WO2001066662A2 - Adhesif lamine possedant des bis-silanes, des acrylates multifonctionnels et des acides ethyleniquement insatures - Google Patents

Adhesif lamine possedant des bis-silanes, des acrylates multifonctionnels et des acides ethyleniquement insatures Download PDF

Info

Publication number
WO2001066662A2
WO2001066662A2 PCT/US2001/005490 US0105490W WO0166662A2 WO 2001066662 A2 WO2001066662 A2 WO 2001066662A2 US 0105490 W US0105490 W US 0105490W WO 0166662 A2 WO0166662 A2 WO 0166662A2
Authority
WO
WIPO (PCT)
Prior art keywords
group
silane
bis
substrate
acrylate
Prior art date
Application number
PCT/US2001/005490
Other languages
English (en)
Other versions
WO2001066662A3 (fr
Inventor
Lisa M. Seibel
Shrenik M. Nanavati
John E. Wyman
Imtiaz J. Rangwalla
Original Assignee
Dow Corning Corporation
Eg Technology Partners, L.P.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Corning Corporation, Eg Technology Partners, L.P. filed Critical Dow Corning Corporation
Priority to AU2001238580A priority Critical patent/AU2001238580A1/en
Publication of WO2001066662A2 publication Critical patent/WO2001066662A2/fr
Publication of WO2001066662A3 publication Critical patent/WO2001066662A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/04—Acids; Metal salts or ammonium salts thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F230/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal
    • C08F230/04—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal
    • C08F230/08—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon
    • C08F230/085—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing a metal containing silicon the monomer being a polymerisable silane, e.g. (meth)acryloyloxy trialkoxy silanes or vinyl trialkoxysilanes

