WO2012117416A1 - Laque à base d'huile naturelle, aqueuse, non plastique et biodégradable, pour un emballage flexible de qualité alimentaire - Google Patents

Laque à base d'huile naturelle, aqueuse, non plastique et biodégradable, pour un emballage flexible de qualité alimentaire Download PDF

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Publication number
WO2012117416A1
WO2012117416A1 PCT/IN2011/000287 IN2011000287W WO2012117416A1 WO 2012117416 A1 WO2012117416 A1 WO 2012117416A1 IN 2011000287 W IN2011000287 W IN 2011000287W WO 2012117416 A1 WO2012117416 A1 WO 2012117416A1
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Prior art keywords
packaging material
per square
grams per
square meter
natural oil
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Ceased
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PCT/IN2011/000287
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English (en)
Inventor
Puja Jain
Sandeep Jain
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ROIDEC INDIA CHEMICALS (P) Ltd
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ROIDEC INDIA CHEMICALS (P) Ltd
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Publication of WO2012117416A1 publication Critical patent/WO2012117416A1/fr
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Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
    • C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
    • C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/36—Hydroxylated esters of higher fatty acids
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/02—Synthetic cellulose fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/02—Synthetic cellulose fibres
    • D21H13/08—Synthetic cellulose fibres from regenerated cellulose
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/57—Polyureas; Polyurethanes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2230/00—Compositions for preparing biodegradable polymers

