EP2019734A1 - Procédé d'application d'une composition d'adhésif avec un pulvérisateur à ultrasons - Google Patents

Procédé d'application d'une composition d'adhésif avec un pulvérisateur à ultrasons

Info

Publication number
EP2019734A1
EP2019734A1 EP07729198A EP07729198A EP2019734A1 EP 2019734 A1 EP2019734 A1 EP 2019734A1 EP 07729198 A EP07729198 A EP 07729198A EP 07729198 A EP07729198 A EP 07729198A EP 2019734 A1 EP2019734 A1 EP 2019734A1
Authority
EP
European Patent Office
Prior art keywords
substrate
use according
ultrasonic atomizer
component
adhesion promoter
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Withdrawn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
EP07729198A
Other languages
German (de)
English (en)
Inventor
Manuel Buck
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
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 Sika Technology AG filed Critical Sika Technology AG
Priority to EP07729198A priority Critical patent/EP2019734A1/fr
Publication of EP2019734A1 publication Critical patent/EP2019734A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/34—Applying different liquids or other fluent materials simultaneously
    • 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
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/02—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving pretreatment of the surfaces to be joined
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal

Definitions

  • hydrolyzable liquids in particular adhesion promoter compositions
  • Hydrolyzable liquids such as primer compositions have long been used to improve adhesion, particularly those of adhesives and sealants.
  • silane and titanate compounds have long been known as such adhesion promoter compositions.
  • These primer compositions are used as primers or adhesion activators for the pretreatment of surfaces to be bonded or sealed.
  • the problem with all conventional application methods is that it is difficult to apply the adhesion promoter compositions in small amounts.
  • the primer compositions are partially diluted, preferably with a volatile solvent.
  • primer compositions are often used in closed production facilities where the evaporation of the solvents poses a health risk to the workers, there is a need to provide a process which also permits the application of solventless primer substances.
  • the object of the present invention is therefore to provide a method which overcomes the disadvantages of the prior art and in particular enables to apply hydrolyzable liquids to a predefined area of a surface and in particular to allow a uniform distribution even on uneven surfaces.
  • an ultrasonic atomizer is such an agent, which solves this problem.
  • This method is particularly suitable for adhesion promoter compositions, which for the improvement of adhesion for adhesive and
  • Layers can be applied to a surface.
  • a two-component hydrolyzable liquid can also be applied.
  • the use of the ultrasonic atomizer permits a fast and safe application process of a primer composition, resulting in a faster and safer process of bonding and sealing as well as lower material or processing costs. Further objects of the present invention are therefore also a
  • the present invention relates to the use of an ultrasonic atomizer for applying a hydrolyzable liquid to at least one substrate surface.
  • ultrasonic atomizers conventional ultrasonic atomizers can be used, which comprise an ultrasonic transducer in which mechanical oscillations are generated by means of piezoceramic elements from electrical vibrations.
  • the piezoceramic element is wetted in the present invention with reactive liquid and vibrated by ultrasound.
  • the liquid is excited into capillary waves, from the tip of fine droplets are pinched off and thrown off.
  • the operating frequency of the piezoceramic Elements at 1 to 1000 kHz, in particular at 10 to 500 kHz, preferably at 20 to 200 kHz, more preferably at 50 to 100 kHz.
  • the ultrasonic atomizer is part of a spray device for producing a directional spray
  • the atomizer device comprises a housing part with a container for receiving the liquid to be atomized and an application nozzle, which directs the direction of the droplets, so that the hydrolyzable liquid by uniform distribution of the amount of liquid supplied forms a limited liquid film of the desired layer thickness on the substrate surface.
  • the ultrasonic atomizer is part of the application nozzle.
  • ultrasonic atomisers which produce a nebulized liquid which, for the most part, i. a maximum in frequency distribution, contains droplets with a diameter of less than 200 microns, preferably between 1 and 100 microns, even more preferably between 10 and 70 microns, most preferably between 20 and 60 microns.