Definitions

  • the invention relates to silicon containing laminates having barrier and adhesive properties which are useful in packaging applications.
  • barrier adhesives represent a significant advance in the art. However, it has been observed that while the barrier properties of the prior art coatings are excellent in environments at relative humidities of 80% or less, their performance suffers significantly at relative humidities of 90% or more.
  • the present inventors have surprisingly discovered that the combination of a bis-silane, a multifunctional acrylate, an optional aminofunctional silane, and an ethylenically unsaturated acid, gives excellent gas barrier properties at low to moderate relative humidity values, as well as excellent gas barrier properties at very high relative humidity values of 90% or more.
  • the key improvement is the addition of bis-silane, which results in excellent barrier at humidities of greater than 90%.
  • U.S. Patent No. 5,368,941 teaches a deformable, abrasion-resistant coating formulated from at least one multi-functional acrylate monomer, at least one aminofunctional silane, colloidal silica and at least one acrylate- terminated polyalkylene oxide, but does not teach the addition of an ethylenically unsaturated acid.
  • the acrylate-terminated polyalkylene oxide helps prevent gelling of the coating composition during stripping and also imparts the composition with deformability, without sacrificing abrasion resistance.
  • U.S. Patent No. 5,434,007 teaches a silane resin coated on a plastic film, where the silane resin is composed of a monofunctional acrylate and an aminofunctional silane.
  • the composition does not utilize a free radical cure, nor does it incorporate the ethylenically unsaturated acid.
  • U.S. Patent Nos. 5,260,350 and 5,374,483 relate to a silicone coating composition which, when cured on a solid substrate either by ultraviolet or electron beam radiation, provides a transparent abrasion resistant coating firmly adhered thereon.
  • the silicone coating is prepared by reacting at least one multifunctional acrylate monomer with an amino-organofunctional silane, mixing the modified silane with at least one acrylic monomer and thereafter adding colloidal silica. Again however, neither of these compositions teach the addition of an ethylenically unsaturated acid to achieve barrier properties.
  • JP (Kokai) publication 7-18221 published on January 20, 1995 teaches a surface treatment composition for gas barrier comprising an aminosilane and a compound having an aromatic ring or hydrogenated ring.
  • the present invention is distinguishable, however, because it does not require the addition of cyclic compounds having an aromatic ring.
  • the present invention is distinguishable from the prior art because none teach the addition of a bis-silane to achieve improved gas barrier properties, or adhesive characteristics.
  • the invention is a method of laminating two substrates comprising coating at least one side of a substrate with a laminating adhesive, bringing a coated side of said substrate into contact with a second substrate to form a multi-layer film, and treating said multi-layer film with a free radical initiator, wherein said laminating adhesive is the reaction product of a multifunctional acrylate, a bis-silane, an optional aminofunctional silane, and an ethylenically unsaturated acid, optionally dissolved in a solvent, wherein the multifunctional acrylate has a molecular weight of from 100 to 3000, and the bis-silane has at least one molecule of the formula
  • each R is a hydrocarbon group
  • each X is an alkoxy group
  • each R ⁇ is a divalent hydrocarbon group having 1 to 12 carbon atoms; b is from 0 to 3 and p is 0 or 1; and the optional aminofunctional silane has the formula
  • a is 0-4, i.e., 0 ⁇ a ⁇ 4;
  • R ⁇ > is independently hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl, acryl, methacryl, alkylaryl, R ⁇ - SiR m (OR)3_ m , or an alkylene linking group having 2 to 12
  • R ⁇ is an R4 - SiR m (OR)3_ m group, where m is 0, 1 or 2, and R is
  • R ⁇ is independently selected from the group consisting of linear or branched alkylene groups having from 1 to 12 carbon atoms; arylene groups having from 6 to 12 carbon atoms; and linear or branched hydrocarbon groups having from 1 to 16 carbon atoms and at least one alcohol, alcohol ether, ester, amide, urea, thiourea or polyether group.
  • the laminate can be made from a variety of substrates.
  • the laminate can then be used alone or with other substrates to give structural or barrier properties to packaging containers.
  • the laminate adhesive can be further cured by drying in the presence of water prior to exposure to the free radical initiator.
  • the free radical initiator can be electron beam irradiation, ultraviolet radiation, gamma radiation, and/or heat and chemical free radical initiators.
  • a laminate according to the present invention may be employed to provide a barrier which simultaneously adheres two substrates together and improves resistance of the material to
  • a 30 ⁇ m uncoated biaxially oriented, corona treated polypropylene film is generally found to have a permeability to oxygen
