EP1414921A1 - Adhesifs a contrecoller reticulables aux uv - Google Patents

Adhesifs a contrecoller reticulables aux uv

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Publication number
EP1414921A1
EP1414921A1 EP02764712A EP02764712A EP1414921A1 EP 1414921 A1 EP1414921 A1 EP 1414921A1 EP 02764712 A EP02764712 A EP 02764712A EP 02764712 A EP02764712 A EP 02764712A EP 1414921 A1 EP1414921 A1 EP 1414921A1
Authority
EP
European Patent Office
Prior art keywords
polymer
composition according
adhesive
mol
vinyl
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Withdrawn
Application number
EP02764712A
Other languages
German (de)
English (en)
Inventor
Hans-Joachim Fricke
Martin Jung
Bernd Meyer-Roscher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
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Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of EP1414921A1 publication Critical patent/EP1414921A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • C09J131/00—Adhesives based on 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 acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Adhesives based on derivatives of such polymers
    • C09J131/02—Homopolymers or copolymers of esters of monocarboxylic acids
    • 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
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
    • C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/12—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives
    • C08J5/124—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives using adhesives based on a macromolecular component
    • 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
    • C09J133/00—Adhesives based on 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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • 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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/28—Non-macromolecular organic substances
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/416—Additional features of adhesives in the form of films or foils characterized by the presence of essential components use of irradiation