Definitions

  • This invention relates to an aqueous natural oil based lacquer for food grade flexible packaging, developed by using a carrier comprising of the combination of non-plastic substrate and paper, and coated with a natural oil based poly-urethane dispersion disclosed herein.
  • This packaging material is non-plastic and biodegradable, and possesses properties such as moisture resistance, heat sealability and durability. Such properties make the packaging material waterproof, long lasting, environment friendly, user friendly and widely applicable in industry.
  • the flexible packaging material can be used for various goods, without any restriction/limitation of shape, size or nature of the goods.
  • the most common substrate/carrier used for producing packaging materials is VMCH resin, aluminum or any other conventional plastics/plastic polymers to achieve properties of moisture barrier, heat sealing and other chemical properties.
  • VMCH resin any other conventional plastics/plastic polymers to achieve properties of moisture barrier, heat sealing and other chemical properties.
  • water-based anionic polyurethane-urea polymers are useful. References describing such include the following: 1. UK Pat. No. 1 ,128,568 (Farbenfabriken Bayer Aktiengesellschaft) discloses a laminating adhesive wherein anionic polyesteramide polyols are used in the preparation of water-based sulfonated/carboxylated polyurethane-urea polymers. The NCO-terminated prepolymers are processed with acetone. 2. U.S. Pat. No.
  • 5,334,690 discloses a water- based sulfonated/carboxylated polyurethane-urea adhesive, wherein the anionic groups are present in the polyol segment.
  • the solvent-less prepolymers are processed at temperatures greater than 120° C. C. 3.
  • U.S. Pat No. 4,851,459 and U.S. Pat No. 4,883,694 disclose high performance water dispersible polyurethane laminating adhesives wherein the NCO-terminated prepolymers are dispersed in water and chain extended with peroxides containing hydrogen active atoms.
  • a tertiary amine is added to neutralize the anionic prepolymer.
  • the prior art teachings disclose water-based anionic polyurethane-urea laminating adhesives processed with volatile and/or leachable contaminants. Contaminants such as cosolvents, urethane catalysts and Organic chain terminators can be detrimental.
  • Elevated temperatures can increase the prepolymer's crosslink density through uncontrolled isocyartate side reactions.
  • isocyanates react with the NH group of urethanes, ureas and amides at 100°C to 140°C to form allophanates, biurets and acyl ureas, respectively.
  • Polymer composition can also increase the adhesive's heat activation temperature.
  • the fundamental objective of this invention is to disclose a nori-plastic and biodegradable aqueous natural oil based lacquer for food grade flexible packaging material, which can be widely used in industry due to the materials used to produce it and its superior properties/characteristics.
  • Yet another objective of this invention is to produce a packaging material, which uses a carrier comprising of the combination of 100% viscose non woven and paper rather than the conventional plastics/plastic polymers and other substrates used in prior art.
  • Another objective of this invention is to produce a packaging material, in which, no VMCH resin, aluminum or any other conventional plastics/plastic polymers is used to achieve properties of moisture barrier, heat sealing and other chemical properties.
  • Yet another objective of this invention is to disclose a packaging material, which can be produced in an efficient and economical manner.
  • Another objective of this invention is to disclose a packaging material, which can be widely used in industry. Additionally, the objective of this invention is to disclose a packaging material, which possesses properties of being waterproof, durable, long lasting, environment friendly, user friendly and capable of sealing heat.
  • the packaging material disclosed herein uses a substrate/carrier, which is a combination of 100% viscose non woven and paper.
  • the 100% viscose non woven and paper, used in this invention as substrate/carrier has a thickness of around 25 grams per square meter to 75 grams per square meter.
  • the coating used to achieve bonding with the substrate/carrier is a natural oil
  • the natural oil based poly-urethane dispersion is produced as a result of a reaction product of a polyol component and a polyisocyanate component, at a reduced temperature, which is then dispersed in solvent-free water after applying a neutralizing agent, and then reacted with a chain extender, iii the manner described below.
  • the polymer-polyol blend used in the natural oil based poly-urethane dispersion includes a mixture of ricinoleated natural ester based mono blocked polyol and a carboxylic group-containing polyols.
  • Ricinoleated natural ester based mono blocked polyol is prepared by way of a multi-step process, without using the system of alcoholysis for deriving the blocked natural ester oil.
  • natural oils used include plant-based oils (e.g., vegetable oils) and animal fats.
  • Useful natural oil sources include canola oil, tall oil, soybean oil, safflower oil, linseed oil, Castor oil, corn oil, sunflower oil, olive oil, canola oil, sesame oil, cottonseed oil, palm-based oils, rapeseed oil, tung oil, peanut oil, jatropha oil, and combinations thereof.
  • Animal fats may also be used, for example, fish oil, lard, and tallow.
  • the plant-based oils may be natural or genetically modified vegetable oils, for example, high oleic safflower oil, high oleic soybean oil, high oleic canola oil, high oleic peanut oil, high oleic sunflower oil, and high erucic rapeseed oil (crafnbe oil). Also included are microbial oils, such as algal oil, including those that are genetically modified to increase yields and/or to obtain selective fatty acid distributions.
  • vegetable oils for example, high oleic safflower oil, high oleic soybean oil, high oleic canola oil, high oleic peanut oil, high oleic sunflower oil, and high erucic rapeseed oil (crafnbe oil).