  • an ultrasonic nebulizer is used, which can be adjusted to produce a liquid film of the hydrolyzable liquid on the substrate surface having a dry film thickness of preferably between about 10 nm and 15 ⁇ m, more preferably between 50 nm and 1 ⁇ m, even more preferably between 70 and 150 nm. It is possible that several layers are applied one after the other.
  • the hydrolyzable liquid is thereby applied in an amount between 5 and 200 g / m 2 , in particular between 10 and 100 g / m 2 , and, in the case of a primer composition containing organosilicon, organo-titanium and / or organo-silicium.
  • Zirconium compound in an amount of 0.02 to 40 g / m 2 , in particular 0.1 to 20 g / m 2 , preferably 0.5 to 10 g / m 2 of organosilicon, organo-titanium and / or organozirconium compound.
  • Particularly suitable is an ultrasonic atomizer from Lechler GmbH, Germany, has proven, in particular the ultrasonic atomizer of the type US2 or US1.
  • Atomizer device has been found, in which the hydrolyzable liquid, in particular the adhesion promoter composition is applied by means of at least one carrier gas to the substrate surface.
  • the carrier gas ordinary ordinary air, oxygen, carbon dioxide or an inert gas such as nitrogen or argon come into question.
  • the carrier gas in particular air, may contain a certain amount of moisture, in particular water. If air is used as a carrier gas, the humidity at 20 0 C is preferably between 20 and 70%.
  • the amount of water is preferably such that the hydrolyzable liquid can hydrolyze or partially hydrolyze until it encounters the surface to be treated.
  • the carrier gas may under pressure convey the liquid droplets generated by the ultrasonic atomizer onto the substrate surface.
  • the atomizer pressure can be selected so that the droplets can bridge longer distances and are less affected by restless ambient atmosphere. However, the pressure should only be chosen so high, so that the liquid droplets usually do not bounce too much from the substrate surface and not too dirty the edge of the application surface.
  • the pressure is preferably between 0 and 5 bar, more preferably between 1 and 2 bar, preferably about 1 bar. This means that the liquid droplets can be applied to a substrate surface both with and without additional carrier gas.
  • the liquid droplets are dropped by gravity on the substrate surface
  • the liquid droplets are applied in a gas stream, possibly also in a protective atmosphere, targeted to the surface.
  • the carrier gas may comprise at least one additional component K2, which coincides with the droplets of the first generated by the ultrasonic atomizer Component K1, which contains at least one hydrolyzable liquid, is applied to the substrate surface. It may be advantageous if the second component K2 is also passed through a second ultrasonic atomizer, whereby the second component K2 is atomized into droplets.
  • the carrier gas then directs the droplets of the second component K2 past the ultrasonic atomizer for the first component K1 of the hydrolyzable liquid to the substrate surface, wherein the droplets of the component K2 mix with the droplets of the component K1 and optionally react with each other or wherein the droplets of the component K2 initiate or catalyze a condensation of component K1.
  • the order of whether first the first component K1 or the second component K2 is taken up by the carrier gas and then passed over the respective other component, can be chosen arbitrarily.
  • the first component K1 has at least one functional group Y and the second component K2 has at least one functional group Z, the functional group Y and the functional group Z reacting chemically, in particular via an addition reaction.
  • the functional group Y is in particular selected from the group comprising oxirane, (meth) acryloxy, NCO, alkoxysilane and vinyl group, in particular NCO, epoxy, (meth) acrylic acid, (meth) acrylate and alkoxysilane, and the group Z is in particular selected from the group comprising COOH, NH 2 , NH, SH and OH.
  • Component K2 which reacts with component K1 or which triggers or catalyzes a condensation of component K1, is preferably an organotin compound or an acid.
  • the component K2 is an organotin compound and preferably provides a dialkyl-tin compound. diacetylacetonate or a dialkyltin dicarboxylate, and is especially dibutyltin dilaurate or dibutyltin diacetate.
  • Component K2 is preferably dibutyltin dilaurate.
  • the component K2 is an acid.
  • the acid may be an organic or an inorganic acid.
  • the acid typically has a pKal of less than 6.
  • Particularly suitable inorganic acids are phosphorus-containing acids or sulfur-containing acids.
  • Particularly suitable sulfonic acid or phosphoric acid, in particular sulfuric acid have proven.