Definitions

  • the invention relates to a composition containing an aqueous polymer dispersion, characterized in that
  • the composition contains 0.0001 to 0.5 mol of a photoinitiator which, when irradiated with high-energy light, causes a crosslinking reaction and b) the polymer dispersed in the dispersion has 0.0001 to 1 mol of keto or aldehyde groups,
  • the invention further relates to the use of the composition as an adhesive, in particular for glossy film lamination, and to a process for glossy film lamination.
  • Crosslinkable adhesives are often used in gloss film lamination.
  • a transparent polymer film usually oriented polypropylene OPP or also polyacetate is generally coated with the liquid adhesive.
  • the adhesive is dried and then the coated film is laminated to the printing material, usually a printed cardboard or paper, under pressure and heat.
  • the laminate produced in this way is often grooved or embossed in further processing.
  • the adhesive layer In order to be groove and embossing resistant, the adhesive layer must withstand these deformations of the laminate, in the groove or in the embossing points, the glossy film must not detach from the printing material. To ensure this, the adhesive systems are usually chemically cross-linked.
  • the laminations produced must first be stored for a few hours before they can be grooved or embossed. This intermediate storage is increasingly perceived as disadvantageous because it means a delay in order processing.
  • Chemically crosslinking polymer dispersions for glossy film lamination are known, for example, from EP-A-148386 or EP-A-644902.
  • DE-A-19916663 discloses UV-crosslinkable polymer dispersions as an adhesive for glossy film lamination. With these adhesives too, the quality of the laminate obtained depends on the length of time that the films coated with adhesive are stored temporarily. The quality deteriorates with increasing storage time.
  • the object of the present invention was therefore adhesives for glossy film lamination, in which the quality of the laminates obtained is independent of the storage time of the coated films.
  • the laminates obtained should have high strength, high gloss and good adhesion even in the area of grooves or embossments in the cardboard.
  • compositions defined at the outset and their use have been found.
  • composition according to the invention contains an aqueous dispersion of a polymer which can be crosslinked by UV radiation.
  • the composition contains a photo initiator.
  • the photoinitiator causes the polymer to crosslink, preferably by means of a chemical graft reaction of the photoinitiator with a spatially adjacent polymer chain.
  • the crosslinking can be carried out by inserting a carbonyl group of the photoinitiator into an adjacent C-H bond to form a -C-C-O-H group.
  • the composition contains 0.0001 to 0.5 mol, particularly preferably 0.0002 to 0.1, very particularly preferably 0.0003 to 0.01 mol of the photoinitiator or the group of molecules effective as a photoinitiator, per 100 g of polymer ,
  • the photo initiator is e.g. Acetophenone, benzophenone, benzoin ether, benzyl dialkyl ketols or their derivatives.
  • the photoinitiator is preferably bound to the polymer dispersed in the aqueous dispersion (hereinafter referred to as polymer).
  • the photoinitiator preferably contains an acrylic or (meth) acrylic group.
  • Suitable copolymerizable photoinitiators are acetophenene or benzophenone derivatives which contain at least one, preferably an ethylenically unsaturated group.
  • the ethylenically unsaturated group is preferably an acrylic or methacrylic group.
  • the ethylenically unsaturated group can be bonded directly to the phenyl ring of the acetophenone or benzophenone derivative. Generally there is a spacer group between the phenyl ring and the ethylenically unsaturated group.
  • the spacer group can e.g. contain up to 100 carbon atoms.
  • Suitable acetophenone or benzophenone derivatives are e.g. in EP-A-346 734 / EP-A-377199 (1st claim), DE-A-4 037 079 (1st claim) and DE-A-3 844 444 (1st claim) and are described by this reference also disclosed in the present application.
  • Preferred acetophenone and benzophenone derivatives are those of the formula
  • R 1 is an organic radical with up to 30 C atoms
  • R 2 is an H atom or a methyl group
  • R 3 is an optionally substituted phenyl group or a C 1 -C 4 alkyl group.
  • R 1 particularly preferably represents an alkylene group, in particular a C 2 -C 8 alkylene group.
  • R 3 particularly preferably represents a methyl group or a phenyl group.
  • the polymer further contains 0.0001 to 1 mol, preferably 0.0002 to 0.10 mol, particularly preferably 0.0006 to 0.03 mol of keto or aldehyde groups.
  • the keto or aldehyde groups are preferably bound to the polymer by copolymerization of copolymerizable, ethylenically unsaturated compounds having keto or aldehyde groups.
