EP2918348A1 - Article en mousse pour nettoyage et prétraitement de substrats à coller - Google Patents

Article en mousse pour nettoyage et prétraitement de substrats à coller Download PDF

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Publication number
EP2918348A1
EP2918348A1 EP14159294.9A EP14159294A EP2918348A1 EP 2918348 A1 EP2918348 A1 EP 2918348A1 EP 14159294 A EP14159294 A EP 14159294A EP 2918348 A1 EP2918348 A1 EP 2918348A1
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EP
European Patent Office
Prior art keywords
application
foam body
storage area
substrate surface
area
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.)
Ceased
Application number
EP14159294.9A
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German (de)
English (en)
Inventor
Erfindernennung liegt noch nicht vor Die
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
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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 EP14159294.9A priority Critical patent/EP2918348A1/fr
Publication of EP2918348A1 publication Critical patent/EP2918348A1/fr
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/002—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces with feed system for supplying material from an external source; Supply controls therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/10—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed before the application

Definitions

  • the invention relates to a product and a method for cleaning and pretreatment of substrate surfaces prior to bonding.
  • substrates are usually cleaned prior to bonding and are often treated with a pretreatment agent such as a primer, primer or activator. Through this procedure, the quality of the bond can be improved overall.
  • a pretreatment agent such as a primer, primer or activator.
  • the object of the present invention is therefore to minimize the possible sources of error in the process for cleaning and pretreatment of substrate surfaces, in particular vehicle glazing, and to provide as far as possible a product with which both steps can be carried out.
  • the foam body is, in particular, a foam body which is not abrasive to glass and glass ceramic.
  • the foam body is preferably a melamine foam body.
  • melamine or “melamine foam” in the present invention is a melamine-formaldehyde foam meant.
  • Melamine foams are known in the art.
  • the use of a melamine foam body has the advantage that the cleaning of the substrate surface is both wet, i. can be done using a detergent for the substrate surface, as well as dry.
  • the foam body has at least one outgoing from its surface recess.
  • This recess can already be in the production of the foam body, for example by using a placeholder in the foaming process, attached or it is subsequently, for example by cutting, milling, drilling or baking, attached.
  • the recess is attached to the finished foam.
  • the recess is a groove or a bore.
  • the product according to the invention comprises an application device connected to the at least one foam body in a form-fitting or materially bonded manner.
  • the application device may be fastened to a part of the application device by a clamping mechanism of the foam body, for example in that the recess is formed as a groove, which together with a component of the application device, which may be formed as a spring, in a tongue and groove Connection are interconnected.
  • the foam body preferably has a cohesively connected application device.
  • the foam body is glued to the application device. This is done in particular by means of hotmelt adhesive or superglue.
  • the application device has at least one storage area and at least one application area.
  • the storage area contains an enclosed, if necessary releasable, liquid pretreatment agent.
  • the release of the pretreatment agent is typically carried out by mechanical actuation.
  • the storage area contains a container in which the pretreatment agent is contained.
  • a container may consist of a plastic and be, for example, a plastic ampoule or a foil bag.
  • the container is a glass ampule.
  • combinations of various materials such as an open plastic or glass ampoule with a closure made of another material, typically a plastic or a metal foil, in particular aluminum, or combinations thereof, such as are familiar as blister packs in pharmaceutical products.
  • Possible containers are also metallic foil bags, typically made of optionally coated aluminum.
  • the pretreatment agent can be released from the storage area, in particular without the use of tools or aids. Preference is therefore given to the use of a container in the storage area, which can be opened by squeezing or buckling of at least a portion of the storage area.
  • the container is destructible by external force, so that the pretreatment agent can leak.
  • the storage area comprises at least one glass ampule containing the pretreatment agent. Glass has the advantage that it is impermeable to humidity.