  • microbial oils such as algal oil, including those that are genetically modified to increase yields and/or to obtain selective fatty acid distributions.
  • the ricinoleated natural ester based mono blocked polyol constitutes up to about 95% by weight of the total weight of the polyol formulation of the natural oil based poly-urethane dispersion.
  • the carboxylic group-containing polyols used in the natural oil based poly- urethane dispersion are advantageously dihydroxy materials.
  • the carboxylic group-containing polyol can be reacted, without any significant reaction between the carboxylic groups and the diisocyanate component.
  • the polyols which may be employed are those which have relatively unreactive free carboxylic acid groups, for instance, the alkanoic acids having one or two substituents on the alpha carbon atom.
  • the substituent may be, for example, a hydroxyl or alkyl group, for example, an alkylol group.
  • This component of the polyol composition has at least one carboxylic group, and generally has 1 to about 3 carboxylic groups, per molecule.
  • the polyols which may conveniently be employed in accordance with this invention frequently have about 2 to 20, or more, preferably about 2 to 10, carbon atoms such as tartaric acid, the ⁇ , ⁇ -dialkylol alkanoic acids, e.g., having alkylol groups of about 1 to 3 carbon atoms, and the like.
  • a preferred group are the ⁇ , ⁇ -dimethylol alkanoic acids.
  • the ⁇ , ⁇ -dimethylol alkanoic acids which may be employed in accordance with this invention include 2,2-dimethylol acetic acid, 2,2-dimethylol propionic acid, 2,2-dimethylol butyric acid, 2,2- dimethylol pentanoic acid, and the like.
  • the carboxylic group-containing polyol may frequently provide about 5% to 50% b weight of the total polyol component in the prepolymer.
  • the polyisocyante component used in the preparation of the Water dispersible NCO-terminated polyurethane prepolymer is an isomer of toluene diisocyanate and methylene diphenyl diisocyanate.
  • the ratio of the polyisocyanate component to the polyol component can be 1 :4, and is most preferably 1 :2.
  • the NCO-terminated prepolymer of the natural oil based poly-ur ethane dispersion is prepared by reacting a stoichiometric excess of the said polyisocyante component with the said polyol component.
  • the materials are processed at temperatures ranging from about 10°C to about 100°C, and preferably from about 40° C. to about 100° C.
  • the reactants are in such proportions that the resulting percent isocyanate is in a range from about 20% to 40% by weight of the total prepolymer solids.
  • the prepolymer may be optionally prepared in the presence of solvent, provided that the solvent is substantially non-reactive in the context of the isocyanate-polyol reaction.
  • the solvents are preferably organic and may be comprised essentially of carbon and hydrogen with or without other elements such as oxygen or nitrogen.
  • Solvents which may be employed include dimethylformamide, esters, ethers, ketoesters, ketones, e.g., methyl ethyl ketone and acetone, glycolether-esters, chlorinated hydrocarbons, aliphatic and alicyclic hydrocarbon-substituted pyrrolidinbnes, e.g., N-methyl-2-pyrrolidinone, hydrogenated furans, aromatic hydrocarbons, and the like, and mixtures thereof.
  • dimethylformamide esters, ethers, ketoesters, ketones, e.g., methyl ethyl ketone and acetone
  • glycolether-esters glycolether-esters
  • chlorinated hydrocarbons aliphatic and alicyclic hydrocarbon-substituted pyrrolidinbnes, e.g., N-methyl-2-pyrrolidinone, hydrogenated furans, aromatic hydrocarbons, and the like, and mixtures thereof.
  • the amount of solvent employed should be sufficient to provide a prepolymer solution, which has a sufficiently low viscosity to enhance the formation of the polyurethane-urea dispersion of this invention.
  • the solutions may be successfully employed in forming the dispersion of this invention, even though the viscosity of the solution is relatively high at the temperature of dispersion. Often about 0.01 to 10 parts by weight of solvent per part by weight of the prepolymer can be used.
  • the solvent which is to be removed from the dispersion, has a lower boiling point than water.
  • the solvent can be removed from the dispersion by, for example, distillation.
  • the removal of the low boiling solvent is desirably conducted under conditions which are not deleterious to .the polyurethane-urea such as by vacuum distillation or thin film evaporation.
  • a solvent having a higher boiling point than water, such as dimethyl formamide, N- methyl-2-pyrrolidinone, and the like, may be employed.
  • the higher boiling solvent is generally retained in the polyurethane-urea dispersion polymer to enhance the coalescence of the polyurethane-urea particles.
  • the potential anionic groups In order to render this prepolymer 'water-dispersible', the potential anionic groups must be neutralized before, during, or after their incorporation into the polyurethane-ureas, with the help of suitable neutralizing agents or mixtures thereof.
  • suitable compounds for neutralizing the potential anionic groups are the primary, secondary, or tertiary amines. Of these the trialkyl-substituted tertiary amines are preferred.
  • Examples of these amines are trimethyl amine, triethyl amine, triisopropyl amine, tributyl amine, ⁇ , ⁇ -dimethyl-cyclohexyl amine, N,N- dimethylstearyl amine, ⁇ , ⁇ -dimethylaniline, N-methylmorpholine, N- ethylmorpholine, N-methylpiperazine, N-methylpyrrolidine, N-methylpiperidine, ⁇ , ⁇ -dimethyl-ethanol amine, N,N-diethyl-ethanol amine, triethanol amine, N- methyl-diethanol amine, dimethylaminopropanol, 2-rnethoxyethyldirnethyl amine, N-hydroXyethylpiperazine, 2-(2-dieriethylaminoethOxy)-ethanol and 5- diethylamino-2-pentanone.
  • tertiary amines are those which do not contain active hydrogen(s) as determined by the ZereWitihoff test since they are capable of reacting with the isocyanate groups of the prepolymers which can cause gelation, the formation of insoluble particles or chain termination.