  • Suitable compounds of this type are acrolein, methacrolein, vinyl alkyl ketones having 1 to 20, preferably 1 to 10 carbon atoms in the alkyl radical, formylstyrene, (meth) acrylic acid alkyl esters with one or two keto or aldehyde or one Aldehyde and a keto group in the alkyl radical, the alkyl radical preferably comprising a total of 3 to 10 carbon atoms, for example (meth) acryloxyalkylpropanale, as described in DE-A-2722097.
  • N-Oxoalkyl (meth) acrylamides such as are known, for example, from US Pat. No. 4,226,007, DE-A-2061213 or DE-A-2207209 are also
  • Acetoacetyl (meth) acrylate, acetoacetoxyethyl (meth) acrylate and in particular diacetone acrylamide are particularly preferred.
  • the polymer is preferably constructed from compounds (monomers) that can be polymerized by free radicals.
  • the polymer preferably consists of at least 40% by weight, particularly preferably at least 60% by weight, very particularly preferably at least 80% by weight, of so-called main monomers.
  • the main monomers are selected from:
  • C-C Q-alkyl (meth) acrylates vinyl esters of up to 20 carbon atoms containing carboxylic acids, vinyl aromatics with up to 20 carbon atoms, ethylenically unsaturated nitriles, vinyl halides, vinyl ethers of alcohols containing 1 to 10 carbon atoms, aliphatic hydrocarbons with 2 to 8 carbon atoms and 1 or 2 double bonds or mixtures of these monomers.
  • Ci - Cio alkyl such as methyl methacrylate, methyl acrylate, n-butyl acrylate, ethyl acrylate and 2-ethylhexyl acrylate.
  • Vinyl esters of carboxylic acids with 1 to 20 carbon atoms are e.g. B. Vinyl laurate, stearate, vinyl propionate, vinyl versatic acid and vinyl acetate.
  • Suitable vinyl aromatic compounds are vinyl toluene a- and p -methylstyrene, a-butylstyrene, 4-n-butylstyrene, 4 -n-decylstyrene and preferably styrene.
  • nitriles are acrylonitrile and methacrylonitrile.
  • the vinyl halides are chlorine, fluorine or bromine-substituted ethylenically unsaturated compounds, preferably vinyl chloride and vinylidene chloride.
  • vinyl ethers include B. vinyl methyl ether or vinyl isobutyl ether. Vinyl ethers of alcohols containing 1 to 4 carbon atoms are preferred.
  • butadiene, isoprene and chloroprene may be mentioned as hydrocarbons with 2 to 8 carbon atoms and two olefinic double bonds.
  • the main monomers preferred are the C 1 -C 1 -alkyl acrylates and methacrylates, in particular C 1 -C 15 -alkyl acrylates and methacrylates, the acrylates being particularly preferred in each case.
  • Methyl acrylate, ethyl acrylate, n-butyl acrylate, n-hexyl acrylate, octyl acrylate and 2-ethylhexyl acrylate and mixtures of these monomers are very particularly preferred.
  • the polymer further preferably contains the above-mentioned monomers with a photoinitiator group and the above-mentioned monomers with a keto or aldehyde group in such amounts that the desired content of these groups is present in the polymer.
  • the polymer may contain further monomers, e.g. B. monomers with carboxylic acid, sulfonic acid or phosphonic acid groups.
  • Carboxylic acid groups are preferred. May be mentioned for. As acrylic acid, methacrylic acid, 25 itaconic acid, maleic acid or fumaric acid.
  • hydroxyl group-containing monomers in particular -CC-hydroxyalkyl (meth) acrylates, (meth) acrylamide.
  • Phenyloxyethyl glycol - mono (meth) acrylate, glydidyl acrylate, glycidyl methacrylate, amino (meth) acrylates such as 2-aminoethyl (meth) acrylate may also be mentioned as further monomers.
  • the glass transition temperature of the polymer is preferably below 40 60 ° C, in particular it is -50 to + 60 ° C, particularly preferably -30 to + 40 ° C and very particularly preferably -30 to + 20 ° C.
  • the glass transition temperature of the polymer can be determined by conventional methods such as differential thermal analysis or differential 45 scanning calorimetry (see, for example, ASTM 3418/82, so-called "midpoint temperature”).
  • the polymer is preferably produced by emulsion polymerization, and is therefore an emulsion polymer.
  • the manufacture can e.g. B. also by solution polymerization and subsequent dispersion in water.
  • ionic and / or non-ionic emulsifiers and / or protective colloids or stabilizers are used as surface-active compounds.
  • Suitable protective colloids can be found in Houben-Weyl, Methods of Organic Chemistry, Volume XIV / 1, Macromolecular Substances, Georg-Thieme-Verlag, Stuttgart, 1961, pp. 411 to 420.
  • Both anionic, cationic and nonionic emulsifiers Preferably, only accompanying emulsifiers are used as accompanying surface-active substances, the molecular weight of which, in contrast to the protective colloids, is usually below 2000 g / mol.
  • the individual components must be compatible with one another, which can be checked with a few preliminary tests if in doubt.
  • Anionic and nonionic emulsifiers are preferably used as surface-active substances.