  • the reservoir consists of a polyolefin such as polyethylene (PE) or polypropylene (PP) or polyethylene terephthalate (PET), in particular of amorphous PET. PET is preferred because of its good resistance to chemicals.
  • PE polyethylene
  • PP polypropylene
  • PET polyethylene terephthalate
  • the layer thickness or the wall thickness of the storage container is in particular 500 to 1500 .mu.m, preferably 700 to 900 .mu.m.
  • the storage area is at least partially in the recess in the foam body. The user can thus break the ampoule by force through the foam body and is thus protected by the foam body in addition from injury from escaping shards.
  • This arrangement also has the further advantage that the foam body protects the container, in particular if it is a glass ampoule, from unintentional opening and thus undesired release of the pretreatment agent.
  • the container is optimally protected for transport and handling before use.
  • the application region of the application device has at least one application surface, via which the pretreatment agent can be applied to the substrate surface.
  • this application surface is at least partially in contact with the substrate surface and is moved over to apply the pretreatment agent.
  • the application surface consists mainly of a material which is suitable for the application of a liquid to a substrate.
  • This is typically a textile material, in particular a felt or a fleece, or a foam.
  • the application surface is designed so that it is permeable to the pretreatment agent and can be wetted from its rear side. This is achieved in particular by using a porous material as the material for the application surface or by then providing a non-porous material with passages for the pretreatment agent.
  • the material is preferably porous textile material, preferably a felt or a fleece, which can be impregnated with the pretreatment agent from its rear side.
  • the storage area and the application area are connected to one another via a passage, so that the pretreatment agent can reach the application area after it has been released in the storage area.
  • the storage area lies directly adjacent to the application area.
  • the side of the application area facing away from the application area that is, preferably, preferably forms. So the back of the application area, a limiting wall of the storage area.
  • This embodiment is particularly preferred in the case where the material is a porous textile material that can be soaked with the pretreatment agent from its backside.
  • the pretreatment agent can reach the application area immediately after its release.
  • the foam body substantially (i.e., not taking into account variations due to manufacturing and processing) has the shape of a cuboid.
  • the recess is preferably formed in the form of a groove.
  • This groove preferably runs centrally along a surface of the cuboid and usually extends preferably over the entire length of a surface of the cuboid.
  • This arrangement has great advantages in connection with the production process of the foam body. So foam bodies are typically prepared in large blocks or plates and then cut into the desired shape. For the production of foam bodies for this preferred embodiment of the invention, the groove can thus be applied in smaller units before the blank of the larger foam body.
  • the storage area in particular in the form of a spring, which is received by the groove over at least part of its length or over its entire length in a kind of tongue and groove connection.
  • the storage area is optimally protected by the foam body.
  • the tongue and groove connection helps to apply the application device to the foam body, as it causes some mechanical fixation.
  • the application device is preferably also additionally glued to the foam body. Even with the bonding, however, the provisional fixation by the tongue and groove connection is useful.
  • the recess in the form of a groove extends on average not deeper than half the mean thickness of the foam body in this.
  • the storage area, which is located in particular in the groove is optimally protected against external unwanted force.
  • the foam body thereby still has a sufficient thickness or strength, so that a thorough cleaning of the substrate surface is possible. It should be noted that even when cleaning the substrate surface with the foam body pressure is applied to this. If the layer thickness of the foam body is too small, this pressure could lead to the unwanted release of the pretreatment agent.
  • the foam body has the shape of a four-sided straight prism.
  • the cross-sectional area of this prism preferably corresponds to an isosceles, that is symmetrical, trapezoid.
  • the recess is in the form of a groove on the smaller area of the four-sided straight prism.
  • the foam body has substantially the shape of a cuboid and the recess in the form of a bore which, in particular from the center of a surface of the cuboid, extends into the cuboid.
  • a sufficient layer thickness of the foam body of importance so that the recess in the form of a bore is here designed so that at an angle of 90 °, starting from the drilling axis, the foam body has a thickness which at least corresponds to the diameter of the bore ,
  • the bore is mounted in the middle of a cuboid surface, so that the foam body around the bore has a sufficient layer thickness.
