Hexenal; (E)-2-Methyl-2-hex
- pheromones include (Z)-5-decenyl acetate, dodecanyl acetate, (Z)-7- dodecenyl acetate, (E)-7-dodecenyl acetate, (Z)-8-dodecenyl acetate, (E)-8-dodecenyl acetate. (Z)-9 -dodecenyl acetate, (E)-9-dodecenyl acetate. (E)-lO-dodecenyl acetate, 11- dodecenyl acetate.
- pheromones include citral; geranial; neral; tetradecan-1 -al; pentadecan-l-al; pentadecen-l-al; hexadecan- 1 -al; (Z)-9-hexadecen-l-al; (Z)-l l- hexadecen-l-al; (7E,9E)-undeca-7,9-dien-l-al; (11Z, 13Z)-hexadecadien-l-al; (9Z,12E)- tetradecadien-l-al; (8E,10E)-dodecadien-l-al; (1 lZ)-hexadecadien-l-al; (9Z)-tetradecen-l- al; 6,10-dimethyl-5,9-undecadien-2-ol; (6E)-7,11 -dimethyl -3 -methylene- 1,6, 10-
- the pheromone is selected from (Z)-5-decenyl acetate, dodecanyl acetate, (Z)-7-dodecenyl acetate, (E)-7-dodecenyl acetate, (Z)-8-dodecenyl acetate, (E)-8-dodecenyl acetate, (Z)-9-dodecenyl acetate, (E)-9-dodecenyl acetate, (E)-10- dodecenyl acetate, 11 -dodecenyl acetate, (Z)-9.11 -dodecadienyl acetate, (E)-9,l l- dodecadienyl acetate, (Z)- 11 -tridecenyl acetate, (E)- 11 -tri decenyl acetate, tetradecanyl acetate, (E)-7-
- the loading level of the pheromone relative to the entire formulation is in a range of from about 5 wt.% to about 30 wt.%. In some embodiments, the loading level of the pheromone relative to the entire formulation is in a range of from about 5 wt.% to about 15 wt.%.
- the loading level is achieved by in situ autopolymerization of isocyanate monomers, which forms a polymeric membrane.
- the loading level of the pheromone relative to the entire formulation is at least about 5 wt.%, at least about 6 wt.%, at least about 7 wt.%, at least about 8 wt.%, at least about 9 wt.%. at least about 10 wt.%, at least about 11 wt.%, at least about 12 wt.%. at least about 13 wt.%. at least about 14 wt.%.
- the loading level of the pheromone relative to the entire formulation is at most about 6 wt.%, at most about 7 wt.%, at most about 8 wt.%, at most about 9 wt.%, at most about 10 wt.%, at most about 11 wt.%, at most about 12 wt.%, at most about 13 wt.%, at most about 14 wt.%, at most about 15 wt.%, at most about 16 wt.%, at most about 17 wt.%, at most about 18 wt.%, at most about 19 wt.%, at most about 20 wt.%, at most about 21 wt.%, at most about 22 wt.%, at most about 23 wt.%, at most about 24 wt.%, at most about 25 wt.%, at most about 26 wt.%, at most about 27 wt.%, at most about 28 wt.%, at most about 29
- the percentage of the pheromone in the organic phase is in a range of from about 10 wt.% to about 100 wt.%. In some embodiments, the percentage of the pheromone in the organic phase is in arange of from about 50 wt.% to about 100 wt.%. In some embodiments, the percentage of the pheromone in the organic phase is in a range of from about 70 wt.% to about 100 wt.%.
- the percentage of the pheromone in the organic phase is at least about 10 wt.%, at least about 15 wt.%, at least about 20 wt.%, at least about 25 wt.%, at least about 30 wt.%, at least about 35 wt.%, at least about 40 wt.%, at least about 45 wt.%, at least about 50 wt.%, at least about 55 wt.%, at least about 60 wt.%, at least about 65 wt.%, at least about 70 wt.%, at least about 75 wt.%, at least about 80 wt.%, at least about 85 wt.%, at least about 90 wt.%, or at least about 95 wt.%.
- the percentage of the pheromone in the organic phase is at most about 10 wt.%, at most about 15 wt.%, at most about 20 wt.%, at most about 25 wt.%, at most about 30 wt.%, at most about 35 wt.%, at most about 40 wt.%, at most about 45 wt.%, at most about 50 wt.%, at most about 55 wt.%. at most about 60 wt.%.