  • Common accompanying emulsifiers are e.g. B. ethoxylated fatty alcohols (EO grade: 3 to 50, alkyl radical: Cs to C 36 ) / ethoxylated mono-, di- and tri-alkylphenols (EO degree: 3 to 50, alkyl radical: C_ - to Cg), alkali metal salts of dialkyl esters of sulfosuccinic acid as well as alkali and ammonium salts of alkyl sulfates (alkyl radical: Ce to C ⁇ ), of ethoxylated alkanols (EO degree: 4 to 30, alkyl radical: C ⁇ 2 - to O s), of ethoxylated alkylphenols (EO- Grade: 3 to 50, alkyl radical: C 4 - to Cg), of alkyl sulfonic acids (alkyl radical: C
  • Suitable emulsifiers are compounds of the general formula II (
  • R 5 and R 6 are hydrogen or C 1 -C 4 -alkyl and are not simultaneously hydrogen, and C and Y can be alkali metal ions and / or ammonium ions.
  • R 5 , R 6 are linear or branched alkyl radicals having 6 to 18 carbon atoms or hydrogen and in particular having 6, 12 and 16 carbon atoms, where R 5 and R 5 are not both hydrogen at the same time.
  • X and Y are preferably sodium, potassium or ammonium ions, with sodium being particularly preferred.
  • Compounds II in which X and Y are sodium, R 5 is a branched alkyl radical having 12 C atoms and R 6 is hydrogen or R 5 are particularly advantageous.
  • Technical mixtures are frequently used which have a proportion of 50 to 90% by weight of the monoalkylated product, for example Dowfax® 2A1 (trademark of the Dow Chemical Company).
  • Suitable emulsifiers can also be found in Houben-Weyl, Methods of Organic Chemistry, Volume 14/1, Macromolecular Substances, Georg Thieme Verlag, Stuttgart, 1961, pages 192 to 208.
  • emulsifiers are e.g. B. Dowfax®2 AI, Emulan® NP 50, Dextrol® OC 50, Emulsifier 825, Emulsifier 825 S, Emulan® OG, Texapon® NSO, Nekanil® 904 S, Lumiten® I -RA, Lumiten E 3065, Disponil FES 77 , Lutensol AT 18, Steinapol VSL, Emulphor NPS 25.
  • the surface-active substance is usually used in amounts of 0.1 to 10% by weight, based on the monomers to be polymerized.
  • Water-soluble initiators for emulsion polymerization are e.g. B. Ammonium and alkali metal salts of peroxidic sulfuric acid, e.g. B. Sodium peroxodisulfate, hydrogen peroxide or organic peroxides, e.g. B. tert-butyl hydroperoxide.
  • red-ox reduction-oxidation
  • the Red Ox initiator systems consist of at least one mostly inorganic reducing agent and one inorganic or organic oxidizing agent.
  • the oxidation component is e.g. B. to the initiators for emulsion polymerization already mentioned above.
  • the reduction components are e.g. B. to alkali metal salts of sulfurous acid, such as. B. Sodium sulfite, sodium bisulfite, alkali metal salts of disulfuric acid such as sodium disulfite, bisulfite addition compounds of aliphatic aldehydes and ketones, such as acetone bisulfite or reducing agents such as hydroxymethanesulfinic acid and its salts, or ascorbic acid.
  • the Red-Ox initiator systems can be more soluble when used Metal compounds whose metallic component can occur in several valence levels can be used.
  • Common Red Ox initiator systems are e.g. B. ascorbic acid / iron 5 (II) sulfate / sodium peroxydisulfate, tert-butyl hydroperoxide / sodium disulfite, tert-butyl hydroperoxide / Na-hydroxymethanesulfinic acid.
  • the individual components, e.g. B. the reduction component can also be mixtures e.g. a mixture of the sodium salt of hydroxymethanesulfinic acid and sodium disulfite.
  • the compounds mentioned are mostly used in the form of aqueous solutions, the lower concentration being determined by the amount of water acceptable in the dispersion and the upper concentration being determined by the solubility of the compound in question in water
  • the concentration is generally 0.1 to 30% by weight, preferably 0.5 to 20% by weight, particularly preferably 1.0 to 10% by weight, based on the solution.
  • the amount of initiators is generally 0.1 to 20 10% by weight, preferably 0.5 to 5% by weight, based on the monomers to be polymerized. There can also be several different ones. Initiators are used in emulsion polymerization.
  • Regulators can be used in the polymerization, e.g. B. in 25 amounts of 0 to 0.8 parts by weight, based on 100 parts by weight of the monomers to be polymerized, by which the molecular weight is reduced.
  • B. Compounds with a thiol group such as tert. -Butylmerca tan, thioglycolic acid ethyl acrylate, mercaptoethynol, mercaptopropyltrimethoxysilane or tert. -Dodecylmercap- 30 tan.
  • the proportion of these regulators can, when used as an adhesive for laminated film lamination, in particular 0.05 to 0.8 part by weight, preferably 0.1 to 0.5 part by weight, based on 100 parts by weight of the monomers to be polymerized be.
  • the use of a regulator is less preferred.
  • the regulators do not contain a polymerizable, ethylenically unsaturated group. The regulators cause the polymerization chain to be terminated and are therefore bound to the polymer chains.