  • the oxygen transmission rate of the same film can be reduced to less than 250cc/m2/day as measured at 90% relative humidity.
  • improved barrier refers to a laminate which can reduce oxygen transmission rate of the
  • the key to the present invention is a bis-silane described by the general formula
  • each R is preferably a hydrocarbon group
  • Each X is an alkoxy group with 1 to 4 carbon atoms, a halogen atom, an oxime group or an acyloxy group, of these methoxy and ethoxy
  • R ⁇ may be a divalent
  • each R ⁇ has from 2 to 3 carbon atoms.
  • Each b is from 0 to 3 but is most preferably 0, and p is 0 or 1. The best results are
  • each X is a methoxy group
  • each R ⁇ is a propylene group
  • b is 0,
  • p is 0, i.e. when the compound is bis-(gamma-trimethoxysilylpropyl)amine.
  • disilylated secondary amines used in the present invention may be prepared by processes known in the art for example, as disclosed in US Patent Nos. 2,832,754, 2,920,095 and 5,101,055. Multifunctional Acrylates
  • the multifunctional acrylates of the present invention are defined as acrylates having, on average, greater than two functional acrylate groups per molecule and a molecular weight of from about 100 to about 3000. Multifunctional acrylates are preferred over monofunctional acrylates because monofunctional acrylates do not form flexible, crack free coatings as do the multifunctional acrylates. The majority of multifunctional acrylates commercially available can be used, but it is the smaller, more compact, i.e., proportionally more reactive acrylates that give the best results.
  • the multifunctional acrylates are preferably selected from the group consisting of acrylated polyols with molecular weights of from about 150 to about 600; polyester urethane acrylates with molecular weights of from about 1000 to about 2000; polyether acrylates with molecular weights from 200 to 1500; polyurethane acrylates with molecular weights of from about 400 to about 2000; polyurea acrylates with molecular weights of from about 400 to about 2000; epoxy acrylates with molecular weights of from about 300 to about 1000; and mixtures of multifunctional acrylates thereof.
  • acrylates are pentaerythritol tetraacrylate; an acid functional acrylate;
  • polyester tetra acrylate polyester tetra acrylate; polyether tetra acrylate; an aliphatic urethane acrylate, Ebecryl® 1290;
  • ditrimethylolpropane tetra acrylate an ethoxylated trimethylol propane triacrylate, Ebecryl® 160.
  • Other preferred acrylate include glycerol triacrylate, triacrylate ester of tris-[2-hydroxy- ethyl] isocyanurate, hexane dioldiacrylate, and dipentaerythritol hexacrylate. Ethoxylated and propoxylated versions of these acrylates may be used in this invention.
  • These acrylates and methods of their production are well known in the art, and available commercially from such companies as UCB Radcure, (Smyrna, GA) and Sartomer Corp. (Exton, PA).
  • mixtures of multifunctional acrylates means mixtures of different acrylates of the same species, such as two different epoxy acrylates, or mixtures of different species of acrylates, such as epoxy acrylates and urethane acrylates.
  • ethylenically unsaturated acid it is meant any acid which has vinyl unsaturation. It is believed that the ethylenically unsaturated acid substantially improves the oxygen barrier performance of the composition because the carboxylic group forms an amine salt with amino groups of the bis-silane, which contributes significantly to the coating's barrier properties.
  • the ethylenically unsaturated acid is likely to be added in the amount of at least 5 to about 60 parts by weight of the composition, with about 30 to about 50 parts by weight being most preferred.
  • ethylenically unsaturated acids used in the present invention are dicarboxylic (i.e. have two carboxylic acid groups) and the most preferred is itaconic acid; however, other acids such as fumaric, maleic, citraconic, methacrylic, cinnamic, vinyl sulfonic acid, mesaconic acid, and itaconic acid monomethylester may also be used.
  • ethylenically unsaturated acid as used herein includes mixtures of one or more of the aforementioned acids.
  • a is 0-4, i.e., 0 ⁇ a ⁇ 4;
  • R3 is independently hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, arylalkyl,
  • R ⁇ is an R ⁇ - SiR m (OR) 3 _ m group, where m is 0, 1 or 2, and R is
  • R4 is independently selected from the group consisting of linear or branched alkylene groups having from 1 to 12 carbon atoms; arylene groups having from 6 to 12 carbon atoms; and linear or branched hydrocarbon groups having from 1 to 16 carbon atoms and at least one alcohol, alcohol ether, ester, amide, urea, thiourea or polyether group.
  • the most preferred optional aminofunctional silanes useful for the present invention are N-(2-aminoethyl)-3-aminopropyltrimethoxy silane, aminopropyltriethoxysilane, and blends thereof.