- the percentage of the wall material (e.g., isocyanate) relative to the organic phase is in a range of from about 5 wt.% to about 20 wt.%. In some embodiments, the percentage of the wall material (e.g., isocyanate) relative to the organic phase is in a range of from about 7 wt.% to about 15 wt.%. In some embodiments, the percentage of the wall material (e.g., isocyanate) relative to the organic phase is in a range of from about 10 wt.% to about 16 wt.%. In some embodiments, the percentage of the wall material (e.g., isocyanate) relative to the organic phase is in a range of from about 8 wt.% to about 12 wt.%.
- the percentage of the wall material (e.g., isocyanate) relative to the organic phase is at least about 3 wt.%, at least about 4 wt.%, at least about 5 wt.%, at least about 6 wt.%.
- the percentage of the wall material (e.g., isocyanate) relative to the organic phase is at most about 4 wt.%, at most about 5 wt.%, at most about 6 wt.%, at most about 7 wt.%, at most about 8 wt.%, at most about 9 wt.%, at most about 10 wt.%, at most about 11 wt.%, at most about 12 wt.%, at most about 13 wt.%, at most about 14 wt.%, at most about 15 wt.%, at most about 16 wt.%, at most about 17 wt.%, at most about 18 wt.%, at most about 19 wt.%, or at most about 20 wt.%.
- the percentage of the wall material e.g., isocyanate
- compositions according to the present disclosure may include any suitable solvent known in the art that facilitates the compositions described herein.
- the solvent may be a single solvent or a mixture of solvents.
- the solvent is selected from hydrophobic solvents including high flashpoint-type solvents, methylated seed oils, methyl oleate methyl ester oil, methyl linoleate methyl ester oil, mineral oils, paraffinic oil, tall oil fatty acid-based solvents, aromatic solvents (e.g., Aromatic 200, Aromatic 200ND), aromatic ester solvents, polybutenes, methyl esters of fatty acids, tributyl 2-acetate citrate, alkyl amides (e g., Agnique AMD10), benzyl acetate, wax esters, and combinations thereof.
- hydrophobic solvents including high flashpoint-type solvents, methylated seed oils, methyl oleate methyl ester oil, methyl linoleate methyl ester oil, mineral oils, paraffinic oil,
- the solvent includes methyl oleate methyl ester oil and methyl linoleate methyl ester oil. In some embodiments, the solvent includes methyl oleate methyl ester oil and methyl linoleate methyl ester oil and a solvent selected from hydrophobic solvents including high flashpoint-type solvents, methylated seed oils, mineral oils, paraffinic oil, tall oil fatty acid-based solvents, aromatic solvents, aromatic ester solvents, polybutenes, methyl esters of fatty acids, tributyl 2-acetate citrate, alkyl amides, benzy l acetate, wax esters, and combinations thereof.
- hydrophobic solvents including high flashpoint-type solvents, methylated seed oils, mineral oils, paraffinic oil, tall oil fatty acid-based solvents, aromatic solvents, aromatic ester solvents, polybutenes, methyl esters of fatty acids, tributyl 2-acetate citrate, alkyl amides, benzy l
- the pheromone and the solvent are each encapsulated. In some embodiments, the pheromone and the solvent are co-encapsulated. In some embodiments, the pheromone and the solvent are co-encapsulated with at least one auxiliary.
- compositions according to the present disclosure may include any suitable antifreeze agent known in the art that facilitates the compositions described herein.
- the antifreeze agent is selected from propylene glycol, glycerin, glycols, ethylene glycol, 1,2-butane diol, 1,3-butane diol, 2,3-butanediol, 1,4-butanediol, methanol, ethanol, propanol, butanol, and combinations thereof.
- the antifreeze agent is non-encapsulated. In some embodiments, a portion of the antifreeze agent is encapsulated.
- the shell comprises polyurea, isocyanate, and/or polyisocyanate.
- Suitable isocyanates include polyisocyanates and polyisocyanate prepolymers such as polymethylene polyphenyl isocyanates (e.g., PAPI 27), polymeric diphenyl methane diisocyanate (MDI) (e.g., Rubinate M or Suprasec 5025).
- isocyanates based on xylylene diisocyanate including but not limited to, TakenateTM 500 (XDI), TakenateTM 600 (hydrogenated XDI), TakenateTM D-l 10N (an adduct of XDI and trimethylol propane), TakenateTM D-131N (an XDI-trimer), and TakenateTM D-120 (an adduct of hydrogenated XDI and trimethylol propane), polyisocyanate-polyol adducts, polyfunctional aliphatic isocyanates, and the like.