  • the emulsion polymerization is usually carried out at 30 to 130, preferably 50 to 90 ° C.
  • the polymerization medium can consist only of water, as well as mixtures of water and thus miscible liquids such as methanol. Preferably only water is used.
  • the emulsion polymerization can be carried out either as a batch process or in the form of a feed process, including a step or gradient procedure.
  • the inlet route is preferred, in which part of the po- submitted to the polymerization batch, heated to the polymerization temperature, polymerized, and then the rest of the polymerization batch, usually via a plurality of spatially separate feeds, one or more of which contain the monomers in pure or in emulsified form, continuously, stepwise or with a concentration gradient being superimposed while maintaining supplies the polymerization to the polymerization zone.
  • a polymer seed In the polymerization z. B. to better adjust the particle size, a polymer seed.
  • the manner in which the initiator is added to the polymerization vessel in the course of the free radical aqueous emulsion polymerization is known to the person skilled in the art. It can either be completely introduced into the polymerization vessel or used continuously or in stages in the course of the free radical aqueous emulsion polymerization, depending on its consumer. In particular, this depends on the chemical nature of the initiator system as well as on the polymerization temperature. A portion is preferably introduced and the remainder is fed to the polymerization zone in accordance with the consumption.
  • Residual monomers are usually also after the end of the actual emulsion polymerization, ie. H. after a conversion of the monomers of at least 95%, initiator added.
  • the individual components can be added to the reactor in the feed process from above, in the side or from below through the reactor floor.
  • aqueous dispersions of the polymer are generally obtained with solids contents of from 15 to 75% by weight, preferably from 40 to 75% by weight.
  • dispersions with the highest possible solids content are preferred.
  • a new generation of particles can be generated, for example, by adding seeds (EP 81083), by adding excess amounts of emulsifier or by adding mini-emulsions.
  • Another advantage associated with the low viscosity at high solids content is the improved coating behavior at high solids contents. The generation of a new / new generation of particles can occur at any time respectively. It depends on the particle size distribution desired for a low viscosity.
  • the polymer is used in the form of its aqueous dispersion.
  • the composition further preferably contains a compound with at least 2 functional groups, in particular 2 to 5 functional groups, particularly preferably 2 or 3 functional groups, very particularly preferably 2 functional groups, which enter into a crosslinking reaction with the keto or aldehyde groups.
  • Hydrazide for example, Hydrazide, hydroxylamine or oxime ether or amino groups as functional groups.
  • Suitable compounds with hydrazide groups are e.g. Polycarbonic acid hydrazides with a molecular weight of up to 500 g / mol.
  • Particularly preferred hydrazide compounds are dicarboxylic acid dihydrazides with preferably 2 to 10 carbon atoms.
  • adipic acid dihydrazide, sebacic acid dihydrazide and isophthalic acid dihydrazide are particularly interested.
  • Suitable compounds with hydroxylamine or oxime ether groups are e.g. mentioned in WO 93/25588.
  • the compounds are preferably hydroxylamine derivatives of the general formula (H 2 N - O - 2A lr
  • A represents a saturated or unsaturated aliphatic, linear or branched hydrocarbon radical of 2 to 12 carbon atoms, which can be interrupted by 1 to 3 non-adjacent oxygen atoms, and n represents 2, 3 or 4,
  • R 1 and R 2 are each independently a C ⁇ -C ⁇ 0 alkyl, a C ⁇ -C ⁇ 0 alkoxy, a C 5 0 -C ⁇ -cycloalkyl or a C 5 -C ⁇ 0 aryl radical, which also contain 1 to 3 non-adjacent nitrogen, oxygen or sulfur atoms in the carbon chain or in the carbon ring and can be substituted by 1 to 3 C 1 -C 4 -alkyl or alkoxy groups, R 1 or R 2 can represent a hydrogen atom,
  • Form carbon atoms, and some of the carbon atoms can also be part of an aromatic ring system.
  • variable A in formulas I and II is preferably a hydrocarbon chain of 2 to 8 carbon atoms and n is preferably 2.
  • the radicals R 1 and R 2 each preferably represent a hydrogen atom, a C 1 -C 6 -alkyl group or a C 1 -C 6 -alkoxy group. In the case of the hydrogen atom, only one of the radicals R 1 or R 2 can represent a hydrogen atom.
  • Suitable compounds with amino groups are, for example, ethylenediamine, propylenediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, diethylenetriamine, triethylenetetraamine, polyethyleneimines, partially hydrolyzed polyvinylformamides, ethylene oxide and propylene oxide adducts such as the Texaco "Jeffamine" and cycloaminodiamine diamine, cyclohexane diamine, cyclohexyl diamine.
  • the compound with the functional groups can be added to the composition or the dispersion of the polymer at any time. No crosslinking with the keto or aldehyde groups occurs in the aqueous dispersion. Crosslinking on the coated substrate only occurs during drying.
  • the amount of the compound with the functional groups is preferably such that the molar ratio of the functional groups to the keto and / or aldehyde groups of the polymer is 1:10 to 10: 1, in particular 1: 5 to 5: 1, particularly preferably 1: 2 to 2: 1 and very particularly preferably 1: 1.3 to 1.3: 1.
  • equimolar amounts of the functional groups and the keto and / or aldehyde groups are preferred.
  • composition is preferably used as an adhesive, in particular as an adhesive for bonding large-area substrates, i. H. used for the production of laminates (laminating adhesive).
  • the composition can consist exclusively of the aqueous dispersion of the polymer, preferably additionally the compound dissolved or dispersed in the dispersion with functional groups and optionally photoinitiator (if not bound to the polymer). You can add other additives such.
  • polymer films in particular made of polyethylene, oriented polypropylene, polyamide, polyethylene terephthalate, cellulose acetate, cellophane, with metal (e.g. aluminum coated (vapor-coated) polymer film (in short: metallized films) or paper, cardboard or
  • Metal foils in particular made of aluminum.
  • the films mentioned can also, for. B. be printed with printing inks.
  • the laminating adhesive is applied to at least one large-area substrate, preferably with a layer thickness of 0.1 to 20, particularly preferably 2 to 15 g / m 2 z. B. applied by knife, brush, etc.
  • At least one of the two substrates to be bonded should be transparent to high-energy light, in particular UV light.
  • the coated substrate can then be laminated with a second substrate.
  • the substrate coated with adhesive is preferably a transparent polymer film.
  • the polymer or dispersion is preferably used as an adhesive for glossy film lamination.
  • paper or cardboard is glued with transparent polymer films.
  • the papers or boxes can be printed.
  • the laminating adhesive layer can be irradiated through the transparent film with high-energy light, which triggers the crosslinking reactions of the photoinitiator group.
  • UV light is preferably UV light.
  • Commercially available medium-pressure mercury lamps or lasers that emit in the UV range can be used for UV radiation.
  • the radiation energy can be, for example, 200 mJ / cm 2 to 2000 mJ / cm 2, preferably 500 mJ / cm 2 to 1000 mJ / cm 2 of the irradiated area.
  • the initial charge (180 g of water and 3.5 g of styrene seed, 33% strength) was heated to an internal temperature of 90 ° C. and 10% feed 2 was introduced. After 10 minutes, feed 1, which contains the monomers, and feed 2 were started.
  • Feed 2 consisted of 67 g of sodium peroxodisulfate (2.5%). In all cases, the composition of feed 1 is 78% butyl acrylate, 20% methyl methacrylate and 2% acrylic acid. In the case of chemical cross-linking diacetonacylamide (DAAM) adipic acid dihydrazide (ADDH), DAAM is also included in the feed (see table). In the case of photo crosslinking, a polymerizable photoinitiator can optionally be included in the feed.
  • DAAM diacetonacylamide
  • ADH adipic acid dihydrazide
  • a polymerizable photoinitiator can optionally be included in the feed.
  • Feeds 1 and 2 were metered in over the course of 2 h and post-polymerization was carried out for 0.5 h.
  • the amount of initiator sodium peroxodisulfate
  • the solids content was 55%.
  • the photoinitiator was stirred into the dispersion at 60 ° C.
  • DAAM-containing dispersions were added with an aqueous solution of ADDH.
  • the mass ratio of ADDH to DAAM is 2: 1 in all cases.
  • the pretreated side of the polypropylene film (PP) was coated with adhesive. After drying with cold air, the cardboard was placed on top and rolled on with a laboratory lamination roll. The cut laminations were pressed in the roller press.
  • UV light 1000 mJ / cm 2 > was irradiated directly, the laminated samples were grooved or embossed after the time specified in the table (immediately, 30 minutes, 1 hour or 24 hours, see table) grooving, fold in spine; embossing) and assessed after 6 weeks:
  • the value before the slash indicates the result of use
  • the value after the slash indicates the result of embossing.
  • crosslinking systems are advantageous compared to the use of a single crosslinking system, e.g.
  • Variation 11 (with a total of only 0.35 pphm crosslinker) achieves the properties of variant 3
  • Variation 12 (with a total of 0.55 pphm crosslinker) exceeds the properties of 3 (0.5 pphm crosslinker) and 7 (0.6ppm crosslinker).
  • Variation 14 (with a total of 1.1 pphm crosslinker) exceeds the properties of 4

