WO2018116117A1 - Moisture barrier package - Google Patents

Moisture barrier package Download PDF

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Publication number
WO2018116117A1
WO2018116117A1 PCT/IB2017/058044 IB2017058044W WO2018116117A1 WO 2018116117 A1 WO2018116117 A1 WO 2018116117A1 IB 2017058044 W IB2017058044 W IB 2017058044W WO 2018116117 A1 WO2018116117 A1 WO 2018116117A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
layers
polyethylene
product
thermoplastic polymer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2017/058044
Other languages
French (fr)
Inventor
Jaidev Rajnikant Shroff
Vikram Rajnikant Shroff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UPL Ltd
Original Assignee
UPL Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BR112019012702-0A priority Critical patent/BR112019012702B1/en
Priority to MYPI2019003467A priority patent/MY193730A/en
Priority to CU2019000059A priority patent/CU20190059A7/en
Priority to JP2019532757A priority patent/JP2020501997A/en
Priority to EA201991479A priority patent/EA201991479A1/en
Priority to MX2019007282A priority patent/MX2019007282A/en
Priority to US16/471,088 priority patent/US11634272B2/en
Priority to CN201780078730.5A priority patent/CN110088011A/en
Application filed by UPL Ltd filed Critical UPL Ltd
Priority to AU2017380834A priority patent/AU2017380834B2/en
Publication of WO2018116117A1 publication Critical patent/WO2018116117A1/en
Priority to CONC2019/0006426A priority patent/CO2019006426A2/en
Anticipated expiration legal-status Critical
Priority to ZA2019/04729A priority patent/ZA201904729B/en
Ceased legal-status Critical Current

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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2410/00—Agriculture-related articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • B32B2439/46—Bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • B65D2565/387—Materials used as gas barriers

Definitions

  • the present invention relates to a moisture barrier package. More particularly, the present invention relates to a moisture barrier package for moisture sensitive agrochemicals.
  • An essential prerequisite for selecting a packaging for moisture sensitive agrochemicals is to ensure that there is no interaction between the packaging material and the packaged material throughout the shelf life of the product.
  • the conventional formulation types for agrochemicals are wettable powders, water dispersible granules, dusting powders and granules.
  • Polyethylene is used in agrochemical packaging because of its moisture barrier properties. However, polyethylene alone does not form a sufficient packaging for agrochemicals because of its poor mechanical strength.
  • Biaxially oriented polyester has been widely used for packaging of aqueous based products. However, its water vapour transmission rate is higher than that of polyethylene making it unsuitable for packaging moisture sensitive compounds.
  • US 2015 02744008 published on 1 October 2015, discloses an agriculturally active product including a volume of material including an agriculturally active ingredient (acephate), and a package having a package centroid, an interior region, and a distant portion positioned farthest away from the package centroid, the interior region having an interior region centroid and containing the volume of material, the interior region centroid being spaced apart from the package centroid by an offset distance, the distant portion being spaced apart from the package centroid by a farthest distance, a ratio of the offset distance to the farthest distance being greater than 0.10.
  • WO 1992 017382 published on 15 October 1992, discloses a package containing an agrochemical which package comprises a first sheet of non-planar water soluble or water dispersible material and a second sheet of water soluble or water dispersible material superposed on the first sheet and sealed to it by a continuous closed water soluble or water dispersible seal along a continuous region of the superposed sheets.
  • this package suffers from poor mechanical strength and often fails the drop test.
  • US 5,224,601 published on 6 July 1993, discloses a packaging system containing a pesticidal composition.
  • the packaging system comprises a first sheet of non- planar water soluble or water dispersible material defining a concavity enclosing the pesticidal composition, a second sheet of water soluble or water dispersible materia! sealed to the first sheet by a continuous closed water soluble or water dispersible heat seal, and a third sheet between the first and second sheets and sealed thereto by a water soluble or water dispersible seal to divide the package into two compartments.
  • CA 2 285 202 discloses a system and method provided for storing an active ingredient such as a pesticide or other type of agricultural chemical in a water soluble package.
  • the active ingredient is incorporated in a storage formulation inciuding a hydrophilic, non-aqueous solvent which is capable of dissolving the active ingredient but not the water soluble package.
  • Acephate, O, S-dtmethyl acetylphosphoraamidothioate is an insecticide that is vulnerable to environmental moisture or moisture derived from the packaging material. Therefore, moisture resistant packaging of acephate or formulations containing acephate has been a long felt need in the art.
  • the FAO specifications for packing acephate stipulate that acephate must not contain more than 2 g/kg of water, as measured by MT. 30, CIPAC F, p.91. The specification further stipulates that typically the water content should be about 1.5 g/kg. It further states that as acephate technical is hygroscopic, care must be taken to package it in moisture- proof containers and store in dry locations.
  • the present invention provides an effective moisture barrier packaging system for acephate and for acephate containing agrochemical products.
  • an object of the present invention is to provide a moisture barrier packaging system for moisture sensitive agrochemicals.
  • Another object of the present invention is to provide a package for moisture sensitive agrochemicals mat ensures no interaction between the packaging material and the packaged material throughout the shelf life of the product
  • Another object of the present invention is to provide a moisture barrier package for acephate or acephate containing agrochemical products.
  • the present invention described hereinafter meets at least one, and preferably more than one, of the above mentioned objects of the invention.
  • a packaged moisture sensitive product comprising:
  • At least one secondary package capable of holding said primary package and being made of a composite laminate having a plurality of layers, said layers being selected from:
  • thermoplastic polymer selected from polyamideimide, polyethersuiphone, polyetherimide, poiyarylate, polysulphone, polyary!ate, polysulphone.