  • organic acids are particularly suitable formic, acetic, amino acid.
  • Acetic acid has proved to be particularly suitable.
  • the first component K1 contains at least one compound which polymerizes under the influence of a catalyst or initiator which is present in the second component K2.
  • Compound of component K1 is an unsaturated compound which is selected from the group consisting of styrene, acrylonitrile,
  • the second component K2 of this embodiment contains as an initiator
  • Radical former in particular a peroxide or hydroperoxide or a perester, preferably an organic peroxide.
  • the components K1 to K2 may contain further constituents, as are known to those skilled in the art for two-component compositions.
  • Such further constituents are in particular additives such as plasticizers, fillers, adhesion promoters, UV absorbers, UV and / or heat stabilizers, antioxidants, flame retardants, optical brighteners, catalysts, color pigments or dyes.
  • Particularly preferred as further such constituents are fillers.
  • Preferred fillers are carbon black and chalks, both coated and uncoated.
  • hydrolyzable liquid which can be applied according to the present invention with an ultrasonic atomizer, throughout the present text is meant a liquid which reacts with water and is thereby split.
  • Particularly suitable hydrolyzable liquids are adhesion promoter compositions, in particular Adhesion agent compositions comprising at least one hydrolyzable adhesion promoter substance comprising or consisting of a silane, titanate and / or zirconium compound.
  • the at least one hydrolyzable adhesion promoter substance can be an organosilicon compound.
  • organosilicon compounds known to the person skilled in the art, which are used as adhesion promoters, are suitable.
  • This organosilicon compound preferably carries at least one, in particular at least two, alkoxy groups which are or are bonded directly to a silicon atom via an oxygen-silicon bond.
  • the organosilicon compound carries at least one substituent which is bonded via a silicon-carbon bond to the silicon atom, and which optionally has a functional group which is selected from the group comprising oxirane, hydroxy, (meth) acryloxy, amino , Mercapto and vinyl groups.
  • organosilicon compounds are particularly suitable organosilicon compounds of the formulas formula (I) or (II) or
  • R 1 here represents a linear or branched, optionally cyclic, alkylene group having 1 to 20 C atoms, optionally with aromatic moieties, and optionally with one or more heteroatoms, in particular nitrogen atoms.
  • R 2 here stands for an alkyl group having 1 to 5 C atoms, in particular methyl or ethyl, or an acyl group.
  • R 3 here stands for an alkyl group having 1 to 8 C atoms, in particular methyl.
  • X in this case represents an H, or a functional group which is selected from the group comprising oxirane, OH, (meth) acryloxy, amine,
  • acylthio in this document means the substituent oU 6 ⁇ , where R is alkyl, in particular 1 to
  • X I here stands for a functional group which is selected from the group comprising NH, S, S 2 and S 4 .
  • X 2 here stands for a functional group which is selected from the group comprising N and isocyanurate. a stands for one of the values 0, 1 or 2, preferably 0.
  • the substituent R 1 is in particular a methylene, propylene, methylpropylene, butylene or dimethylbutylene group. As is particularly preferred. As substituent R 1 is a propylene group. Amino, mercapto or oxirane group-containing organosilicon compounds are also referred to as "aminosilanes", “mercaptosilanes” or “epoxysilanes”.
  • Suitable organosilicon compounds of the formula (I) are, for example, the organosilicon compounds selected from the group comprising octyltrimethoxysilane, dodecyltrimethoxysilane, hexadecyltrimethoxysilane, methyloctyldimethoxysilane; 3-glycidyloxypropyltrimethoxysilane, 3-glycidyloxypropyltriethoxysilane; 3-methacryloxypropyltrialkoxysilanes, 3-methacryloxypropyltriethoxysilane, 3-methacryloxypropyltrimethoxysilane;
  • organosilicon compounds cleave acetic acid in the hydrolysis.
  • organosilicon compounds are those which have an organic atom bound to the silicon atom
  • Substituents have, which additionally have a functional group, that is, which is not an alkyl group, and a formula (I) correspond, in which X is not H.
  • Suitable organosilicon compounds of the formula (II) are, for example, the organosilicon compounds selected from the group comprising bis [3- (trimethoxysilyl) -propyl] -amine, bis- [3- (triethoxysilyl) -propyl] -amine, 4 , 4,15,15-tetraethoxy-3,16-dioxa-8,9,10,11-tetrathia-4-15-disilaoctadecane (bis (triethoxysilylpropyl) polysulfide or bis (triethoxysilylpropyl) tetrasulfane), bis (triethoxysilyl) propyl) disulfide.