  • the application area is preferably multi-layered.
  • the application area in particular has a base layer on which the application area is arranged.
  • This layer consists essentially of a material, in particular a plastic, which has a higher stiffness compared to the foam body.
  • the application surface, in particular made of felt or fleece, is in particular over the full surface, attached to this support layer, in particular glued along its edge.
  • the application region preferably covers at least that entire surface of the cuboid which has the recess or from which the recess originates.
  • both the optionally present support layer and the application surface resting thereon extend over the entire surface of the cuboid with the recess.
  • the application area comprising the support layer and the application area is located on the smaller of the two rectangular areas of the prism.
  • the application area projects beyond this smaller area of the prism laterally, ie transversely to the groove, and possibly also in the longitudinal direction.
  • the area of the application area preferably corresponds to the larger of the two areas of the prism, wherein the application area equally projects beyond the smaller area of the prism on both sides.
  • the application area projects beyond the surface of the foam body to which it is attached, also in the longitudinal direction, ie, the entire surface of the prism to which the application area is attached, preferably by approximately the same length as it protrudes laterally.
  • the application region can have one or more retention elements which can possibly stop cleaning agent emerging during the pretreatment of the substrate surface.
  • This retaining element may be integrally formed with the support layer or have been attached nightly.
  • this embodiment has the advantage that the foam body has a smaller thickness in the region of the storage area and the storage area can thereby be compressed more easily in order to release the pretreatment agent.
  • this form has the advantage that a cleaning agent, which was optionally used for cleaning the substrate surface and is still present in the foam body, by compressing the foam body during cleaning or during the release of the pretreatment agent or during its application, not so easy on the Application surface passes and this dirty or otherwise impaired.
  • the storage area and support layer are preferably formed in one piece, in particular in a manner such as result from a deep-drawing process of an inner region of a rectangular plastic plate.
  • This planar edge typically extends around the entire tub and has approximately a width on, which corresponds to one third of the width of the rectangular plastic plate. Accordingly, the width of the tub is also about one third of the width of the rectangular plastic plate.
  • the support layer may be provided opposite the application surface with notches, grooves or the like, which allow a facilitated flow of the pretreatment agent from the passage into the outer regions of the application surface.
  • This protective film can be made of plastic or of metal, for example aluminum, and is removed after the cleaning and in particular after the release of the pretreatment agent.
  • a protective film makes sense especially when cleaning is used using a cleaning agent for the substrate surface.
  • the foam body can be soaked with cleaning agent, which then emerge from the foam body during the release of the pretreatment agent, in particular when this is done by pressure on the storage area, and can soil the cleaned substrate surface or the application area of the product according to the invention.
  • a substrate surface can also be used without, i. dry, or cleaned with little detergent, so that the risk of subsequent contamination of the substrate surface or contamination of the application surface with detergent is low.
  • the pretreatment agent may be any pretreatment agent that is selected depending on the substrate to be bonded. Typically, this is an adhesion promoter, a primer or an activator, which is used to activate the substrate surface.
  • Particularly suitable activators contain at least one adhesion promoter, which is preferably selected from the group comprising organotitanates, aminosilanes, mercaptosilanes, hydroxysilanes and mixtures thereof.
  • Organotitanates useful in the present invention are, in particular, alkoxy titanates, e.g. Titanium tetrabutoxide, or sulfoxy titanates, such as the tris (dodecylbenzenesulfonato-O) (propan-2-olato) titanium.
  • silane refers to organoalkoxysilanes in which, on the one hand, two or three alkoxy groups are bonded directly to the silicon atom via an Si-O bond and, on the other hand, directly via one or two Si-C bond, bonded to the silicon atom-bonded organic radical, which represents a functional group or carries one.