  • polyamide polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, potyetheretherketone, polytetrafluoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyf siloxane, polyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersuiphone, polyetherimide, and liquid crystal polymer;
  • thermoplastic polymer layers at least one metallic layer disposed between said thermoplastic polymer layers or deposited on at least one of said thermoplastic polymer layer;
  • thermoplastic polymer being selected from polyamideimide, polyethersuiphone, polyetherimide, poiyarylate, polysulphone, poiyarylate, polysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetrafluoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siloxane, polyoxymethylene, polycarbonate, poiyetheretherketone, nylon 6, polyphenytene sulphide, poiyethersuiphorte, polyetherimkJe, and liquid crystal polymer.
  • thermoplastic polymer being selected from polyamideimide, polyethersu
  • a method of packing a moisture sensitive product comprising:
  • thermoplastic polymer being selected from polyamideimide, polyethersulphone, polyetherimide, polyarylate, polysulphone, polyarylate.
  • polysulphone po!yamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, poiyetheretherketone, polytetrafluoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siioxane, polyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersulphone. polyetherimide, and liquid crystal polymer; and
  • thermoplastic polymer layers at least one metallic layer disposed between said thermoplastic polymer layers or deposited on at least one of said thermoplastic polymer layer;
  • thermoplastic polymer being selected from polyamideimide, polyethersulphone, polyetherimide, polyarylate, polysulphone, polyarylate, polysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetrafiuoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siioxane, polyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersulphone, polyetherimide, and liquid crystal polymer.
  • the present inventors have now found that the combination of at least one water soluble polymer layer, at least one first thermoplastic layer, at least one metallic layer and at least one second thermoplastic layer provides surprising mechanical strength to a package intended for a moisture sensitive agrochemical product along with providing the requisite moisture resistance to the packaged agrochemical. More surprisingly, it was found that the increased mechanical strength and the moisture resistance were prejudiced when any one of the water soluble polymer layer, or any of the thermoplastic layers or the metallic layer was absent from the packaging. It was unexpected that the described layers, in combination, provided surprising benefits to a packaged agrochemical product that was otherwise very sensitive to environmental moisture exposure.
  • the present invention provides a packaged moisture sensitive product, said packaged product comprising:
  • At least one secondary package capable of holding said primary package and being made of a composite laminate having a plurality of layers, said layers being selected from:
  • thermoplastic polymer selected from poiyamideimide, polyethersuiphone, polyetherimide, polyarylate, poiysulphone, polyarylate, polysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, poiytetrafluoroethylene, polyamide 6-6, polyamide 11, polyphenyiene sulphide, polyethylene terephthalate.
  • poiyoxymethylene polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siloxane, po!yoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersuiphone, polyetherimide, and liquid crystal polymer;
  • thermoplastic polymer layer at least one metallic layer disposed between said thermoplastic polymer layers or deposited on at least one of said thermoplastic polymer layer;
  • thermoplastic polymer being selected from polyamideimide, polyethersuiphone, polyetherimide, polyarylate, poiysuiphone, polyarylate, polysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetrafluoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, poiyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siloxane, poiyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersuiphone, polyetherimide, and liquid crystal polymer.
  • thermoplastic polymer being selected from polyamideimide, polyethersuiphone, polyether
  • the present invention also provides a method of packing a moisture sensitive product, said method comprising:
  • thermoplastic polymer selected from polyamideimide, polyethersulphone, polyetherimide, polyaryiate, polysulphone, polyarylate, polysulphone, poiyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetraf!uoroethylene, poiyamide 6-6, poiyamide 11, polyphenylene sulphide, polyethylene terephthafate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene.
  • polystyrene polymethylmethacrylate, polyvinyl chloride, natural rubber, po!ydimethy! siloxane, polyoxymethylene.
  • polycarbonate polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersuiphone, poiyetherimide, and liquid crystal polymer;
  • thermoplastic polymer layer at least one metallic layer disposed between said thermoplastic polymer layers or deposited on at least one of said thermoplastic polymer layer;
  • thermoplastic polymer being selected from polyamideimide, polyethersuiphone, poiyetherimide, polyarylate, polysulphone, polyaryiate, polysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitriie butadiene styrene, polystyrene, polyetheretherketone, polytetraftuoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, polyoxymethyfene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siloxane, poiyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersuiphone, poiyetherimide, and liquid crystal polymer.
  • thermoplastic polymer being selected from polyamideimide, polyethers
  • Both of these aspects may have several embodiments depending on the preferential selection of the water soluble polymer or either of the thermoplastic layers or of the metallic layer. These embodiments described hereinafter are non- limiting and are only intended to be the exemplary embodiments of the present invention.
  • the present invention provides a packaged moisture sensitive product, said packaged product comprising;
  • At least one secondary package capable of holding said primary package and being made of a composite laminate having a plurality of layers, said layers being selected from.
  • the present invention also provides a method of packing a moisture sensitive product, said method comprising:
  • the present invention provides a packaged moisture sensitive product, said packaged product comprising:
  • the seconday package is a trilaminated layer comprising 12 micron polyethylene terephthalate, followed by another layer of 12 micron polyethylene terephthalate, a 8 micron aluminium foil/layer, followed by a 100 micron low density polyethylene layer.
  • the present invention also provides a method of packing a moisture sensitive product, said method comprising:
  • the seconday package is a trilaminated layer comprising 12 micron polyethylene terephthalate, followed by another layer of 12 micron polyethylene terephthalate, a 8 micron aluminium foil/layer, followed by a 100 micron low density polyethylene layer.
