BE1027545B1 - ADHESIVE AND APPLICATOR FOR APPLYING THIS ADHESIVE - Google Patents

Abstract

A first aspect of the present invention relates to an adhesive comprising one or more silane-modified polymers and one or more plasticizers, wherein the ratio between said silane-modified polymers and said plasticizers is comprised between 1: 2 and 2: 1. A second aspect relates to an applicator suitable for applying an adhesive, comprising a nozzle, which nozzle comprises an inlet and at least a first and a second distribution channel, which inlet, first and second distribution channel are located in the same plane with their longitudinal directions, and wherein the first and second distribution channels are symmetrically coupled on either side of said inlet, and each of the distribution channels discharge into a separate outlet, and wherein the respective path length from the inlet to the respective individual outlets is substantially the same for each of said distribution channels. A third and fourth aspect concern a kit and a method for applying an adhesive, respectively.

Description

t BE2019 / 5578

ADHESIVE AND APPLICATOR FOR APPLYING THIS ADHESIVE

TECHNICAL FIELD The invention relates to adhesive compositions. More specifically, the invention is in the technical field of silane-modified polymer adhesives.

BACKGROUND ART Silane modified polymers are used in the art for a variety of bonding applications. However, currently known adhesives based on silane-modified polymers have the disadvantage that their optimal performance is substrate-bound, so that they often additionally require the use of a primer, and that they are generally only slightly pumpable, which is a problem especially when bonding larger surfaces. forms. Moreover, silane-modified polymers already harden under the influence of atmospheric moisture, so that they are only slightly workable after application. These various drawbacks mean that the bonding by means of silane-modified polymers is very time-bound, i.e. the application of a primer and the adhesive itself takes a lot of time, after which the time frame within which operations can remain possible is quite small. For example, US 6 828 403 describes an adhesive composition comprising a silane-modified polymer, specifically designed for bonding glass to a substrate. Use is made of a specific primer, which must be applied beforehand to guarantee good adhesion. EP 2 726 524 describes an adhesive composition based on silane modified polymers. However, the composition is only slightly pumpable, so that its application is labor and time intensive. Accordingly, there is a need for an adhesive composition based on silane-modified polymers that is sufficiently pumpable for rapid and efficient application, and exhibits good adhesion to a variety of substrates, without requiring or requiring prior application of a primer. without reducing the machinability after application.

? BE2019 / 5578 The present invention aims at at least solving some of the above-mentioned problems or drawbacks.

SUMMARY OF THE INVENTION To this end, the present invention provides an adhesive according to claim 1, comprising one or more silane-modified polymers and one or more plasticizers, wherein the ratio between said silane-modified polymers and said plasticizers is comprised between 1: 2 and 2: 1.

The adhesive of the present invention exhibits particularly good adhesion to a wide variety of materials, even without the use of a primer. The adhesive also shows good resistance to natural weathering, such as rain and UV, and shows no cracks after UV exposure, optimally retaining its elasticity. Within the respective ratio between 1: 2 and 2: 1, the plasticizers furthermore modify the rheological properties of the adhesive so that a desired consistency is obtained for the bulk application of the adhesive by means of a suitable applicator. Preferred forms of the adhesive are set forth in the dependent claims 2-7. A second aspect of the present invention relates to an applicator, suitable for applying an adhesive, comprising a nozzle, which nozzle inlet and at least a first and a second distribution channel. which inlet, first and second distribution channel are located in the same plane with their longitudinal directions, and wherein the first and second distribution channel are symmetrically coupled on either side of said inlet, and wherein each of the distribution channels terminate in a separate outlet, the respective path length starting from the inlet to the respective individual outlets, is substantially the same for each of said distribution channels. The applicator according to the present invention allows an adhesive to be applied easily and quickly, whereby several, evenly distributed adhesive beads are formed. Due to the design of the nozzle, the flow at the outlets starts and stops simultaneously and the flow rate passed during application is the same for all outlets. The even distribution of the adhesive strips then allows them to be easily processed, eg spreading, after which the material to be glued can be applied. A third and fourth aspect of the invention relate to a kit, and a method for applying an adhesive, respectively according to claims 8-14 and

15.

FIGURES Fig. 1a shows the front view of a preferred form of nozzle with 6 distribution channels according to the present invention. FIG. 1b shows the front view of a preferred form of nozzle with 4 distribution channels according to the present invention. FIG. 2 shows the perspective view of the nozzle according to the present invention in use. FIG. 3 shows the perspective view of a preferred form of an applicator according to the present invention. FIG. 4 shows the perspective view of an applicator according to the present invention in use.

FIG. 5 shows the transverse view of a connector according to the present invention. FIG. 6 shows the front view of a glue sausage for use in an applicator according to the present invention.