  • the silanes have the property of hydrolyzing on contact with moisture. This forms organosilanols and, by subsequent condensation reactions, organosiloxanes.
  • the activator is preferably free of polyisocyanates. It is furthermore preferred if the activator comprises from 90 to 99% by weight of chemically inert solvent. Such solvents are preferably hydrocarbons or water. The remainder of the activator is preferably formed by one or more adhesion promoters which are present in the activator at from 1 to 10% by weight, preferably from 3 to 8% by weight.
  • Suitable activators preferably contain one or more aminosilanes without additional mercaptosilane and are described, for example, in US Pat EP1760128A1 ,
  • activators comprise a mixture of at least one aminosilane, in particular an aminosilane which contains a tertiary amino group, and at least one mercaptosilane.
  • activators are for example in the EP1923361A1 described.
  • the activator is based essentially on water as the solvent. It is further preferred if the means for activating the cleaned substrate surface contains bis (trimethoxysilylpropyl) amine and mercaptopropyltrimethoxysilane as constituents. Such activators are used for example in the EP1894966A1 describe.
  • the aminosilanes and optionally mercaptosilanes are dissolved in an organic solvent, in particular in a hydrocarbon or in a mixture of hydrocarbons.
  • Suitable activators are available, for example, under the trade name Sika® Activator or Sika® Activator PRO from Sika.
  • nonpolar organic solvents, especially hydrocarbons have the disadvantage that the surface tension test is usually carried out with a polar solvent such as water. Therefore, the nonpolar organic solvent must be removed from the surface of the substrate prior to testing the surface tension, otherwise it may falsify the measurement of surface tension. Therefore, activators based on non-polar solvents are less preferred in the context of the present invention.
  • Suitable organotitanate-containing activators are available, for example, under the trade name Sika® activator-205 from Sika.
  • Suitable activators include hydroxysilanes. Preferred hydroxysilanes are described, for example, in EP1502927A1 as compounds A1.
  • the pretreatment agent may also function as a test ink by which it can be determined whether the contaminant has been effectively removed from the substrate surface. This is especially the case when the pollution is silicone contamination. at In such contaminated substrates, the surface tension is so low that effective wetting of the substrate surface with the pretreatment agent is virtually impossible. Consequently, from the good wetting of the substrate surface with the pretreatment agent, it can be concluded that the highly adhesion-critical silicone contamination has been effectively removed, so that the bonding of the substrate can be performed.
  • the substrate surface which is cleaned by means of the product according to the invention and pretreated for the bonding, is in particular a glass or a glass ceramic surface, typically a vehicle glazing, in particular a glass component of automobiles, buses, trucks, trains, ships or aircraft. It is preferably a glazing of an automobile, in particular a windshield.
  • the invention is not limited to certain substrate surfaces, it may for example be used for cleaning and pretreatment of other surfaces, especially metals, paints, preferably automotive topcoat, plastics and the like, for example, molded on a vehicle glazing components made of polyurethane, polyvinyl chloride or for pre-applied adhesives.
  • the adhesive with which the substrate is bonded at the location where the substrate surface has been cleaned and pretreated is, in particular, a moisture-curing adhesive based on isocyanate-functional polyurethanes, for example available under the trade names SikaTack® or Sikaflex® from Sika ,
  • silane-functional polymers in particular of silane-terminated polyurethanes, silane-terminated polyethers or silane-terminated polyolefins.
  • the adhesive may also be a hot or hot melt adhesive, in particular a reactive hot or hot melt adhesive based on isocyanate-functional polyurethanes.
  • the adhesive may be one-component or multi-component.
  • the adhesive is an adhesive based on isocyanate-functional polyurethanes, which at ambient temperature (5 to 50 ° C) can be applied and can cure at ambient temperature. Depending on the curing speed requirements of the adhesive, it can be mixed during application with a component which accelerates the curing of the adhesive.