- the shell is formed without an additionally added amine.
- the shell is formed via in situ autopolymerization.
- the polyurea is formed from an in situ autopolymerization of isocyanate monomers.
- isocyanate monomers may react with water in an aqueous phase to form carbamic acid which then converts to an amine and carbon dioxide. This amine then reacts with isocyanate monomers to form a polyurea.
- the composition is an agrochemical composition. In some embodiments, the composition is in a form selected from a premix and a tank mix. In some embodiments, the composition is a sprayable composition.
- compositions according to the present disclosure may be in any suitable form of compositions known in the art that facilitates the compositions described herein.
- Particularly preferred formulations of compositions in accordance with the present disclosure are capsule suspension concentrates (CS), mixed formulations (ZC) that include mixtures of suspension concentrates (SC) and capsule suspension concentrates (CS), mixed formulations (ZW) that include mixtures of emulsions, oil-in-water (EW) and capsule suspension concentrates (CS), and mixed formulations (ZE) that include mixtures of suspoemulsions (SE) and capsule suspension concentrates (CS).
- the composition is in a form of a CS formulation, a ZC formulation, a ZW formulation, or a ZE formulation.
- Sprayable formulations are typically extended in a suitable medium before spraying. Such formulations are formulated to be readily diluted in the spray medium, usually water, but occasionally another suitable medium like an aromatic or paraffinic hydrocarbon or vegetable oil. Spray volumes can range from about one to several thousand liters per hectare, but more ty pical ly are in the range from about ten to several hundred liters per hectare.
- Sprayable formulations can be tank mixed with water or another suitable medium for foliar treatment by aerial or ground application, or for application to the growing medium of the plant. Formulations can be metered directly into drip irrigation systems or metered into the furrow during planting. Formulations can be applied onto seeds of crops and other desirable vegetation as seed treatments before planting to protect developing roots and other subterranean plant parts and/or foliage through systemic uptake.
- compositions according to the present disclosure may be delivered by an autonomous vehicle.
- the autonomous vehicle may be a grounded vehicle.
- the autonomous vehicle may operate during the day and/or night.
- compositions according to the present disclosure may be aerially delivered.
- the compositions according to the present disclosure may be delivered by an unmanned vehicle or an unmanned aerial vehicle (UAV).
- UAV unmanned aerial vehicle
- the compositions according to the present disclosure may be delivered by a helicopter or fixed-wing airplane.
- compositions according to the present disclosure may be made according to any suitable method know n in the art that facilitates the compositions described herein.
- a method of making a composition comprising: forming a mixture comprising: an antifreeze agent; and a microcapsule comprising: a core comprising: a pheromone; and a solvent; and a shell encapsulating the core.
- the shell includes a polymer produced by autopolymerization of a monomer and the microcapsule has a d90 value less than about 40 pm.
- the method further includes encapsulating the pheromone and the solvent in the microcapsule prior to forming the mixture. In these embodiments, the microcapsule is added to the mixture. [65] In some embodiments, the method includes encapsulating the pheromone and the solvent in the microcapsule in the mixture. In these embodiments, the microcapsule is formed in situ in the mixture by known methods of interfacial polymerization.
- Microencapsulated formulations prepared by interfacial polymerization are beneficial for at least three reasons: i) they are easily manufactured on a large scale using known technology; ii) they are easily applied over large areas with conventional spray equipment; and iii) they possess numerous variables that can be manipulated to control the release characteristics (e.g. capsule wall thickness, capsule wall composition, capsule size and internal composition).
- compositions according to the present disclosure may be used according to any suitable purpose know n in the art that facilitates the compositions described herein.
- a method for controlling a pest comprising contacting the pest or its environment with a biologically effective amount of a composition comprising: an antifreeze agent; and a microcapsule comprising: a core comprising: a pheromone; and a solvent; and a shell encapsulating the core.
- the shell includes a polymer produced by autopolymerization of a monomer and the microcapsule has a d90 value less than about 40 pm.
- compositions of this disclosure are useful for controlling a wide spectrum of invertebrate pests.
- These pests include invertebrates inhabiting a variety of environments such as, for example, plant foliage, roots, soil, harvested crops or other foodstuffs, building structures or animal integuments.