  • the tertiary amines are especially advantageous since the salts formed from these amines are capable of decomposing under ambient conditions With volatilization of the tertiary amine. Another advantage of these tertiary amines is that they do not take part in the isocyahate-polyol reaction. For example, when isocyanate-
  • the potential anionic groups of this prepolymer When the potential anionic groups of this prepolymer are neutralized, they provide hydrophilicity to the prepolymer and better enable it to be stably dispersed in water.
  • the potential, or unneutralized, anionic groups do not provide this degree of hydrophilicity. Accordingly, a sufficient amount of the potential ionic groups must be neutralized so that when combined with the optional hydrophilic ethylene oxide units, the polyurethane-urea final product will be a stable dispersion.
  • At least about 75%, preferably atleast about 90%, of the potential anionic groups are neutralized to the corresponding anionic groups. Larger amounts of potential ionic groups may remain Unneutralized. However, there are no advantages to be gained from large quantities of unneutralized potential anionic groups and their presence could be detrimental as they would minimize the improvements in hydrolytic stability, which is obtained in accordance with this invention. When smaller amounts of potential ionic groups are incorporated, it may be necessary to neutralize substantially all of these groups to obtain the desired amount of hydrophilicity.
  • the neutralization steps may be conducted:
  • the reaction between the neutralizing agent and the potential anionic groups may be conducted at temperatures below about 90° C, preferably between about 30° and 80° C, with agitation of the reaction mixture.
  • the NCO-terminated prepolymer of the natural oil based poly-urethane dispersion is dispersed in distilled/de-ionized water with mild agitation.
  • the water temperature before dispersing is in a range from about 5°C to about 0°C, and preferably from about 25° C to about 85° C.
  • the polyamine component is a polyamine or a mixture of polyamines having an (average) amine functionality of 2 to 3 and an (average) molecular weight of from 50 to about 2000, preferably 50 to about 300.
  • the presence of primary and/or secondary amino groups in the polyamines mentioned is crucial.
  • Suitable polyamines include ethylenediamine, 1 ,2- and 1 ,3-diaminopropane, 1,4- diaminobutane, 1 ,6-diaminohexane, isophoronediamine, isomer mixture of 2,2,4- and 2,4,4-trimethylhexa-methylenediamine, 2-methyl-pentamethylenediamine, diethylene-triamine, 1.3- and 1 ,4-xylylenediamine, a, a, a', a'-tetrarhethyl-l ,3- and -1 ,4-xylylenediamine and 4,4-diaminodicyclohexylmethane.
  • Suitable diamines in the context of the invention are also hydrazine; hydrazine hydrate and substituted hydrazines, such as, for example, N-methylhydrazine, ⁇ , ⁇ '- dimethylhydrazine and their homologues and acid dihydrazides, adipic acid, ⁇ - methyladipic acid, sebacic acid, hydracrylic acid and terephthalic acid, semicarbazidoalkylene hydrazides, such as, for example, ⁇ - semicarbazidopropionic acid hydrazide (e.g.
  • semicarbazidoalkylene-carbazine esters such as, for example, 2- semicarbazidoethylcarbazine ester (e.g. DE-A 19 18 504), or aminosemicarbazide compounds, such as, for example, ⁇ -aminoethyl semicarbazido-carbonate (e.g. DE-A 19 02 931 ).
  • Suitable relatively high molecular weight polyamines of this type include the known polyether polyamines obtained by conversion of the hydroxyl groups of above-mentioned polyether polyols into primary amino groups.
  • the particle size (mean diameter) of the fully reacted water based anionic polyurethane-urea polymers of this natural oil based poly-urethane dispersion are in a range of about 30 nanometer to about 500 nanometer, and preferably from about 40 rim to about 100 nfn.
  • the water-based dispersions of the inventive polyurethane-urea polymers haVe solids content in a range from about 20% by weight to about 45% by weight, and preferably from about 30% by weight to about 40% by wei ght.
  • both sides of the substrate/carrier, disclosed above, are coated with the natural oil based poly-urethane dispersion disclosed herein and the said composition is joined with heat and pressure.
  • this substrate/carrier is coated with a layer of atleast 10 grams per square meter to 50 grams per square meter of the above-referred natural oil based poly-urethane dispersion.
  • This layer of coating is cured at a temperature range of 125°C to 170°C. This helps achieve waterproofing and moisture barrier properties for the packaging material. It is pertinent to note that there is no use of aluminum to achieve waterproofing and moisture barrier properties in this packaging material.
  • the other side of the substrate/carrier, disclosed above, is coated with a layer of atleast 05 grams per square meter to 25 grams per square meter of the above- referred natural oil based poly-ufethane dispersion.
  • This layer of coating is dried at a temperature range of 90°C to 170°C. It helps achieve heat scalable properties for the packaging material.
  • the packaging material thus produced is non-plaStic and bio degradable in nature.
  • the packaging material as disclosed, is efficient in terms of cost as well as the materials used.
  • the packaging material as disclosed, is printable, thereby making it useful in industry.
  • the packaging material, as disclosed, is multi-purpose and can be widely used in the industry due to its superior properties/characteristics.
  • the packaging material disclosed in this invention is specifically suitable for, amongst others, direct food contact applications.
  • the packaging material can be used for Various goods, without any restriction/limitation of shape, size or nature of the goods. All percentages, preferred amounts or measurements, ranges and endpoints thereof herein are inclusive. Numbers herein have no more precision than stated. All amounts, ratios, proportions and other measurements are by weight unless

