EP3720918A1 - Wasserdampfsterilisierbare transparente barriereschichten gegen sauerstofftransmission für verpackungsmaterialien - Google Patents
Wasserdampfsterilisierbare transparente barriereschichten gegen sauerstofftransmission für verpackungsmaterialienInfo
- Publication number
- EP3720918A1 EP3720918A1 EP18811044.9A EP18811044A EP3720918A1 EP 3720918 A1 EP3720918 A1 EP 3720918A1 EP 18811044 A EP18811044 A EP 18811044A EP 3720918 A1 EP3720918 A1 EP 3720918A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- formulation
- acid
- laminate structure
- content
- formulation according
- 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.)
- Withdrawn
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 45
- 229910052760 oxygen Inorganic materials 0.000 title claims description 45
- 239000001301 oxygen Substances 0.000 title claims description 45
- 230000005540 biological transmission Effects 0.000 title claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 15
- 230000004888 barrier function Effects 0.000 title description 26
- 239000005022 packaging material Substances 0.000 title description 5
- 239000000203 mixture Substances 0.000 claims abstract description 89
- 238000009472 formulation Methods 0.000 claims abstract description 77
- 239000007787 solid Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 24
- 229920000642 polymer Polymers 0.000 claims abstract description 22
- 150000001875 compounds Chemical class 0.000 claims abstract description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 13
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 10
- 229920000582 polyisocyanurate Polymers 0.000 claims abstract description 10
- 239000011495 polyisocyanurate Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 125000002252 acyl group Chemical group 0.000 claims abstract description 4
- 125000005370 alkoxysilyl group Chemical group 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims description 23
- 239000011248 coating agent Substances 0.000 claims description 22
- 230000001954 sterilising effect Effects 0.000 claims description 22
- 238000004659 sterilization and disinfection Methods 0.000 claims description 22
- 239000000758 substrate Substances 0.000 claims description 18
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 13
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 9
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical class C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 6
- 125000003158 alcohol group Chemical group 0.000 claims description 5
- 239000003125 aqueous solvent Substances 0.000 claims description 5
- 229920002125 Sokalan® Polymers 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 150000008065 acid anhydrides Chemical class 0.000 claims description 4
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 4
- 239000004584 polyacrylic acid Substances 0.000 claims description 4
- -1 trimethoxysilyl group Chemical group 0.000 claims description 4
- 239000005977 Ethylene Substances 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 230000009477 glass transition Effects 0.000 claims description 3
- 238000007127 saponification reaction Methods 0.000 claims description 3
- 238000007740 vapor deposition Methods 0.000 claims description 3
- BSYNRYMUTXBXSQ-FOQJRBATSA-N 59096-14-9 Chemical compound CC(=O)OC1=CC=CC=C1[14C](O)=O BSYNRYMUTXBXSQ-FOQJRBATSA-N 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims description 2
- 230000007480 spreading Effects 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- 238000005019 vapor deposition process Methods 0.000 claims description 2
- 229920001228 polyisocyanate Polymers 0.000 claims 1
- 239000005056 polyisocyanate Substances 0.000 claims 1
- 239000007858 starting material Substances 0.000 claims 1
- 125000005369 trialkoxysilyl group Chemical group 0.000 claims 1
- 125000000217 alkyl group Chemical group 0.000 abstract description 5
- 239000011877 solvent mixture Substances 0.000 abstract description 3
- 239000000413 hydrolysate Substances 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000011550 stock solution Substances 0.000 description 21
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 15
- 239000002985 plastic film Substances 0.000 description 14
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 12
- 229920006255 plastic film Polymers 0.000 description 12
- 239000004372 Polyvinyl alcohol Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- 238000001035 drying Methods 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- 235000013305 food Nutrition 0.000 description 7
- 239000012071 phase Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 229920002799 BoPET Polymers 0.000 description 4
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000006482 condensation reaction Methods 0.000 description 4
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- RZXDTJIXPSCHCI-UHFFFAOYSA-N hexa-1,5-diene-2,5-diol Chemical compound OC(=C)CCC(O)=C RZXDTJIXPSCHCI-UHFFFAOYSA-N 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000000543 intermediate Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 239000000825 pharmaceutical preparation Substances 0.000 description 3