  • R ⁇ is a monovalent radical independently selected from the group consisting of hydrogen; acryl, methacryl, alkyl groups having 1 to 18 carbon atoms, such as methyl, ethyl, propyl, isobutyl, hexyl, octyl, decyl, dodecyl and octadecyl; substituted alkyl having 1 to 18 carbon atoms, such as 3-chIoropropyl and 3,3,3-trifluoropropyl; aryl having 6 to 16 carbon atoms, such as phenyl and naphthyl; substituted aryl having 6 to 30 carbon atoms, such as chlorophenyl, chlorotolyl and dichloroxylyl; arylalkyl having 7 to 9 carbon atoms, such as benzyl, phenethyl and 3-phenylpropyl; and alkylaryl having 7 to 16 carbon atoms, such as
  • At least one R ⁇ group is
  • R is an R ⁇ - SiR m (OR)3_ m group, where R is an alkyl group
  • R ⁇ is defined below.
  • the remaining R ⁇ groups on the aminosilane are preferably hydrogen or methyl.
  • R3 can also be an alkylene linking group which links two different nitrogen atoms together, thus forming a cyclic aminosilane.
  • the alkylene linking group can also be an arylene group which is connected to the same nitrogen atom.
  • the alkylene linking group will have at least 2 carbon atoms and as many as 12 carbon atoms.
  • R4 is an organic connecting group which provides a separation of at least one carbon
  • R ⁇ can be an alkylene group having at least 1 carbon atom or an arylene group having at least 6 carbon atoms.
  • R4 is selected from the group consisting of ethylene, propylene, butylene, isobutylene, trimethylene, tetramethylene, and hexamethylene.
  • R ⁇ can contain polar groups such as, linear or branched hydrocarbon groups having from 1 to 16 carbon atoms and at least one alcohol, alcohol ether, ester, amide, urea, thiourea or polyether group. Specific examples of such groups include, those having the general
  • hydroxyl and ester groups are highly polar, and it is believed the polar nature of the groups improve barrier properties.
  • Examples of specific amine-containing groups include such structures as -CH 2 CH 2 CH 2 NH , -CH 2 CH 2 CH 2 N(H)CH 2 CH 2 NH 2 ,
  • a specific example of an amine containing cyclic group is piperazine.
  • aminofunctional silane can mean a single species of the formula described above, such as N-(2-aminoethyl)-3-aminopropyltrimethoxy silane, or it can mean mixtures or one or more species of aminofunctional silanes, such as N-(2-aminoethyl)-3-aminopropyltrimethoxy silane and aminopropyltriethoxysilane.
  • aminofunctional silanes can be prepared by methods known to those skilled in the art, and which are amply described in the chemical literature.
  • the components of the present invention can optionally be reacted together in a solvent.
  • a solvent In general, water, alcohols and blends thereof will serve as suitable solvents because the multifunctional acrylate and the ethylenically unsaturated acid are soluble therein.
  • the solvent is an alcohol.
  • the selected solvent must wet the substrate. Preferably, the solvent will not extend the drying time of the coating beyond what is commercially acceptable.
  • the amount of solvent can range from about 0% to about 99% and is preferably from about 5% to about 95 parts by weight of the total composition.
  • Preferred solvents are methanol, ethanol, n-propanol, isopropanol, butanol, and l-methoxy-2-propanol (available as "Dowanol® PM” from the Dow Chemical Co., Midland, MI).
  • Critical Ratios are methanol, ethanol, n-propanol, isopropanol, butanol, and l-methoxy-2-propanol (available as "Dowanol® PM" from the Dow Chemical Co., Midland, MI).
  • the reaction of bis-silanes with m tifunctional acrylates it is possible to utilize an excess of multifunctional acrylate over and above that required to react with the amino nitrogen atoms.
  • multifunctional acrylates such as pentaerythritol tetraacrylate
  • the amine chains attached to the trimethoxysilyl groups may also have pendent acrylate groups which will undergo further polymerization under the influence of ionizing radiation. It is believed that, under the appropriate experimental conditions, the acrylate groups of the multifunctional acrylate and the amino groups of the bis-silane and or aminofunctional silanes undergo an addition reaction (Michael Addition) upon mixing of these two components.
  • hydroxyl groups and solvents present may interact with alkoxy groups attached to the silicone atoms of the bis-silanes and/or aminofunctional silane and cause a thickening of the composition at certain concentrations of the components in the solvent.
  • the total number of amine functional sites in the composition due to the bis-silanes and/or aminofunctional silane can be up to about five (5) times greater than the total number of acrylate sites in the composition due to the multifunctional acrylate, i.e., the ratio of amine functionality to the acrylate functionality can be from about 5 : 1 to about 1:1, with a ratio of about 3 : 1 to about 1 : 1 being preferred, and with a ratio of 1.1 : 1 being most preferred.
  • the ratios in the amine rich system can be expressed in terms of molar ratios, with the preferred molar ratio of bis-silane to multifunctional acrylate being from about 6:1 to about 4:1, with a molar ratio of about 4:1 being most preferred.
  • the ratio of amine functionality to acrylate functionality can be from about 1 : 1 to about 1:10, with a range of about 1 : 1 to about 1 :6 being preferred, and with a ratio of 1 :5 being most preferred.