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

Cette invention concerne une laque à base d'huile naturelle, aqueuse, pour un matériau d'emballage flexible de qualité alimentaire, développé à l'aide d'un substrat/support constitué de la combinaison de non tissé 100 % viscose et de papier, et revêtu par une dispersion de polyuréthane à base d'huile naturelle selon l'invention. Ce matériau d'emballage est non plastique et biodégradable, et possède des propriétés telles qu'une résistance à l'humidité, une aptitude au thermoscellage et une durabilité. De telles propriétés rendent le matériau d'emballage étanche à l'eau, durable, respectueux de l'environnement, facile à utiliser et largement applicable dans l'industrie. En raison de la nature fondamentale de cette invention, le matériau d'emballage peut être utilisé pour divers produits, sans aucune restriction/limitation de forme, de dimension ou de nature des produits.
PCT/IN2011/000287 2011-03-01 2011-04-27 Laque à base d'huile naturelle, aqueuse, non plastique et biodégradable, pour un emballage flexible de qualité alimentaire Ceased WO2012117416A1 (fr)

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IN555/DEL/2011 2011-03-01
IN555DE2011 2011-03-01

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WO2012117416A1 true WO2012117416A1 (fr) 2012-09-07

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1128568A (en) 1965-10-16 1968-09-25 Bayer Ag Polyurethane compositions
DE1902931A1 (de) 1969-01-22 1970-08-27 Bayer Ag Semicarbazid-alkylamin-Elastomerfaeden
DE1918504A1 (de) 1969-04-11 1970-10-29 Bayer Ag Segmentierte Polyurethanelastomere
DE1770591A1 (de) 1968-06-07 1971-11-04 Bayer Ag Lineare,segmentierte Polyurethanelastomere
US4851459A (en) 1987-12-18 1989-07-25 Century Adhesives Corp. Aqueous peroxy carbamyl group containing polymer systems and methods of their production and use
US4883694A (en) 1987-12-18 1989-11-28 Century Adhesives Corp. Method of forming flexible packages and novel flexible packages
US5334690A (en) 1992-07-09 1994-08-02 Hoechst Aktiengesellschaft Polyurethane dispersions
WO2003048222A1 (fr) * 2001-12-05 2003-06-12 Basf Aktiengesellschaft Matiere d'emballage contenant une dispersion de polyurethanne
WO2010027674A1 (fr) * 2008-09-02 2010-03-11 Ppg Industries Ohio, Inc. Dispersion aqueuse de polyuréthane comprenant un polyol dérivé d'une biomasse et revêtements la comprenant

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1128568A (en) 1965-10-16 1968-09-25 Bayer Ag Polyurethane compositions
DE1770591A1 (de) 1968-06-07 1971-11-04 Bayer Ag Lineare,segmentierte Polyurethanelastomere
DE1902931A1 (de) 1969-01-22 1970-08-27 Bayer Ag Semicarbazid-alkylamin-Elastomerfaeden
DE1918504A1 (de) 1969-04-11 1970-10-29 Bayer Ag Segmentierte Polyurethanelastomere
US4851459A (en) 1987-12-18 1989-07-25 Century Adhesives Corp. Aqueous peroxy carbamyl group containing polymer systems and methods of their production and use
US4883694A (en) 1987-12-18 1989-11-28 Century Adhesives Corp. Method of forming flexible packages and novel flexible packages
US5334690A (en) 1992-07-09 1994-08-02 Hoechst Aktiengesellschaft Polyurethane dispersions
WO2003048222A1 (fr) * 2001-12-05 2003-06-12 Basf Aktiengesellschaft Matiere d'emballage contenant une dispersion de polyurethanne
WO2010027674A1 (fr) * 2008-09-02 2010-03-11 Ppg Industries Ohio, Inc. Dispersion aqueuse de polyuréthane comprenant un polyol dérivé d'une biomasse et revêtements la comprenant

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Encyclopedia of Polymer Science and Engineering", vol. 13, pages: 252

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