  • 3-aminopropyltrimethoxysilane N- (2-amino ethyl) -3-aminopropyltrimethoxysilane, bis [3- (thmethoxysilyl) -propyl] -amine, 3-aminopropyltriethoxysilane, N- (2-aminoethyl) -3-aminopropyltriethoxysilane and bis [3- (triethoxysilyl) -propyl ] -amin and their mixtures with each other. It has been found that especially with aminosilane
  • the at least one hydrolyzable adhesion promoter substance can furthermore be an organotitanium compound.
  • organotitanium compounds which are known to the person skilled in the art and which are used as adhesion promoters are suitable.
  • Particularly suitable are organotitanium compound which carries at least one functional group selected from the group consisting of alkoxy group, sulfonate group, carboxylate group, dialkyl phosphate group, dialkyl pyrophosphate group and acetylacetonate group, or mixtures thereof, and which have an oxygen-titanium bond directly to a titanium atom is bound.
  • Particularly suitable compounds are those in which all substituents bound to the titanium are selected from the group comprising alkoxy group,
  • Sulfonate group, carboxylate group, dialkyl phosphate group, dialkyl pyrophosphate group and acetylacetonate group are selected, all
  • Substituents may be identical or different from each other.
  • Particularly suitable sulfonic acids are aromatic sulfonic acids whose aromatic groups have been substituted by an alkyl group.
  • Preferred sulfonic acids are radicals of the following formula (V)
  • carboxylate groups have in particular carboxylates of
  • Fatty acids proved particularly suitable.
  • Preferred carboxylates are decanoate.
  • Organo-titanium compounds are commercially available, for example from Kenrich Petrochemicals or DuPont.
  • suitable organotitanium compound compounds are, for example, Ken-React® KR TTS, KR 7, KR 9S, KR 12, KR 26S, KR 33DS, KR 38S, KR 39DS, KR44, KR 134S, KR 138S, KR 158FS, KR212, KR 238S, KR 262ES, KR 138D, KR 158D, KR238T, KR 238M, KR238A, KR238J, KR262A, LICA 38J, KR 55, LICA 01, LICA 09, LICA 12, LICA 38, LICA 44, LICA 97, LICA 99, KR OPPR, KR OPP2 from Kenrich Petrochemicals or Tyzor® ET, TPT,
  • organotitanium compounds having substituents of the formulas (IV) and / or (V) bonded to the titanium atom via an oxygen-titanium bond.
  • the at least one hydrolyzable adhesion promoter substance can furthermore be an organozirconium compound.
  • organozirconium compounds known to the person skilled in the art, which are used as adhesion promoters, are suitable.
  • organozirconium compounds which carry at least one functional group which is selected from the group comprising alkoxy group, sulfonate group, carboxylate group, phosphate group or mixtures thereof, and which is bonded directly to a zirconium atom via an oxygen-zirconium bond.
  • Particularly suitable alkoxy groups are, in particular, isopropoxy and so-called neoalkoxy substituents, in particular of the formula (IV) as described above, the dashed bond indicating the oxygen-zirconium bond in this case.
  • Particularly suitable sulfonic acids are aromatic sulfonic acids whose aromatic groups have been substituted by an alkyl group.
  • Preferred sulfonic acids are radicals of the following formula (V) as described above, where the dashed bond indicates the oxygen-zirconium bond.
  • carboxylates of fatty acids have proved particularly suitable as carboxylate groups.
  • Preferred carboxylates are stearates and isostearates.
  • Organozirconium compounds are commercially available, for example from Kenrich Petrochemicals.
  • suitable organozirconium compounds are, for example, Ken-React® NZ 38J, NZ TPPJ, KZ OPPR, KZ TPP, NZ 01, NZ 09, NZ 12, NZ38, NZ 44, NZ 97.
  • the adhesion promoter substance of the composition according to the invention may contain mixtures of at least one organosilicon compound with at least one organotitanium compound and / or with at least one organozirconium compound.
  • mixtures of at least one organotitanium compound with at least one organozirconium compound are possible. Preference is given to mixtures of at least one organosilicon compound with at least one organotitanium compound.
  • mixtures of a plurality of organosilicon compounds or mixtures of an organosilicon compound with an organotitanium compound or organozirconium compound are particularly suitable as mixtures of organosilicon compounds, where at least one of these substituents carries H as substituent X and at least one of these substances has a functional group which is selected from the group comprising oxirane, (Meth ) acryloxy, amine, SH and vinyl, carries as substituents X.
  • These mixtures are preferably at least one alkyl trialkoxysilane with an aminoalkyltrialkoxysilane and / or mercaptoalkyltrialkoxysilane.
