EP2492395B1 - Oil and grease resistant treatment compositions - Google Patents
Oil and grease resistant treatment compositions Download PDFInfo
- Publication number
- EP2492395B1 EP2492395B1 EP20120153981 EP12153981A EP2492395B1 EP 2492395 B1 EP2492395 B1 EP 2492395B1 EP 20120153981 EP20120153981 EP 20120153981 EP 12153981 A EP12153981 A EP 12153981A EP 2492395 B1 EP2492395 B1 EP 2492395B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cellulosic materials
- oil
- aqueous
- compositions
- resistant treatment
- 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.)
- Not-in-force
Links
Classifications
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
-
- 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
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/10—Phosphorus-containing compounds
-
- 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
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/31—Gums
- D21H17/32—Guar or other polygalactomannan gum
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength agents
-
- 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
Definitions
- the present invention relates to aqueous oil and grease resistant treatment compositions for cellulosic materials comprising a fluorocarbon resin, a guar gum and an inorganic phosphate salt.
- the present invention also relates to a method for imparting oil and grease resistance to cellulose materials comprising the step of applying to said cellulosic materials said aqueous oil and grease resistant treatment compositions.
- 7,252,740 discloses carboxylic acids comprising perfluoropolyether chains capable of imparting oleo-repellence to various artificial or natural substrata, especially to paper.
- U.S. Pat. No. 5,370,919 discloses fluorochemical compositions for imparting oil and water repellency to various substrates.
- Fluorine-containing polymers have been used to impart oleo-repellency to paper.
- U.S. Pat. No. 5,247,008 describes finishing agents for textiles, leather, paper and mineral substrates which are aqueous dispersions of a copolymer of a perfluoroalkyl acrylate or methacrylate, an alkyl acrylate or methacrylate and an aminoalkyl acrylate or methacrylate.
- US 4,529,658 discloses fluorochemicals copolymers for use as wet-end papermaking additives which impart oil and water repellency and food stain resistance to ovenanble paperboard, but it does not mention the use of a guar gum and an inorganic phosphate salt in the additives, or in the related paperboard treatment.
- Partial esters of phosphoric or phosphonic acid such as salts of fluoroalkyl or (per)fluoropolyether phosphates or salts of N-alkyl fluoroalkane sulfonamidoalkyl phosphates, are known as oil-repellent agents for paper, in order to render the sheet more resistant to the penetration of oils.
- Such conventional oil proof agents are applied to paper either by internal addition (internal sizing), which comprises dissolving or dispersing the agent in a pulp suspension or in a slurry for paper making, or by external addition (surface sizing), by dipping a sheet of paper in an aqueous solution or dispersion of the agent or by brushing on the sheet with the solution or dispersion to coat the surface of paper with the agent.
- internal sizing comprises dissolving or dispersing the agent in a pulp suspension or in a slurry for paper making, or by external addition (surface sizing), by dipping a sheet of paper in an aqueous solution or dispersion of the agent or by brushing on the sheet with the solution or dispersion to coat the surface of paper with the agent.
- Fluorocarbon resins including all the different fluorine containing compounds that are commercially available as oil-repellent agents, are very excellent in imparting chemical resistance and solvent resistance and, further, good in heat resistance, weather resistance, gas impermeability, etc. Flu
- the cost of fluorocarbon resins conferring oleo-repellency represents a high fraction of the final cost of the finished product.
- Said fluorinated compounds indeed, although they are usually present in the final product in amounts ranging from about 0.1 to 2% by weight, represent from 10% up to 50% of the total costs of the final product (including the process water, the energy and the cellulosic substrate).
- the fluorocarbon resins are usually applied in combination with one or more sizing agents, which help to reduce the cost of the treatment by increasing the quantity of resin retained by the substrate.
- the sizing agent may be a natural sizing agent, such as animal glue, wax emulsion, rosin, starch; a semi-synthetic sizing agent, such as a fatty acid salt or complex, a fortified rosin, e.g.