- 229940127557 pharmaceutical product Drugs 0.000 description 3
- 229910052615 phyllosilicate Inorganic materials 0.000 description 3
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QWOVEJBDMKHZQK-UHFFFAOYSA-N 1,3,5-tris(3-trimethoxysilylpropyl)-1,3,5-triazinane-2,4,6-trione Chemical compound CO[Si](OC)(OC)CCCN1C(=O)N(CCC[Si](OC)(OC)OC)C(=O)N(CCC[Si](OC)(OC)OC)C1=O QWOVEJBDMKHZQK-UHFFFAOYSA-N 0.000 description 1
- 238000005133 29Si NMR spectroscopy Methods 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 description 1
- 239000001639 calcium acetate Substances 0.000 description 1
- 229960005147 calcium acetate Drugs 0.000 description 1
- 235000011092 calcium acetate Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 244000053095 fungal pathogen Species 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000009512 pharmaceutical packaging Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007764 slot die coating Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
Classifications
-
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/02—Polysilicates
-
- 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
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
-
- 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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
Definitions
- the present invention is a formulation comprising:
- X is identical or different and is H, C 1 -C 4 -alkyl or acyl
- R is OX, OH, C 1 -C 4 -alkyl or alkoxysilyl-substituted ethylene radical
- a water-containing solvent mixture containing at least one alcohol having 1 to 4 carbon atoms wherein the pH of the formulation in a range of 1, 8 - 4.7, preferably from 3 - 4.5, and the content of the hydroxyl-carrying polymer from 13% to 33% by weight, based on the solids content of the formulation, is a process for their preparation, their use for the preparation of laminate structures and corresponding laminate structures having at least 2 layers comprising the formulation.
- Oxygen in the air is one of the causes and conditions for the spoilage of, for example, food, electronics or pharmaceutical products during transport and storage. The spoilage often results from the growth of pathogenic bacteria or fungi on foods as well as from the oxidation of the essential ingredients. Therefore, it is desired to keep oxygen from a variety of food, electronic and pharmaceutical products by a tight package.
- polymers or plastics such as polyester, especially polyethylene terephthalate (PET), because of their transparency or optical transparency, their low weight and their mechanical stability alternatives made of metal or glass preferred.
- PET polyethylene terephthalate
- the commercially available lightweight transparent plastic films made of PET offer only a limited protection against the diffusion or transmission of oxygen through this film in the food or drug packaging.
- the typical permeability or transmission of the 12 to 125 micrometers thick plastic films to oxygen is in the range of 5 to 500 cm 3 / m 2 / g / d / atm.
- Such permeability - also referred to as transmission rate - severely limits the shelf life and, associated therewith, the usability of these packaged products, eg foods or pharmaceuticals.
- plastics are coated as films and thus form a laminate structure or a laminate.
- Polymers for example polyvinyl dichloride (PVDC), ethylenevinyl alcohol, are used to coat these plastic films and to build up a laminate structure (EVOH) or polyvinyl alcohol (PVOH) as well as inorganic oxide compounds, such as silicon oxide or alumina compounds, known in the art.
- PVDC polyvinyl dichloride
- EVOH laminate structure
- PVOH polyvinyl alcohol
- inorganic oxide compounds such as silicon oxide or alumina compounds
- PVDC polyvinyldichloride
- Such a treatment is standard in the food industry for the purpose of sterilization (killing of pathogenic germs) and is carried out before and in particular after the packaging of the product.
- This sterilization with hot steam is known as "retorting” or “retort treatment” in the prior art.
- US Pat. No. 7,531,243 B2 discloses the preparation of transparent barrier layers which contain phyllosilicates, against oxygen transmission, which retain their barrier effect even under high atmospheric humidity.
- the preparation is based on the sol-gel method using polymers which have hydroxyl groups and react by condensation reactions.
- the polymer used is PVOH.
- As a sol-gel method the hydrolysis of the alkoxysilanes with hydrochloric acid at low pH, i. H. pH ⁇ 2, applied.
- No. 7,157,147 B2 discloses the preparation of transparent barrier layers against oxygen transmission, which maintain an oxygen transmission rate of 1 g / m 2 / d / atm even after 30 min treatment with hot water at 90 ° C.
- the preparation is made of sheet silicates, hydrolyzed alkoxysilanes, polyvinyl alcohol (PVOH) and polyethylene oxide.
- the thickness of the described barrier layers is 2 pm.
- the barrier effect is achieved only after aging or maturing of the laminate structure in a humid atmosphere at 40 ° C for 4 d.
- the water temperature of 90 ° C used in US Pat. No. 7,157,147 B2 is generally insufficient for sterilization.