  • the seconday package is a triiaminated layer comprising 12 micron polyethylene terephthalate, a 20 micron aluminium foil/layer, followed by a 85 micron low density polyethylene layer.
  • the present invention provides a packaged moisture sensitive product, said packaged product comprising:
  • ⁇ c ⁇ at least one secondary package capable of holding said primary package and being made of a composite laminate having a plurality of layers, said layers being selected from:
  • the present invention also provides a method of packing a moisture sensitive product said method comprising:
  • the moisture sensitive agrochemical product is a phosphoramidothioate insecticide selected from the group consisting of acephate, chloramine phosphorus, isocarbophos, isofenphos, isofenphos-methyi, methamidophos, phosglycin and propetamphos.
  • the moisture sensitive agrochemical product is acephate or a formulation comprising the same. in an embodiment, the moisture sensitive agrochemical product is acephate 97% dry flowable formulation.
  • the water soluble polymer layer is a water soluble pouch made up of polyvinyl alcohol.
  • the water soluble pouch is sealed on a plurality of sides, preferably sealed on two or three sides.
  • the water soluble layer Is selected with the following specifications, which were selected for packaging a 10 kg sample of acephate 97% DF formulation. These specifications are exemplary and are not to be construed as limiting the present invention.
  • the secondary packaging layer is a 4-layer composite layer comprising the following layers:
  • the secondary packaging is selected with the following specifications, which were selected for packaging a 10 kg sample of acephate 97% DF formulation. These specifications are exemplary and are not to be construed as limiting the scope of the invention in any manner.
  • Such composite laminates may be prepared as per the conventional processes known in the art.
  • such laminates may be prepared by compression moulding, extrusion coating, extrusion lamination, tandem extrusion lamination, chemical vapour deposition etc.
  • Such processes are commonly known in the art and are used for preparing the multi-layer laminates of the invention.
  • a plurality of such secondary packages, each of said secondary packages comprising acephate 97% DF placed inside the primary package were disposed within a tertiary packing, which comprises printed cartons.
  • the printed carton is laminated with BOPP film for additional moisture resistance.
  • the printed carton is laminated with 10 ⁇ BOPP film.
  • the printed carton is provided with at least one die cut handle provided for easy handling.
  • a plurality of such printed cartons are placed within a shipper packaging.
  • the moisture sensitive material which are capable of being packed within the packaging method of the present invention includes, but is not limited to, acephate; combination of acephate and buprofezin; and combination of acephate and imidacloprid and compositions comprising the same.
  • Fig. 1 demonstrates a water soluble pouch (1) made up of polyvinyl alcohol. The water soluble pouch (1) has been used for packaging a 10 kg sample (2) of acephate 97% OF formulation.
  • Fig. 2 demonstrates a secondary packaging layer (3) according to an exemplary embodiment of the present invention.
  • the secondary packaging layer (3) includes a 3-layer composite layer comprising PET (4), Al foil (5) and LDPE (6).
  • the tri-laminated pouch PET 24 ⁇ // Al foil (9 ⁇ ) // LDPE (100 ⁇ ) along with the primary packaging layer of PVA was used to pack acephate 97% DF formulation.
  • the package containing acephate 97% DF was then subjected to AHS study at 54°C.
  • AHS study is normally conducted for 14 days at an elevated temperature of 54°C, which according to standard guidelines, provides adequate data in certain circumstances to allow the regulatory authorities to make a regulatory finding regarding the stability of the product and the effect of the formulation on the product packaging.
  • the tri-laminated pouch PET (24 ⁇ ) // Al foil (9 ⁇ ) // LDPE (100 ⁇ ) along with the primary packaging layer of PVA was used to pack Acephate 97% OF formulation available from UPL Ltd.
  • the tri-laminate pouch was replaced with a laminate comprising polyethylene/EVOH layer without a metallic layer.
  • the acephate + imidacloprid formulation Lancer Gold® available from UPL Ltd, was tested for storage stability in a comparative high barrier film pouch made of 100 micron low density polyethylene. Thus, the test package was absent of the water soluble polymeric pouch, the thermoplastic layer and the metallized layer. The storage stability of the formulation was tested after AHS storage i.e. after 28 days at 54°c.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Ceramic Engineering (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Packages (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

A packaged moisture sensitive product and a method for packaging a moisture sensitive product. The packaging comprises a primary package, and a secondary 5 package comprising a composite laminate comprising at least one thermoplastic layer and at least one metallic layer.

Description

MOISTURE BARRIER PACKAGE
FIELD OF THE INVENTION:
The present invention relates to a moisture barrier package. More particularly, the present invention relates to a moisture barrier package for moisture sensitive agrochemicals.
BACKGROUND AND PRIOR ART:
An essential prerequisite for selecting a packaging for moisture sensitive agrochemicals is to ensure that there is no interaction between the packaging material and the packaged material throughout the shelf life of the product. The conventional formulation types for agrochemicals are wettable powders, water dispersible granules, dusting powders and granules. Polyethylene is used in agrochemical packaging because of its moisture barrier properties. However, polyethylene alone does not form a sufficient packaging for agrochemicals because of its poor mechanical strength.
Biaxially oriented polyester (PET) has been widely used for packaging of aqueous based products. However, its water vapour transmission rate is higher than that of polyethylene making it unsuitable for packaging moisture sensitive compounds.