- trisodium maleopimaric acid salt sodium alginate, starch or modified starch, or sodium carboxymethylcellulose
- a synthetic sizing agent such as an alkylketene dimer, polyvinyl alcohol, a styrene-maleic anhydride polymer, and the like. Also, mixtures of the above sizing agents may be used.
- the present invention aims to overcome the difficulties mentioned above, providing aqueous oil and grease resistant treatment compositions for cellulosic materials comprising a fluorocarbon resin, a guar gum and an inorganic phosphate salt.
- US 4,320,226 describes the use of a phosphate ester of a guar gum as sizing agent for the preparation of oil and grease resistant paper.
- This ester which has a degree of substitution from 0.1 to 0.5, is obtained by reaction of a guar gum and phosphoric acid at high temperature in the presence of a base.
- substrates having outstanding oil and grease resistance can be produced by using a physical mixture of a guar gum and an inorganic phosphate salt as the sizing agent, in combination with a fluorocarbon resin.
- compositions comprising a mannogalactan gum, a hydrophobising and a neutralizing agent which are easy dispersible in water, and their use in the paper making process; the mannogalactan gum is typically guar and the neutralizing agent may be an inorganic phosphate salt. Nonetheless, the composition US 2,868,664 are added to the paper furnish prior to the formation of the web to increase the wet and dry resistance of paper and they are not used in combination with a fluorocarbon resin to improve oil and grease repellency.
- WO 99/53139 describes a sizing composition comprising a polyaluminium phosphate sulphate compound and, possibly a protective colloid or retention agent that may be guar gum, but it does not mention the use of fluorocarbon resins.
- aqueous oil and grease resistant treatment compositions for cellulosic materials comprising:
- the present invention provides a method for imparting oil and grease repellency to cellulosic materials, comprising the step of applying to the cellulosic materials the above-described aqueous compositions in such an amount that the fluorocarbon resin is applied to said cellulosic materials in an amount between 0.08 and 5.0 % by weight on the weight of the cellulosic material.
- Another object of the present invention is the use of the above described aqueous compositions for the manufacture of paper and paperboard for food packaging and food contact.
- the present invention provides paper or paperboard articles treated with the above-described aqueous oil and grease resistant treatment compositions useful in food grade applications.
- the method for treating cellulosic materials of the disclosure comprises the preparation of the aqueous compositions described above by mixing the ingredients from a) to c) with water, or with a water/solvent mixture.
- the mixture is preferably carried out at room temperature, and anyway in such conditions that no esterification reaction takes place between the guar gum and the inorganic phosphate salt.
- aqueous oil and grease resistant treatment compositions for cellulosic materials of the invention comprise:
- the fluorocarbon resin may be any fluorine containing compound or composition which is known in the art and is useful for oleo-repellent treatments, examples of which can be found in " Sizing with Fluorochemicals", R. D. Howells, 1997 Sizing Short Course, Ten, TN, Apr. 14-16, TAPPI Press , or in " Fluorochemical Sizing", Olson C.C. et al. in "The Sizing of Paper", 3rd Edition, pag. 151-177, edited by Gess, J.M. and Rodriguez, J.M., TAPPI Press, 2005 .
- suitable fluorine containing compounds may include fluorochemical copolymers.
- Suitable commercially available fluorine containing compositions include MASURF FS 130 EB (perfluoro alkyl ethyl phosphate), a trademark of Mason Chemical Company, UNIDYNE TG 8711 and Unidyne TG 8111 (registered trademark of DAIKIN Inc.). Similar fluorine containing compositions include SOLVERA PT 5045 (water-based formulation containing a perfluoropolyether-phosphate derivative), a trademark of Solvay Solexis. Another suitable fluorine containing composition include Cartafluor UHC, from Clariant.
- fluorocarbon resin is "SEQUAPEL 1422” (a registered trademark of Sequa Chemicals, Inc.)
- suitable commercially available fluorocarbon resins include “LODYNE P-201” and “LODYNE P-208E”, which are registered trademarks of Ciba-Geigy Corporation, Greensboro, N.C.