- a disadvantage of this process and the laminate produced according to the method is the required addition of phyllosilicates, since the process is more complex and the preservation of a constant film quality in mass production is made more difficult.
- US 7763335 B2 discloses a multi-step process for producing laminate structures which retain their barrier to oxygen transmission even after 30 minutes of treatment with water at 120 ° C in an autoclave.
- the process comprises a formulation based on polyacrylic acid and Alkoxysilanes, temperature control at 10 ° C, coating, drying 5 min at 80 ° C, aging or maturing of the laminate at 50 ° C within 3 d, after-treatment for 5 min at 200 ° C, soaking for 20 s in aqueous solution of calcium Acetate at 80 ° C and subsequent drying.
- US 2017/0009034 A1 discloses formulations of alkoxysilanes and polyvinyl alcohol having a pH in the range of 1 to 3 while cooling these formulations to 10 ° C. From this formulation, laminates are produced by drying these layers in two stages within 30 s at 100 ° C. followed by 72 h at 85 ° C. The laminates thus produced maintain their barrier effect against the transmission of oxygen even after 500 h storage at 60 ° C and 90% relative humidity.
- barrier layers must be combined with alumina deposited from the gas phase. This requires the use of a more complex equipment in the production.
- a further disadvantage is that the aftertreatment of the laminate in the form of a 2-stage drying with a time requirement over 3 d is required.
- US Pat. No. 7,560,168 B2 discloses the preparation of transparent barrier layers against oxygen transmission, which retain their barrier effect even after 30 minutes sterilization with hot steam at 121 ° C. ("retort treatment").
- the preparation is based on hydrolysates of alkoxysilanes and polymers with hydroxy group, which are applied as a barrier layer on a previously deposited by a gas phase process inorganic aluminum oxide layer.
- polymer having hydroxy group polyvinyl alcohol is used.
- a disadvantage of this prior art is the need to first deposit an inorganic layer of alumina or silicon oxide on the plastic film by means of a vacuum vapor-phase process before the barrier layer is applied.
- a disadvantage of the use of inorganic oxide compounds, such as silica or alumina compounds, is the coating of the plastic film by means of technically complicated vacuum or vapor deposition processes, such.
- CVD Chemical Vapor Deposition
- PVD Physical Vapor Deposition
- electron beam evaporation or also in an additional process step in the coating of condensed phase by means of technically complex dispersion process.
- a minimum is understood as meaning an oxygen transmission rate (OTR) ⁇ 4 cm 3 / m 2 / d / atm.
- OTR oxygen transmission rate
- the formulation, its preparation and its use for the production of laminates which has an OTR ⁇ 4 cm 3 / m 2 / d / atm, is free of inorganic metal oxides, regardless of whether said inorganic metal oxides by means of condensed phase, for example by Dispersion or by means of
- X is identical or different and is H, C 1 -C 4 -alkyl or acyl
- R is OX, OH, C 1 -C 4 -alkyl or alkoxysilyl-substituted ethylene radical
- hydrolysates are taken to mean those resulting from the hydrolysis of, for example, Example, silicon alkoxide bonds formed intermediates and their secondary products formed by condensation reactions, as already in the prior art, for example in US 7531243 B2, US 7157147 B2, US 7763335 B2, US 2017/0009034 A1 or US 7560168 B2, is disclosed ,
- the composition of the formulation as well as the barrier layer than concentrations of the substances of formula RSi (OX) 3 to use concentrations of the corresponding hydrolyzate condensates. For example, instead of the concentration of the tetraalkoxysilane, the concentration of the hydrolyzate condensate S1O2 (silica) is calculated.
- the formulation according to the invention preferably has in its aqueous solvent mixture at least one acid, preferably a nonvolatile acid.
- the non-volatile acid is selected from the group comprising phosphoric acid, maleic acid, malonic acid, acetylsalicylic acid, polyacrylic acid, sulfuric acid, their acid anhydrides or mixtures thereof.
- the content of non-volatile acid in the formulation is in a range of 0.03 wt .-% to 3 wt .-%, preferably from 0, 1 wt .-% to 1 wt .-%, particularly preferably from 0.2 wt .-% to 0.7 wt .-%, based on the solids content of the formulation is.
- the polyisocyanurate bearing alkoxysilylalkyl units preferably has the formula (II) (R'-NCO) n (II)
- R ' is an alkylene radical having at least 3 C atoms, preferably having 3 C atoms, to which a Trialkoxysilyl distr, preferably a Trinne- thoxysilyl group is bound. Particularly preferably, this is found under the CAS registration no. 261 15-70-8 disclosed tris [3- (trimethoxysilyl) propyl] isocyanurate use in the formulation.