DETAILED DESCRIPTION The present invention relates in a first aspect to an adhesive comprising one or more silane modified polymers. Unless defined otherwise, all terms used in the description of the invention, including technical and scientific terms, have the meaning as commonly understood by those skilled in the art of the invention. For a better assessment of the description of the invention, the following terms are explicitly explained.

“A”, “the” and “the” in this document refer to both the singular and the plural unless the context clearly suggests otherwise. For example, "a segment" means one or more than one segment.

When “about” or “around” is used in this document for a measurable quantity, parameter, time duration or moment, and the like, it means variations of +/- 20% or less, preferably +/- 10% or less, more preferably +/- 5% or less, even more preferably +/- 1% or less, and even more preferably +/- 0.1% or less than and of the quoted value, to the extent that such variations of are applicable in the described invention. However, this should be understood to mean that the value of the quantity using the term “approximately” or “round” is itself specifically disclosed. The terms “comprise”, “comprising”, “consist of”, “consisting of”, “incorporating”, “containing”, “containing”, “containing”, “containing” are synonyms and are inclusive or open terms that denote the indicate the presence of what follows, and which do not exclude or prevent the presence of other components, features, elements, members, steps known from or described in the prior art. Quoting numeric intervals through the endpoints includes all integers, fractions, and / or real numbers between the endpoints, including these endpoints. A first aspect of the present invention relates to an adhesive comprising one or more silane-modified polymers and one or more plasticizers, wherein the ratio between said silane-modified polymers and said plasticizers is comprised between 1: 2 and 2: 1. The term "adhesive" in the context of the present invention is understood to mean a glue or adhesive. More generally, adhesives are adjuvants which allow two or more objects, parts, components and / or materials to be attached, preferably permanently, to each other. A “polymer” is an organic compound consisting of a sequence of identical or similar parts, also called monomers, which are chemically bound together.

> BE2019 / 5578 are linked. Polymers may consist of different monomers and thus form more complex compounds, such as copolymers, block copolymers or terpolymers.

The term "silane modified polymers" (SMPs), also referred to as "silane-terminated polymers", refers to a specific class of polymers in which the polymer chains have a silyl group as an end group.

The term "plasticizer" refers to additives that increase the plasticity or decrease the viscosity of a material. They are added to modify physical and / or rheological properties of a material and are effective in reducing the attractive forces between polymer chains. Plasticizers should preferably be free of water, inert to reactive groups and compatible with the polymer used in the adhesive.

The adhesive of the present invention exhibits particularly good adhesion to a wide variety of materials, even without the use of a primer. Examples of suitable materials include, but are not limited to PVC, aluminum, glass, steel, ceramic, plywood, or EPDM. The adhesive also shows good resistance to natural weathering, such as rain and UV, and shows no cracks after UV exposure, optimally retaining its elasticity. Within the respective ratio between 1: 2 and 2: 1, the plasticizers furthermore modify the rheological properties of the adhesive so that a desired consistency is obtained for the bulk application of the adhesive by means of a suitable applicator. The adhesive can be pumped and / or extruded with a low force and at low temperatures, which entails great ease of use and high efficiency. The adhesive does not drip, making it easy and clean to apply to a substrate. This effect is further referred to by the term “drip resistance”. In addition, the adhesive cures sufficiently slowly so that the adhesive can be applied to large areas and / or a multitude of surfaces with sufficient time available for further processing, e.g., spreading or smearing, of the adhesive applied and a second substrate to be adhered to. These effects are further referred to by the term “editability”.

Preferably, the ratio between said silane-modified polymers and the plasticizers is comprised between 11:20 and 19:10. A narrower range of said ratio provides an improved balance between drip resistance on the one hand and machinability on the other, further improving the efficiency and accuracy of large area application of the adhesive. More preferably, the ratio between said silane-modified polymers and the plasticizers is comprised between 12:20 and 18:10, even more preferably between 13:20 and 17:10, between 14:20 and 17:10, between 15: 20 and 17:10, between 16:20 and 17:10, or 17:20 and 17:10. Most preferably, the ratio between said silane-modified polymers and the plasticizers is comprised between 20:20 and 16:10.

In one embodiment, the adhesive of the present invention is additionally solvent-free and / or cyanate-free. The term "solvent" or solvent, in this context, denotes any substance in which other substances can be dissolved. Solvents are generally liquids, suitable for dissolving solids and distributing them homogeneously in a liquid composition. However, the use of solvents has the disadvantage of solvent emission problems: given their chemical nature, evaporation of volatile organic compounds (VOCs) is an inherent and negative property of solvent-borne products.