- Guar gum or simply guar, is a polysaccharide belonging to the family of galactomannans. It is extracted from, Cyamopsis Tetragonolobus, a leguminosae plant that grows in the semi-dry region of tropical countries, particularly in India and in Pakistan.
- the polysaccharide contained in guar seeds consists of a main chain of mannose units linked together by 1-4-[beta]-glycosidic linkages from which single galactose units branch by means of 1-6-[alfa]-glycosidic linkages.
- the ratio of galactose units to mannose units can vary from one source to another. In the case of the polysaccharide contained in guar seeds the ratio is about 1:2.
- This polysaccharide forms highly viscous solutions in water at low concentrations, thus, 1 percent solutions of non-depolymerized guar gum in water usually have a viscosity of between about 1,000 and about 9,000 mPa * s at 25 °C, when measured with a Brookfield RVT® viscometer at 20 rpm.
- guar In the preparation of the aqueous compositions of the disclosure, the use of purified guar is thus preferred.
- guar can be purified by extraction with water-solvent mixtures or, for crosslinked products, simply with water ( R.L. Whistler, Industrial Gums, 3rd editi on).
- the use of depolymerised guar is preferred.
- Preferred guar gums have a Brookfield® RVT viscosity comprised between 10 to 10000 mPa*s in aqueous solution at 2% by weight measured at 20 °C and 20 rpm.
- guar gums having Brookfield® RVT viscosity between 20 and 500 mPa*s in aqueous solution at 2% by weight, 20°C and 20rpm, and ash content below 5.5% by weight.
- Inorganic phosphate salt that may be used are, by way of example: phosphates, hydrogen phosphates, dihydrogen phosphates; polyphosphates such as pyrophosphate and triphosphate, and ring or chain metaphosphates, with 1-6 phophorus atom, and mixture thereof.
- Suitable inorganic phosphate salts include orthophosphate, metaphosphate, hexametaphosphate, pyrophosphate, tripolyphosphate, tetrapolyphosphate and polyphosphate salts of alkali metals.
- the inorganic phosphate salt is a sodium or potassium salt of tripolyphosphate or hexametaphosphate; more preferably it is sodium or potassium tripolyphosphate.
- the aqueous oil and grease resistant treatment compositions for cellulosic materials of this invention can further comprise at least another sizing agent commonly used for the sizing of cellulosic material such as starch and starch derivatives, alkylketene dimers and carboxymethyl cellulose.
- This additional sizing agent can be present in an amount comprised between 0.5 and 6% wt.
- Preferred additional sizing agents are starch and starch derivatives.
- aqueous oil and grease resistant treatment compositions for cellulosic materials are applied to cellulosic materials such as paper or textiles, in the form of solution, emulsion or dispersion in a suitable carrier (e.g., an aqueous medium or a mixture of water and organic solvents), in accordance with known methods.
- a suitable carrier e.g., an aqueous medium or a mixture of water and organic solvents
- the solvent can be any solvent or solvent combination that is suitable to dissolve or disperse the composition and/or other components of the composition.
- a solventless medium may be preferred but in others, it may be desirable to add solvents, such as alcohols, that evaporate quicker.
- aqueous oil and grease resistant sizing composition according to the disclosure can be applied as a single phase system (e.g., aqueous phase system) or a metastable system, i.e. a system that does not undergo substantial phase separation on the time-scale of formulation preparation and/or application on the substrate.
- aqueous phase system e.g., aqueous phase system
- metastable system i.e. a system that does not undergo substantial phase separation on the time-scale of formulation preparation and/or application on the substrate.
- aqueous oil and grease resistant treatment compositions for cellulosic materials can also be prepared in the form of emulsion.
- An emulsifying aid such as a surfactant, can be added as well, to help stabilize the emulsion.
- Adjuvants such as dyes, inhibitors, defoamers, fillers (such as clay or calcium carbonate), whiteners, silica, antioxidants, and the like can be added to the aqueous composition, if desired.
