EP2313463A2 - Composition époxy/(méth)acrylate - Google Patents

Composition époxy/(méth)acrylate

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Publication number
EP2313463A2
EP2313463A2 EP09780749A EP09780749A EP2313463A2 EP 2313463 A2 EP2313463 A2 EP 2313463A2 EP 09780749 A EP09780749 A EP 09780749A EP 09780749 A EP09780749 A EP 09780749A EP 2313463 A2 EP2313463 A2 EP 2313463A2
Authority
EP
European Patent Office
Prior art keywords
composition
meth
radical
composition according
formula
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.)
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Application number
EP09780749A
Other languages
German (de)
English (en)
Inventor
Markus Haufe
Andreas Kramer
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.)
Sika Technology AG
Original Assignee
Sika Technology AG
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Filing date
Publication date
Priority claimed from CH11192008A external-priority patent/CH699184A2/de
Priority claimed from EP08169630A external-priority patent/EP2189500A1/fr
Application filed by Sika Technology AG filed Critical Sika Technology AG
Priority to EP09780749A priority Critical patent/EP2313463A2/fr
Publication of EP2313463A2 publication Critical patent/EP2313463A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/10—Homopolymers or copolymers of methacrylic acid esters
    • 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
    • C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals

Definitions

  • the invention relates to the field of polymerizable compositions based on epoxy resins and free-radically polymerizable monomers.
  • (meth) acrylate compositions are distinguished, above all, by a high initial strength and generally rapid curing, epoxy resins, above all by a high final strength.
  • thermosetting compositions for example in applications in which the composition is applied over a large area and where the substrate provided with the composition due to its dimensions not readily uniform and over the entire surface at the same time, for example in an oven, can be heated so that the composition could harden. For example, this is the case with large-surface coatings, in particular also with floor coverings. Non-uniform heating and the associated non-uniform curing of thermosetting compositions in such a case can lead to stresses within the cured composition.
  • compositions according to the invention are particularly suitable.
  • the heretofore known curing agents for epoxy resins, in particular aliphatic amines, which enable curing of the epoxy resin even at room temperature, are not suitable for use in a hybrid system with (meth) acrylates and epoxides since they inhibit the free-radical polymerization reaction of the (meth) acrylate monomers and thus no optimal initial strength is achieved.
  • the object of the present invention is therefore to provide a composition which has a high initial strength shortly after its application and, after further curing at room temperature, attains a high final strength.
  • compositions according to claim 1 solve this problem.
  • the free-radical polymerization reaction can be used immediately after the application of the composition and can proceed without inhibition, so that a high initial strength is achieved.
  • this specific compound allows the epoxy resin to cure completely without additional energy being supplied to the system in any way, ie in particular that no additional heat has to be added to the composition for curing and / or postcuring.
  • the present invention relates in a first aspect to a composition
  • a composition comprising a) at least one free-radically polymerizable monomer M; b) at least one radical generator; c) at least one epoxy resin A, which has on average more than one epoxide group per molecule; and d) at least one compound of the formula (I).
  • the radical R 1 is a hydrocarbon radical having 1 to 6 C atoms, in particular an ethyl or a methyl group.
  • the radicals R 3, R 4, R 5, R 6, R 7 and R 8 are each independently a hydrogen atom or a hydrocarbon radical having 1 to 6 carbon atoms, particularly an ethyl or a methyl group.
  • the radicals R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are preferably a hydrogen atom.
  • radicals R 2 and R 9 independently of one another each represent a hydrogen atom or a hydrocarbon radical having 1 to 6 C atoms, in particular an ethyl or a methyl group, or a radical of the formula (II)
  • radical R 10 is a hydrogen atom or a methyl group.
  • radicals R 2 and / or R 9 is a radical of the formula (II).
  • polymer in the present document comprises, on the one hand, a collective of chemically uniform, but different in terms of degree of polymerization, molecular weight and chain length macromolecules, which was prepared by a polyreaction (polymerization, polyaddition, polycondensation) Derivatives of such a collective of macromolecules from polyreactions, ie compounds which have been obtained by reactions, such as additions or substitutions, of functional groups on predetermined macromolecules and which may be chemically uniform or chemically non-uniform Prepolymers, that is to say reactive oligomeric pre-adducts whose functional groups are involved in the synthesis of macromolecules
  • polymeric polyol in the present document comprises any polymer according to the preceding definition which has more than one hydroxyl group e has. Accordingly, the term “polymeric diol” includes any polymer having exactly two hydroxyl groups.
  • polyurethane polymer encompasses all polymers which are prepared by the so-called diisocyanate-polyaddition process, including those polymers which are almost or completely free of urethane groups.
  • polyurethane polymers are polyether polyurethanes, polyester polyurethanes, Polyether polyureas, polyureas, polyester-polyureas, polyisocyanurates and polycarbodiimides
  • solid epoxy resin is well known to the person skilled in the epoxy art and is used in contrast to "liquid epoxy resin.”
  • the glass transition temperature T 9 of the solid epoxy resins is above room temperature of 23 ° C., ie it can be reduced to free-flowing particles at room temperature.
  • the term "bifunctional" refers to
  • Monomers or in general to molecules which have two different types of chemically reactive functional groups For example, a bifunctional monomer to both a radical polymerizable group and a group reactive with epoxy resins.
  • difunctional refers to molecules having two identical chemically reactive functional groups or two functional groups of the same type, for example, one difunctional molecule has two hydroxyl groups.
  • diphenol in the present document refers to mononuclear, polynuclear and fused aromatics and heteroaromatics which have two phenolic hydroxyl groups.
  • Molecular weight as used herein means always the number average molecular weight M n .
  • Suitable free-radically polymerizable monomers M are, in particular, vinyl esters, (meth) acrylic esters, acrylamides or styrene.
  • suitable radically polymerizable monomers are, in particular, vinyl esters, (meth) acrylic esters, acrylamides or styrene.
  • M is selected from the group consisting of vinyl acetate, methyl (meth) acrylate, ethyl (meth) acrylate, n- and i-butyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isodecyl ( meth) acrylate, cyclohexyl (meth) acrylate, 3-tetrahydrofuryl (meth) acrylate, isobornyl (meth) acrylate, norbornyl (meth) acrylate, trimethylcyclohexyl (meth) acrylate, benzyl (meth) acrylate, 2- Hydroxyethyl (meth) acrylate, 2- and 3-hydroxypropyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, 2- (2-ethoxyethoxy) ethyl (meth) acrylate,
  • the radically polymerizable monomer M is a
  • Methacrylate in particular selected from the group consisting of methyl methacrylate (MMA), tetrahydrofurfuryl methacrylate (THFMA), cyclohexyl methacrylate (CHMA), isobornyl methacrylate (IBMA) and trimethylcyclohexyl methacrylate (TMCHMA).
  • suitable free-radically polymerizable monomers M are crosslinking monomers such as, for example, allyl (meth) acrylate or crosslinking difunctional (meth) acrylates, for example oligomeric or polymeric compounds of the formula (III).
  • n represents a value of 2 to 5.
  • Z is a polyol after removal of n hydroxyl groups and Y is O or NR ', where R' is a hydrocarbon radical or a hydrogen atom, preferably a hydrogen atom.
  • R' is a hydrocarbon radical or a hydrogen atom, preferably a hydrogen atom.
  • the compound of the formula (III) is in particular selected from
  • n in the compound of formula (III) is a value of 2 and Z is a polymeric polyol after removal of two OH groups.
  • this polymeric polyol is a polyalkylene polyol, a polyoxyalkylene polyol or a polyurethane polyol; a polyhydroxy functional ethylene-propylene-diene, ethylene-butylene-diene or ethylene-propylene-diene copolymer; a polyhydroxy-functional copolymer of dienes such as 1,3-butadiene or diene mixtures and vinyl monomers such as styrene, acrylonitrile or isobutylene; a polyhydroxy-functional polybutadiene polyol; a polyhydroxy-functional acrylonitrile / butadiene copolymer; or a polysiloxane polyol.
  • such difunctional (meth) acrylates are selected from the group consisting of polyethylene glycol di (meth) acrylate such as Diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate; Polypropylene glycol di (meth) acrylate such as dipropylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate; and tris (2-hydroxyethyl) isocyanurate tri (meth) acrylate.
  • Z a diphenol, in particular an alkoxylated
  • Diphenol after removal of two OH groups, preferably ethoxylated bisphenol A.
  • a difunctional (meth) acrylate under the trade name Sartomer ® SR 348 commercially available from Sartomer Company, Inc., USA.
  • difunctional (meth) acrylates such as epoxy (meth) acrylates, in particular epoxy (meth) acrylates, which are obtainable from the reaction of bisphenol A diglycidyl ether with (meth) acrylic acid.
  • a difunctional (meth) acrylate under the trade name Sartomer CN ® 104 commercially available from Sartomer Company, Inc., USA.
  • Suitable polyhydroxy-terminated acrylonitrile / butadiene copolymers are typically selected from carboxyl-terminated acrylonitrile / butadiene copolymers.
  • Copolymers which, for example, under the name Hypro ® (formerly Hycar ®) CTBN from Emerald Performance Materials, LLC, are commercially available US and epoxides or amino alcohols.
  • Such suitable radically polymerizable monomers M of Formula (III) are for example commercially available from Kraton Polymers, USA, or performance under the trade names Hypro ® VTB and Hypro ® VTBNX from the company Emerald Performance Materials, LLC, USA.
  • the radically polymerizable monomer M of the formula (III) is, in particular, a polyurethane (meth) acrylate.
  • a polyurethane (meth) acrylate Such compounds are typically, in a manner known to those skilled in the art, prepared from the reaction of at least one polyisocyanate, in particular a diisocyanate, and a (meth) acrylic acid, a (meth) acrylamide or a (meth) acrylic acid ester, which Has hydroxyl group.
  • the diisocyanate prior to reaction with (meth) - acrylic acid, a (meth) acrylamide or a (meth) acrylic acid ester which has a hydroxyl group, with at least one polyol P, in particular a diol, are reacted in a method known in the art to a polyurethane polymer having isocyanate groups.
  • Hydroxyalkyl (meth) acrylate such as hydroxypropyl acrylate (HPA), hydroxypropyl methacrylate (HPMA), hydroxybutyl acrylate (HBA) or hydroxybutyl methacrylate (HBMA), preferably hydroxyethyl acrylate (HEA) or hydroxyethyl methacrylate (HEMA), are particularly suitable for the reaction with the isocyanate groups of the polyisocyanate.
  • HPA hydroxypropyl acrylate
  • HPMA hydroxypropyl methacrylate
  • HBA hydroxybutyl acrylate
  • HBMA hydroxybutyl methacrylate
  • HEMA hydroxyethyl acrylate
  • HEMA hydroxyethyl methacrylate
  • a monohydroxypoly (meth) acrylate of a polyol preferably of glycerol or trimethylolpropane.
  • Polyurethane (meth) acrylates can also be prepared by esterification of a hydroxyl-containing polyurethane polymer with (meth) acrylic acid.
  • polyurethane (meth) acrylates can be prepared by the reaction of a (meth) acrylic acid ester having at least one isocyanate group, with a hydroxyl-containing polyurethane polymer or with a polyol, as described for example in the present document.
  • a (meth) acrylic acid ester having at least one isocyanate group for example, 2-isocyanatoethyl methacrylate is suitable.
  • diisocyanates are suitable as diisocyanates.
  • mention may be made of 1,6-hexamethylene diisocyanate (HDI), 2-methylpentamethylene-1,5-diisocyanate, 2,2,4- and 2,4,4-trimethyl-1,6-hexamethylene diisocyanate (TMDI), 1,1-dodecamethylene diisocyanate, lysine and lysine ester diisocyanate, cyclohexane-1,3-diisocyanate, cyclohexane-1,4-diisocyanate, 1-isocyanato-SS ⁇ -trimethyl- ⁇ -isocyanatomethylcyclohexane ( isophorone diisocyanate or IPDI) , Perhydro-2,4'-diphenylmethane diisocyanate and perhydro-4,4'-diphenylmethane diisocyanate, 1,4-diisocyanato-2,2,
  • Preferred polyols P are polyoxyalkylene polyols, also called “polyether polyols", polyester polyols, polycarbonate polyols and mixtures thereof
  • the most preferred polyols are diols, in particular polyoxyethylene diols, polyoxypropylene diols or polyoxybutylene diols.
  • Polyether polyols also called polyoxyalkylene polyols or oligoetherols, are particularly suitable which are polymerization products of ethylene oxide, 1, 2-propylene oxide, 1, 2- or 2,3-butylene oxide, oxetane, tetrahydrofuran or mixtures thereof, optionally polymerized with the aid a starter molecule having two or more active hydrogen atoms, such as, for example, water, ammonia or compounds having several OH or NH groups, such as, for example, 1,2-ethanediol, 1,2- and 1,3-propanediol, neopentyl glycol, diethylene glycol, ethylene glycol, the isomeric dipropylene glycols and tripropylene glycols, the isomeric butanediols, pentanediols, hexanediols, heptanediols, octanediols, nonane
  • Both polyoxyalkylene polyols having a low degree of unsaturation (measured according to ASTM D-2849-69 and expressed in milliequivalents of unsaturation per gram of polyol (mEq / g)) prepared, for example, by means of so-called double metal cyanide complex catalysts (DMC Catalysts), as well as polyoxyalkylene polyols having a higher degree of unsaturation, prepared for example with the aid of anionic catalysts such as NaOH, KOH, CsOH or alkali metal alkoxides.
  • DMC Catalysts double metal cyanide complex catalysts
  • polyoxyethylene polyols and polyoxypropylene polyols are particularly suitable, in particular polyoxyethylene diols, polyoxypropylene diols, polyoxyethylene triols and polyoxypropylene triols.
  • Polyoxyalkylenediols or polyoxyalkylenetriols having a degree of unsaturation lower than 0.02 meq / g and having a degree of unsaturation are particularly suitable
  • ethylene oxide terminated polyoxypropylene polyols are so-called ethylene oxide terminated ("EO" endcapped) polyoxypropylene polyols, the latter being specific polyoxypropylene polyoxyethylene polyols obtained, for example, by pure polyoxypropylene polyols, especially polyoxypropylene diols and triols, upon completion of the polypropoxylation reaction alkoxylated with ethylene oxide and thereby having primary hydroxyl groups .
  • EO ethylene oxide terminated
  • styrene-acrylonitrile grafted polyether polyols such as are commercially available for example under the trade name Lupranol ® by the company Elastogran GmbH, Germany.
  • polyester polyols are polyesters which carry at least two hydroxyl groups and are prepared by known processes, in particular the polycondensation of hydroxycarboxylic acids or the polycondensation of aliphatic and / or aromatic polycarboxylic acids with dihydric or polyhydric alcohols.
  • polyester polyols which are prepared from dihydric to trihydric alcohols, for example 1,2-ethanediol, diethylene glycol, 1,2-propanediol, dipropylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6.
  • organic dicarboxylic acids or their anhydrides or esters such as succinic acid, glutaric acid, adipic acid, tri
  • polyester diols in particular those which are prepared from adipic acid, azelaic acid, sebacic acid, dodecanedicarboxylic acid, dimer fatty acid, phthalic acid, isophthalic acid and terephthalic acid as dicarboxylic acid or from lactones such as ⁇ -caprolactone and from ethylene glycol, diethylene glycol, neopentyl glycol, 1, 4 Butanediol, 1, 6-hexanediol, dimer fatty acid diol and 1, 4-cyclohexanedimethanol as a dihydric alcohol.
  • Suitable polycarbonate polyols are, in particular, those which are obtainable by reacting, for example, the abovementioned alcohols used for the synthesis of the polyester polyols with dialkyl carbonates, such as dimethyl carbonate, diaryl carbonates, such as diphenyl carbonate or phosgene.
  • dialkyl carbonates such as dimethyl carbonate, diaryl carbonates, such as diphenyl carbonate or phosgene.
  • Particularly suitable are polycarbonate diols, especially amorphous polycarbonate diols.
  • polystyrene resins are poly (meth) acrylate polyols.
  • polyhydroxy-functional fats and oils for example natural fats and oils, in particular castor oil, or so-called oleochemical polyols obtained by chemical modification of natural fats and oils, which are prepared, for example, by epoxidation of unsaturated oils and subsequent ring opening with carboxylic acids or
  • Alcohols obtained epoxy polyesters or Epoxypolyether, or obtained by hydroformylation and hydrogenation of unsaturated oils polyols.
  • polyols which from natural fats and oils by
  • Degradation processes such as alcoholysis or ozonolysis and subsequent chemical linkage, for example by transesterification or
  • Suitable degradation products of natural fats and oils are in particular fatty acids and fatty alcohols and fatty acid esters, in particular the methyl esters (FAME), which, for example, by Hydroformylation and hydrogenation can be derivatized to Hydroxyfettklam.
  • FAME methyl esters
  • polyhydrocarbon polyols also called oligohydrocarbonols, for example polyhydroxy-functional ethylene-propylene, ethylene-butylene or ethylene-propylene-diene copolymers, as are produced, for example, by Kraton Polymers, USA, or polyhydroxy-functional copolymers of dienes, such as 1, 3-butadiene or diene mixtures and vinyl monomers such as styrene, acrylonitrile or isobutylene, or polyhydroxy-functional polybutadiene, for example those which are prepared by copolymerization of 1, 3-butadiene and allyl alcohol or by oxidation of polybutadiene and may also be hydrogenated.
  • polyhydrocarbon polyols also called oligohydrocarbonols
  • polyhydroxy-functional ethylene-propylene, ethylene-butylene or ethylene-propylene-diene copolymers as are produced, for example, by Kraton Polymers, USA, or polyhydroxy-functional copolymers
  • Copolymers such as, for example, from epoxides or aminoalcohols and carboxyl-terminated acrylonitrile / butadiene copolymers (commercially available under the name Hypro ® CTBN from the company Emerald Performance
  • These stated polyols preferably have an average molecular weight of from 250 to 30 000 g / mol, in particular from 10 000 to 30 000 g / mol, and an average OH functionality in the range from 1.6 to 3.
  • small amounts of low molecular weight di- or polyhydric alcohols such as 1, 2-ethanediol, 1, 2- and 1, 3-propanediol, neopentyl glycol, diethylene glycol, triethylene glycol, the isomeric dipropylene glycols and tripropylene glycols, the isomeric Butanediols, pentanediols, hexanediols, heptanediols, octanediols, nonanediols, decanediols, undecanediols, 1, 3- and 1, 4-cyclohexanedimethanol, hydrogenated bisphenol A, dimeric fatty alcohols, 1,1,1-trimethylolethane, 1,1,1-tri- methylolpropane, glycerol, pentaerythritol, sugar alcohols such as XyNt,
  • suitable polyols P are described in Sections [0029] to [0039] of US 2006/0122352 A1, the entire disclosure of which is hereby incorporated by reference.
  • the free-radically polymerizable monomer M of the formula (III) is liquid at room temperature, which also includes viscous and highly viscous elastomers.
  • the proportion of free-radically polymerizable monomer M is preferably 10 to 90 wt .-%, in particular 25 to 75 wt .-%, preferably 30 to 65 wt .-%, of the total composition.
  • composition comprises at least one free radical generator.
  • the radical generator is in particular a peroxide, a hydroperoxide or a perester. Most preferably, the free radical generator is dibenzoyl peroxide.
  • the composition further comprises at least one catalyst for radical formation.
  • This catalyst is especially a tertiary amine, a transition metal salt or a transition metal complex.
  • a tertiary amine such as a tertiary amine, a transition metal salt or a transition metal complex.
  • aromatic amines in particular selected from the group consisting of N, N-dimethylaniline, N, N-diethylaniline, N, N-bis (hydroxyalkyl) aniline such as N 1 N-bis (2-hydroxyethyl) aniline, N, N-alkylhydroxyalkylaniline such as N-ethyl-N-hydroxyethylaniline, N, N-dimethyl-p-toluidine, N, N-diethyl-p-toluidine, N-methyl-N-hydroxyethyl-p-toluidine, N, N- Bis (2-hydroxyethyl) -p-toluidine and alkoxylated N, N
  • Transition metal salts and transition metal complexes are, for example, salts and complexes of cobalt, nickel, copper, manganese or vanadium.
  • Other preferred catalysts for radical formation are described, for example, in Sections [0041] - [0054] of US 2002/0007027 A1, the entire disclosure of which is hereby incorporated by reference.
  • the catalyst for the radical formation is usually used in an amount of 0.01 to 2.5 wt .-%, in particular from 0.1 to 2 wt .-%, based on the composition.
  • radical formers molecules which under the influence of heat or of electromagnetic radiation form radicals which then lead to the polymerization of the composition can also be used as radical formers.
  • radical formers typically these are thermally activatable free radical generators and photoinitiators.
  • Suitable thermally activatable radical formers are those which are still sufficiently stable at room temperature but already form radicals at a slightly elevated temperature.
  • Photoinitiators are free-radical formers which form radicals under the influence of electromagnetic radiation. Particularly suitable is a photoinitiator which forms free radicals upon irradiation with an electromagnetic radiation of the wavelength of 230 nm to 400 nm and is liquid at room temperature.
  • photoinitiators are selected from the group consisting of ⁇ -hydroxy ketones, phenylglyoxylates, monoacylphosphines, diacylphosphines, phosphine oxides and mixtures thereof.
  • composition comprises at least one epoxy resin
  • Epoxy resins A are preferably epoxy resins of the formula (IV).
  • the radical R 11 is a hydrogen atom or a methyl group.
  • the index p stands for a value of 0 to 12, in particular for a value of 0 to 1, preferably for a value of 0 to 0.2.
  • epoxy resin A is available from the reaction of
  • suitable epoxy resins A are also obtainable from the reaction of epichlorohydrin and / or 2-methylepichlorohydrin with an aminophenol of the formula H 2 N - X - OH or with a dianiline of the formula H 2 N - X - NH 2 , where the radical X is already previously described.
  • epoxy resins are N, N, O-triglycidyl-p-aminophenol, N, N 1 O-thglycidyl-m-aminophenol, N, N, N ', N'-tetraglycidyl-4,4'-diaminodiphenylmethane and N, N, N ', N'-tetraglycidyl-4,4'-diaminodiphenylpropane.
  • the radical X is bisphenol A or bisphenol F after removal of the two hydroxyl groups.
  • the epoxy resin A is preferably an epoxide
  • the composition also contains at least one solid epoxy resin in addition to the liquid epoxy resin.
  • Epoxy solid resin is the index p for values of> 1, in particular for values of> 1.5.
  • Preferred liquid epoxy resins are available commercially for example under the trade names Araldite ® GY 250, Araldite ® PY 304 or Araldite ® GY 282 from Huntsman International LLC, USA, or DER ® 331 or DER ® 330 from The Dow Chemical Company, USA, or under the trade name Epikote ® 828 or Epikote ® 862 from Hexion Specialty Chemicals Inc, USA.
  • Preferred solid epoxy resins are available commercially for example under the trade names Araldite ® GT 7071 or Araldite ® GT 7004 from Huntsman International, LLC, United States.
  • Other suitable solid epoxy resins are, for example, commercially available from The Dow Chemical Company, USA, or from Hexion Specialty Chemicals Ine, USA.
  • epoxy resins A for example, aliphatic polyepoxides of the formulas (V) or (VI).
  • r stands for a value from 1 to 9, in particular from 3 to 5.
  • u stands for a value from 0 to 10 and t for a value from 0 to 10, with the proviso that the sum of u and t ⁇ 1 is.
  • the radical R 11 has already been described above.
  • a represents the structural element derived from ethylene oxide
  • b represents the structural element derived from propylene oxide, wherein building blocks a and b may be block-like, alternating or random.
  • formula (VI) is (poly) ethylene glycol diglycidyl ether, (poly) propylene glycol diglycidyl ether and (poly) ethylene glycol / propylene glycol diglycidyl ether
  • Particularly suitable aliphatic or cycloaliphatic diglycidyl ethers are ethylene glycol diglycidyl ether, butanediol diglycidyl ether or hexanediol diglycidyl ether.
  • the proportion of epoxy resin A is preferably 5 to 40 wt .-%, in particular 8 to 30 wt .-%, preferably 15 to 25 wt .-%, of the total composition.
  • composition comprises at least one compound of the formula (I) as described above.
  • compounds can be prepared, for example, by double alkoxylation of alkylamines or by simple alkoxylation of N-alkylalkanolamines.
  • N-methyldiethanolamine is available from the reaction of methylamine with ethylene oxide.
  • Suitable compounds of the formula (I), in addition to N-methyldiethanolamine, are, for example, also N-methyldipropanolamine, N-methyldiisopropanolamine, N-butyldiethanolamine and the like.
  • composition of the invention may further comprise at least one bifunctional monomer L which is reactive with both the free-radically polymerizable monomer M and the epoxy resin A.
  • Such bifunctional monomers L are, for example, selected from the group consisting of glycidyl (meth) acrylate, ⁇ , ⁇ -unsaturated Carboxylic acids such as (meth) acrylic acid, ⁇ , ß-unsaturated dicarboxylic acids, 2- (meth) acrylamido-2-methylpropanesulfonic acid, maleic anhydride, partially hydrogenated phthalic anhydride and (meth) acrylates of the formula (VII).
  • glycidyl (meth) acrylate such as (meth) acrylic acid, ⁇ , ß-unsaturated dicarboxylic acids, 2- (meth) acrylamido-2-methylpropanesulfonic acid, maleic anhydride, partially hydrogenated phthalic anhydride and (meth) acrylates of the formula (VII).
  • the radical R 12 is either a hydrogen atom or a methyl group.
  • the subscript m stands for a value from 1 to 15, in particular from 1 to 5, preferably from 1 to 3.
  • the index q stands for a value of 1 to 3 and the index s for a value of 3 minus q.
  • such (meth) acrylates of the formula (VII) are 2-hydroxyethyl (meth) acrylate-phosphoric acid partial esters. Preference is given to bifunctional monomers which in at
  • the bifunctional monomer L is glycidyl (meth) acrylate.
  • the proportion of bifunctional monomer L is preferably 1 to 30 wt .-%, in particular 5 to 20 wt .-%, preferably 7 to 15 wt .-%, of the total composition.
  • composition may furthermore additionally contain at least one adhesion promoter, in particular a (meth) acrylic acid, a metal (meth) acrylate or a (meth) acrylate of the formula (VII), as described above.
  • adhesion promoter in particular a (meth) acrylic acid, a metal (meth) acrylate or a (meth) acrylate of the formula (VII), as described above.
  • Preferred metal (meth) acrylates are metal (meth) acrylates of
  • Calcium, magnesium or zinc which have a hydroxyl group and / or (meth) - acrylic acid or (meth) acrylate as a ligand or anion.
  • Particularly preferred metal (meth) acrylates are zinc di (meth) acrylate, calcium di (meth) acrylate, Zn (OH) (meth) acrylate and magnesium di (meth) acrylate.
  • Preferred (meth) acrylates of the formula (VII) are 2-methacryloyloxyethyl phosphate, bis (2-methacryloyloxyethyl) phosphate and tris (2-methacryloyl-oxyethyl) phosphate and mixtures thereof.
  • adhesion promoters are silanes, in particular organofunctional silanes.
  • Particularly suitable are (meth) acryloxyalkyltrialkoxysilanes such as 3-methacryloxypropyltrimethoxysilane, glycidyloxyalkyl trialkoxysilanes such as 3-glycidoxypropyltrimethoxysilane, and the like.
  • such suitable silanes under the trade name Dynasylan ® MEMO from Evonik Degussa GmbH, Germany, or under the trade name Silquest ® A-187, Momentive Performance Materials Inc., USA, are commercially available.
  • the proportion of the optional adhesion promoter to the total composition is preferably 0.01 to 12 wt .-%, in particular 0.5 to 8 wt .-%.
  • composition may additionally contain at least one core-shell polymer.
  • Core-shell polymers consist of an elastic core polymer (core) and a rigid shell polymer (shell).
  • Particularly suitable core-shell polymers consist of a rigid shell of a rigid thermoplastic polymer grafted onto a core of crosslinked elastic acrylate or butadiene polymer.
  • Particularly suitable core-shell polymers are those which swell in the free-radically polymerizable monomer M, but do not dissolve therein.
  • Preferred core-shell polymers are the so-called MBS polymers commercially for example under the trade name Clearstrength ® from Arkema Inc., USA, or Paraloid ® from Rohm and Haas, USA, is.
  • the core-shell polymers are preferably used in an amount of from 0.01 to 30% by weight, in particular from 10 to 20% by weight, based on the total composition.
  • the composition may further contain additional solid or liquid toughening agents.
  • a “toughener” is here and hereinafter understood to mean an addition to a polymer matrix which, even at low additions of from 0.1 to 15% by weight, in particular from 0.5 to 8% by weight, based on the total weight of the composition Increases the toughness and thus is able to absorb higher bending, tensile, impact or impact stress before the matrix penetrates or breaks.
  • suitable solid tougheners are, for example, organic ion-exchanged layer minerals, as known to the person skilled in the art under the terms organoclay or nanoclay; Polymers or block copolymers, in particular the monomers styrene, butadiene, isoprene, chloroprene, acrylonitrile and methyl methacrylate, and chlorosulfonated polyethylene; and amorphous silica.
  • liquid toughness are particularly suitable liquid rubbers as commercially available under the trade name Hypro ® CTBN ETBN or VTBN are performance from the company Emerald Performance Materials, LLC, USA, and epoxidharzmod e liquid rubbers of the type Hypro ® CTBN.
  • the composition may additionally contain at least one filler.
  • Particularly suitable are natural, ground or precipitated calcium carbonates (chalks), which are optionally coated with fatty acids, in particular stearates, montmorillonites, bentonites, barium sulfate (BaSO 4 , also called barite or barite), calcined kaolins, quartz powder, aluminum oxides, Aluminum hydroxides, silicic acids, in particular fumed silicas, modified castor oil derivatives and polymer powder or polymer fibers.
  • fatty acids in particular stearates, montmorillonites, bentonites, barium sulfate (BaSO 4 , also called barite or barite)
  • BaSO 4 barium sulfate
  • calcined kaolins quartz powder
  • aluminum oxides aluminum oxides
  • Aluminum hydroxides Aluminum hydroxides
  • silicic acids in particular fumed silicas
  • modified castor oil derivatives and polymer powder or polymer fibers.
  • the filler is usually used in an amount of 0.01 to 30 wt .-%, in particular from 10 to 30 wt .-%, preferably 15 to 20 wt .-%, based on the total composition.
  • the composition may additionally have at least one reactive diluent G having epoxide groups.
  • reactive diluents G are in particular glycidyl ethers of monofunctional saturated or unsaturated, branched or unbranched, cyclic or open-chain alcohols having 4 to 30 C atoms, for example butanol glycidyl ether, hexanol glycidyl ether, 2-ethylhexanol glycidyl ether, allyl glycidyl ether, tetrahydrofurfuryl and furfuryl glycidyl ether , Trimethoxysilyl glycidyl ether and the like.
  • glycidyl ethers of difunctional saturated or unsaturated, branched or unbranched, cyclic or open-chain alcohols having 2 to 30 carbon atoms for example ethylene glycol, butanediol, hexanediol, octanediol, Cyclohexandimethanoldigylcidylether, Neopentylglycoldiglycidylether and the like.
  • glycidyl ethers of trifunctional or polyfunctional, saturated or unsaturated, branched or unbranched, cyclic or open-chain alcohols such as epoxidized castor oil, epoxidized trimethylolpropane, epoxidized pentaerythrol or polyglycidyl ethers of aliphatic polyols such as sorbitol, glycerol, trimethylolpropane and the like.
  • glycidyl ethers of phenolic and aniline compounds such as phenyl glycidyl ether, cresyl glycidyl ether, p-tert-butylphenyl glycidyl ether, nonylphenol glycidyl ether, 3-n-pentadecenyl glycidyl ether (from cashew nut shell oil), N, N-diglycidyl aniline and the like.
  • epoxidized amines such as N, N-diglycidylcyclohexylamine and the like; epoxidized mono- or dicarboxylic acids such as glycidyl neodecanoate, glycidyl methacrylate, glycidyl benzoate, diglycidyl phthalate, tetra- and hexahydrophthalate, diglycidyl esters of dimer fatty acids, and the like; and epoxidized di- or trifunctional, low to high molecular weight polyether polyols such as polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether and the like.
  • the proportion of reactive diluent G comprising epoxide groups is from 0.5 to 20% by weight, preferably from 1 to 8% by weight, based on the total weight of the composition.
  • composition may, if appropriate, additionally
  • Such additional constituents are, in particular, toughening modifiers, dyes, pigments, inhibitors, UV and heat stabilizers, metal oxides, antistatic agents, flame retardants, biocides, plasticizers, waxes, leveling agents, adhesion promoters, thixotropic agents, spacers and other common raw materials and additives known to the person skilled in the art.
  • the composition is preferably a two-component composition, wherein two components K1 and K2 are stored separately from each other until application.
  • the first component K1 comprises the free-radically polymerizable monomer M, the compound of the formula (I) and the optionally present bifunctional monomer L.
  • the second component K2 contains in particular the free radical generator and the epoxy resin A.
  • Component K1 in the described two-component compositions preferably contains the constituents radically polymerizable monomers M, compounds of the formula (I), catalysts for radical formation, bifunctional monomers L, adhesion promoters and fillers and component K2 the constituents epoxy resin A, free-radical formers and fillers.
  • the volume ratio when mixing K1 to K2 is in particular in the range from 1: 1 to 10: 1.
  • Such a two-component composition is typically stored in a package having two separate chambers.
  • the component K1 is in this case in one chamber and the component K2 is present in the other chamber of the package.
  • Suitable packages are, for example, double cartridges, such as twin or coaxial cartridges, or multi-chamber tubular bags with adapters.
  • the mixing of the two components K1 and K2 takes place with the aid of a static mixer, which can be placed on the package with two chambers.
  • the two components K1 and K2 are typically stored separately in barrels or hobbocks and, during application, for example, by means of gear pumps, pressed out and mixed.
  • the composition can be applied to a substrate by hand or in an automated process by means of robots.
  • composition of the invention is cured on the one hand by a radical polymerization reaction of the free-radically polymehsierbaren monomers M and optionally further radically polymerizable constituents in the composition, on the other hand by a homopolymerization reaction of the epoxy resin A under the influence of the compound of formula (I).
  • the process, in particular the speed, of the two reactions leading to the curing of the composition can be adjusted by the choice of the constituents used. Typically, it runs the curing of the composition in two stages. In a first step, the radical polymerization reaction takes place, whereby the composition obtains a high initial strength even at an early stage. In a second step, the slower homopolymerization of the epoxy resin proceeds. As a result, the composition further hardens and obtains its high final strength.
  • the compound of the formula (I) present in the composition is a bifunctional monomer, that is to say R 2 and / or R 9 are a radical of the formula (II), with respect both to the free-radically polymerizable monomer Monomer M as well as with respect to the epoxy resin A is reactive.
  • composition is curable in particular at room temperature, that is at a temperature in the range of 23 0 C.
  • room temperature that is at a temperature in the range of 23 0 C.
  • the composition may also be cured at elevated temperatures, however, the
  • the invention relates to the use of a composition, as described above, as an adhesive, sealant or as a coating.
  • the composition according to the invention is suitable for bonding, sealing or coating substrates in which no thermosetting adhesives, sealants and coatings can be used due to the nature of the material and / or the process. This may be due, for example, to the fact that substrates to be bonded, sealed or coated may be exposed when exposed to elevated temperatures which are often necessary for curing epoxy resin-containing compositions as described in the prior art.
  • substrates are, for example, plastics such as polyethylene, polypropylene, polyvinyl chloride and polymethyl (meth) acrylate and coated substrates.
  • the substrate on the surface of which the composition is applied may have been previously treated with suitable pretreatment agents or cleaners.
  • suitable pretreatment agents or cleaners include, in particular, physical and / or chemical cleaning methods, for example grinding, sandblasting, brushing or the like, or treatment with cleaners or solvents, or flame treatment or plasma treatment, in particular air plasma treatment at atmospheric pressure.
  • composition of the invention is used in particular in a method of bonding two substrates S1 and S2 comprising the steps of i) applying a composition according to the preceding
  • the second substrate S2 consists of the same or a different material as the substrate S1.
  • at least partial mixing of the two components takes place.
  • the two components K1 and K2 mix during the joining of the substrates.
  • This method is particularly suitable for gluing over very thin adhesive layers.
  • composition according to the invention is also used in a method of sealing or coating a substrate S1 comprising the steps i '") applying a composition as described above to a substrate S1; ii'") curing the composition.
  • step i "') In the case of a two-component composition, before step i "'), at least partial mixing of the two components takes place.
  • the present invention comprises a cured
  • composition obtainable from a previously described composition by a curing process.
  • the composition is a two-component composition such that the cured composition is obtainable by at least partial mixing of the two components K1 and K2.
  • the curing process proceeds at room temperature.
  • the invention also includes articles which have been bonded, sealed or coated by a previously described method.
  • These articles are preferably a building, in particular a building construction or civil engineering, or an industrial good or a consumer good, in particular a window, a household machine, a tool or a means of transport, in particular a vehicle at sea or on land, preferably an automobile, a bus, a truck, a train or a ship.
  • Such articles are preferably also add-on parts of industrial goods or means of transport, in particular also module parts which are used on the production line as modules and in particular are glued or glued on.
  • these prefabricated attachments are used in transport construction.
  • such attachments are cabs of trucks or locomotives or sunroofs of automobiles.
  • these articles are windows and doors, as used in buildings.
  • the invention encompasses the use of a compound of formula (I), as previously described, as a curing agent for compositions comprising both at least one epoxy resin and at least one free radically polymerizable monomer.
  • the radicals R 2 and / or R 9 in the compound of the formula (I) are radicals of the formula (II).
  • the compound of the formula (I) is a bifunctional compound or a bifunctional monomer which serves as a curing agent for the epoxy resin and can be incorporated as a radical polymerizable monomer in the polymer matrix and in particular also incorporated.
  • Particularly preferred is the compound of formula (I) for this purpose, because it initiates or favors the homopolymerization of the epoxy resin, but does not affect the radical polymerization reaction.
  • compositions were prepared: As component K1, the constituents listed in Tables 1 in the proportions by weight were mixed together in a dissolver at a maximum temperature of 80 ° C. and stirred until a macroscopically homogeneous paste was obtained.
  • component K2 As component K2, the constituents listed in Tables 1 were mixed together in the proportions by weight stated in a dissolver.
  • the produced components K1 and K2 were introduced into the separate chambers of coaxial cartridges and mixed during application by means of static mixer.
  • the tensile strength, elongation at break and the elastic modulus were determined according to DIN EN 53504 (pulling speed: 200 mm / min) aushärteten of films with a layer thickness of 2 mm, which under standard conditions (23 ⁇ 1 0 C, 50 ⁇ 5% relative humidity). The samples were tested directly and continuously after their preparation.
  • the elastic modulus is given in the range of 0.5 to 1% elongation.
  • Table 1 Compositions 1 to 3 and the reference examples Ref1 to Ref3 in parts by weight and the results; a catalyst for radical formation (toluidine-based tertiary amine); b 40% by weight in plasticizer; c The measurements were carried out after 3 hours; k.A .: not specified; In the example Ref3 no hardening occurred.

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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)
  • Epoxy Resins (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Macromonomer-Based Addition Polymer (AREA)

Abstract

La présente invention concerne une composition qui comprend au moins un monomère polymérisable par voie radicalaire M; au moins un générateur de radicaux; au moins une résine époxy A, qui présente en moyenne plus d'un groupe époxy par molécule; et au moins un composé de formule (I). De telles compositions se prêtent à une utilisation comme adhésifs, agents d'étanchéité ou revêtements. Peu après leur application, ces compositions manifestent une grande résistance initiale et, après durcissement à température ambiante, une grande résistance finale.
EP09780749A 2008-07-17 2009-07-17 Composition époxy/(méth)acrylate Withdrawn EP2313463A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09780749A EP2313463A2 (fr) 2008-07-17 2009-07-17 Composition époxy/(méth)acrylate

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH11192008A CH699184A2 (de) 2008-07-17 2008-07-17 Epoxid/(Meth)acrylat Zusammensetzung.
EP08169630A EP2189500A1 (fr) 2008-11-21 2008-11-21 Composition d'époxide/(méth)acrylate
PCT/EP2009/059200 WO2010007148A2 (fr) 2008-07-17 2009-07-17 Composition époxy/(méth)acrylate
EP09780749A EP2313463A2 (fr) 2008-07-17 2009-07-17 Composition époxy/(méth)acrylate

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EP2313463A2 true EP2313463A2 (fr) 2011-04-27

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EP (1) EP2313463A2 (fr)
WO (1) WO2010007148A2 (fr)

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US9115281B2 (en) 2010-02-11 2015-08-25 Dsm Ip Assets B.V. Multicomponent resin system
JP2013519746A (ja) * 2010-02-11 2013-05-30 ディーエスエム アイピー アセッツ ビー．ブイ． 二成分樹脂系
WO2014108553A1 (fr) * 2013-01-14 2014-07-17 Henkel Ag & Co. Kgaa Collage de surfaces en polyamide
KR20210118289A (ko) * 2020-03-19 2021-09-30 삼성디스플레이 주식회사 전자 소자용 밀봉 또는 충전 조성물 및 전자 장치
WO2024075480A1 (fr) * 2022-10-04 2024-04-11 三菱瓦斯化学株式会社 Composition de résine thermodurcissable, produit durci de celle-ci, préimprégné, matériau composite renforcé par des fibres et récipient de gaz à haute pression

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WO2010007148A2 (fr) 2010-01-21
WO2010007148A3 (fr) 2010-03-11
US20120022183A1 (en) 2012-01-26
US8318870B2 (en) 2012-11-27
US20130079437A1 (en) 2013-03-28

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