  • water-containing pastes are typically used for moisture-curing adhesives, especially based on isocyanate-functional polyurethanes. These are typically added to the adhesive in a weight ratio of 1:10 to 1: 200, in particular 1:20 to 1: 100, preferably 1:40 to 1:70.
  • fast-curing adhesive systems in particular more boosted polyurethanes
  • fast-curing adhesive systems in particular more boosted polyurethanes
  • the present invention relates to the use of a product according to the above description for the purification and pretreatment of a substrate surface prior to its bonding.
  • the product according to the invention is suitable for the cleaning and pretreatment of a vehicle glazing, preferably a windshield of an automobile, before its bonding.
  • the step of cleaning can be done dry or using a liquid detergent for the substrate surface.
  • Non-static glass cleaners such as Sika® CleanGlass available from Sika, are particularly suitable as cleaning agents.
  • FIG. 1 shows a product according to the invention comprising a foam body 1, which has the shape of a cuboid and which has a recess 2 in the form of a groove 2a, which extends centrally and over the entire length of a surface of the cuboid. Furthermore, the product has an application device 3 with a storage area 4, which is received completely in the groove 2, and an application area 5, comprising a support layer 6 and an application area 7 arranged thereon.
  • FIG. 1 has an approximately square cross-sectional area.
  • the length of the product is about twice the edge length of the cross-sectional area. Possible side lengths of the cross-sectional area are approximately in the range of 2 to 4 cm, the length of the product may be in the range of 4 to 10 cm.
  • the product can basically be designed freely, wherein it makes sense to adapt the size of the foam body to the substrate surface to be cleaned. Likewise, the size of the storage area and the amount of pretreatment agent contained therein as well as the size of the application area may depend on the area to be pretreated.
  • FIG. 2 shows a cross section through the product according to the invention FIG. 1 , in which case again the foam body 1 with the recess 2 in the form of a groove 2a, as well as the storage area 4 of the application device 3 located in the groove and its support layer 6 and the application area 7 can be seen. Additionally shown are the glass ampoule 8, which contains the pretreatment agent 9, as well as the passage 10 from the storage area 4 to the application area 5.
  • the glass ampoule 8 After cleaning the substrate surface with the foam body 1, in particular with the application surface 7 facing away from the surface of the foam body 1, the glass ampoule 8 is crushed by squeezing or buckling of the storage area 4, resulting in the exit of the pretreatment means 9 from the glass ampoule 8.
  • the pretreatment agent 9 in this case runs through the passage 10, ie from the back, into the application area 7.
  • the release of the pretreatment agent can take place before or after the positioning of the product according to the invention with the application area on the substrate surface.
  • FIG. 3 shows a longitudinal section through the in FIG. 1 shown product according to the invention, wherein here a preferred form of the glass ampoule 8 is shown.
  • the glass ampoule is a tubular glass ampoule, wherein the size of the glass ampoule or the container is generally adapted to the amount of the pretreatment agent which is needed for the particular application and is dependent on the size of the substrate surface to be pretreated.
  • FIGS. 4 to 7 show different embodiments of the present invention, wherein the features and the mode of operation, those in the FIGS. 1 to 3 correspond to described embodiment.
  • FIGS. 8 and 9 show an embodiment of the product according to the invention, in which the recess 2 has the shape of a bore 2b.
  • the bore is located in the middle of an approximately square surface of the cuboid foam body 1.
  • the storage area 4 preferably has a cylindrical shape. The remaining features of these embodiments are substantially the same as those described above.
  • FIGS. 10 to 12 show different embodiments of the present invention, wherein the features and the operation, those in the FIGS. 8 and 9 correspond to described embodiments.
  • FIG. 13 shows the application device 3 of the inventive product without the foam body.
  • the application device comprises a storage container 4 and a carrier layer integrally formed with the storage container 6, on which the application surface 7 is arranged.
  • Base layer 6 and application surface 7 together form the application area.