- a chelating agent such as ethylenediaminetetracetic acid (EDTA) or one of its salts, to soften the water.
- EDTA ethylenediaminetetracetic acid
- aqueous oil and grease resistant treatment compositions for cellulosic materials according to the invention can be applied on the cellulosic materials using any known application technique as part of the making process (such as by addition to the cellulose pulp or on the textile fibers/yarns) or as a surface post-treatment (application by size-press of a laminated paperboard or of a woven fabric).
- compositions of the invention are applied by spraying, extrusion, padding, immersion or foaming.
- compositions of the invention are applied in such an amount that the fluorocarbon resin is applied to the cellulosic material in an amount between 0.15 and 1.5 % by weight on the weight of the cellulosic material.
- aqueous oil and grease resistant treatment compositions for cellulosic materials can be applied to any cellulosic material, but they are particularly suited for paper and paperboard that represent the preferred cellulosic materials.
- paper and paperboard refers to a paper based substrate resulting from the mixing of fibers that can include, at least in part, vegetable and/or wood fibers, such as cellulose, hemicelluloses, lignin; and/or synthetic fibers.
- the aqueous oil and grease resistant treatment compositions for cellulosic materials according to the invention can be applied to the pre-formed paper or cardboard by coating, or can be applied during their manufacturing process.
- the aqueous oil and grease resistant treatment compositions for cellulosic materials of this invention can be used in combination with paper and paperboard manufacturing adjuvants such as natural and synthetic wax emulsions, alum, retaining agents, buffering agents, fireproofing agents, fungicidal agents, antistatic agents, dyes, optical bleaching agents, sequestering agents, mineral salts, swelling agents, and fillers such as clay, talc, and titanium dioxide.
- aqueous oil and grease resistant treatment compositions for cellulosic materials of this invention can be used both in the acidic and in the alkaline paper and paperboard manufacturing process.
- Grease and oil resistant cellulosic materials prepared with the aqueous compositions according to the invention can be used in all the applications for which this kind of material is conventionally used.
- treated paper and paperboard can be utilized in food processing, including baking, or in food packaging, and treated cellulosic textiles can be utilized for carpet, upholstery and other similar applications.
- the paper and paperboard treated with the aqueous oil and grease resistant treatment compositions for cellulosic materials of this invention are used in food packaging and food processing, because they are suitable for food contact.
- Some examples of preferred applications of the treated paper and paperboard include fast food packaging, food packaging for microwave oven, pizza boxes, candy wrappers, pet-food bags and boxes, packaging for fatty foods in general, and the like.
- aqueous compositions comprising: a) from 0.1 to 10% wt of a fluorocarbon resin; b) from 0.05 to 7.0 % wt af a guar gum; c) from 0.01 to 1.0 % wt of an inorganic phosphate salt for the manufacture of paper and paperboard for food packaging and food contact is another object of the present invention.
- Guar 1 is a depolymerized guar gum.
- the product has a RVT Brookfield Viscosity, 20 °C and 20 rpm, 2% by weight water solution of 160 mPa*s and ash content of about 13%.
- Guar 2 is a depolymerized guar gum having a RVT Brookfield Viscosity, 20 °C and 20 rpm, 2% water solution of 150 mPa * s and ash content ⁇ 5%.
- Table 1 Ingredient Ex. 1 Ex. 2 Ex. 3 Ex. 4 Ex. 5 Ex. 6* Ex.
- Guar 3 is a guar gum with a RVT Brookfield Viscosity of 5200 mPa*s at 25 °C, 20 rpm, 1% wt water solution.
- Table 3 Ingredient MIX A % w/w MIX B % w/w MIX C % w/w Guar 1 90.58 - - Guar 2 - 90.58 - Guar 3 - - 90.58 Tripolyphosphate 9.42 9.42 9.42 9.42
- Aqueous oil and grease resistant treatment compositions of the invention were obtained by dissolving MIX A and MIX B in demineralized water at a concentration of 3% wt together with MASURF FS 130 EB or UNIDYNE TG 8111 (water-based fluoropolymer emulsion, commercialized by DAIKIN INC.).