In a further or different embodiment, the silane-modified polymers comprise a difunctional or trifunctional silane-modified polymer. The terms "difunctional" and "tri-functional" here indicate, respectively, that the polymer comprises two or three functional groups per monomer unit, and is a measure of the cross-linking of the polymer to be effected. Di- or tri-functionality of the polymer allows use of the adhesive on a variety of surfaces, thereby achieving good cross-linking, and thus fixation. In some embodiments, the di- or trifunctional silane-modified polymer is a dimethoxysilyl polyether or trimethoxysilyl polyether. Preferably, the silane-modified polymers comprise a difunctional silane-modified polymer. More preferably, the difunctional silane-modified polymer is dimethoxymethylsilane.

The plasticizers are selected in a further or different embodiment from the group consisting of polyether polyols, polyester polyols, di-isobutyl phthalate, di-isononyl phthalate, di-isononyl-1,2-cyclohexane dicarboxylate, diethylhexyl phthalate, benzyl butyl phthalate, di-n-butyl phthalate, di-n-butyl phthalate, isodecyl phthalate, dioctyl phthalate, or combinations thereof. Plasticizers from this group are extremely suitable for softening silane-modified polymers, the adhesive being extremely easy to work with and easy to apply to a surface and / or material to be glued. Preferably, the plasticizers are selected from the group of polyether polyols, polyester polyols, or combinations thereof. The adhesive comprising these plasticizers has the ideal rheology to quickly and easily also treat larger surfaces, eg flat roofs. The adhesive remains sufficiently viscous to remain on the surface after application, yet it remains sufficiently workable, ie. sufficient time is left to spread or smear the applied adhesive further, and to apply a second substrate to be adhered to it.

The term "polyol" is to be interpreted broadly in the context of the present invention, in particular as any fraction comprising one or more hydroxyl groups. Thus, however, a polyol in the light of the present invention includes monols, diols and / or triols.

A further or different embodiment of the adhesive has a viscosity comprised between 90,000 and 750,000 cP at 20 ° C.

The “viscosity” of a substance is a measure of the resistance the substance offers to gradual deformation under the influence of shear or tensile stress. Viscosity can be measured by various viscometers or rheometers, for example a glass capillary viscometer, as known in the prior art. Since the resistance to deformation, or more particularly in the case of liquids to flow, is temperature dependent under the influence of shear stress or tensile stress, viscosity is always expressed in combination with the measuring temperature. In the context of the present invention, use is made of a Brookfield DVE viscometer, which uses a spindle immersed in the adhesive, which spindle is rotated about a calibrated spring. The resistance of the adhesive to the spindle is measured by the deformation of the spring. This deformation is determined optically. The measuring range of the Brookfield DVE viscometer depends on the rotational speed of the spindle, the size and shape of the spindle, the holder in which the spindle rotates, and the full torque of the calibrated spring. Viscosity is expressed in units of milliPascal-second (mPa.s), or centipoise (CP).

The adhesive with a viscosity of between 90,000 and 750,000 cP at 20 ° C is therefore always easy to pump, apply, manipulate, shape, distribute and / or store in suitable containers, such as bottles, at normal operating temperatures. pots, tubes, syringes or glue sausages.

Preferably, the adhesive has a viscosity comprised between 90,000 and 700,000 cP at 20 ° C, with optimum adhesive pumping while further minimizing dripping.

This allows the adhesive to be applied drip-free by means of a suitable applicator, which pumps the adhesive at a low speed.

More preferably, the viscosity of the adhesive is comprised between 90,000 and 110,000 cP or between 500,000 and 700,000 cP at 20 ° C.

In another embodiments, the adhesive includes a solvent to further reduce viscosity.

The solvent, in some embodiments, is present at a concentration comprised between 1.0 and 10.0 M% in order to obtain a viscosity that makes the adhesive suitable for spray and / or spray application.

Preferably the solvent is present in a concentration comprised between 3.0 and 7.0%, most preferably the concentration of the solvent is about 5.0%. The target viscosity for spray applications is in some embodiments between 20,000 and 40,000 cP at 20 ° C.

Preferably the viscosity is comprised between 25000 and 35000 cP at 20 ° C.

Said solvent in some embodiments comprises acetals and / or gasolines.

The said solvent is preferably selected from the group of 1- (butoxymethoxy) butane, 3 - ((bis ((2-ethylhexyl) oxy) methoxy) methyl) heptane, dimethoxymethane, ethoxymethoxyethane, 2,5,7,10-tetraoxaundecane , 1- (propoxymethoxy) propane, 1,3-dioxolane, 1,3-dioxan-5-ol, 1,3-dioxolane-4-methanol, or combinations thereof.

More preferably, said solvent is selected from 1- (butoxymethoxy) butane and / or 3 - ((bis ((2-ethylhexyl) oxy) methoxy) methyl) heptane.

The term "gasoline" in the context of the present invention denotes a mixture of hydrocarbons that can be used as a solvent.