  • the ratios of the acrylate rich system can be expressed in terms of molar ratios, with the preferred molar ratio of aminosilane to multifunctional acrylate being from about 1 :1 to about 1 :3, with a molar ratio of about 1 : 1.2 being most preferred.
  • the bis-silanes and the acrylate component can be added together to form a Michael Adduct, before the addition of the ethylenically unsaturated acid.
  • the ethylenically unsaturated acid may be added at some point after the Michael Addition reaction begins, but before the bis-silanes and/or the acrylate are completely consumed. "Quenching" the reaction by adding the ethylenically unsaturated acid can occur at any point in the reaction process, i.e., the acid may be added to the bis-silanes before any acrylate is added, or after some of the acrylate is added.
  • the reaction may be quenched at a predetermined point by simply adding part of the acrylate to the bis-silanes, then adding the rest of the acrylate and the acid to this mixture. It is preferred that the quenching technique be used where the acid is first added to the bis-silanes or mixture of bis-silane/aminosilane prior to the addition of any acrylate.
  • the adhesive can be applied in any desired amount, however, it is preferred that the
  • Adhesive thickness can be determined by Scanning Electron Microscopy.
  • the adhesive can be applied to the substrate by any conventional method, such as spray coating, roll coating, slot coating, meniscus coating, immersion coating, and direct, offset, and reverse gravure coating.
  • the adhesive can be disposed on a wide variety of substrates, including, but not limited to polyolefins, such as oriented polypropylene (OPP), cast polypropylene, polyethylene and polyethylene copolymers, polystyrene, polyesters, such as polyethylene terephthalate (PET), or polyethylene naphthalate (PEN), polyolefin copolymers, such as ethylene vinyl acetate, ethylene acrylic acid and ethylene vinyl alcohol (ENOH), polyvinylalcohol and copolymers thereof, polyamides such as nylon and meta-xylene adipamide (MXD6), polyimides, polyacrylonitrile, polyvinylchloride, polyvinylidene chloride, and polyacrylates, ionomers, polysaccharides, such as regenerated cellulose, and silicone, such as rubbers or sealants, other natural or synthetic rubbers, glassine or clay coated paper, paper board or craft paper, and metallized polymer films and vapor deposited metal
  • SiO x SiO x
  • TiO x TiO x
  • the aforesaid substrates are likely to be in the form of a film or sheet, though this is not obligatory.
  • the substrate may be a copolymer, a laminate, a coextrudate, a blend, a coating or a combination of any of the substrates listed above according to the compatibility of the materials with each other.
  • the substrate may be in the form of a rigid container made from materials such as polyethylene, polypropylene, polystyrene, polyamides, PET, ENOH, or laminates containing such materials.
  • compositions of the present invention can be used for a wide variety of packaging containers, such as pouches, tubes, bottles, vials, bag-in-boxes, stand-up pouches, gable top cartons, thermo-formed trays, brick-packs, boxes, cigarette packs and the like.
  • packaging containers such as pouches, tubes, bottles, vials, bag-in-boxes, stand-up pouches, gable top cartons, thermo-formed trays, brick-packs, boxes, cigarette packs and the like.
  • the compositions of the present invention may be used as a laminating adhesive.
  • the present invention is not limited to just packaging applications, and may be used in any application wherein gas, or aroma barrier properties are desired, such as tires, buoyancy aides, inflatable devices generally, etc.
  • any of the foregoing substrates may have a primer or primers applied thereon.
  • the primers are applied to the substrates by methods known in the art such as spray coating, roll coating, slot coating, meniscus coating, immersion coating, and indirect, offset, and reverse gravure coating.
  • Suitable primers include, but are not limited to carbodiimide, polyethylenimine, and silanes, such as N-(2-aminoethyl)-3-aminopropyltrimethoxy silane and aminopropyltriethoxysilane.
  • the most preferred laminate structures are (where Si represents the coating composition of this invention), OPP/Si/OPP, OPP/Si/PE, metOPP/Si/OPP, metOPP/Si/PET, metal oxide coated PET/Si PE, metal oxide coated OPP/Si/PE, metal oxide coated PET/Si/PP, metal oxide coated OPP/Si PP, and PE/Si/PE. Curing
  • compositions of the present invention will form films at ambient conditions, optimum results are achieved by heating and/or free radical cures of the laminate structure.
  • the first substrate may be exposed to heat and/or moisture prior to lamination of the second substrate.
  • the upper limit to the drying temperature is the temperature at which the substrate will undergo unacceptable distortion.
  • temperature will accelerate the rate of hydrolysis of silicon/alkoxy groups and also the rate of condensation of the silicon/alkoxy groups with silicon/hydroxy groups to form silicon-oxygen-silicon groups.
  • the composition may be dried at room temperature or in an oven at temperatures up to about 140°C, with temperatures of from about 60°C to about 120°C being preferred and temperatures of about 90°C to about 110°C being most preferred.