  • the adhesion promoter composition may comprise further constituents in addition to the described hydrolyzable adhesion promoter substances.
  • a further component for example, at least one solvent comes in
  • suitable solvents are, in particular, readily volatile solvents, ie those having a boiling point at 760 Torr of between 25 ° C and 140 0 C, in particular of between 50 0 C and 120 ° C, preferably of between 65 and 99 ° C.
  • less volatile solvents ie those solvents which have a boiling point at 760 Torr above the baking temperature are suitable.
  • they have a boiling point of> 100 0 C, preferably between 100 ° C and 200 0 C, preferably between 140 ° C and 200 ° C, on.
  • mixtures of different solvents are advantageous. It has proven particularly suitable if mixtures of hydrocarbons with one another or mixtures of at least one hydrocarbon with at least one polar solvent which has at least one heteroatom in its structural formula are used.
  • the hydrocarbon may be saturated or olefinically or aromatically unsaturated. Preferably, the hydrocarbon is saturated.
  • the hetero atom in the polar solvent O, N and S are particularly suitable.
  • the at least one heteroatom is an oxygen atom, which is particularly preferably in the form of hydroxyl, carbonyl, ether, carboxylic acid or carboxylic acid derivative groups, such as ester, amide or carboxylate group, in the structural formula of the polar solvent
  • Preferred polar solvents are water, alcohols and ketones. Most preferred polar solvents are alcohols, in particular saturated, branched or linear or cyclic alcohols having 1 to 8 carbon atoms.
  • Preferred solvents are alcohols and aliphatic and cycloaliphatic hydrocarbons, in particular ethanol, isopropanol, hexane, cyclohexane, heptane or octane, and mixtures thereof.
  • the solvent is ethanol or heptane.
  • Solvent mixtures of an alcohol and of an aliphatic or cycloaliphatic hydrocarbon are particularly preferred.
  • the mixture of ethanol and heptane has been shown.
  • less volatile solvents are in particular hydrocarbons such as toluene, xylene or a hydrocarbon mixture having a boiling point between 120 0 C and 200 0 C, in particular between 12o ° C and 140 0 C.
  • a solvent can be accomplished by homogeneously small concentrations of Adhesive substances, ie organosilicon compound and / or organotitanium compound, can be applied to a surface.
  • the content of solvent is preferably selected such that the content of organosilicon compound and / or organotitanium compound of 0.1 to 10 wt .-%, in particular between 0.5 to 10 wt .-%, having.
  • the adhesion promoter composition contains no solvent and the content of organosilicon compound, organozirconium compound and / or organotitanium compound of more than 90 wt .-%, in particular of more than 99 wt .-%, is.
  • organosilicon compound, organozirconium compound and / or organotitanium compound of more than 90 wt .-%, in particular of more than 99 wt .-%, is.
  • limitations or disadvantages imposed by VOC regulations can be avoided.
  • a reactive binder may be present, in particular polyurethane prepolymers with isocyanate groups and / or silane groups to be mentioned; or polyisocyanates may be present, for example tris (4-isocyanatophenyl) methane, tris (4-isocyanatophenyl) thiophosphate, the already mentioned monomeric MDI, TDI, HDI and IPDI, and oligo-, poly- or copolymers of these monomers, such as polymeric HDI, polymeric MDI, available commercially for example as Voranate M 229 ® (Dow), Desmodur ® VL R 20 (Bayer), or allophanates, biurets, uretdiones and isocyanurates of these monomers, in particular HDI biurets, such as commercially available as Desmodur ® N-100 (Bayer), Luxate ® HDB 9000 (Lyondell / Bayer),
  • Catalysts for the hydrolysis of, for example, silane groups for example in the form of organic carboxylic acids such as benzoic acid or salicylic acid, organic carboxylic anhydrides such as phthalic anhydride or hexahydrophthalic anhydride, silyl esters of organic carboxylic acids, organic sulfonic acids such as p-toluenesulfonic acid or Dodecylbenzenesulfonic acid, or other organic or inorganic acids, or mixtures of the aforementioned acids; and catalysts for the reaction of isocyanate groups, for example tin compounds such as stannous octoate, monobutyltin trichloride, dibutyltin dichloride, dibutyltin oxide, dibutyltin diacetate, dibutyltin dilaurate, dibutyltin diacetylacetonate, dibutyltin dicarboxylates, dioctylt
  • Such catalysts can, as before also be mixed as a second component K2 in drop form with the adhesion promoter composition.
  • the catalysts can either be contained directly in the hydrolyzable liquid, in particular the adhesion promoter composition, or mixed with the droplets of the hydrolyzable liquid only shortly before the application of the hydrolyzable liquid, in particular the adhesion promoter composition.