  • FIG. 14 shows a product according to the invention, in which the foam body 1 has the shape of a four-sided straight prism.
  • the cross-sectional area of this prism corresponds to an isosceles, that is symmetrical, trapezoid.
  • the recess 2 in the form of a groove 2a is located on the smaller area of the quadrilateral straight prism.
  • the application area 5 consisting of base layer 6 and application surface 7 extends over the surface of the prism on which it rests. In particular, it has substantially the same base area as the larger area of the prism and protrudes uniformly beyond the smaller area of the prism. Preferably, the application area 5 protrudes on all sides of the smaller area of the prism.
  • This embodiment has the advantage that the application surface is not contaminated with optionally used cleaning agent when cleaning the substrate surface, in particular with the side of the foam body facing away from the application surface, or during the subsequent application of the pretreatment agent. Any cleaning agent emerging from the foam body during the pretreatment of the substrate surface is retained by the projections of the application area.
  • FIG. 15 shows a product according to the invention, which for the most part that FIG. 14 equivalent.
  • the retaining element 11 may extend around the entire circumference of the product or the application surface or only over parts thereof.
  • the retaining element may be formed both integrally with the support layer and in particular also with the storage area 4, or be arranged as a separate component on the back of the support layer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
EP14159294.9A 2014-03-12 2014-03-12 Article en mousse pour nettoyage et prétraitement de substrats à coller Ceased EP2918348A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14159294.9A EP2918348A1 (fr) 2014-03-12 2014-03-12 Article en mousse pour nettoyage et prétraitement de substrats à coller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14159294.9A EP2918348A1 (fr) 2014-03-12 2014-03-12 Article en mousse pour nettoyage et prétraitement de substrats à coller

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EP2918348A1 true EP2918348A1 (fr) 2015-09-16

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768916A (en) * 1971-12-01 1973-10-30 Medical Supply Co Sponge with encapsulated liquid
WO1998011852A1 (fr) * 1996-09-18 1998-03-26 The Boots Company Plc Distributeur de fluides
WO2001076972A1 (fr) * 2000-04-05 2001-10-18 Sanford Redmond Inc. Sachet a liquide a ouverture facile pourvu d'un applicateur
EP1502927A1 (fr) 2003-07-31 2005-02-02 Sika Technology AG Composition pour couche primaire, exempte d'isocyanate, pour verre et vitrocéramiques
EP1760128A1 (fr) 2005-09-02 2007-03-07 Sika Technology AG Composition de organo-alkoxysilanes à deux composants
EP1894966A1 (fr) 2006-08-31 2008-03-05 Sika Technology AG Composition promotrice d'adhérence comprenant de l'aminosilane et du mercaptosilane
EP1923361A1 (fr) 2006-11-20 2008-05-21 Sika Technology AG Composition couche d'apprêt adhésive à basse température

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768916A (en) * 1971-12-01 1973-10-30 Medical Supply Co Sponge with encapsulated liquid
WO1998011852A1 (fr) * 1996-09-18 1998-03-26 The Boots Company Plc Distributeur de fluides
WO2001076972A1 (fr) * 2000-04-05 2001-10-18 Sanford Redmond Inc. Sachet a liquide a ouverture facile pourvu d'un applicateur
EP1502927A1 (fr) 2003-07-31 2005-02-02 Sika Technology AG Composition pour couche primaire, exempte d'isocyanate, pour verre et vitrocéramiques
EP1760128A1 (fr) 2005-09-02 2007-03-07 Sika Technology AG Composition de organo-alkoxysilanes à deux composants
EP1894966A1 (fr) 2006-08-31 2008-03-05 Sika Technology AG Composition promotrice d'adhérence comprenant de l'aminosilane et du mercaptosilane
EP1923361A1 (fr) 2006-11-20 2008-05-21 Sika Technology AG Composition couche d'apprêt adhésive à basse température

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