- These pests include, for example, invertebrates feeding on foliage (including leaves, stems, flowers and fruits), seeds, wood, textile fibers or animal blood or tissues, and thereby causing injury or damage to, for example, growing or stored agronomic crops, forests, greenhouse crops, ornamentals, nursery crops, stored foodstuffs or fiber products, or houses or other structures or their contents, or being harmful to animal health or public health.
- foliage including leaves, stems, flowers and fruits
- seeds wood, textile fibers or animal blood or tissues
- compositions are thus useful agronomically for protecting field crops from phytophagous invertebrate pests, and also nonagronomically for protecting other horticultural crops and plants from phytophagous invertebrate pests.
- This utility includes protecting crops and other plants (i.e. both agronomic and nonagronomic) that contain genetic material introduced by genetic engineering (i.e. transgenic) or modified by mutagenesis to provide advantageous traits.
- traits include tolerance to herbicides, resistance to phytophagous pests (e.g., insects, mites, aphids, spiders, nematodes, snails, plant-pathogenic fungi, bacteria and viruses), improved plant growth, increased tolerance of adverse growing conditions such as high or low temperatures, low or high soil moisture, and high salinity, increased flowering or fruiting, greater harvest yields, more rapid maturation, higher quality and/or nutritional value of the harvested product, or improved storage or process properties of the harvested products.
- Transgenic plants can be modified to express multiple traits.
- plants containing traits provided by genetic engineering or mutagenesis include varieties of com, cotton, soybean and potato expressing an insecticidal Bacillus thuringiensis toxin such as YIELD GARD®, KNOCKOUT®, STARLINK®, BOLLGARD®, NuCOTN® and NEWLEAF®, INVICTA RR2 PROTM, and herbicide-tolerant varieties of com, cotton, soybean and rapeseed such as ROUNDUP READY®, LIBERTY LINK®, IMI®, STS® and CLEARFIELD®, as well as crops expressing A-acetyl transferase (GAT) to provide resistance to glyphosate herbicide, or crops containing the HRA gene providing resistance to herbicides inhibiting acetolactate synthase (ALS).
- GAT A-acetyl transferase
- the present compositions may exhibit enhanced effects with traits introduced by genetic engineering or modified by mutagenesis, thus enhancing phenotypic expression or effectiveness of the traits or increasing the invertebrate pest control effectiveness of the present compounds and compositions.
- the present compositions may exhibit enhanced effects with the phenotypic expression of proteins or other natural products toxic to invertebrate pests to provide greater-than-additive control of these pests.
- compositions of this disclosure can also optionally comprise plant nutrients, e.g., a fertilizer composition comprising at least one plant nutrient selected from nitrogen, phosphorus, potassium, sulfur, calcium, magnesium, iron, copper, boron, manganese, zinc, and molybdenum.
- a fertilizer composition comprising at least one plant nutrient selected from nitrogen, phosphorus, potassium, sulfur, calcium, magnesium, iron, copper, boron, manganese, zinc, and molybdenum.
- compositions comprising at least one fertilizer composition comprising at least one plant nutrient selected from nitrogen, phosphorus, potassium, sulfur, calcium and magnesium.
- Compositions of the present disclosure which further comprise at least one plant nutrient can be in the form of liquids or solids.
- Solid formulations comprising a fertilizer composition can be prepared by mixing the composition of the present disclosure with the fertilizer composition together with formulating ingredients and then preparing the formulation by methods such as granulation or extrusion.
- solid formulations can be prepared by spraying a solution or suspension of a composition of the present disclosure in a volatile solvent onto a previous prepared fertilizer composition in the form of dimensionally stable mixtures, e.g., granules, small sticks or tablets, and then evaporating the solvent.
- Nonagronomic uses refer to invertebrate pest control in the areas other than fields of crop plants.
- Nonagronomic uses of the present compositions include control of invertebrate pests in stored grains, beans and other foodstuffs, and in textiles such as clothing and carpets.
- Nonagronomic uses of the present compositions also include invertebrate pest control in ornamental plants, forests, in yards, along roadsides and railroad rights of way, and on turf such as lawns, golf courses and pastures.
- Nonagronomic uses of the present compositions also include invertebrate pest control in houses and other buildings which may be occupied by humans and/or companion, farm, ranch, zoo or other animals.
- Nonagronomic uses of the present compositions also include the control of pests such as termites that can damage wood or other structural materials used in buildings.
- Nonagronomic uses of the present compositions also include protecting human and animal health by controlling invertebrate pests that are parasitic or transmit infectious diseases.