It includes = petroleum distillation fractions with a low viscosity and a relatively low boiling range. "High-boiling fractions" are defined as fractions with a boiling temperature above 100 ° C, while "low-boiling fractions" have a boiling point that is substantially below 100 ° C.

In a further or different embodiment, the adhesive comprises at least two adhesion promoters selected from the group consisting of gamma-aminopropyltrimethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltrimethoxysilane, n- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, 3-aminopropylmethyldimethoxysilane, 3-aminopropylmethyldimethoxysilane, - methoxysilane, N-2-aminoethyl-3-aminopropyltri-methoxysilane, 3-aminopropyltri-methoxysilane, 3-aminopropyltriethoxy-silane, bis- (3-trimethoxysilylpropyl) amine, 3-aminopropyltrimethoxysilane, 3-aminopropyltrimethoxy-silane, or combinations thereof. The term "adhesion promoter", in the context of the present invention, refers to a substance that enhances the bonding of an adhesive to a particular material. The adhesion promoter can thus also be used to glue together the adhesion of two, normally less compatible, materials. The amount in which the adhesion promoter is present in the adhesive is selected as an "effective amount" which is suitable for achieving good short and long term adhesion. The specific effective amount required will depend on the choice of catalyst, the amount in which the catalyst is present and the basicity of the primary or secondary amine in the adhesion promoter. Adhesion promoters with a higher basicity are generally used at lower concentrations than those with a lower basicity. At higher concentrations of the catalyst, lower amounts of adhesion promoter are preferably used. A carelessly chosen balance results in suboptimal adhesion. In one embodiment, the adhesion promoter is used in an amount of 0.1% or more, preferably 0.5% or more. Even more preferably, the adhesion promoter is added in an amount of 2.0% or less, even more preferably 1.5% or less.

In a further or different embodiment, the adhesion promoters are selected from the group of 2-aminoethyl-3-aminopropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-glycidyloxypropyltrimethoxysilane, or combinations thereof.

In some embodiments, the adhesive includes two adhesion promoters. They preferably have a ratio comprised between 3: 1 and 1: 1.

to BE2019 / 5578 In a further or different embodiment, the adhesion promoters are 2-aminoethyl-3-aminopropyltrimethoxy-silane and 3-aminopropyltrimethoxy-silane, which are respectively in a ratio comprised between 3: 1 and 1: 1. The aforementioned combination of adhesion promoters is extremely suitable in the range mentioned for the bonding of roofing materials that are normally difficult to glue, such as EPDM. The rheology of the adhesive is also extremely suitable for bonding large surfaces in a fast and efficient manner, preferably by means of a suitable applicator.

In a further or different embodiment, the adhesive further comprises an additive selected from the group of a catalyst, a water scavenger, an antioxidant, a heat stabilizer, a pigment, a filler, or combinations thereof. The term “catalyst” refers to the substance which initiates and / or completes the bonding, cross-linking and / or curing of the adhesive. Preferably, the adhesive comprises one or more tin catalysts suitable for catalyzing the silanol condensation reaction. Correct selection of the catalyst is important to obtain the desired bonding of the adhesive to a substrate, preferably without a primer. The choice of catalyst is influenced by the choice of polymer. Preferably, dioctyl tin bis (acetylacetonate) is used as a catalyst, which is ideally suited for the cross-linking of silane-modified polymers.

The term “water scavenger” denotes an additive that protects the adhesive from moisture, preventing unwanted and premature cross-linking. Such water scavengers include hydrocarbyl alkoxy silanes such as vinyl trimethoxy silane, diethyl malonate and alkyl phenol alkylates. Preferably, the adhesive comprises vinyl trimethoxysilane.

Such water scavengers are, according to one embodiment, used in an amount of 0.1 m% or higher in the adhesive, preferably 0.5 m% or higher. More preferably, water scavengers are used in an amount of 5.0 m% or less, even more preferably 2.0 m% or less.

The term “antioxidant” covers a chemical compound capable of neutralizing harmful free radicals. They are usually added to products, such as foods or polymers, for the oxidation reaction with oxygen

+ BE2019 / 5578 from ambient air. This extends the lifespan and / or shelf life of these products. In the present adhesive, this antioxidant extends the life of the adhesive after application, whereby the adhesive remains optimally intact.

The heat stabilizer is selected in one embodiment from the group of alkyl substituted phenols, phosphites, sebacates, cinnamates, or combinations thereof. Preferably, the heat stabilizer is selected from the group consisting of bis- (1,2,2,6,6-pentamethyl-4-piperidinyl) -sebacate, ethylene-bis- (oxyethylene) -bis- (3-tert-butyl-4-hydroxy) -5- (methylhydrocinnamate), tetraki-isodecy-4,4'-iso-propylidene diphosphite and butylated hydroxytoluene The heat stabilizer, in one embodiment, is present in an amount of 5.0 m% or less in the adhesive, preferably 2, 0 m% or less.