  • Heating time is temperature dependent and the coating will reach tack free time in one to 10 seconds. The heating step serves to evaporate the solvent and accelerate the condensation reaction between Si-OH groups and SiOH/SiOH groups.
  • compositions are further cured by initiating a free radical reaction after the second substrate is contacted with the first substrate.
  • the most preferred method of initiating the free radical reaction is through the use of electron beam radiation, although ultraviolet or free radical generators such as azo compounds and peroxides may also be used.
  • compositions are preferably cured by a free radical generator, such as ultraviolet, electron beam, or gamma radiation or chemical free radical generators such as azo compounds and peroxides.
  • a free radical generator such as ultraviolet, electron beam, or gamma radiation or chemical free radical generators such as azo compounds and peroxides.
  • Low energy electron beam is the preferred method of curing because it is cheaper than gamma sources like Cobalt M-60. Its advantage over ultraviolet radiation as a cure system lies in its ability to generate free radicals without photoinitiators. It also imparts higher yields of crosslink density and chemical grafting of the coating to the substrate.
  • Electron beam accelerators of various types such as van de Graaf-type, resonance transformer-type, linear-type, dynamatron-type and high frequency-type can be used as a source of electron beam. Electron beams having energy of from about 5 to about 2000 KeN, preferably from about 50 to about 300 KeN discharged therefrom may be irradiated in a
  • MR Magnetic resonance Imaging
  • Low electron beam voltages (less than 20 KeN) may be used if the substrate is treated in a vacuum.
  • Commercially available sources of electron beam are Electro Curtain CB-150 available from Energy Sciences, Inc. (Wilmington, MA).
  • the compositions may also be ultraviolet light cured if one or more photoinitiators is added prior to curing. There are no special restrictions on the photoinitiators as long as they can generate radicals by the absorption of optical energy.
  • Ultraviolet light sensitive photoinitiators or blends of initiators used in the UN cure of the present composition include 2-hydroxy-2- methyl-1-phenyl-propan-l-one (Darocure 1173), sold by EM Chemicals, and 2,2 Dimethoxy-2- phenyl-acetol-phenone (Irgacure 651), sold by Ciba-Geigy Corporation, Hawthorne, New York.
  • Darocure 1173 2-hydroxy-2- methyl-1-phenyl-propan-l-one
  • Irgacure 651 2,2 Dimethoxy-2- phenyl-acetol-phenone
  • amine silane materials In addition to radical polymerization and grafting to crosslink the coating after it has been applied to the film substrate, it is possible to further crosslink the amine silane materials utilizing acid catalyzed condensation reactions.
  • a methoxylated active hydrogen compound such as trimethylol phenol, or a mixture of formaldehyde with aldehydes, ketones, and other active hydrogen compounds react with amine salts, such as the itaconate salts of the amine silanes or derivatives to form alkylated amines.
  • the bis-silane component preferably bis-(gamma-trimethoxysilylpropyl)amine) (4 g) is dissolved in a solvent such as methanol. Itaconic acid (2 g) is added to this solution. This mixture is allowed to equilibrate for one hour.
  • the acrylate preferably pentaerythritol tetraacrylate (PETA) (2 g), is added to the above solution and the mixture is allowed to equilibrate for 15 hours at ambient conditions.
  • PETA pentaerythritol tetraacrylate
  • coating solution is applied to corona treated 30 ⁇ m thick oriented polypropylene film from UCB Films (product # T217/30) and the coated film is allowed to dry under ambient conditions for 20 minutes.
  • Another piece of corona treated OPP film is placed on top of the dried coating and the composite is passed through a hot roll laminator (Chem Instruments HL 101 Hot Roll
  • additives can be added to the composition to improve various properties. These additives may be added as desired and in any amount as long as they do not degrade the performance of the barrier coatings as illustrated herein.
  • additives include additional additives as earlier described, antiblock and slip aides such as stearamide oleamide or polar additives, such as epoxides, polyols, glycidols or polyamines, such as polyethylenimine, and other silanes such as N-(2-aminoethyl)-3-aminopropyltrimethoxy silane and aminopropyltriethoxysilane may also be added.
  • Wetting agents such as a polyethoxylated alkyl phenol may also be added.
  • the solvent employed in all the experiments described below was methanol.
  • the N-(2-amino ethyl)gamma aminopropyl trimethoxysilane (Z-6020) was obtained from Dow Corning Corporation (Midland, MI), the bis-( ⁇ -trimethoxysilylpropyl)amine (Al 170) from Witco, the
  • PET A pentaerythritol tetraacrylate
  • IT A itaconic acid