- the controlling of animal parasites includes controlling external parasites that are parasitic to the surface of the body of the host animal (e.g., shoulders, armpits, abdomen, inner part of the thighs) and internal parasites that are parasitic to the inside of the body of the host animal (e.g., stomach, intestine, lung, veins, under the skin, lymphatic tissue).
- External parasitic or disease transmitting pests include, for example, chiggers, ticks, lice, mosquitoes, flies, mites and fleas.
- Internal parasites include heartworms, hookworms and helminths.
- compositions of the present disclosure are suitable for systemic and/or non- systemic control of infestation or infection by parasites on animals.
- Compositions of the present disclosure are suitable for combating external parasitic or disease transmitting pests.
- Compositions of the present disclosure are suitable for combating parasites that infest agricultural working animals, such as cattle, sheep, goats, horses, pigs, donkeys, camels, buffalos, rabbits, hens, turkeys, ducks, geese and bees; pet animals and domestic animals such as dogs, cats, pet birds and aquarium fish; as well as so-called experimental animals, such as hamsters, guinea pigs, rats and mice.
- Examples of agronomic or nonagronomic invertebrate pests include eggs, larvae and adults of the order Lepidoptera, such as armyworms, cutworms, loopers, and heliothines in the family Noctuidae (e.g., pink stem borer (Sesamia inferens Walker), com stalk borer (Sesamia nonagrioides Lefebvre), southern armyworm (Spodoptera eridania Cramer), fall army worm (Spodoptera frugiperda J. E.
- Noctuidae e.g., pink stem borer (Sesamia inferens Walker), com stalk borer (Sesamia nonagrioides Lefebvre), southern armyworm (Spodoptera eridania Cramer), fall army worm (Spodoptera frugiperda J. E.
- agronomic and nonagronomic pests include: eggs, adults and larvae of the order Dermaptera including earwigs from the family Forficulidae (e.g., European earwig (Forficula auricularia Linnaeus), black earwig (Chelisoches morio Fabricius)); eggs, immatures, adults and nymphs of the order Hemiptera such as, plant bugs from the family Miridae, cicadas from the family Cicadidae, leafhoppers (e.g.
- Agronomic and nonagronomic pests also include : eggs, larvae, nymphs and adults of the order Acari (mites) such as spider mites and red mites in the family Tetranychidae (e.g., European red mite (Panonychus ulmi Koch), twospotted spider mite (Tetranychus urticae Koch), McDaniel spider mite (Tetranychus mcdanieli McGregor)); flat mites in the family Tenuipalpidae (e.g., citrus flat mite (Brevipalpus lewisi McGregor)); rust and bud mites in the family Eriophyidae and other foliar feeding mites and mites important in human and animal health, i.e.
- Tetranychidae e.g., European red mite (Panonychus ulmi Koch), twospotted spider mite (Tetranychus urticae Koch), McD
- ticks in the family Ixodidae commonly known as hard ticks (e.g., deer tick (Ixodes scapularis Say), Australian paralysis tick (Ixodes holocyclus Neumann), American dog tick (Dermacentor variabilis Say), lone star tick (Amblyomma americanum Linnaeus)) and ticks in the family Argasidae, commonly known as soft ticks (e.g., relapsing fever tick (Ornithodoros turicata Duges), common fowl tick (Argas radiatus Raillet)); scab and itch mites in the families Psoroptidae, Pyemotidae, and Sarcoptidae; eggs, adults and immatures of the order Orthoptera including grasshoppers
- dijferentialis Thomas American grasshoppers (e.g., Schistocerca americana Drury), desert locust (Schistocerca gregaria Forsskal), migratory locust (Locusta migratoria Linnaeus), bush locust (Zonocerus spp.), house cricket (Acheta domesticus Linnaeus), mole crickets (e.g., tawny mole cricket (Scapteriscus vicinus Scudder) and southern mole cricket (Scapteriscus borelhi Giglio-Tos)); eggs, adults and immatures of the order Diptera including leafminers (e.g., Liriomyza spp.
- leafminers e.g., Liriomyza spp.
- serpentine vegetable leafminer Liriomyza sativae Blanchard
- midges fruit flies
- frit flies e.g., Oscinella frit Linnaeus
- soil maggots e.g.. Musca domestica Linnaeus
- lesser house flies e.g., Fannia canicularis Linnaeus.