In a further or different embodiment, the filler is selected from the group consisting of calcium carbonate, calcium carbonate coated with stearate, or combinations thereof. These fillers have a low water content which is desirable since silane modified polymers cure under the influence of moisture. Preferably the filler is selected from the group of calcium carbonate coated with stearate. This filler is also hydrophobic, which further expels water from the adhesive composition. In a further or different embodiment, the adhesive comprises a thickener, preferably a polyamide thickener. The thickener further contributes to the rheological properties of the adhesive and is preferably used when exceptional workability is sought. A second aspect of the present invention relates to an applicator suitable for applying an adhesive, comprising a nozzle, which nozzle comprises an inlet and at least a first and a second distribution channel, which inlet, first and second distribution channel are located in the same plane with their longitudinal directions. and wherein the first and second distribution channels are symmetrically coupled on either side of said inlet, and wherein each of the distribution channels terminate in a separate outlet, the respective path length starting from the inlet to the respective individual outlets, for each of said distribution channels in essentially the same.

The applicator according to the present invention allows an adhesive to be applied easily and quickly, whereby several, evenly distributed adhesive beads are formed. Due to the design of the nozzle, the flow at the outlets starts and stops simultaneously and the flow rate passed during application is the same for all outlets. The even distribution of the adhesive strips then allows them to be easily processed, eg spreading, after which the material to be glued can be applied. The use of the applicator thus minimizes the number of actions required, as several adhesive beads can be applied simultaneously. Use of the applicator thus results in considerable time savings and also allows optimal dosing of the applied adhesive. As a result, the adhesive is used as economically as possible and there are no surpluses, shortages and / or losses. Preferably, the respective outlets are oriented parallel to each other in their longitudinal direction, so that the glue beads can each be applied at an equal angle. More preferably, the respective ends of the outlets are aligned. This allows the outlets to make simultaneous contact with the same, preferably flat, surface, which further simplifies the application of an adhesive to this surface.

According to a further or different embodiment, the distribution channels are provided with one or more angular rotations. These angular rotations make it possible to reduce the dimensions of the spray head, while the path lengths of the various distribution channels can be easily adjusted under the influence of the angular rotations. In some embodiments, each of the distribution channels has the same internal diameter. The equal internal diameter determines the throughput of an adhesive and ensures that the different adhesive beads are equally thick and leave the outlets just as quickly. Preferably, the internal diameter of the distribution channels is comprised between 0.5 and 2.0 cm, resulting in adhesive beads having an ideal thickness for applying and processing an adhesive in a rapid and efficient manner. If the applicator is not used for some time, the nozzle does not need to be cleaned. The chosen internal diameter of the distribution channels ensures that the adhesive at the level of the outlets evenly hardens into a so-called “plug” if the applicator is not used for a longer period of time. This plug prevents further hardening of the adhesive in the nozzle and thus ensures that the adhesive also retains its qualities for longer periods.

Moreover, the plug is easy to remove, after which the applicator can be used again immediately.

More preferably, the internal diameter of the distribution channels is between 0.8 and

1.7 cm, even more preferably between 1.0 and 1.5 cm.

In some embodiments, the spacing between the different outlets is between 5.0 and 20.0 cm.

This spacing is ideally suited for fast and efficient bonding of larger surfaces, such as flat roofs, and allows the subject handling the applicator to bond an entire surface in just two steps.

By means of the applicator the adhesive beads are evenly applied at the said intermediate distances, after which the entire surface is covered with the adhesive by means of a transverse movement.

Preferably, the mutual distance between the different outlets is comprised between 8.0 and 17.0 cm, more preferably between 10.0 and 15.0 cm, even more preferably between 11.0 and 13.0 cm.

According to a further or different embodiment, the spray head comprises an even number of distribution channels.

Preferably the number of distribution channels is comprised between 2 and 12. More preferably the number of distribution channels is comprised between 2 and 8, even more preferably the number of distribution channels is comprised between 4 and 6. In some embodiments, the nozzle has 4 distribution channels, in some in other embodiments, the nozzle has 6 distribution channels.

According to a further or different embodiment, the applicator comprises a plunger cylinder, which plunger cylinder comprises a plunger, and which plunger cylinder is suitable for receiving and pushing a glue sausage.

Said glue sausage comprises an adhesive, surrounded by a packaging foil, which allows the glue to be easily filled into the applicator.

Subsequently, the plunger cylinder, comprising a plunger, is responsible for pushing the glue sausage evenly towards the nozzle.

Unlike tubes or pots and the like, the amount of waste when using an adhesive in a glue sausage is nil.