US 2015 0274408, published on 1 October 2015, discloses an agriculturally active product including a volume of material including an agriculturally active ingredient (acephate), and a package having a package centroid, an interior region, and a distant portion positioned farthest away from the package centroid, the interior region having an interior region centroid and containing the volume of material, the interior region centroid being spaced apart from the package centroid by an offset distance, the distant portion being spaced apart from the package centroid by a farthest distance, a ratio of the offset distance to the farthest distance being greater than 0.10. PCT Publication No. WO 1992 017382, published on 15 October 1992, discloses a package containing an agrochemical which package comprises a first sheet of non-planar water soluble or water dispersible material and a second sheet of water soluble or water dispersible material superposed on the first sheet and sealed to it by a continuous closed water soluble or water dispersible seal along a continuous region of the superposed sheets. However, this package suffers from poor mechanical strength and often fails the drop test.
US 5,224,601, published on 6 July 1993, discloses a packaging system containing a pesticidal composition. The packaging system comprises a first sheet of non- planar water soluble or water dispersible material defining a concavity enclosing the pesticidal composition, a second sheet of water soluble or water dispersible materia! sealed to the first sheet by a continuous closed water soluble or water dispersible heat seal, and a third sheet between the first and second sheets and sealed thereto by a water soluble or water dispersible seal to divide the package into two compartments.
CA 2 285 202, published on 2 September 1999, discloses a system and method provided for storing an active ingredient such as a pesticide or other type of agricultural chemical in a water soluble package. The active ingredient is incorporated in a storage formulation inciuding a hydrophilic, non-aqueous solvent which is capable of dissolving the active ingredient but not the water soluble package. Acephate, O, S-dtmethyl acetylphosphoraamidothioate, is an insecticide that is vulnerable to environmental moisture or moisture derived from the packaging material. Therefore, moisture resistant packaging of acephate or formulations containing acephate has been a long felt need in the art. The FAO specifications for packing acephate stipulate that acephate must not contain more than 2 g/kg of water, as measured by MT. 30, CIPAC F, p.91. The specification further stipulates that typically the water content should be about 1.5 g/kg. It further states that as acephate technical is hygroscopic, care must be taken to package it in moisture- proof containers and store in dry locations.
The present invention provides an effective moisture barrier packaging system for acephate and for acephate containing agrochemical products.
OBJECTS OF THE INVENTION:
Therefore, an object of the present invention is to provide a moisture barrier packaging system for moisture sensitive agrochemicals.
Another object of the present invention is to provide a package for moisture sensitive agrochemicals mat ensures no interaction between the packaging material and the packaged material throughout the shelf life of the product Another object of the present invention is to provide a moisture barrier package for acephate or acephate containing agrochemical products.
The present invention described hereinafter meets at least one, and preferably more than one, of the above mentioned objects of the invention.
SUMMARY OF THE INVENTION:
A packaged moisture sensitive product, said packaged product comprising:
(a) at least one moisture sensitive product;
(b) at least one primary package containing said moisture sensitive product, said primary package being a water soluble pouch made of a water soluble polymer selected from polyethylene glycol or a block copolymer comprising polyethylene glycol selected from copolymers with polypropylene oxide, copolymers with polyethylene butylene, and copolymers with polycaprolactone; polyvinylpyrrolidone; polyvinyl alcohol; polyacrylic acid; polyacry!amides; N-(2-hydroxypropyl) methacrylamide; divinyl ether-maleic anhydride; polyoxazoline; polyphosphates; polyphosphazenes; xanthan gums; pectins; chitosan derivatives; dextran; carrageenan; guar gum; cellulose ethers selected from hydroxypropyt methylcellufose, hydroxypropyl cellulose, hydroxyethyl cellulose, and sodium carboxy-methyl cellulose; and starch or starch derivatives;
(c) at least one secondary package capable of holding said primary package and being made of a composite laminate having a plurality of layers, said layers being selected from:
(i) at least one first layer of a thermoplastic polymer, said thermoplastic polymer being selected from polyamideimide, polyethersuiphone, polyetherimide, poiyarylate, polysulphone, polyary!ate, polysulphone. polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, potyetheretherketone, polytetrafluoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyf siloxane, polyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersuiphone, polyetherimide, and liquid crystal polymer;
(ii) at least one metallic layer disposed between said thermoplastic polymer layers or deposited on at least one of said thermoplastic polymer layer; and
(iii) at least one second layer of a thermoplastic polymer, said thermoplastic polymer being selected from polyamideimide, polyethersuiphone, polyetherimide, poiyarylate, polysulphone, poiyarylate, polysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetrafluoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siloxane, polyoxymethylene, polycarbonate, poiyetheretherketone, nylon 6, polyphenytene sulphide, poiyethersuiphorte, polyetherimkJe, and liquid crystal polymer.
A method of packing a moisture sensitive product, said method comprising:
(a) placing said moisture sensitive product within a first primary package, said primary package being a water soluble pouch made of a water soluble polymer selected from polyethylene glycol or a block copolymer comprising polyethylene glycol selected from copolymers with polypropylene oxide, copolymers with polyethylene butyiene, and copolymers with pofycaprolactone; polyvinylpyrrolidone; polyvinyl alcohol; polyacrylic acid; polyacryiamides; N-(2-hydroxypropyl) methacry!amide; divinyl ether-maieic anhydride; poiyoxazoline; polyphosphates; pofyphosphazenes; xanthan gums; pectins; chitosan derivatives; dextran; carrageenan; guar gum; cellulose ethers selected from hydroxypropyl methylcellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, and sodium carboxy-methyl cellulose; and starch or starch derivatives;
(b) placihg said primary package in a secondary package capable of holding said moisture sensitive agrochemicai product contained within said primary package, said secondary package being made of a composite laminate having a plurality of layers, said layers being selected from:
(i) at least one first layer of a thermoplastic polymer, said thermoplastic polymer being selected from polyamideimide, polyethersulphone, polyetherimide, polyarylate, polysulphone, polyarylate. polysulphone, po!yamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, poiyetheretherketone, polytetrafluoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siioxane, polyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersulphone. polyetherimide, and liquid crystal polymer; and
(ii) at least one metallic layer disposed between said thermoplastic polymer layers or deposited on at least one of said thermoplastic polymer layer; and
(iii) at least one second layer of a thermoplastic polymer, said thermoplastic polymer being selected from polyamideimide, polyethersulphone, polyetherimide, polyarylate, polysulphone, polyarylate, polysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetrafiuoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siioxane, polyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersulphone, polyetherimide, and liquid crystal polymer.
DETAILED DESCRIPTION OF THE INVENTION:
Surprisingly, the present inventors have now found that the combination of at least one water soluble polymer layer, at least one first thermoplastic layer, at least one metallic layer and at least one second thermoplastic layer provides surprising mechanical strength to a package intended for a moisture sensitive agrochemical product along with providing the requisite moisture resistance to the packaged agrochemical. More surprisingly, it was found that the increased mechanical strength and the moisture resistance were prejudiced when any one of the water soluble polymer layer, or any of the thermoplastic layers or the metallic layer was absent from the packaging. It was unexpected that the described layers, in combination, provided surprising benefits to a packaged agrochemical product that was otherwise very sensitive to environmental moisture exposure.
Therefore, in an aspect, the present invention provides a packaged moisture sensitive product, said packaged product comprising:
(a) at least one moisture sensitive product;
(b) at least one primary package containing said moisture sensitive product, said primary package being a water soluble pouch made of a water soluble polymer selected from polyethylene glycol or a block copolymer comprising polyethylene glycol selected from copolymers with polypropylene oxide, copolymers with polyethylene butylene, and copolymers with polycaprolactone; polyvinylpyrrolidone; polyvinyl alcohol; polyacrylic acid; polyacrylamides; N-(2- hydroxypropyl) methacrylamtde; divinyl ether-maleic anhydride; polyoxazoline; polyphosphates; polyphosphazenes; xanthan gums; pectins; chitosan derivatives; dextran; carrageenan; guar gum; cellulose ethers selected from hydroxypropyl metnylcetlulose, hydroxypropyl cellulose, hydroxyethyl cellulose, and sodium carboxy-methyl cellulose; and starch or starch derivatives;
(c) at least one secondary package capable of holding said primary package and being made of a composite laminate having a plurality of layers, said layers being selected from:
(I) at least one first layer of a thermoplastic polymer, said thermoplastic polymer being selected from poiyamideimide, polyethersuiphone, polyetherimide, polyarylate, poiysulphone, polyarylate, polysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, poiytetrafluoroethylene, polyamide 6-6, polyamide 11, polyphenyiene sulphide, polyethylene terephthalate. poiyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siloxane, po!yoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersuiphone, polyetherimide, and liquid crystal polymer;
(II) at least one metallic layer disposed between said thermoplastic polymer layers or deposited on at least one of said thermoplastic polymer layer; and
(III) at least one second layer of a thermoplastic polymer, said thermoplastic polymer being selected from polyamideimide, polyethersuiphone, polyetherimide, polyarylate, poiysuiphone, polyarylate, polysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetrafluoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, poiyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siloxane, poiyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersuiphone, polyetherimide, and liquid crystal polymer.
In another aspect, the present invention also provides a method of packing a moisture sensitive product, said method comprising:
(a) placing said moisture sensitive product within a first primary package, said primary package being a water soluble pouch made of a water soluble polymer selected from polyethylene glycol or a block copolymer comprising polyethylene glycol selected from copolymers with polypropylene oxide, copolymers with polyethylene butylene, and copolymers with po!ycaprolactone; polyvinylpyrrolidone; polyvinyl alcohol; polyacrylfc acid; po!yacrylamides; N-(2-hydroxypropyi) methacrylamide; drvinyl ether-maleic anhydride; poiyoxazoline; polyphosphates; polyphosphazenes; xanthan gums; pectins; chitosan derivatives; dextran; carrageenan; guar gum; cellulose ethers selected from hydroxypropyl methylceilulose, hydroxypropyl cellulose, hydroxyethyl cellulose, and sodium carboxy-methyt cellulose; and starch or starch derivatives;
(b) placing said primary package in a secondary package capable of holding said moisture sensitive agrochemical product contained within said primary package, said secondary package being made of a composite laminate having a plurality of layers, said layers being selected from:
(I) at least one first layer of a thermoplastic polymer, said thermoplastic polymer being selected from polyamideimide, polyethersulphone, polyetherimide, polyaryiate, polysulphone, polyarylate, polysulphone, poiyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetraf!uoroethylene, poiyamide 6-6, poiyamide 11, polyphenylene sulphide, polyethylene terephthafate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene. polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, po!ydimethy! siloxane, polyoxymethylene. polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersuiphone, poiyetherimide, and liquid crystal polymer;
(II ) at least one metallic layer disposed between said thermoplastic polymer layers or deposited on at least one of said thermoplastic polymer layer; and
(III) at least one second layer of a thermoplastic polymer, said thermoplastic polymer being selected from polyamideimide, polyethersuiphone, poiyetherimide, polyarylate, polysulphone, polyaryiate, polysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitriie butadiene styrene, polystyrene, polyetheretherketone, polytetraftuoroethylene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, polyoxymethyfene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siloxane, poiyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersuiphone, poiyetherimide, and liquid crystal polymer.