- femoralis Stein stable flies (e.g., Stomoxys calcitrans Linnaeus), face flies, horn flies, blow' flies (e g., Chrysomya spp., Phormia spp.), and other muscoid fly pests, horse flies (e.g., Tabanus spp.), hot flies (e.g., Gasterophilus spp., Oestrus spp.), cattle grubs (e.g., Hypoderma spp.), deer flies (e.g., Chrysops spp.), keds (e.g., Melophagus ovinus Linnaeus) and other Brachycera, mosquitoes (e.g., Aedes spp., Anopheles spp., Culex spp.), black flies (e.g., Prosimulium spp., Simulium
- Hymenoptera including bees (including carpenter bees), hornets, yellow jackets, wasps, and sawflies (Neodiprion spp.; Cephus spp.); insect pests of the order Isoptera including termites in the Termitidae (e.g., Macrotermes sp., Odontotermes obesus Rambur), Kalotermitidae (e.g., Cryptotermes sp.), and Rhinotermitidae (e.g., Reticulitermes sp., Coptotermes sp., Heterotermes tenuis Hagen) families, the eastern subterranean termite (Reticulitermes flavipes Kollar), western subterranean termite (Reticulitermes hesperus Banks), Formosan subterranean termite (Coptotermes formosanus Shiraki), West Indian drywood termite (Incisitermes immigrans
- insect pests of the order Thysanura such as silverfish (Lepisma saccharina Linnaeus) and firebrat (Thermobia domestica Packard); insect pests of the orders Mallophaga and Phthiraptera, and including the head louse (Pediculus humanus capitis De Geer), body louse (Pediculus humanus Linnaeus), chicken body louse (Menacanthus stramineus Nitzsch).
- Additional arthropod pests covered include: spiders in the order Araneae such as the brown recluse spider (Loxosceles reclusa Gertsch & Mulaik) and the black widow spider (Latrodectus mactans Fabricius), and centipedes in the order Scutigeromorpha such as the house centipede (Scutigera coleoptrata Linnaeus).
- spiders in the order Araneae such as the brown recluse spider (Loxosceles reclusa Gertsch & Mulaik) and the black widow spider (Latrodectus mactans Fabricius)
- centipedes in the order Scutigeromorpha such as the house centipede (Scutigera coleoptrata Linnaeus).
- invertebrate pests of stored grain include larger grain borer (Prostephanus truncatus Hom), lesser grain borer (Rhyzopertha dominica Fabricius), rice weevil (Sitophilus oryzae Linnaeus), maize weevil (Sitophilus zeamais Motschulsky). cowpea weevil (Calio sobruchus maculatus Fabricius), red flour beetle (Tribolium castaneum Herbst), granary weevil (Sitophilus granarius Linnaeus).
- compositions of the present disclosure may be useful to control members of the Classes Nematoda, Cestoda, Trematoda, and Acanthocephala including economically important members of the orders Strongylida, Ascaridida, Oxyurida, Rhabditida. Spirurida, and Enoplida such as but not limited to economically important agricultural pests (i.e.
- compositions of the disclosure may be useful to control pests in the order Lepidoptera (e.g., Alabama argillacea Htibner (cotton leaf worm), Archips argyrospila Walker (fruit tree leaf roller), A. rosana Linnaeus (European leaf roller) and other Arch ips species, Chilo suppressalis Walker (rice stem borer), Cnaphalocrocis medinalis Guenee (rice leaf roller), Crambus caliginosellus Clemens (com root webworm), Crambus teterrellus Zincken (bluegrass webworm), Cydia pomonella Linnaeus (codling moth).
- Lepidoptera e.g., Alabama argillacea Htibner (cotton leaf worm), Archips argyrospila Walker (fruit tree leaf roller), A. rosana Linnaeus (European leaf roller) and other Arch ips species, Chilo suppressalis Walker (rice stem borer), C
- Earias insulana Boisduval spiny bollworm
- Earias vittella Fabricius spotted bollworm
- Helicoverpa armigera Htibner Oled World bollworm
- Helicoverpa zea Boddie Com earworm
- Heliothis virescens Fabricius tobacco budworm
- Herpetogramma licarsisalis Walker sod webworm
- Lobesia botrana Denis & Schiffermuller grape berry moth).
- Pectinophora gossypiella Saunders pink bollworm
- Phyllocnistis citrella Stainton citrus leafminer
- Pieris brassicae Linnaeus large white butterfly
- Pieris rapae Linnaeus small white butterfly
- Plutella xylostella Linnaeus diamondback moth
- Spodoptera exigua Htibner beet army worm
- Spodoptera litura Fabricius tobacco cutworm, cluster caterpillar
- Spodoptera frugiperda J. E. Smith fall armyworm
- Trichoplusia ni Htibner cabbage looper
- Tina absoluta Meyrick tomato leafminer
- compositions of the disclosure may be useful to control members from the order Hemiptera including: Acyrthosiphon pisum Harris (pea aphid), Aphis craccivora Koch (cowpea aphid), Aphis fabae Scopoli (black bean aphid), Aphis gossypii Glover (cotton aphid, melon aphid), Aphis pomi De Geer (apple aphid), Aphis spiraecola Patch (spirea aphid), Aulacorthum solani Kaltenbach (foxglove aphid), Chaetosiphon fragaefolii Cockerell (strawberry aphid), Diuraphis noxia Kurdjumov/Mordvilko (Russian wheat aphid), Dysaphis plantaginea Passerini (rosy apple aphid), Eriosomci lanigerum Hausmann (woolly apple aphid),
- Lipaphis pseudobrassicae Davis (turnip aphid), Metopolophium dirrhodum Walker (rose-grain aphid), Macrosiphum euphorbiae Thomas (potato aphid), Myzus persicae Sulzer (peachpotato aphid, green peach aphid), Nasonovia ribisnigri Mosley (lettuce aphid), Pemphigus spp.
- compositions of this disclosure may be useful to control members from the order Hemiptera including: Acrosternum hilare Say (green stink Anasa tristis De Geer (squash bug). Blissus leucopterus leucopterus Say (chinch bug).
- Thysanoptera e.g., Frankliniella occidentalis Pergande (western flower thrips), Scirtothrips citri Moulton (citrus thrips), Scirtothrips variabilis Beach (soybean thrips), and Thrips tcibaci Lindeman (onion thrips); and the order Coleoptera (e.g., Leptinotarsa decemlineata Say (Colorado potato beetle), Epilachna varivestis Mulsant (Mexican bean beetle) and wireworms of the genera Agriotes. Athous or Timonins').
- Thysanoptera e.g., Frankliniella occidentalis Pergande (western flower thrips), Scirtothrips citri Moulton (citrus thrips), Scirtothrips variabilis Beach (soybean thrips), and Thrips tcibaci Linde
- the pest is selected from the group consisting of invertebrate pests, insects, arthropods, and combinations thereof.
- the environment is selected from the group consisting of agricultural fields, orchards, forests, and combinations thereof.
- composition embodiments of this disclosure may be combined with the method embodiments of this disclosure in any manner.
- method embodiments of this disclosure may be combined in any manner.
- the following embodiments are, therefore, to be construed as merely illustrative, and not limiting of the disclosure in any way whatsoever.
- a composition comprising: an antifreeze agent; and a microcapsule comprising: a core comprising: a pheromone; and a solvent; and a shell encapsulating the core; wherein the shell comprises a polymer produced by autopolymerization of a monomer; and wherein the microcapsule has a d90 value less than about 40 pm.
- composition in accordance with any preceding clause, wherein the composition further comprises an auxiliary selected from dispersants, surfactants, emulsifiers, wetting agents, biocides, antifoamers, antifreeze agents, rheology modifiers, solvents, stabilizers, UV stabilizers, UV absorbers, salts, excipients, antioxidants, and combinations thereof.
- an auxiliary selected from dispersants, surfactants, emulsifiers, wetting agents, biocides, antifoamers, antifreeze agents, rheology modifiers, solvents, stabilizers, UV stabilizers, UV absorbers, salts, excipients, antioxidants, and combinations thereof.
- composition in accordance with any preceding clause, wherein the composition is an agrochemical composition.
- composition in accordance with any preceding clause, wherein the composition is in a form selected from a premix and a tank mix.
- composition in accordance with any preceding clause wherein the composition is in a form of a CS formulation or a ZC formulation.
- the shell comprises polyurea, isocyanate, and/or poly isocyanate.
- the antifreeze agent is selected from propylene glycol, glycerin, glycols, ethylene glycol, 1,2- butane diol, 1,3-butane diol, 2,3-butanediol, 1,4-butanediol, methanol, ethanol, propanol, butanol, and combinations thereof.
- the solvent is selected from hydrophobic solvents, high flashpoint-tj pe solvents, methylated seed oils, methyl oleate methyl ester oil.
- a method of making a composition comprising: forming a mixture comprising: an antifreeze agent; and a microcapsule comprising: a core comprising: a pheromone; and a solvent; and a shell encapsulating the core; wherein the shell comprises a polymer produced by autopolymerization of a monomer; and wherein the microcapsule has a d90 value less than about 40 pm.
- the method further comprises encapsulating the pheromone and the solvent in the microcapsule prior to forming the mixture.
- [102] 18 A method for controlling a pest comprising contacting the pest or its environment with a biologically effective amount of a composition comprising: an antifreeze agent; and a microcapsule comprising: a core comprising: a pheromone; and a solvent; and a shell encapsulating the core; wherein the shell comprises a polymer produced by autopolymerization of a monomer; and wherein the microcapsule has a d90 value less than about 40 pm.
- a composition comprising: an antifreeze agent; and a microcapsule comprising: a core comprising: a pheromone; and a solvent; and a shell encapsulating the core; wherein the shell comprises a polymer produced by autopolymerization of a monomer; and wherein the microcapsule has a d90 value less than about 40 pm.
- Example 2 Volatility control of non-encapsulated emulsion-in-water (EW) pheromone formulations.
- EW emulsion-in-water
- pheromones Z-l l-16 aldehyde and Z-l 1-16 acetate
- BEIT butylated hydroxy toluene
- 1.6-hexanediol a solvent
- Stepposol ME oil soluble emulsifier
- an aqueous phase was created by combining water with water soluble emulsifiers (Toximul SEE 340 with Toximul 8320 or Atlas G5000).
- the organic phase was then slowly charged into the aqueous phase and followed by a high shear step to create the concentrated emulsion.
- biocide, rheology modifier and antifreeze were added.
- the table below provides volatility control data for the prepared EW formulations. Volatility of final formulations was studied in a dark environmental chamber with high air flow.
- Example 3 Volatility control of microencapsulated Z9-14 acetate formulations.
- Encapsulation of the pheromone was achieved by forming microcapsule shells using isocyanate monomers only, without the addition of an amine.
- the isocyanate monomers self-polymerized.
- Capsules with different particle size were prepared (d90 ranging between 14 and 50 microns).
- Example 4 Volatility control of microencapsulated Zl l-16 acetate formulations.
- Encapsulation of the pheromone was achieved by forming microcapsule shells using isocyanate monomers only, without the addition of an amine. The isocyanate monomers self-polymerized. Capsules with different particle size were prepared (d90 ranging between 19 and 38 microns). [124] The below table provides volatility control data for the prepared formulations. Volatility control for the pheromone in a CS formulation was measured as described above.
- Example 5 Volatility control of microencapsulated mixed pheromone formulations.
- Encapsulation of the pheromone was achieved by forming microcapsule shells using isocyanate monomers only, without the addition of an amine. The isocyanate monomers self-polymerized. Capsules with different particle size were prepared (d90 ranging between 9 and 34 microns).
- Encapsulation of the pheromone was achieved by forming microcapsule shells using isocyanate monomers only, without the addition of an amine.
- the isocyanate monomers self-polymerized.
- the d90 of the formulation was measured to be 20 microns.
- Example 7 Chemical stability of the microencapsulated Z-l l-16 aldehyde formulations.
- Encapsulation of the pheromone was achieved by forming microcapsule shells using isocyanate monomers only, without the addition of an amine.
- the isocyanate monomers self-polymerized.
- the d90 of the formulation was measured to be 20 microns.
- Example 8 Chemical stability of the microencapsulated Z-l l-16 aldehyde formulations.
- Encapsulation of the pheromone was achieved by forming microcapsule shells using isocyanate monomers only, without the addition of an amine.
- the isocyanate monomers self-polymerized.
- Encapsulation of the Z-l 1-16 aldehyde pheromone was achieved by forming microcapsule shells using isocyanate monomers with the addition of an amine.
- the below table provides the recipes and corresponding assays for the formulations before and after aging studies at 54°C for 2 weeks. It was discovered that up to 60% of Z-l l-16 aldehyde pheromone is lost during sample preparation. An additional 10-30% pheromone is lost during aging.
- compositions including an antifreeze and microcapsules where the microcapsules are relatively small and contain co-encapsulated pheromones and solvents.
- the most substantial improvements were observed with microcapsules having shells including a polymer produced by autopolymerization of a monomer and microcapsules having a d90 value less than about 40 pm.
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Abstract
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