The applicator preferably comprises a coupling piece, which coupling piece connects the nozzle and the plunger cylinder to each other.

The coupling piece herein comprises one or more knives, which knives are suitable for cutting a glue sausage.

This has the advantage that the glue sausage does not have to be opened for filling the applicator. Moreover, the content of the glue sausage can be optimally utilized as a result and in the end virtually no adhesive remains.

According to a further or different embodiment, the applicator further comprises a drive and / or a guide unit. The term "guide unit" in the context of the present invention is to be interpreted as any device capable of supporting and / or guiding the applicator in its direction of movement, before, during and / or after its use. A guiding unit can thus be provided in the form of a tripod or supporting frame, which tripod or frame is coupled at the level of the plunger cylinder, and may or may not be provided with one or more wheels. Preferably, the guide unit is provided on the side of the nozzle rather than the side of the drive, in order to simplify the uniform application of glue beads on a surface. The guiding unit thus has a stabilizing function. The term “drive” should be interpreted as any form of automation and / or motorization involving pumping, extruding and / or moving the adhesive in the applicator. In some embodiments, the drive is a motor that pushes the plunger. In some embodiments, the driver is provided with a handle, which increases the ergonomics of the applicator for the subject handling it. Preferably, the drive is provided with one or more buttons for operating it. A subject handling the applicator is thus able to switch the drive on and / or off, which allows precise control of the applicator and simplifies bonding by means of the applicator. A third aspect concerns a kit of an applicator according to the present invention and a glue sausage, said glue sausage comprising an adhesive according to the present invention. The adhesive and the applicator are optimally matched to each other in order to provide for the rapid and efficient application of the adhesive to large surfaces, while always having good pumpability and workability. In addition, the sealant allows to keep the amount of residual waste or residual glue to a minimum, which is an ecological advantage.

A fourth aspect concerns a method for applying an adhesive by means of an applicator according to the present invention, comprising the steps of: (a) mounting the applicator, (b) introducing the adhesive into the applicator, and (c) applying the adhesive to a material to be glued, wherein the adhesive leaves the applicator via the nozzle, and wherein the adhesive travels from the inlet to each of the outlets of the nozzle in the same travel time. In what follows, the invention is described by way of example. non-limiting examples illustrating the invention, and which are not intended or should be construed to limit the scope of the invention.

EXAMPLES Example 1: Silane-modified polymer adhesive for bonding EPDM Due to its high elasticity, inertness and long life, ethylene propylene diene monomer rubber (EPDM) is a frequently used material in the construction industry, for example as a roof sealing. However, EPDM is usually difficult to glue. The silane-modified adhesive with the composition below is extremely suitable for the bonding of EPDM, whereby good adhesion and fast bonding is guaranteed. category component 22 polymer dimethoxymethylsian plasticizer polyether diol adhesion promoter 2-aminoethyl-3-aminopropyltrimethoxy-silane 3-aminopropyltrimethoxy-silane additive antioxidant water scavenger filler The ability to apply and process the adhesive quickly, easily and evenly on larger surfaces makes the current adhesive extremely suitable for bonding EPDM. Good adhesion to EPDM is obtained by the presence of the adhesion promoters 2-aminoethyl-3-aminopropyltrimethoxy-silane and 3-aminopropyltrimethoxy-silane, which are in a ratio between 3: 1 and 1: 1.

The silane-modified polymer adhesive has a viscosity of 90,000 to 700,000 cP at 20 ° C. Example 2: Silane-modified polymer adhesive for bonding insulation materials. Insulation materials exist in a variety of materials, for which the silane-modified polymer adhesive of the following composition forms a suitable adhesive. The insulation material can be glued quickly and efficiently to different surfaces. In addition, the adhesive is not very sensitive to moisture, which means that sufficient time is available even in damp rooms to carry out the bonding carefully, without running the risk of premature fixation. category component 22 polymer = dimethoxysilyl polyether 225 plasticizer di-isononyl phthalate adhesion promoter 2-aminoethyl-3-aminopropyltrimethoxy-silane 3-aminopropyltrimethoxy-silane additive antioxidant water scavenger filler The silane modified polymer adhesive has a viscosity of 90000-700000 cP.