Both of these aspects may have several embodiments depending on the preferential selection of the water soluble polymer or either of the thermoplastic layers or of the metallic layer. These embodiments described hereinafter are non- limiting and are only intended to be the exemplary embodiments of the present invention.
Therefore, in an embodiment, the present invention provides a packaged moisture sensitive product, said packaged product comprising;
(a) at least one moisture sensitive product; (b) at least one primary package containing said moisture sensitive product, said primary package being a water soluble pouch made of polyvinyl alcohol;
(c) at least one secondary package capable of holding said primary package and being made of a composite laminate having a plurality of layers, said layers being selected from.
(i) at least one first layer of polyethylene terephthalate;
(ii) at least one aluminium layer disposed between polyethylene terephthalate layers or deposited on at least one of said polyethylene terephthalate layer; and
(iii) at least one second layer of polyethylene terephthalate.
In another embodiment, the present invention also provides a method of packing a moisture sensitive product, said method comprising:
(a) placing said moisture sensitive product within a first primary package, said primary package being a water soluble pouch made of polyvinyl alcohol;
(b) placing said primary package in a secondary package capable of holding said moisture sensitive agrochemical product contained within said primary package, said secondary package being made of a composite laminate having a plurality of layers, said layers being selected from:
(i) at least one first layer of polyethylene terephthalate;
(ii) at least one aluminium layer disposed between polyethylene terephthalate layers or deposited on at least one of said polyethylene terephthalate layer; and
(iii) at least one second layer of polyethylene terephthalate.
In another embodiment, the present invention provides a packaged moisture sensitive product, said packaged product comprising:
(a) at least one moisture sensitive product;
(b) at least one primary package containing said moisture sensitive product, said primary package being a water soluble pouch made of polyvinyl alcohol; (c) at least one secondary package capable of holding said primary package and being made of a composite laminate having a plurality of layers, said layers being selected from:
(i) at least one first layer of polyethylene terephthalate;
(ii) at least another second layer of polyethylene terephthalate;
(iii) at least one aluminium layer disposed between polyethylene terephthalate layers or deposited on at least one of said polyethylene terephthalate layer; and
(iv) at least one layer of low density polyethylene.
In a preferred embodiment, the seconday package is a trilaminated layer comprising 12 micron polyethylene terephthalate, followed by another layer of 12 micron polyethylene terephthalate, a 8 micron aluminium foil/layer, followed by a 100 micron low density polyethylene layer. in another embodiment, the present invention also provides a method of packing a moisture sensitive product, said method comprising:
(a) placing said moisture sensitive product within a first primary package, said primary package being a water soluble pouch made of polyvinyl alcohol;
(b) placing said primary package in a secondary package capable of holding said moisture sensitive agrochemica! product contained within said primary package, said secondary package being made of a composite laminate having a plurality of layers, said layers being selected from:
(i) at least one first layer of polyethylene terephthalate;
(ii) at least another second layer of polyethylene terephthalate;
(iii) at least one aluminium layer disposed between polyethylene terephthalate layers or deposited on at least one of said polyethylene terephthalate layer; and
(iv) at least one layer of low density polyethylene. (n a preferred embodiment, the seconday package is a trilaminated layer comprising 12 micron polyethylene terephthalate, followed by another layer of 12 micron polyethylene terephthalate, a 8 micron aluminium foil/layer, followed by a 100 micron low density polyethylene layer.
In another embodiment, the seconday package is a triiaminated layer comprising 12 micron polyethylene terephthalate, a 20 micron aluminium foil/layer, followed by a 85 micron low density polyethylene layer. Thus, in another embodiment, the present invention provides a packaged moisture sensitive product, said packaged product comprising:
(a) at least one moisture sensitive product;
(b) at least one primary package containing said moisture sensitive product, said primary package being a water soluble pouch made of polyvinyl alcohol;
{c} at least one secondary package capable of holding said primary package and being made of a composite laminate having a plurality of layers, said layers being selected from:
(i) at least one layer of polyethylene terephthalate;
(it) at least one aluminium layer disposed between polyethylene terephthalate layers or deposited on at least one of said polyethylene terephthalate layer; and (iii) at least one layer of low density polyethylene. in another embodiment, the present invention also provides a method of packing a moisture sensitive product said method comprising:
(a) placing said moisture sensitive product within a first primary package, said primary package being a water soluble pouch made of polyvinyl alcohol; (fa) placing said primary package in a secondary package capable of holding said moisture sensitive agrochemicai product contained within said primary package, said secondary package being made of a composite laminate having a plurality of layers, said layers being selected from: (I) at least one layer of polyethylene terephthaiate;
(II) at least one aluminium layer disposed between polyethylene terephthaiate layers or deposited on at least one of said polyethylene terephthaiate layer; and
(iii) at least one layer of low density polyethylene.
In an embodiment, the moisture sensitive agrochemical product is a phosphoramidothioate insecticide selected from the group consisting of acephate, chloramine phosphorus, isocarbophos, isofenphos, isofenphos-methyi, methamidophos, phosglycin and propetamphos.
In another embodiment, the moisture sensitive agrochemical product is acephate or a formulation comprising the same. in an embodiment, the moisture sensitive agrochemical product is acephate 97% dry flowable formulation.
Thus, a moisture resistant packaging for 10 kg acephate 97% dry flowable formulation was prepared. A description of the preferred embodiments follows hereinafter, which is not to be considered as limiting.
In an embodiment, the water soluble polymer layer is a water soluble pouch made up of polyvinyl alcohol. In an embodiment, the water soluble pouch is sealed on a plurality of sides, preferably sealed on two or three sides.