- the content of the hydrolyzate of the alkoxysilylalkyl-units-carrying polyisocyanurate of the formula (II) is from 1% by weight to 10% by weight, based on the solids content of the formulation.
- the hydroxyl-bearing polymer is preferably selected from the group consisting of polyvinyl alcohols, ethylene-vinyl alcohol copolymers, wherein the degree of saponification is preferably above 85%, preferably above 95% and wherein the proportion of ethylene units in the ethylene-vinyl alcohol copolymer is preferably less than 28% by weight, based on the mass of the ethylene-vinyl alcohol copolymer.
- Suitable polymers are commercially available, for example under the trademarks Poval®, Mowiol®, Eval® and Exceval® from the company Kuraray, Soarnol® from the company Nippon Gohsei. They differ in their molecular weight, versatility degree and ethylene content.
- the degree of saponification is understood to mean the proportion of free hydroxyl groups in the hydroxyl-bearing polymer and is taken from the manufacturer's instructions.
- the content of the hydroxyl group-carrying polymer is preferably from 15% by weight to 25% by weight, particularly preferably from 17% by weight to 22% by weight, based on the solids content of the formulation.
- Another object of the present invention is a process for the preparation of the inventive formulation, characterized by the steps:
- Another object of the present invention is a laminate structure having at least 2 layers, comprising:
- a substrate with a glass transition temperature Tg> 60 ° C, preferably Tg> 90 ° C. which is free of inorganic oxide layers from gas phase deposition processes.
- a substrate is understood as meaning a plastic film, in particular transparent plastic films having a glass transition temperature Tg> 60 ° C., preferably Tg> 90 ° C.
- plastic films based on polyesters for example polyethylene terephthalate (PET).
- Advantageous laminates or laminate structures have transparent substrates. It is likewise advantageous if the substrate is separated from both sides, i. H. the front and back or the top and bottom of the substrate is coated with the formulation of the invention.
- the laminate structure according to the invention is characterized in that it has an oxygen transmission rate OTR after steam sterilization, ie after the "retort treatment" has taken place, up to a maximum of 4 cm 3 / m 2 / d / atm.
- a further subject of the present invention is a process for producing a laminate structure, which comprises the following steps:
- first post-treatment with energy input preferably as a thermal treatment
- second aftertreatment under the conditions of steam sterilization.
- the substrate or plastic film may optionally be pretreated or activated to improve the adhesion of the barrier layer resulting from the formulation.
- Particularly suitable as activation methods are plasma, corona, dielectric barrier discharge (DBE) or UV radiation with ozone.
- the coating of the substrate or the plastic film with the erfindungsmänch formulation is carried out using conventional coating methods. Nonlimiting examples include doctor blade coating method, slot die coating, roller coating, gravure coating, spray coating method and dip coating method.
- the first step of the aftertreatment is preferably carried out thermally, preferably as drying, preferably directly after the coating; Preferably, drying is carried out with warm air or hot blower. The drying may also be part of the subsequent second post-treatment step.
- the thermal post-treatment step is preferably carried out at temperatures of 100 to 320 ° C, preferably from 120 ° C to 300 ° C.
- the first post-treatment step may also be by energy input from other sources such as electron beam, plasma or microwave radiation or a combination thereof.
- An advantage of the method according to the invention for producing a laminate structure is that it has no method step in which a vapor deposition takes place.
- Embodiment 1 E (Inventive)
- Barrier-forming layers are prepared from a formulation.
- the formulation consists of the mixture of stock solutions (A), (B), (C) and (D) as follows:
- 10 g of isopropyl alcohol, 1 1 submitted 6 g of water, 500 mg of acetic acid, 17.9 g of tetraethoxysilane within 4 h with vigorous stirring added dropwise and the remaining 60 g of water added. Then the solution is ripened for another hour. The pH of the solution is monitored with indicator paper and is in the range of 3.5 to 4, 1.
- Stock solution (D) 4% by weight solution of phosphoric acid in water.
- the formulation is coated on both sides of the 50 ⁇ m PET film previously activated with UV / ozone by means of an automatic film-drawing apparatus equipped with a 12 ⁇ m spiral doctor blade and, after coating, dried for 1 minute at 100 ° C. Subsequently, the PET film with the barrier-forming layers is converted on both sides for 20 h at 140 ° C in a barrier film or laminate structure.