  • fillers and additives can be used.
  • fillers and additives can be used.
  • examples of non-limiting nature are talc, carbon black, organic and inorganic pigments, stabilizers, as well as chemical and physical drying agents.
  • UV absorbers and optical brighteners are also suitable as further constituents.
  • Such optical brighteners absorb UV light and emit visible, usually blue light.
  • a preferred optical brightener is Ciba Uvitex® OB from Ciba Specialty Chemicals.
  • Other suitable brighteners are described, for example, in Kirk-Othmer, "Encyclopedia of Chemical Technology", 4th Ed., John Wiley & Sons, New York, Vol. 11, p.
  • the UV absorbers can be, for example, organic in nature, such as those from the Tinuvin® product line of Ciba Specialty Chemicals, or they can be inorganic in nature, such as color pigments, especially carbon black or titanium dioxide.
  • the substrate, on the surface of which the hydrolyzable liquid is applied by means of an ultrasonic atomizer, can be very different.
  • Non-ferrous metals galvanized metals
  • organic substrates such as wood, chipboards, plastics such as PVC, polycarbonates, PMMA, polyesters, epoxy resins
  • coated substrates such as powder-coated metals or alloys
  • paints and varnishes in particular automotive finishes.
  • the most preferred substrates are glass, especially coated with ceramic Glass, painted surfaces, such as painted metal flanges, and plastics, in particular PVC.
  • the present invention furthermore relates to a method for applying a hydrolyzable liquid, in particular a primer composition, to at least one substrate surface in which an ultrasonic atomizer as described above is used for the application.
  • an ultrasonic atomizer is used, which is part of an application nozzle of a sputtering device, which allows a precise application to a substrate surface and prevents fouling of the wider environment.
  • the sputtering device is preferably designed such that a housing is used for protection against mechanical contact as well as for shielding emerging spurious radiation from the ultrasonic nebulizer.
  • the housing may be expanded to direct the jet of liquid droplets exiting so as to apply the liquid droplets to the desired limited area of the substrate surface.
  • the present invention can be used in particular in the pretreatment of substrate surfaces, which are then to be joined with an adhesive or sealant.
  • a primer substance is preferably applied as a pretreatment by means of the ultrasound atomizer described above. Suitable applications are therefore, for example, the bonding of components in civil engineering and in the manufacture or repair of industrial goods or
  • Means of transport such as vehicles by water or by land, preferably
  • the present invention is particularly suitable for applying an adhesion promoter substance to a pane, preferably made of glass, where the pane is provided with at least one further substrate made of glass,
  • PVC polyvinyl chloride
  • the method according to the invention can preferably be used in vehicle construction, where glass is bonded to a body coated with paint, or in door or window construction, where glass is glued to a frame made of wood or plastic.
  • the invention relates to a method for bonding and / or sealing at least two substrate surfaces S1 and S2 comprising the steps: (i) applying a primer composition by using a previously described ultrasonic atomizer on a substrate S1 and / or a substrate S2; (ii) applying an adhesive or sealant to at least one substrate surface S1 and / or S2 or between the substrates S1 and S2; (iii) contacting the substrates S1 and S2 over the applied adhesive or sealant; and; (iv) curing the applied adhesive or sealant; wherein the substrates S1 and S2 are the same or different from each other.
  • the composition When used as a sealant, the composition is applied between the substrates S1 and S2 and then the curing takes place. Usually, the sealant is pressed into a joint.
  • the application of the adhesive or sealant is preferably uniform.
  • the substrate S1 may be the same as or different from substrate S2.
  • Suitable substrates S1 or S2 are, for example, inorganic substrates such as glass, glass-ceramic, concrete, mortar, brick, brick, gypsum and natural stones such as granite or marble; Metals or alloys such as aluminum, steel, non-ferrous metals, galvanized metals; organic substrates such as wood, plastics such as PVC, polycarbonates, PMMA, polyesters, epoxy resins; coated substrates such as powder-coated metals or alloys; and paints and varnishes, in particular automotive finishes. It has been shown that polyurethane adhesives, (meth) acrylate adhesives, epoxy resin adhesives or adhesives based on alkoxysilane-functional prepolymers are optimally suitable for bonding.