In an exemplary embodiment, the water soluble layer Is selected with the following specifications, which were selected for packaging a 10 kg sample of acephate 97% DF formulation. These specifications are exemplary and are not to be construed as limiting the present invention.
Figure imgf000017_0001
In an embodiment, the secondary packaging layer is a 4-layer composite layer comprising the following layers:
Printed PET (12 μ) // PET (12 μ) // Al foil (9 μ) // LDPE (100 μ)
In an exemplary embodiment, the secondary packaging is selected with the following specifications, which were selected for packaging a 10 kg sample of acephate 97% DF formulation. These specifications are exemplary and are not to be construed as limiting the scope of the invention in any manner.
Figure imgf000018_0001
Figure imgf000019_0001
The process for preparing such composite laminates is not particularly limiting, and these laminates may be prepared as per the conventional processes known in the art. For example, such laminates may be prepared by compression moulding, extrusion coating, extrusion lamination, tandem extrusion lamination, chemical vapour deposition etc. Such processes are commonly known in the art and are used for preparing the multi-layer laminates of the invention. in an embodiment, a plurality of such secondary packages, each of said secondary packages comprising acephate 97% DF placed inside the primary package, were disposed within a tertiary packing, which comprises printed cartons.
In an embodiment, the printed carton is laminated with BOPP film for additional moisture resistance.
In a preferred embodiment, the printed carton is laminated with 10 μ BOPP film.
In an embodiment, the printed carton is provided with at least one die cut handle provided for easy handling.
In an embodiment, a plurality of such printed cartons are placed within a shipper packaging.
In an embodiment, the moisture sensitive material which are capable of being packed within the packaging method of the present invention includes, but is not limited to, acephate; combination of acephate and buprofezin; and combination of acephate and imidacloprid and compositions comprising the same. Fig. 1 demonstrates a water soluble pouch (1) made up of polyvinyl alcohol. The water soluble pouch (1) has been used for packaging a 10 kg sample (2) of acephate 97% OF formulation.
Fig. 2 demonstrates a secondary packaging layer (3) according to an exemplary embodiment of the present invention. The secondary packaging layer (3) includes a 3-layer composite layer comprising PET (4), Al foil (5) and LDPE (6).
Example 1
The tri-laminated pouch PET (24 μ) // Al foil (9 μ) // LDPE (100 μ) along with the primary packaging layer of PVA was used to pack acephate 97% DF formulation. The package containing acephate 97% DF was then subjected to AHS study at 54°C.
Figure imgf000020_0001
Figure imgf000021_0001
It was thus found that the packaged sample complied with the specifications up to 28 days in AHS study. AHS study is normally conducted for 14 days at an elevated temperature of 54°C, which according to standard guidelines, provides adequate data in certain circumstances to allow the regulatory authorities to make a regulatory finding regarding the stability of the product and the effect of the formulation on the product packaging.
Comparative Example 2:
The tri-laminated pouch PET (24 μ) // Al foil (9 μ) // LDPE (100 μ) along with the primary packaging layer of PVA was used to pack Acephate 97% OF formulation available from UPL Ltd. In the comparative sample, the tri-laminate pouch was replaced with a laminate comprising polyethylene/EVOH layer without a metallic layer.
Figure imgf000021_0002
Figure imgf000022_0001
It was found that there was 0.84% reduction in the percentage active ingredient of acephate in the PE/EvOH (Ethylene Vinyl Alcohol) pouch, whereas Only about 0.43% degradation in acephate content in the tri-laminated pouch of the invention. The PE/EvOH pouch, without the metallic layer, also led to highly corrosive smell generated in the pouch.
Comparative Example 3
The acephate + imidacloprid formulation Lancer Gold®, available from UPL Ltd, was tested for storage stability in a comparative high barrier film pouch made of 100 micron low density polyethylene. Thus, the test package was absent of the water soluble polymeric pouch, the thermoplastic layer and the metallized layer. The storage stability of the formulation was tested after AHS storage i.e. after 28 days at 54°c.
Figure imgf000023_0001
Thus, it was found that in the absence of the secondary package and the water soluble polymer of the present invention, acephate content of Lancer Gold <8> degraded by 2.90% after 28 days, and the imidacioprid content degraded by 33.5% when packed in high barrier film pouch of 100 micron LDPE. A highly corrosive smell was also generated in the pouch. A packaging method and the packaged product according to the present invention was required to pack acephate or acephate containing formulation. While the foregoing written description of the invention enables one of ordinary skill to make and use what is considered presently to be the best mode thereof, those of ordinary skill will understand and appreciate the existence of variations, combinations, and equivalents of the specific embodiment, method, and examples herein. The invention should therefore not be limited by the above described embodiment, method, and examples, but by all embodiments and methods within the scope and spirit of the invention.