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

L'invention concerne une composition contenant une dispersion polymère aqueuse. L'invention est caractérisée en ce que a) cette composition comporte 0,0001 à 0,5 mol d'un photo-initiateur qui provoque une réaction de réticulation lorsqu'il est irradié d'une lumière riche en énergie, et b) le polymère de la dispersion a 0,0001 à 1 mol de groupes céto ou aldéhyde, chaque indication en mol se rapportant à 100g de polymère en dispersion.
EP02764712A 2001-07-25 2002-07-17 Adhesifs a contrecoller reticulables aux uv Withdrawn EP1414921A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10135379 2001-07-25
DE10135379A DE10135379A1 (de) 2001-07-25 2001-07-25 UV-vernetzbare Kaschierklebstoffe
PCT/EP2002/007933 WO2003011993A1 (fr) 2001-07-25 2002-07-17 Adhesifs a contrecoller reticulables aux uv

Publications (1)

Publication Number Publication Date
EP1414921A1 true EP1414921A1 (fr) 2004-05-06

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EP02764712A Withdrawn EP1414921A1 (fr) 2001-07-25 2002-07-17 Adhesifs a contrecoller reticulables aux uv

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US (1) US7220337B2 (fr)
EP (1) EP1414921A1 (fr)
DE (1) DE10135379A1 (fr)
WO (1) WO2003011993A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10135379A1 (de) 2001-07-25 2003-02-06 Basf Ag UV-vernetzbare Kaschierklebstoffe
DE10261196A1 (de) * 2002-12-20 2004-07-01 Basf Ag Kaschierklebstoff
DE102004061611A1 (de) * 2004-12-17 2006-07-06 Basf Ag Vernetzbarer Haftklebstoff für wiederablösbare Weich-PVC-Träger
DE102005022166A1 (de) * 2005-05-13 2006-11-16 Celanese Emulsions Gmbh Laminate, Verfahren zu deren Herstellung und Verwendung
US20070029034A1 (en) * 2005-08-02 2007-02-08 Mgaya Alexander P Dual cure adhesives
EP1749869A1 (fr) * 2005-08-02 2007-02-07 Henkel Corporation Adhésifs à double durcissement
CN101250242B (zh) * 2008-03-08 2010-06-02 西北师范大学 两亲聚合物树脂及其制备和在生产智能呼吸涂料中的应用
FR2947821B1 (fr) * 2009-07-09 2011-09-09 Commissariat Energie Atomique Procede d'amelioration de l'adhesion d'un materiau reticulable par uv sur un substrat
JP2019509357A (ja) * 2016-01-18 2019-04-04 ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ 複合フィルムを貼り合わせるための一成分系ラミネート接着剤の使用
EP3202795B1 (fr) 2016-02-08 2018-08-08 Basf Se Utilisation d'une dispersion d'adhésif pour le laminage brillant de films
DE102018205839A1 (de) 2018-04-17 2019-10-17 Rampf Holding Gmbh & Co. Kg Zusammensetzungen zur Formstabilisierung von hydraulischen Bindemitteln und daraus hergestellte Formkörper
CN112004878A (zh) * 2018-04-20 2020-11-27 巴斯夫欧洲公司 具有基于通过酮基或醛基的交联的凝胶含量的粘合剂组合物
CN112322195B (zh) * 2020-11-03 2023-05-16 西安思摩威新材料有限公司 一种紫外光固化组合物胶水及其使用方法和应用

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DE3343779A1 (de) 1983-12-03 1985-06-13 Basf Ag, 6700 Ludwigshafen Verfahren zur verbesserung der haftung von klebstoffschichten, die aus waessriger dispersion auf polyolefinoberflaechen aufgebracht werden
EP0350157B2 (fr) * 1988-05-30 1997-12-17 Dainippon Ink And Chemicals, Inc. Composition de revêtement aqueuse
DE4219384A1 (de) 1992-06-13 1993-12-23 Basf Ag Bei Raumtemperatur mit Hydroxylaminen oder Oximethern vernetzbare Dispersion oder Lösung
US5763012A (en) * 1996-10-16 1998-06-09 Basf Aktiengesellschaft Coating of substrates
ES2234584T3 (es) * 1999-04-14 2005-07-01 Basf Aktiengesellschaft Dispersiones recticulables en uv para el forrado de laminas.
DE10135379A1 (de) 2001-07-25 2003-02-06 Basf Ag UV-vernetzbare Kaschierklebstoffe

Non-Patent Citations (1)

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Title
See references of WO03011993A1 *

Also Published As

Publication number Publication date
DE10135379A1 (de) 2003-02-06
WO2003011993A1 (fr) 2003-02-13
US20040168762A1 (en) 2004-09-02
US7220337B2 (en) 2007-05-22

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