  • one-component moisture-curing adhesives or two-component polyurethane adhesives are suitable polyurethane adhesives.
  • Such adhesives contain polyisocyanates, especially in the form of isocyanate group-containing prepolymers.
  • Polyurethane adhesives such as those sold by Sika Nurse AG under the product lines Sikaflex®, SikaPower® and SikaForce®, are preferred.
  • (Meth) acrylate adhesives are to be understood as meaning two-component adhesives whose first component comprises acrylic acid and / or methacrylic acid and / or their esters, and whose second component comprises a free-radical initiator, in particular a peroxide.
  • Preferred such adhesives are commercially available from Sika Nurse AG under the SikaFast® product line.
  • Epoxy adhesives are adhesives which are formulated on the basis of glycidyl ethers, in particular diglycidyl ethers of bisphenol A and / or bisphenol F. Particularly suitable are two-component epoxy resin adhesives, one component of which contains diglycidyl ethers of bisphenol A and / or bisphenol F and the second component of which contains polyamines and / or polymercaptans. Preference is given to two-component epoxy resin adhesives, such as those commercially available from Sika GmbH under the product line Sikadur®.
  • the two-component epoxy resin adhesives Sikadur®-Combiflex®, Sikadur®-31, Sikadur®-31 DW and Sikadur®-33, preferably Sikadur®-Combiflex®, from Sika Sau AG have proven particularly suitable for bonding films.
  • Adhesives based on alkoxysilane-functional prepolymers are understood in particular to be adhesives based on MS polymers or SPUR (silane-terminated polyurethane) prepolymers.
  • Adhesives based on alkoxysilane-functional prepolymers are moisture-curing and react at room temperature.
  • reactive hot-melt adhesives as sold commercially by Sika für AG under the product line SikaMelt®.
  • preferred are room temperature curing adhesives.
  • the substrates can be applied before applying the adhesive or
  • Sealant be pretreated in addition to applying a primer composition.
  • a primer solution or a primer such pretreatments include in particular physical and / or chemical cleaning processes, for example sanding, sandblasting, brushing or the like, or treatment with cleaners or solvents.
  • a glued or sealed article is obtained.
  • Such an article may be a building, in particular a building of civil engineering, or a means of transport.
  • the article is preferably a means of transport, for example a vehicle by land or water, in particular an automobile, a bus, a truck, a train or a ship, or an attachment thereof.
  • the bonded or sealed article is a means of transport, in particular an automobile, or an attachment of a means of transport, in particular an automobile.
  • the adhesion promoter composition from Table 1 was used.
  • a peristaltic pump of the REGLO Digital type from Ismatec SA, Switzerland, with 12 hose rolls and a hose of 1.09 mm inner diameter was used. After calibrating the pump, it calculates the required number of revolutions for the preselected quantity independently.
  • the adhesion promoter composition was passed into a US 2 ultrasonic atomizer from Lechler GmbH at a constant feed rate of about 0.75 or 0.95 ml / min and atomized at 58 kHz.
  • the outlet opening of the ultrasonic atomizer was constructed at a distance of 6.5 cm from the substrate.
  • the substrate used was a glass ceramic test specimen from Rochol GmbH.
  • An application speed of about 20 cm / s was selected, ie the exit opening of the ultrasonic atomizer moved relative to the glass-ceramic surface at a speed of 20 cm / s.
  • a carrier air flow of approx. 25 l / min was passed through the atomiser.
  • the adhesion promoter composition with an application width of about 2.5 cm could be applied to the substrate.
  • a flash off time of about 15 seconds a dry film thickness of the adhesion promoter composition of 0.08 to 0.14 microns was obtained.
  • the adhesion of the adhesive was tested by means of a 'bead test'.
  • the caterpillar is cut at the end just above the adhesive surface.
  • the cut end of the caterpillar is held with a round tongs and pulled from the ground. This is done by carefully rolling up the bead on the pliers tip, as well as placing a cut perpendicular to the track pulling direction down to the bare ground.
  • the caterpillar pull-off speed should be selected so that a cut must be made approx. Every 3 seconds.
  • the test track must be at least 8 cm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Sealing Material Composition (AREA)
  • Paints Or Removers (AREA)