  • the oxygen permeability values for each film herein were measured and recorded in units of cc/square meter per 24 hours, "dry” values being measured at 0% relative humidity and “wet” values at 90%) relative humidity utilizing MOCON Oxtran 2/20 Series. Some of the laminates were also evaluated at 80% RH. The MOCON instruments were obtained from Modern Controls Corporation. For comparison, the polypropylene base film had a permeability of about 1200 cc/square meter/24 hours. The adhesive layer thickness was measured by means of Scanning Electron Microscopy (SEM). Experiment 1 - Z6020/PETA/ITA 50:25 :25wt
  • ITA (2g) was added to a solution of Z6020 (2g) and Al 170 (2g) in methanol (12g) and the resulting mixture stirred for 30 mins.
  • the acrylate (PET A, 2g) was added to this solution and the resulting mixture was stirred for 15 hours. This solution was used to coat the plastic film. After coating, drying, laminating and curing, the permeability was determined to be 3.4cc dry, 145cc at 80%RH and 279.2cc wet and the adhesive layer thickness was determined to be
  • ITA (2g) was added to a solution of bis-TMSEDA (6.45g) in methanol (9.55g) and the resulting mixture stirred for 30mins.
  • the acrylate (PETA, 2g) was added to this solution and the resulting mixture was stirred for 15 hours. This solution was used to coat the plastic film. After coating, drying, laminating and curing, the permeability was determined to be 8.09cc dry, 61.9cc at 80%RH and 155cc wet and the adhesive layer thickness was determined to be 3.6 ⁇ m.
  • OTR is oxygen transmission rate or oxygen gas permeability
  • Tt/Pt ⁇ sfPs + ⁇ cfPc
  • OPP was measured to be 30 microns thick and have an OTR of 1238cc/m.2/day as measured at 90%RH.
  • the coating solutions were all applied to corona treated 30 ⁇ m thick "Rayopp" oriented polypropylene film from UCB Films utilizing a #18 Myer rod. The coated film was allowed to dry under ambient conditions for 20 minutes. Another piece of corona treated OPP film was placed on top of the dried coating and the composite was passed through a hot roll laminator
  • ITA (2.48g) was added to a solution of bisTMSEDA (2.58g) in methanol (11.02g) and the resulting mixture stirred for 30mins.
  • the (Z6020/bis-silane)/PETA:ITA formulations were utilized in a weight ratio of 50:30:20 with a total solids content of 8 grams/20 grams of solution.
  • the solvent employed in all the experiments described below was methanol.
  • the Z6020 was obtained from Dow Corning Corporation (Midland, MI), the Silquest Al 170 from Witco, the TMSEDA from Gelest, the PETA from Sartomer and the itaconic acid from Acros Chemicals.
  • the coating solutions were all applied to corona treated 30 ⁇ m thick "Rayopp" oriented polypropylene film from UCB Films utilizing a #18 Myer rod. The coated film was allowed to dry under ambient conditions for 20minutes.
  • ITA (2.4g) was added to a solution of bisTMSEDA (6.45g) in methanol (9.55g) and the resulting mixture stirred for 30 minutes.
  • the acrylate (PETA, 1.6g) was added to this solution and the resulting mixture was stirred for 15 hours. This solution was used to coat the plastic film. After coating, drying, laminating and curing, the permeability was determined to be 5.4cc dry and 176.7cc wet and the adhesive layer thickness was determined to be 2.6 ⁇ m.
  • ITA (1.6g) was added to a solution of Z6020 (2.72g) in methanol (12g) and the resulting mixture stirred for 30 minutes.
  • the acrylate (PETA, 3.68g) was added to this solution and the resulting mixture was used 3 hours after making because it gelled when stirred for greater than 8 hours. This solution was used to coat the plastic film. After coating, drying, laminating and curing, the permeability was determined to be 16.7cc dry and 231.3cc wet and
  • ITA (1.6g) was added to a solution of Z6020 (1.36g) and Al 170 (1.36g) in methanol (12g) and the resulting mixture stirred for 30 minutes.
  • the acrylate (PETA, 3.68g) was added to this solution and the resulting mixture was stirred for 15 hours. This solution was used to coat the plastic film. After coating, drying, laminating and curing, the permeability was determined to be 40.7cc dry and 253.3cc wet and the adhesive layer thickness was determined to be 2.9 ⁇ m.
  • ITA (1.6g) was added to a solution of Al 170 (2.72g) in methanol (12g) and the resulting mixture stirred for 30 minutes.
  • the acrylate (PETA, 3.68g) was added to this solution and the resulting mixture was stirred for 15 hours. This solution was used to coat the plastic film. After coating, drying, laminating and curing, the permeability was determined to be 140.9cc dry and 231.8cc wet and the adhesive layer thickness was determined to be 3.0 ⁇ m.
  • Experiment 17 - bis-TMSEDA PETA/ITA 34:46:20wt ITA (1.6g) was added to a solution of bis-TMSEDA (4.39g) in methanol (10.33g) and the resulting mixture stirred for 30 minutes.
  • the acrylate (PETA, 3.68g) was added to this solution and the resulting mixture was stirred for 15 hours. This solution was used to coat the plastic film. After coating, drying, laminating and curing, the permeability was determined to be 91.9cc dry and 228.3cc wet and the adhesive layer thickness was determined to be 2.6 ⁇ m.
  • the barrier data for experiments 14 - 16 is summarized in Table 5 below.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