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is less than 0, 1 cm 3 / m 2 / d / atm.
- a second part of these Lami- nat Jardin is treated for 16 h at 99 ° C and 98% relative humidity for the purpose of sterilization ("retort treatment").
- the oxygen transmission rate of this sterilized barrier film at 23 ° C and 90% relative humidity is less than 0.4 cm 3 / m 2 / d / atm.
- Embodiment 2E (Inventive)
- the pH is in a range of 3.5 to 4.0.
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is less than 0.1 cm 3 / m 2 / d / atm.
- a second part of this laminate structure is treated for 16 h at 99 ° C and 98% relative humidity for the purpose of sterilization ("retort treatment").
- the oxygen transmission rate of this laminate structure at 23 ° C and 90% relative humidity is less than 0.8 cm 3 / m 2 / d / atm.
- Embodiment 3E (Inventive)
- the pH is in a range of 3.5 to 4, 1.
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is less than 0, 1 cm 3 / m 2 / d / atm.
- a second part of this laminate structure is treated for 16 h at 99 ° C and 98% relative humidity for the purpose of sterilization ("retort treatment").
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is 1, 3 cm 3 / m 2 / d / atm.
- Embodiment 4E (Inventive)
- the pH is in a range of 3.5 to 4.0.
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is less than 0.1 cm 3 / m 2 / d / atm.
- a second part of this laminate structure is treated for 16 hours at 99 ° C and 98% relative humidity for the purpose of sterilization ("retort treatment").
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is 4 cm 3 / m 2 / d / atm.
- Embodiment 5E (Inventive)
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is less than 0, 1 cm 3 / m 2 / d / atm.
- a second part of this laminate structure is treated for 16 hours at 99 ° C and 98% relative humidity for the purpose of sterilization ("retort treatment").
- the oxygen transmission rate OTR of this laminate structure at 23 ° C. and 90% relative atmospheric humidity is 0.9 cm 3 / m 2 / d / atm.
- Embodiment 6E (Inventive)
- the pH is in a range of 3.5 to 4, 1.
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is less than 0, 1 cm 3 / m 2 / d / atm.
- a second part of this laminate structure is treated for 16 h at 99 ° C and 98% relative humidity for the purpose of sterilization ("retort treatment").
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is 2 cm 3 / m 2 / d / atm.
- Embodiment 7E (Inventive)
- the pH is in a range of 3.5 to 4, 1.
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is less than 0, 1 cm 3 / m 2 / d / atm.
- a second part of this laminate structure is treated for 16 h at 99 ° C and 98% relative humidity for the purpose of sterilization ("retort treatment").
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is 2 cm 3 / m 2 / d / atm.
- Embodiment 8E (Inventive)
- the coating and aftertreatment takes place as in the preceding exemplary embodiments.
- Example 2 Analogously to Example 1, but in the stock solutions (A) and (C) instead of 500 mg of acetic acid (100%) in each case 500 mg hydrochloric acid with 10 wt .-% HCl used.
- the preparation took less than 30 minutes, the pH of the stock solutions is ⁇ 2.
- the pH of the formulation used to coat a PET film according to Embodiment 1 is in a range of 1.5 to 1.2.
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is less than 0, 1 cm 3 / m 2 / d / atm.
- a second part of this laminate structure is treated for 16 h at 99 ° C and 98% relative humidity for the purpose of sterilization ("retort treatment").
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is 22 cm 3 / m 2 / d / atm.
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is less than 0, 1 cm 3 / m 2 / d / atm.
- a second part of this laminate structure is treated for 16 h at 99 ° C and 98% relative humidity for the purpose of sterilization ("retort treatment").
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is 13 cm 3 / m 2 / d / atm.
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is less than 0, 1 cm 3 / m 2 / d / atm.
- a second part of this laminate structure is treated for 16 h at 99 ° C and 98% relative humidity for the purpose of sterilization ("retort treatment").
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is 23 cm 3 / m 2 / d / atm. Veraleich example 4V
- the oxygen transmission rate OTR of this laminate structure at 23 ° C and 90% relative humidity is less than 0, 1 cm 3 / m 2 / d / atm.
- a second part of this laminate structure is treated for 16 h at 99 ° C and 98% relative humidity for the purpose of sterilization ("retort treatment").
- the oxygen transmission rate OTR of this laminate structure at 23 ° C. and 90% relative humidity is 20 cm 3 / m 2 / d / atm.