Abstract

La présente invention concerne l'utilisation d'un pulvérisateur à ultrasons pour appliquer une composition d'adhésif sur au moins une surface de substrat ainsi qu'un procédé de collage ou de jointage d'au moins deux substrats, une composition d'adhésif étant au moins appliquée sur au moins un substrat au moyen d'un pulvérisateur à ultrasons avant le collage ou le jointage.
EP07729198A 2006-05-16 2007-05-16 Procédé d'application d'une composition d'adhésif avec un pulvérisateur à ultrasons Withdrawn EP2019734A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07729198A EP2019734A1 (fr) 2006-05-16 2007-05-16 Procédé d'application d'une composition d'adhésif avec un pulvérisateur à ultrasons

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP20060114042 EP1857188A1 (fr) 2006-05-16 2006-05-16 Procédé d'application d'un primer à l'aide d'un atomiseur à ultrasons
EP07729198A EP2019734A1 (fr) 2006-05-16 2007-05-16 Procédé d'application d'une composition d'adhésif avec un pulvérisateur à ultrasons
PCT/EP2007/054750 WO2007132013A1 (fr) 2006-05-16 2007-05-16 Procédé d'application d'une composition d'adhésif avec un pulvérisateur à ultrasons

Publications (1)

Publication Number Publication Date
EP2019734A1 true EP2019734A1 (fr) 2009-02-04

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EP20060114042 Withdrawn EP1857188A1 (fr) 2006-05-16 2006-05-16 Procédé d'application d'un primer à l'aide d'un atomiseur à ultrasons
EP07729198A Withdrawn EP2019734A1 (fr) 2006-05-16 2007-05-16 Procédé d'application d'une composition d'adhésif avec un pulvérisateur à ultrasons

Family Applications Before (1)

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EP20060114042 Withdrawn EP1857188A1 (fr) 2006-05-16 2006-05-16 Procédé d'application d'un primer à l'aide d'un atomiseur à ultrasons

Country Status (4)

Country Link
US (1) US20090068477A1 (fr)
EP (2) EP1857188A1 (fr)
JP (1) JP2009537303A (fr)
WO (1) WO2007132013A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2110420B1 (fr) * 2008-04-11 2010-09-22 Sika Technology AG Procédé d'application d'une composition d'agent adhésif sur un substrat
DE102010013196B4 (de) 2010-03-29 2015-10-29 Hilti Aktiengesellschaft Chemische Zweikomponenten-Mörtelmasse mit verbesserter Haftung an der Oberfläche von halbgereinigten und/oder feuchten Bohrlöchern in mineralischem Untergrund und ihre Verwendung
DE102010013198A1 (de) 2010-03-29 2011-09-29 Hilti Aktiengesellschaft Chemische Zweikomponenten-Mörtelmasse mit verbesserter Haftung an der Oberfläche von feuchten Bohrlöchern in mineralischem Untergrund und ihre Verwendung
DE102010013197A1 (de) 2010-03-29 2011-09-29 Hilti Aktiengesellschaft Verfahren zur Verbesserung der Haftung von chemischen Zweikomponenten-Mörtelmassen an der Oberfläche von feuchten Bohrlöchern in mineralischem Untergrund und die Lösung zur Durchführung des Verfahrens
EP2377746A1 (fr) * 2010-04-15 2011-10-19 LANXESS Deutschland GmbH Module de traverse pour un véhicule automobile
FR3032363B1 (fr) * 2015-02-05 2017-01-27 Saint Gobain Procede d'encapsulation de vitrages en polycarbonate pourvus d'un revetement anti-rayures
US10597559B2 (en) 2016-06-06 2020-03-24 Crane Composites, Inc. Method of manufacturing a composite panel containing lauan or other moisture-carrying or moisture-absorbing material using adhesion promoter and panel made using the method
DE102021105859A1 (de) 2021-03-10 2022-09-15 Klever Beschichtungstechnik GmbH & Co. KG Kunststoffteil, Beschichtungsanlage und Verfahren zur Beschichtung

Citations (1)

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WO2006124437A1 (fr) * 2005-05-12 2006-11-23 Dow Corning Ireland Limited Liaison d'un adhesif a un substrat au moyen d'une couche primaire

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Publication number Priority date Publication date Assignee Title
SE323219B (fr) * 1965-07-15 1970-04-27 Dow Corning
DE3414245A1 (de) * 1984-04-14 1985-10-17 Battelle-Institut E.V., 6000 Frankfurt Verfahren und vorrichtung zur dichten belegung von festkoerperoberflaechen mit feinen fluessigkeitstroepfchen
DE3732325A1 (de) * 1987-09-25 1989-04-13 Battelle Institut E V Vorrichtung zum zerstaeuben eines fluessigen mediums mit hilfe von ultraschall
US5409163A (en) * 1990-01-25 1995-04-25 Ultrasonic Systems, Inc. Ultrasonic spray coating system with enhanced spray control
US6440669B1 (en) * 1999-11-10 2002-08-27 Agilent Technologies, Inc. Methods for applying small volumes of reagents

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
WO2006124437A1 (fr) * 2005-05-12 2006-11-23 Dow Corning Ireland Limited Liaison d'un adhesif a un substrat au moyen d'une couche primaire

Also Published As

Publication number Publication date
EP1857188A1 (fr) 2007-11-21
JP2009537303A (ja) 2009-10-29
WO2007132013A1 (fr) 2007-11-22
US20090068477A1 (en) 2009-03-12

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