Claims

1. A packaged moisture sensitive product, said packaged product comprising:
(a) at least one moisture sensitive product;
(b) at least one primary package containing said moisture sensitive product, said primary package being a water soluble pouch made of a water soluble polymer selected from polyethylene glycol or a block copolymer comprising polyethylene glycol selected from copolymers with polypropylene oxide, copolymers with polyethylene butylene, and copolymers with polycaprolactone; polyvinylpyrrolidone; polyvinyl alcohol; poiyacryitc acid; po!yacryiamides; N-(2- hydroxypropyl) methacrylamide; divinyl ether-maletc anhydride; polyoxazoline; polyphosphates; polyphosphazenes; xanthan gums; pectins; chitosan derivatives; dextran; carrageenan; guar gum; cellulose ethers selected from hydroxypropyl methylce!lulose, hydroxypropyl cellulose, hydroxyethyl cellulose, and sodium carboxy-methyl cellulose; and starch or starch derivatives;
(c) at least one secondary package capable of holding said primary package and being made of a composite laminate having a plurality of layers, said layers being selected from:
at least one first layer of a thermoplastic polymer, said thermoplastic polymer being selected from polyamideimide, polyethersulphone, polyetherimide. pofyarylate, poiysulphone, polyarylate, poiysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetrafluoroethylene, polyamide 6-6, polyamide 11, polyphenyiene sulphide, polyethylene terephthalate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siloxane, polyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersulphone, polyethenmide, and liquid crystal polymer;
at least one metallic layer disposed between said thermoplastic polymer layers or deposited on at least one of said thermoplastic polymer layer; and
at least one second layer of a thermoplastic polymer, said thermoplastic polymer being selected from polyamideimide, polyethersulphone, polyethenmide, polyarylate, polysulphone, polyarylate, polysulphone, polyamtde, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetraftuoroethylene, poiyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthalate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethy) siloxane, polyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersulphone, polyethenmide, and liquid crystal polymer.
2. The packaged product as claimed in claim 1, wherein*.
said primary package is a water soluble pouch made of polyvinyl alcohol;
said secondary package is a composite laminate having a plurality of layers, said layers being:
at least one first layer of polyethylene terephthalate;
at least one aluminium layer disposed between polyethylene terephthalate layers or deposited on at least one of said polyethylene terephthalate layer; and
at least one second layer of polyethylene terephthalate.
3. The packaged product as claimed in claim 1 , wherein:
said primary package is a water soluble pouch made of polyvinyl alcohol;
said secondary package is a composite laminate having a plurality of layers, said layers being:
at least one first layer of polyethylene terephthalate;
at least another second layer of polyethylene terephthalate; at least one aluminium layer disposed between polyethylene terephthalate layers or deposited on at least one of said polyethylene terephthalate layer; and
at feast one layer of low density polyethylene.
4. The packged product as claimed in claim 3, wherein the moisture sensitive agrochemical product is a phosphoramtdothioate insecticide selected from fiie group consisting of acephate, chloramine phosphorus, isocarbophos, isofenphos, isofenphos-methyl, methamidophos, phosglycin and propetamphos or a formulation thereof.
5. The packaged product as claimed in claim 4, wherein the moisture sensitive agrochemical product is acephate or a formulation thereof.
6. The packaged product as claimed in claim 5, wherein the moisture sensitive agrochemical product is acephate 97% dry flowable formulation or acephate 50% + imidadoprid 1.8% SP formulation.
7. A method of packing a moisture sensitive product, said method comprising:
placing said moisture sensitive product within a first primary package, said primary package being a water soluble pouch made of a water soluble polymer selected from polyethylene glycol or a block copolymer comprising polyethylene glycol selected from copolymers with polypropylene oxide, copolymers with polyethylene butylene, and copolymers with poiycaprolactone; polyvinylpyrrolidone; polyvinyl alcohol; polyacrylic acid; polyacrylamides, N-(2-hydroxypropyl) methacryiamide; divinyl ether-maleic anhydride; polyoxazoline; polyphosphates; potyphosphazenes; xanthan gums; pectins; chitosan derivatives; dextran; carrageenan; guar gum; cellulose ethers selected from hydroxypropyl methylcel!ulose, hydroxypropyl cellulose, hydroxyethyl cellulose, and sodium carboxy-methyl cellulose; and starch or starch derivative;
placing said primary package in a secondary package capable of holding said moisture sensitive agrochemical product contained within said primary package, said secondary package being made of a composite laminate having a plurality of layers, said layers being selected from:
at least one first layer of a thermoplastic polymer, said thermoplastic polymer being selected from polyamideimtde, polyethersulphone, polyetherimide, polyarylate, polysulphone, polyarylate, polysulphone, polyamide. polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetrafluoroethyiene, polyamide 6-6, polyamide 11, polyphenylene sulphide, polyethylene terephthaiate, polyoxymethylene, polypropylene, high density polyethylene, low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyl siloxane, polyoxymethylene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersulphone, polyetherimide, and liquid crystal polymer; at least one metallic layer disposed between said thermoplastic polymer layers or deposited on at least one of said thermoplastic polymer layer; and
at least one second layer of a thermoplastic polymer, said thermoplastic polymer being selected from polyamideimide, polyethersulphone, polyetherimide, polyarylate, polysulphone, polyarylate, polysulphone, polyamide, polymethylmethacrylate, polyvinyl chloride, acrylonitrile butadiene styrene, polystyrene, polyetheretherketone, polytetrafluoroethytene. polyamide 6-6, polyamide 11 , polyphenylene sulphide, polyethylene terephthalate, polyoxymethyfene, polypropylene, high density polyethylene. low density polyethylene, polypropylene, polystyrene, polymethylmethacrylate, polyvinyl chloride, natural rubber, polydimethyi siioxane, polyoxymethyfene, polycarbonate, polyetheretherketone, nylon 6, polyphenylene sulphide, polyethersulphone, polyetherimide, and liquid crystal polymer.
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CU20190059A7 (en) 2020-02-04
BR112019012702B1 (en) 2023-03-28
MX2019007282A (en) 2019-08-16
AU2017380834A1 (en) 2019-07-11
US11634272B2 (en) 2023-04-25
CN110088011A (en) 2019-08-02
BR112019012702A2 (en) 2020-03-03
JP2020501997A (en) 2020-01-23

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