- the at least one hydrolyzate of at least one polyisocyanurate bearing alkoxysilylalkyl units in particular that disclosed under CAS Registry Nos. 261 155-70-8, and a pH of 1, 8 - 4.7, preferably 3 - 4.5.
- the laminate structures made therefrom according to the invention can be produced in a simplified manner compared to the prior art and also show acceptable values of the oxygen transmission rate OTR after a steam sterilization ("retort treatment”), so that they can be used as packaging material, for example for foodstuffs and pharmaceutical products.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Laminated Bodies (AREA)
- Wrappers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP17205657.4A EP3495436A1 (de) | 2017-12-06 | 2017-12-06 | Wasserdampfsterilisierbare transparente barriereschichten gegen sauerstofftransmission für verpackungsmaterialien |
| PCT/EP2018/083572 WO2019110632A1 (de) | 2017-12-06 | 2018-12-05 | Wasserdampfsterilisierbare transparente barriereschichten gegen sauerstofftransmission für verpackungsmaterialien |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3720918A1 true EP3720918A1 (de) | 2020-10-14 |
Family
ID=60915150
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17205657.4A Ceased EP3495436A1 (de) | 2017-12-06 | 2017-12-06 | Wasserdampfsterilisierbare transparente barriereschichten gegen sauerstofftransmission für verpackungsmaterialien |
| EP18811044.9A Withdrawn EP3720918A1 (de) | 2017-12-06 | 2018-12-05 | Wasserdampfsterilisierbare transparente barriereschichten gegen sauerstofftransmission für verpackungsmaterialien |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17205657.4A Ceased EP3495436A1 (de) | 2017-12-06 | 2017-12-06 | Wasserdampfsterilisierbare transparente barriereschichten gegen sauerstofftransmission für verpackungsmaterialien |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20200385526A1 (de) |
| EP (2) | EP3495436A1 (de) |
| JP (1) | JP2021505707A (de) |
| BR (1) | BR112020011142A2 (de) |
| IL (1) | IL275063A (de) |
| MX (1) | MX2020005795A (de) |
| WO (1) | WO2019110632A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3838592A1 (de) | 2019-12-17 | 2021-06-23 | Evonik Operations GmbH | Zusammensetzung enthaltend polyester für die generative fertigung |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1428657A4 (de) | 2001-09-18 | 2005-04-13 | Tokuyama Corp | Gassperrfilm und gassperrüberzugsmittel sowie verfahren zu deren herstellung |
| US7560168B2 (en) | 2002-11-22 | 2009-07-14 | Toppan Printing Co., Ltd. | Gas barrier laminate film |
| JP4491196B2 (ja) | 2003-03-31 | 2010-06-30 | 富士フイルム株式会社 | ガスバリア性積層フィルム及びその製造方法、並びに該フィルムを用いた基板及び画像表示素子 |
| CA2547567C (en) | 2003-12-03 | 2013-07-02 | Kuraray Co., Ltd. | Gas barrier layered product and packaging medium, and method for producing gas barrier layered product |
| EP3130459B1 (de) | 2014-03-31 | 2021-05-05 | Dai Nippon Printing Co., Ltd. | Gasbarrierenlaminatfilm und verfahren zur herstellung davon |
-
2017
- 2017-12-06 EP EP17205657.4A patent/EP3495436A1/de not_active Ceased
-
2018
- 2018-12-05 BR BR112020011142-2A patent/BR112020011142A2/pt not_active Application Discontinuation
- 2018-12-05 WO PCT/EP2018/083572 patent/WO2019110632A1/de not_active Ceased
- 2018-12-05 MX MX2020005795A patent/MX2020005795A/es unknown
- 2018-12-05 JP JP2020529593A patent/JP2021505707A/ja active Pending
- 2018-12-05 EP EP18811044.9A patent/EP3720918A1/de not_active Withdrawn
- 2018-12-05 US US16/767,205 patent/US20200385526A1/en not_active Abandoned
-
2020
- 2020-06-02 IL IL275063A patent/IL275063A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| MX2020005795A (es) | 2020-08-20 |
| WO2019110632A1 (de) | 2019-06-13 |
| US20200385526A1 (en) | 2020-12-10 |
| BR112020011142A2 (pt) | 2020-11-17 |
| IL275063A (en) | 2020-07-30 |
| JP2021505707A (ja) | 2021-02-18 |
| EP3495436A1 (de) | 2019-06-12 |
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