Structure laminée produite par revêtement d'au moins un côté d'un substrat au moyen d'un adhésif de lamination, mise en contact d'un côté revêtu dudit substrat avec un deuxième substrat, de manière à obtenir un feuil multicouche, et traitement dudit feuil multicouche par un déclencheur de radicaux libre, cet adhésif de lamination étant constitué par le produit réactionnel d'un acrylate multifonctionnel, d'un bis-silane et d'un acide éthyléniquement insaturé, éventuellement dissous dans un solvant.
PCT/US2001/005490 2000-03-03 2001-02-21 Adhesif lamine possedant des bis-silanes, des acrylates multifonctionnels et des acides ethyleniquement insatures WO2001066662A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001238580A AU2001238580A1 (en) 2000-03-03 2001-02-21 Laminate adhesive having bis-silanes, multifunctional acrylates and ethylenically unsaturated acids

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51764500A 2000-03-03 2000-03-03
US09/517,645 2000-03-03

Publications (2)

Publication Number Publication Date
WO2001066662A2 true WO2001066662A2 (fr) 2001-09-13
WO2001066662A3 WO2001066662A3 (fr) 2002-03-14

Family

ID=24060634

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/005490 WO2001066662A2 (fr) 2000-03-03 2001-02-21 Adhesif lamine possedant des bis-silanes, des acrylates multifonctionnels et des acides ethyleniquement insatures

Country Status (2)

Country Link
AU (1) AU2001238580A1 (fr)
WO (1) WO2001066662A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7722733B2 (en) 2004-03-29 2010-05-25 Baxter International Inc. Method for sterile connection of tubing
CN110183925A (zh) * 2019-05-23 2019-08-30 新乡市新贝尔信息材料有限公司 一种用于热转印色带背涂的固体料块及其制备方法
DE102018108588A1 (de) 2018-04-11 2019-10-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Barriereschichten sowie Zusammensetzungen für deren Herstellung
DE102018108587A1 (de) 2018-04-11 2019-10-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Barriereschichten sowie Zusammensetzungen für deren Herstellung
US10636920B2 (en) 2012-08-08 2020-04-28 3M Innovative Properties Company Barrier film, method of making the barrier film, and articles including the barrier film

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624464A1 (fr) * 1993-05-14 1994-11-17 Dow Corning Corporation Feuille barrière pour emballage
WO1998031541A1 (fr) * 1997-01-17 1998-07-23 Ucb Films Plc Adhesif a base de silicone, destine a un stratifie

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624464A1 (fr) * 1993-05-14 1994-11-17 Dow Corning Corporation Feuille barrière pour emballage
WO1998031541A1 (fr) * 1997-01-17 1998-07-23 Ucb Films Plc Adhesif a base de silicone, destine a un stratifie

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7722733B2 (en) 2004-03-29 2010-05-25 Baxter International Inc. Method for sterile connection of tubing
US10636920B2 (en) 2012-08-08 2020-04-28 3M Innovative Properties Company Barrier film, method of making the barrier film, and articles including the barrier film
DE102018108588A1 (de) 2018-04-11 2019-10-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Barriereschichten sowie Zusammensetzungen für deren Herstellung
WO2019197454A1 (fr) 2018-04-11 2019-10-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Couches barrières et compositions pour leur production
DE102018108587A1 (de) 2018-04-11 2019-10-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Barriereschichten sowie Zusammensetzungen für deren Herstellung
CN110183925A (zh) * 2019-05-23 2019-08-30 新乡市新贝尔信息材料有限公司 一种用于热转印色带背涂的固体料块及其制备方法

Also Published As

Publication number Publication date
WO2001066662A3 (fr) 2002-03-14
AU2001238580A1 (en) 2001-09-17

Similar Documents

Publication Publication Date Title
US6686008B1 (en) Silicone/multifunctional acrylate barrier coatings
US6514584B1 (en) Silicone containing laminate adhesive
JP3654534B2 (ja) アルキレンイミン／有機バリヤコーティング製造方法とその応用
US6436498B1 (en) Reactive silicone/alkyleneimine barrier laminating adhesives having bis-silane additives
EP0952922B1 (fr) Procede de lamination utilisant un adhesif a base de silicone, et un stratifie produit par ce procede
JP3851354B2 (ja) 反応性シリコーン／アルキレンイミンバリヤ積層接着剤とその応用分野
WO2001066656A2 (fr) Revetements isolants a base de bis-silanes, d'acrylates multifonctionnels et d'acides ethyleniquement insatures
EP1263894A2 (fr) Revetements d'isolement dans lesquels des polyacides sont utilises
US6541088B1 (en) Alkylenimine/organic barrier coatings having bis-silane additives
WO2001066662A2 (fr) Adhesif lamine possedant des bis-silanes, des acrylates multifonctionnels et des acides ethyleniquement insatures
US6423416B1 (en) Barrier coating compositions from bis-aminosilanes and phenolic compounds
TW397854B (en) Alkylenimine/organic barrier coatings method of manufacture and applications thereof
WO2001066655A1 (fr) Composition de revetement barriere produite a partir de silanes a fonction amino et de composes phenoliques
TW482818B (en) Method of manufacture of a laminate having gas barrier properties

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP