WO2013038426A1 - Tissus polymères à libération contrôlée, imprégnés d'insecticides pour une lutte antiparasitaire - Google Patents

Tissus polymères à libération contrôlée, imprégnés d'insecticides pour une lutte antiparasitaire Download PDF

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Publication number
WO2013038426A1
WO2013038426A1 PCT/IN2012/000607 IN2012000607W WO2013038426A1 WO 2013038426 A1 WO2013038426 A1 WO 2013038426A1 IN 2012000607 W IN2012000607 W IN 2012000607W WO 2013038426 A1 WO2013038426 A1 WO 2013038426A1
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WIPO (PCT)
Prior art keywords
fabric
active ingredient
active ingredients
yarns
filament
Prior art date
Application number
PCT/IN2012/000607
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English (en)
Inventor
Natarajan RAMANATHAN
Anand SAMIAPPAN
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V.K.A. Polymers Private Limited
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Filing date
Publication date
Application filed by V.K.A. Polymers Private Limited filed Critical V.K.A. Polymers Private Limited
Publication of WO2013038426A1 publication Critical patent/WO2013038426A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • 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
    • A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A01N25/10—Macromolecular compounds
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins

Definitions

  • the present invention relates to a process of manufacturing controlled release polymer fabrics for pest control. More particularly, the invention relates to a controlled release polymer fabrics made up of insecticide incorporated polymer filaments with long lasting shelf life. In further scope of the present invention, plurality of such filament types each containing a different class of insecticide that not only differ in their chemical nature but also in their mode and/or mechanisms of action are combined into a fabric to effectively fight against susceptible as well as resistant strains of household/agro pests.
  • VBD Vector-borne diseases
  • helminthes and apicoplast parasites.
  • arthropod vectors carry the pathogens from one host to another and transmit the diseases.
  • the VBD transmission to humans depend on three different factors namely, the pathologic agent, the arthropod vector, and the human host.
  • VBDs Although complete eradication of VBDs is difficult due to their zoonotic nature of transmission, overcoming the misery of VBDs can be achieved through multidisciplinary approaches includes: (a) controlling of pathogens, (b) curbing the vectors, and (c) improving public sanitation.
  • the methods used presently for controlling pests are proving to be ineffective due to developing resistance against pesticides by insects.
  • the common methods to control these insects include surface treatment, air spraying, smoking and impregnation of curtains and bed-nets.
  • Impregnation of textiles with insecticides is mostly done by dipping the textile material into emulsions or dispersions of insecticides or spraying them onto the nets. Since this provides only a loose adhesion of the insecticides molecules on the surface of the fibers, this treatment is not wash permanent and has to be repeated after each washing.
  • stearates and amides help in dispersion of pigments and fillers they bloom and are migratory.
  • the migration tendency affects the retention of insecticide in the polymer.
  • stearates require higher processing temperature during extrusion and this leads to thermal degradation and in cases like pyrethroids (deltamethrin) thermal induced isomerization takes place and a small percentage of the active ingredient is converted to an inactive isomeric form.
  • US 5,238,682 discloses the fiber surface coated or deposited with a mixture of pesticide and due to which the interior of the fibers is impregnated with a mixture.
  • this impregnation of chemical on the fiber in said application is superficial impregnation and not a true impregnation.
  • the true impregnation implies where the active chemical is infused into the fiber during the process of extrusion.
  • US 5,631,072 discloses the manufacture of fabric intended to be made into washable garments, more specifically to the placement of an insecticide such as permethrin in the fabric by impregnation with polymeric binders and a cross-linking agent, or by surface coating with a polymeric binder and a thickening agent to improve the efficiency as an insect repellent and retention of the permethrin in the fabric as an effective insecticide through successive washings of the garments.
  • the amount of insecticide in the solutions for impregnation of the fabric is very high (1250 mg insecticide per m 2 ).
  • US 20070196412 discloses an impregnated textile material or plastics material comprising at least one insecticide and/or at least one repellent, and at least one binder and processes for impregnation of a textile material or plastics material and a process for coating of a textile material or plastics material.
  • the available prior arts do not provide sufficient wash fastness and long lasting blo-efficacy and combination of insecticides to handle resistant species, and the present invention is concerned with a solution to this problem. Therefore, what is needed is a wash durable insecticide treated fabric wherein the active ingredient is easily incorporated into the fabric without any binder and is prevented from being washed off by being slowly released from the reservoir inside the surface. What is needed is to use of combination of polymeric yarns/ filaments each incorporated with different insecticides and independently released in a controlled manner from the cores of the filaments/yarns.
  • the main object of this invention is to provide insecticides incorporated controlled refease polymer fabrics for pest control including the resistant species.
  • Another object of this invention is to provide a process to incorporate the pesticides inside the fiber.
  • Another object of this invention is to provide very high wash durability, high retention and long-lasting fabrics incorporated with pesticides.
  • Another object of this invention is to provide additives to improve retention index for the insecticide in polymer fabrics. It is an object of the present invention to increase the functional period over which the fabric incorporated with insecticide is effective, without being required to increase initial insecticide concentrations.
  • the present Invention relates to the process of manufacturing controlled release fabrics, made of insecticide incorporated polymer filaments selected from the group of, but not limited to, multifilament, monofilament, tape yarn and etc. More particularly, the invention relates to controlled release polymer fabrics made up of insecticide incorporated polymer filaments. In further scope of the present invention plurality of such filament types each containing a different class of insecticide that not only differ in their chemical nature but also in their mode and/or mechanisms of action are combined into a surface structure to effectively fight against susceptible as well as resistant strains of household/agro pests.
  • the present invention relates to a process of manufacturing controlled release fabrics, made of insecticide incorporated polymer filaments selected from the group of but not limited to multifilament, monofilament, tape yarn etc. More particularly, the Invention relates to a controlled release polymer fabrics made up of Insecticide incorporated polymer filaments with long lasting shelf life.
  • linear low density polyethylene (LLDPE) or polypropylene (PP) master batch contains various Active Ingredients (Al) such as deltamethrin, bifenthrin, fipronil and alike, which are extruded in the form of granules.
  • Al Active Ingredients
  • Concentration of Al in a master batch depends on the nature of insecticide, its thermal stability to withstand extrusion temperature, and the final concentration of Al in the fabric to be manufactured.
  • master batch is then mixed with the polyolefin granules (high density polyethylene HDPE or PP) and the let-dawn-ratio (LDR) is decided on the basis of the final concentration of Al required fight against the target pest.
  • LDR let-dawn-ratio
  • a pigment and functional additives such as antioxidants and UV inhibitors are added during the extrusion of yarn or the master batch itself to enhance the functionality of the end product.
  • the monofilament, multifilament or tape yarn is then extruded at a temperature range of 120°C- 250 °C. The temperatures of different extrusion zones depend on the polymer matrix and thermal stability of the Al incorporated into the filaments/ yarns.
  • the yarn thickness is varied from 50-350 deniers and this again depends on the infusibility of the A! to be released in a controlled manner, and the nature and purpose of the fabric.
  • the controlled release of an Al from polymer matrix is governed by the molecular mass, vapour pressure of the Al, area of cross section of the fibre and the nature of the polymer matrix.
  • a combination of two or more such yarns thus produced each incorporated with different Al is used in making the combination fabrics.
  • Four types of fabrics namely, monofilament warp knitted fabric, multifilament warp knitted fabric, multifilament jacquard woven fabric, and poly-woven sheets were manufactured.
  • the Al combination and the nature of the fabric could be chosen based upon the target pest, its resistance to an insecticide and the desired purpose of application of the new combination fabric.
  • the Als differ in their mode of action and or mechanisms of action which delays the process of resistance development by a target pest for a given At.
  • the insecticidal property of the fabric thus produced is due to the dual action of the active ingredients which results in better bio-efficacy through synergy achieved through a combination of two or more different classes of insecticides.
  • sodium channel blockers such as pyrethroids (Class-A) and nicotinic acetylcholine receptor (nAChR) agonist such as neonicotinoids (Class-B), nAChR agonist and insect growth regulators such as juvenile hormone mimics (Class C) or sodium channel blockers and gama-aminobutyric acid (GABA) receptor blockers are used in different combinations.
  • the insecticides not only differ in their chemical constituents but also in their mode and/or mechanisms of actions.
  • two active ingredients and a synergist can also be combined to enhance the activity of an Al for improved bio-efficacy.
  • the textile product thus manufactured does not use any binder to fix the insecticide on the surface, instead has the insecticides incorporated into the filaments/yarns and thus utilizes a true controlled chemical release technology to achieve long-lasting bio-efficacy and very high wash durability.
  • additives comprising of copolymer containing acid groups are used to improve retention index for the insecticide in polymer fabrics. These additives also help to attain better dispersion of insecticide, pigments, fillers and help in reducing the processing temperature preventing any thermal degradation of the insecticides during processing.
  • Use of the copolymeric additives with acidic groups as processing additives help in minimizing wastage of active ingredients by avoiding/reducing thermal decomposition, degradation or isomerization of the pesticide.
  • Bed bugs are the primary target pest.
  • the fabric is expected to have knockdown and mortality for other household pests including but not limited to roaches, ants, termites, ticks, sand fly, silver fish, house fly, mosquitoes, and spider.
  • molecules of an Active Ingredient diffuse through the polymer matrix to the surface of the filaments until equilibrium is reached and this maintains the concentration of an Al available to kill the pest(s) on the surface of the fabric.
  • the concentration is lethal for the pest(s) and far too less to be toxic for a human.
  • Most of the Al is inside the polymer matrix like a reservoir and replenishes the Al lost from the surface by abrasion, washing etc.
  • the rate of diffusion of an Al through the polymer matrix depends on its molecular mass, vapor pressure, molar concentration, filament thickness, crystalinity of the polymer matrix and the diffusion controlling additives in the polymers.
  • the release characteristics of a controlled release fabric is fine tuned for sustained maximum bio-efficacy by manipulating some or all of the factors mentioned above, Furthering to this, the concentration of an Al in unit area of the fabric can further be adjusted by changing the pattern or surface structure of the fabric by increasing/decreasing the frequency of filaments containing a particular Class of Al. This provides a unique mode of controlling the pesticide availability and makes it possible to custom design the fabric based on prevailing insecticidal resistance history.
  • concentration of the chemical that acts by different mode of action will be increased while keeping pyrethroid concentration minimum by changing surface structure of the fabric or the fabric pattern or pyrethroid incorporated yarns will be replaced by chemical of different class while manufacturing the fabric.
  • a method for preparing controlled release polymer fabrics comprising the steps of extrusion of active ingredients into master batches in the form of granules with copolymer additives; mixing of active ingredient granules thus obtained with high density polyethylene HDPE, LLDPE, LDPE or Polypropylene; extrusion of filaments at temp 120°C-250 °C and incorporation of filaments with said active ingredients combining two or more impregnated or incorporated filaments or yarns to produce a wash durable insecticidal fabrics
  • the said filament includes but not limited to monofilaments, multifilaments, tape yarns, fibers and alike; the said active ingredients are infused or incorporated into the filament using the process of extrusion; the said copolymer additives are those with acidic groups so as to enhance the retention index of the active ingredient in the polymer and also help reducing the temperatures during the extrusion process; the said incorporation occurs within the fiber and only a small fraction of active ingredients diffuse
  • the said active ingredients are extruded from but not limited to master batch of linear low density polyethylene LLDPE, HDPE, LDPE or polypropylene PP.
  • the said active ingredients are selected from but not limited to flpronil, bifenthrin, deltamethirn, alpha-cypermethrin or a combination thereof.
  • the concentration of active ingredients in a master batch depends on the nature of insecticide, its thermal stability to withstand extrusion temperature, and the final concentration of active ingredients in the fabric to be manufactured using the master batch.
  • the molecules of active ingredient diffuse through the polymer matrix to the surface of the filament until equilibrium is reached to maintain the concentration of the active ingredient on the surface of the fabric.
  • the concentration of an active ingredient in a unit area of the fabric is alternatively adjusted by changing the pattern of the fabric or surface structure of the fabric which includes the type and shape of filament or yarn or by increasing the frequency of a particular filament containing a particular class of active ingredient.
  • a method for preparing controlled release polymer fabrics wherein the extrusion of active ingredients in the form of granules is done with copolymer additives with high density polyethylene HDPE, LLDPE, LDPE or polypropylene thus obviating the requirement of preparing master batch.
  • a controlled released polymer fabric comprising of active ingredient incorporated polymer filaments having high wash durability wherein the said filament includes but not limited to monofilaments, multifilaments, tape yarns, fibers and alike; the said active ingredient is selected from but not limited to fipronil, bifenthrtn, deltamethirn, alpha-cypermethrin or a combination thereof; at least one active ingredient is used for a single yarn and a combination of plurality of yarns having plurality of active ingredient or plurality of class of chemicals are woven or non-woven or knitted together in the fabric; and each active ingredient is released independently without interference from the other.
  • the molecules of active ingredient diffuse through the polymer matrix to the surface of the filament until equilibrium is reached to maintain the concentration of an active ingredient on the surface of the fabric.
  • a controlled released polymer fabric comprising of active ingredient coated polymer filaments having high wash durability wherein the said filament includes but not limited to monofilaments, multifilaments, tape yarns, fibers and alike; the said active ingredients are preferably fipronil and bifenthrtn; combination of yarns having coating of fipronil and yarns having coating of bifenthrin are woven or non-woven or knitted together to form the fabric; and the said coating of active ingredients is achieved by the methods known in the state of the art.
  • a master batch (MB) contains higher concentration of an Al, dispersants and carrier resin. Four different master batches are manufactured. The Al contents along with the Al used are given in Table 1.
  • the polymer matrix of master batch is LLDPE or polypropylene.
  • master batches contain and other processing aides based on the application and the type of yarn to be extruded in the next stage.
  • Two different monofilament yarns each incorporated with different Als are used in making the new combination fabric that releases different Als independently in a controlled manner.
  • this is achieved by using different yarns in the set of Ground bar-1 (front beams) and Ground bar-3 (rear beams).
  • the concentration of Al in the fabric can be varied by choosing the Al incorporated in the Ground Bar-1 and Ground bar-3.
  • the yarns containing 0.5% bifenthrin is loaded in the Ground Bar-1 and combined with yarns containing 0;4% fipronil in the Ground bar-3 the final concentration of Als in the combination fabric is approximately 0,35% bifenthrin and 0.12% fipronil.
  • the Al concentration of the fabric is approximately 0.3% fipronil and 0.15% bifenthrin.
  • the Al contents in a fabric can be changed after extruding the yarns.
  • the present invention takes advantage of intricate knitting procedures to manufacture insecticide incorporated long lasting insecticidal fabrics.
  • the Al contents of two such fabrics BF and FB (the nomenclature BF and FB indicates the Insecticides incorporated in the yarns in the Ground Bar-1 and the Ground bar-3) manufactured are given in Table 3.
  • Poly woven sheet Two types of polypropylene tape yarns were extruded. One was incorporated with fipronil and the other with bifenthrin (Al contents of them are given in Table 2). The two tape yarns were used to manufacture poly woven sheet. As every tape yarn is crossing the other like the warp and the weft the concentration of the Als in the final fabric is approximately 50% of their concentration in individual tape yarns.
  • Multifilament polypropylene yarns incorporated with alpha-cypermethrin was combined with polyester yarns to manufacture a fabric in a jacquard machine.
  • This example is included in the present invention to illustrate the application to jacquard fabrics which might be used as curtains etc.
  • Bed bugs are wingless insects that belong to the family clmicidae. Bed bugs and other members of the family thrive by sucking blood from birds and animals. The two species that feed on humans are the common bed bug Cimex lectularis and the tropical bed bug Cimex hemipterus. Bed bugs undergo metamorphosis in five stages. The juvenile stages are known as nymphs. Nymphs look very much like their adults but smaller and sexually immature. The nymphs grow to adults by moulting and each nymph must have a blood meal to move to the next stage. Complete life cycle from egg to adult requires five weeks to two months. The period depends on temperature and availability of food (blood). The optimum temperature for rapid development is around 25 °C. Bed bug can live without feeding for many days. The adult survive longer than the nymphs.
  • Bed bugs are not vectors of any known disease. Hence, do not transmit disease. However, their bites can be uncomfortable and in some cases it cause severe allergic reactions. Due to the use of pesticides bed bug population dropped after the World War II in many countries. However, in the last ten years there is alarming resurgence of bed bugs in several countries across the Europe, Mexico, the USA, Australia and also in Asian countries. There is an increase use of pesticide formulation that contains synthetic pyrethroids such as deltamethrin (suspend SC), permethrin, lamda-cyhalothrin (demand CS), esfenvalerate (Onslaught) ® .
  • synthetic pyrethroids such as deltamethrin (suspend SC), permethrin, lamda-cyhalothrin (demand CS), esfenvalerate (Onslaught) ® .
  • non-pyrethroid pesticides such as chlorfenapyr (Phantom) ® , (S)hydroprene (Gentrol) ® have become popular. However, they are not very effective like pyrethroid. Chlorfenapyr requires ten days to kill the bugs. Hydroprene being an insect growth regulator prevents moulting of nymphs and renders the adults sterile. Hence, hydroprene formulations are to be used in conjunctions with other insecticides. Formulations containing combination of insects are also reported.
  • Bifenthrin is a pyrethroid acts by blocking the sodium channel while fipronll is a phelypyrazole acts by blocking gamma-aminobutyric acid (GABA) receptor.
  • GABA gamma-aminobutyric acid
  • Active ingredient in a incorporated yarn, master batch or fabric was determined by heating the fabric, yarn or master batch under reflux for 30 minutes with xylene and determined by Gas Chromatography with Flame lonisation Detection (GC-FID) using the internal standard calibration. Octacosane or dioctyl phthalate was used as the internal standard.
  • the xylene solution was suitably diluted to get the Al concentration within calibration range (10 ppm to 300 ppm). From a fabric piece of length 10 m and width 150 cm five pieces of 25 cm ⁇ 25 cm were cut with scissors and put into separate 250 mL screw capped glass bottles for determination of Al content.
  • Wash durability i.e. retention of an Al against washing was determined by washing and drying 25 cm ⁇ 25 cm fabric piece for definite number of washing-drying cycles.
  • Each individual piece of 25 cm x 25 cm of a fabric was washed with 500 mL 0.25 % soap solution [IEC-A Reference Detergent 60456 without Phosphate] in an equilibrium shaker at 150 revolutions per minute (RPM) with an amplitude at ambient room temperature (about 30°C) for 10 minutes. After washing, the piece is rinsed twice with 500 mL deionized water for each time in a bottle in the equilibrium shaker.
  • Fabric was put on the bottom of an 8 oz plastic cup and sealed at the edges.
  • Ten blood-fed mixed stage of bed bug nymphs were released on the surface of the fabric.
  • Bed bug nymphs were force exposed to the fabric for 24 hours.
  • Bed bug nymphs and adults were scored for knockdown at 5, 15, 30, 45 and 60 minutes, and 2, 3 and 4 hours after treatments.
  • bed bug nymphs were transferred to clean containers.
  • Mortality was assessed at 1 to 7 days post-treatment. If 100% mortality was observed at a particular time interval further observation was stopped.
  • Blood meals were provided to each life stage to ensure life cycle development.
  • Ten mixed-sex adults were used for each replicate with five replicates per treatment.
  • Bed bugs used for the bioassay were provided with a blood meal zero to two days prior to use in experiments

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

Abstract

La présente invention porte sur un procédé de fabrication de tissus polymères à libération contrôlée, destinés à une lutte antiparasitaire. En particulier, l'invention concerne des tissus polymères à libération contrôlée constitués de filaments polymères imprégnés d'insecticides. Dans une variante plus étendue de l'invention, plusieurs filaments de ce type contenant chacun une classe différente d'insecticide, ces insecticides se distinguant les uns des autres non seulement de par leur nature chimique, mais également de par leur mode et/ou leurs mécanismes d'action, sont combinés pour former un tissu servant à lutter efficacement contre des souches sensibles et des souches résistantes d'organismes nuisibles domestiques et agricoles. Ces nouveaux tissus polymères présentent une résistance élevée au lavage et ainsi une bio-efficacité prolongée à long terme.
PCT/IN2012/000607 2011-09-13 2012-09-12 Tissus polymères à libération contrôlée, imprégnés d'insecticides pour une lutte antiparasitaire WO2013038426A1 (fr)

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Application Number Priority Date Filing Date Title
IN3132/CHE/2011 2011-09-13
IN3132CH2011 2011-09-13

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WO2013038426A1 true WO2013038426A1 (fr) 2013-03-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021160947A1 (fr) 2020-02-14 2021-08-19 Ab7 Innovation Matrice solide composite pour la delivrance prolongee d'actifs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090258973A1 (en) * 2005-07-15 2009-10-15 Sanc Salaam Corporation Sustained-release thermoplastic polymer composition and product comprising the same
WO2010046348A1 (fr) * 2008-10-21 2010-04-29 Intelligent Insect Control Produit textile amélioré pour l'élimination des insectes
WO2010115709A1 (fr) * 2009-04-06 2010-10-14 Intelligent Insect Control Produit textile (par exemple un filet insecticide)
WO2011032172A1 (fr) * 2009-09-14 2011-03-17 Dow Global Technologies Inc. Polymeres contenant des unites issues d'ethylene et de siloxane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090258973A1 (en) * 2005-07-15 2009-10-15 Sanc Salaam Corporation Sustained-release thermoplastic polymer composition and product comprising the same
WO2010046348A1 (fr) * 2008-10-21 2010-04-29 Intelligent Insect Control Produit textile amélioré pour l'élimination des insectes
WO2010115709A1 (fr) * 2009-04-06 2010-10-14 Intelligent Insect Control Produit textile (par exemple un filet insecticide)
WO2011032172A1 (fr) * 2009-09-14 2011-03-17 Dow Global Technologies Inc. Polymeres contenant des unites issues d'ethylene et de siloxane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021160947A1 (fr) 2020-02-14 2021-08-19 Ab7 Innovation Matrice solide composite pour la delivrance prolongee d'actifs
FR3107203A1 (fr) 2020-02-14 2021-08-20 Ab7 Innovation Matrice solide composite pour la délivrance prolongée d’actifs

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