- aqueous compositions of the invention were compared with a aqueous composition containing oxidized corn starch, dispersed in cold demineralized water and then dissolved at 90° C in 30 minutes.
- Table 4 shows the amount of active ingredients used to prepare 100 g of aqueous oil and grease resistant treatment compositions.
- MIX B described above, was dissolved in demineralized water at a concentration of 2.7% wt with the addition of 0.6% wt, as active substance, of MASURF FS 130 EB and UNIDYNE TG 8111, to obtain aqueous oil and grease resistant treatment compositions for cellulosic materials according to the invention with a dry matter content of 3.3% wt.
- the two aqueous compositions of the invention were compared with a aqueous composition containing oxidized corn starch previously described.
- CAMBREX SAH Sodium Alginate , RVT Brookfield Viscosity 550 mPa*s, at 25 °C, 100 rpm, 1% water solution; commercialized by CAMBRIAN CHEMICALS Inc.
- MIX C MIX C in water
- Aqueous oil and grease resistant treatment compositions were prepared by mixing together the corn starch solution with 0.6 % wt of fluorocarbon resins (active substance) and with the alginate or guar gum solutions maintaining an active matter amount of 75% wt of starch - 25% wt of alginate or guar.
- Example 20 - 23 About 200 ml of each solution, Example 20 - 23, were transferred in a laboratory Pad-Batch device (pressure 2 Bar, rolls speed 4 m/min) and used to impregnate three A4 format untreated paper specimen (40 g/m 2 ). The addition of oil and grease resistant composition on the paper specimen was about 0.5 g/m 2 .
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- Edible Oils And Fats (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITVA2011A000005A IT1406089B1 (it) | 2011-02-22 | 2011-02-22 | Composizioni per impartire resistenza a grassi e oli |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2492395A1 EP2492395A1 (en) | 2012-08-29 |
EP2492395B1 true EP2492395B1 (en) | 2013-08-28 |
Family
ID=43976535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120153981 Not-in-force EP2492395B1 (en) | 2011-02-22 | 2012-02-06 | Oil and grease resistant treatment compositions |
Country Status (2)
Country | Link |
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EP (1) | EP2492395B1 (it) |
IT (1) | IT1406089B1 (it) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018062993A1 (en) | 2016-09-30 | 2018-04-05 | Cooperatie Avebe U.A. | Greaseproof paper |
US12037749B2 (en) | 2016-07-26 | 2024-07-16 | Footprint International, LLC | Acrylate and non-acrylate based chemical compositions for selectively coating fiber-based food containers |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140102651A1 (en) * | 2012-10-12 | 2014-04-17 | Georgia-Pacific Chemicals Llc | Greaseproof paper with lower content of fluorochemicals |
US10036126B2 (en) * | 2016-07-26 | 2018-07-31 | Footprint International, LLC | Methods for manufacturing fiber-based beverage lids |
US10428467B2 (en) | 2016-07-26 | 2019-10-01 | Footprint International, LLC | Methods and apparatus for manufacturing fiber-based meat containers |
US11939129B2 (en) | 2016-07-26 | 2024-03-26 | Footprint International, LLC | Methods and apparatus for manufacturing high-strength fiber-based beverage holders |
US9988199B2 (en) * | 2016-07-26 | 2018-06-05 | Footprint International, LLC | Methods and apparatus for manufacturing fiber-based microwavable food containers |
US11686050B2 (en) | 2016-07-26 | 2023-06-27 | Footprint International, LLC | Methods, apparatus, and chemical compositions for selectively coating fiber-based food containers |
US11654600B2 (en) | 2016-07-26 | 2023-05-23 | Footprint International, Inc. | Methods, apparatus, and chemical compositions for selectively coating fiber-based food containers |
US20180030658A1 (en) * | 2016-07-26 | 2018-02-01 | Footprint International, LLC | Methods and Apparatus For Manufacturing Fiber-Based Produce Containers |
US10124926B2 (en) | 2016-07-27 | 2018-11-13 | Footprint International, LLC | Methods and apparatus for manufacturing fiber-based, foldable packaging assemblies |
SE542217C2 (en) | 2018-04-12 | 2020-03-17 | Stora Enso Oyj | A method for the production of a coated paper, paperboard or film and a coated paper, paperboard or film |
US20200002069A1 (en) * | 2018-06-28 | 2020-01-02 | Kruger Holdings L.P. | Grease resistant paperboard and pizza box made therewith |
US11306440B2 (en) | 2019-06-28 | 2022-04-19 | Footprint International, LLC | Methods and apparatus for manufacturing fiber-based meat containers |
CN112080964B (zh) * | 2020-09-10 | 2022-10-18 | 将军烟草集团有限公司济南包装材料分公司 | 一种防渗油涂布液及制备方法与应用 |
WO2023180377A1 (en) | 2022-03-22 | 2023-09-28 | CHT Germany GmbH | Water-based barrier coating of native substances for paper, cardboard or moulded pulp |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2868664A (en) * | 1954-05-03 | 1959-01-13 | Stein Hall & Co Inc | Dry mannogalactan composition |
CH642669A5 (de) | 1979-12-03 | 1984-04-30 | Meyhall Chemical Ag | Wasserloesliches guarprodukt und verfahren zu dessen herstellung. |
US4426466A (en) | 1982-06-09 | 1984-01-17 | Minnesota Mining And Manufacturing Company | Paper treatment compositions containing fluorochemical carboxylic acid and epoxidic cationic resin |
US4529658A (en) * | 1982-10-13 | 1985-07-16 | Minnesota Mining And Manufacturing Company | Fluorochemical copolymers and ovenable paperboard and textile fibers treated therewith |
DE3877377T2 (de) | 1987-02-12 | 1993-05-27 | Daikin Ind Ltd | Oelabstossende zusammensetzung fuer papier. |
DE69210608T2 (de) | 1991-07-10 | 1996-12-05 | Minnesota Mining & Mfg | Fluorverbindung enthaltende wasser- und ölabweisende behandlungsmittel |
DE4201604A1 (de) | 1992-01-22 | 1993-07-29 | Bayer Ag | Fluorhaltige copolymerisate und daraus hergestellte waessrige dispersionen |
SE513080C2 (sv) * | 1998-04-14 | 2000-07-03 | Kemira Kemi Ab | Limningskomposition och förfarande för limning |
ITMI20011424A1 (it) | 2001-07-05 | 2003-01-05 | Ausimont Spa | Dispersioni di polimeri fluorurati |
ITMI20020056A1 (it) | 2002-01-15 | 2003-07-15 | Ausimont Spa | Composizioni acquose di fosfati di perfluoropolieteri e loro uso per conferire oleorepellenza alla carta |
ITMI20031104A1 (it) | 2003-06-03 | 2004-12-04 | Solvay Solexis Spa | Acidi carbossilici(per) fluoropolieterei e loro uso per il trattamento oleorepellente della carta |
-
2011
- 2011-02-22 IT ITVA2011A000005A patent/IT1406089B1/it active
-
2012
- 2012-02-06 EP EP20120153981 patent/EP2492395B1/en not_active Not-in-force
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US12037749B2 (en) | 2016-07-26 | 2024-07-16 | Footprint International, LLC | Acrylate and non-acrylate based chemical compositions for selectively coating fiber-based food containers |
WO2018062993A1 (en) | 2016-09-30 | 2018-04-05 | Cooperatie Avebe U.A. | Greaseproof paper |
Also Published As
Publication number | Publication date |
---|---|
ITVA20110005A1 (it) | 2012-08-23 |
IT1406089B1 (it) | 2014-02-06 |
EP2492395A1 (en) | 2012-08-29 |
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