DETAILED DESCRIPTION OF THE FIGURES The figures shown in FIG. Nozzle 1 shown in 1a comprises 6 distribution channels 2-4 "and an inlet 5, which inlet 5 and which distribution channels 2-4" are located in the same plane. The distribution channels 2-4 'are hereby symmetrically coupled on either side of the inlet 5. Each of the distribution channels 2-4 "end in a separate outlet 6, the respective path length starting from the inlet 5 to the respective individual outlets 6, for each of said distribution channels 2-4 'is substantially the same. The outlets 6 are oriented parallel to each other and their ends lie on the same straight, which configuration allows the nozzle 1 with its outlets 6 to make six simultaneous contact points with a surface, which makes it allows the simultaneous application of six adhesive beads to a surface. The configuration of the various distribution channels 2-4 "and outlets 6 of the nozzle

1 is reinforced by means of a bearing surface 7 that interconnects the inlet 5, distribution channels 2-4 "and outlets 6. The system shown in FIG. Spray head 1 shown 1b comprises 4 distribution channels 2-3 "and an inlet 5, which inlet 5 and which distribution channels 2-3" are located in the same plane. The distribution channels 2-3 'are here symmetrically coupled on both sides of the inlet 5. Each of the distribution channels 2-3 "run into a separate outlet 6, the respective path length starting from the inlet 5 to the respective individual outlets 6, for each of said distribution channels 2-3 'is substantially the same. The outlets 6 are oriented parallel to each other and their ends lie on the same straight line, which configuration allows the nozzle 1 with its outlets 6 to make four simultaneous contact points with a surface, making it allows simultaneous application of four adhesive beads on a surface. The configuration of the different distribution channels 2-3 "and outlets 6 of the nozzle 1 is reinforced by means of a bearing surface 7 which interconnects the inlet 5, distribution channels 2-3" and outlets 6. 2 shows the nozzle 1 of Fig. 1 in use. The nozzle 1 comprises 6 distribution channels 2-4 "and an inlet 5, which inlet 5 and which distribution can eels 2-4 "are located in the same plane. The distribution channels 2-4 'are here symmetrically coupled on either side of the inlet 5. Each of the distribution channels 2-4' end in a separate outlet 6, the respective path length starting from the inlet 5 to the respective individual outlets 6, for each of said distribution channels 2-4 "is substantially the same. The outlets 6 are oriented parallel to each other and their ends lie on the same straight, which configuration allows the nozzle 1 with its outlets 6 to make six simultaneous contact points with a surface. of the different distribution channels 2-4 'and outlets 6 of the nozzle 1 is reinforced by means of a bearing surface 7 which interconnects the inlet 5, distribution channels 2-4' and outlets 6. From Fig. 2 it becomes clear how the different glue beads 8 are simultaneously applied to a surface by using the nozzle 1. Fig. 3 shows an applicator according to the present invention. contains a nozzle 1, a plunger cylinder 10 in which a plunger 12 is mounted, whereby the nozzle 1 and the plunger cylinder 10 are coupled to each other by means of a coupling piece

9. The drive unit 11 is arranged so that the plunger 12 can be moved through the plunger cylinder 10, so that the glue contained in the plunger cylinder 10 is moved through the coupling 9, and through the nozzle 1 to apply the glue. The drive unit 11 may be provided with a handle so that a subject handling the applicator can smoothly hold and operate said applicator. The drive unit 11 is herein possibly provided, preferably on the handle, with a button for switching the drive unit on and / or off. At the level of the plunger cylinder 10, and preferably closer to the coupling piece 9 than to the drive unit 11, a guide unit 13 is possibly mounted, which allows the applicator to rest on a surface when applying the adhesive to this surface. The guiding unit 13 is possibly provided with one or more wheels, which enable the applicator to move smoothly over the surface during use of the applicator. FIG. 4 shows the perspective view of an applicator according to an embodiment of the present invention in use. The applicator comprises a nozzle 1 and a plunger cylinder 10, in which a plunger 12 is slidably mounted, which nozzle 1 and plunger cylinder 10 are coupled to each other by means of a coupling 9. A subject 14 uses the applicator by holding the applicator at the level of the applicator. drive unit 11 which it can switch on, for example by means of a switch. When the drive unit 11 is switched on, the plunger 12 is advanced through the plunger cylinder 10, whereby the glue present in the plunger cylinder 10 is displaced through the plunger cylinder 10, through the coupling piece 9, and through the nozzle 1. and evenly applied to a surface. The applicator allows an ergonomic and simple operation thanks to the guide unit 13, which is coupled to the plunger cylinder 10, preferably closer to the coupling piece 9 than to the drive unit 11. The guide unit 13 is preferably provided with one or more wheels, which have a to allow simple movement of the applicator over the surface before, during and / or after the application of the adhesive beads 8 on the surface.

FIG. 5 shows the transverse view of a coupling piece 9 according to the present invention. The coupling piece 9 comprises a connecting ring 15, preferably provided with a screw thread, for coupling with the plunger cylinder 10 and a connecting ring 16, preferably provided with a screw thread, for coupling with the spray head 1. Furthermore, the coupling piece 9 is provided with one or more knives 17, which cut the packaging film 19 of a glue sausage 18 upon movement of the plunger cylinder 10 through the coupling piece 9, to the nozzle 1, thereby displacing the glue from the packaging film, while pre-moving the plunger 12. FIG. 6 shows such glue sausage 18 for use in an applicator according to the present invention.

The glue sausage 18 comprises a glue composition surrounded by a packaging film 19. List of designated parts: 1 nozzle 2,2 'first and second distribution channel, first channel pair 3,3' third and fourth distribution channel, second channel pair 4,4 fifth and sixth distribution channel, third channel pair 5 inlet 6 outlet 7 bearing surface 8 glue bead 9 coupling piece 10 plunger cylinder 11 drive unit 12 plunger 13 guide unit 14 subject 15 connecting ring plunger cylinder 16 connecting ring nozzle 17 knife 18 glue sausage 19 packaging film

Claims (15)

CONCLUSIONS An adhesive comprising one or more silane-modified polymers and one or more plasticizers, wherein the ratio between said silane-modified polymers and said plasticizers is between 1: 2 and 2: 1, and wherein said silane-modified polymers comprise a difunctional silane-modified polymer. characterized in that this difunctional silane-modified polymer is dimethoxymethylsilane. Adhesive according to claim 1, characterized in that the plasticizers are selected from the group of polyether polyols, polyester polyols, di-isobutyl phthalate, di-isononyl phthalate, di-isononyl 1,2-cyclohexane dicarboxylate, diethylhexyl phthalate, benzyl butyl phthalate, di- n-butyl phthalate, di-isodecyl phthalate, dioctyl phthalate, or combinations thereof. Adhesive according to claim 2, characterized in that the plasticizers are selected from the group of polyether polyols, polyester polyols, or combinations thereof. An adhesive according to any one of the preceding claims 1-3, characterized in that the adhesive has a viscosity comprised between 90,000 and 750,000 CP at ° C. 5. Adhesive according to any one of the preceding claims 1-4, characterized in that the adhesive comprises at least two adhesion promoters, said adhesion promoters being selected from the group consisting of gamma-aminopropyltrimethoxysilane, N-beta (aminoethyl) -gamma-aminopropyltri - methoxysilane, n- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, 3-aminopropyl-methyldimethoxysilane, N-2-aminoethyl-3-aminopropyltri-methoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyl-trimethoxysilane amine, 3-aminopropyltrimethoxysilane, 3-glycidyloxypropyltrimethoxysilane, or combinations thereof. Adhesive according to claim 5, characterized in that the adhesion promoters are 2-aminoethyl-3-aminopropyltrimethoxy-silane and 3-aminopropyltrimethoxysilane, which are respectively in a ratio between 3: 1 and 1: 1. An adhesive according to any one of the preceding claims 1-6, characterized in that the adhesive comprises an additive selected from the group of a catalyst, a water scavenger, an antioxidant, a heat stabilizer, a pigment, a filler, or combinations thereof. A kit of an applicator suitable for applying an adhesive and a glue sausage, said glue sausage comprising an adhesive according to any one of claims 1-7, said applicator comprising a nozzle (1), which nozzle has an inlet (5) and at least one first (2) and a second distribution channel (2), the inlet, first and second distribution channel being located in the same plane with their longitudinal directions, and wherein the first and second distribution channel are symmetrically coupled on either side of said inlet, and each of the distribution channels discharge into a separate outlet (6), characterized in that the respective path length starting from the inlet to the respective individual outlets is substantially the same for each of said distribution channels. Kit according to claim 8, characterized in that the respective outlets (6) are oriented parallel to each other in their longitudinal direction. Kit according to claim 8 or 9, characterized in that the respective ends of the outlets (6) are in one straight line. A kit according to any one of the preceding claims 8-10, characterized in that the nozzle (1) comprises an even number of distribution channels (2-4) comprised between 2 and 12, preferably comprised between 2 and 8. A kit according to any one of the preceding claims 8-11, characterized in that the applicator comprises a plunger cylinder (10), which plunger cylinder comprises a plunger (12), and which plunger cylinder is suitable for receiving and pushing a glue sausage (18). ). Kit according to claim 12, wherein the applicator comprises a coupling piece (9), which coupling piece connects the spray head (1) and the plunger cylinder (10) to each other, characterized in that the coupling piece comprises one or more knives (17), which knives are suitable for cutting a glue sausage (18). Kit according to any one of the preceding claims 8-13, characterized in that the applicator further comprises a drive unit (11) and / or a guiding unit (13). A method for applying an adhesive according to any one of claims 1-7 by means of an applicator from the kit according to any one of claims 8-14, comprising the steps of: a. Mounting the applicator, b. introducing the adhesive into the applicator, and c. applying the adhesive to a material to be glued, the adhesive exiting the applicator through the nozzle, characterized in that the adhesive travels from the inlet to each of the nozzle outlets in the same travel time.