Sika Technology Patente

The present invention relates to the use of a curable polymeric binder composition for the manufacture of 3D articles by an additive manufacturing process comprising applying the curable polymeric binder composition with a movable print head of multi-axis additive manufacturing device, the movable print head having a discharge nozzle for the layer-by-layer application of the curable polymeric binder composition, wherein the curable polymeric binder composition exiting from the discharge nozzle has a viscosity between 3000 and 50000 Pa·s, preferably 4000 and 30000 Pa·s, more preferably 5000 and 20000 Pa·s, wherein the viscosity is measured 5 seconds after the composition exits the discharge nozzle on a plate-plate rheometer at and a constant temperature of 20°C and 50% relative humidity.The use according to the invention enables 3D printing of thermoset materials with unprecedented flexibility and structural complexity.

The invention relates to a two-component polyurethane composition with latent water which is suitable for printing-sleeve applications, wherein the post-curing of the cured polyurethan is improved, comprising in a first component at least one polyol; at least one drying agent and in a second component at least one isocyanate, characterized in that the first component contains latent water reversibly bound by the drying agent.Further aspects of the invention include the use of the inventive composition as an adhesive coating, in particular in printing application, a method of coating and an article obtained from said method.

The present invention relates to a dry cementitious composition, especially a thermally conductive dry cementitious composition, comprising at least one type of metal powder and at least one type of carbonaceous particles, especially wherein the metal powder is iron powder, and wherein the carbonaceous particle is carbon fiber and/ or graphene oxide.

The subject of the invention is the use of a catalyst containing at least one phosphonium cation and at least one aromatic carboxylate anion for the curing of an isocyanate-functional polymer with aromatic isocyanate groups and an NCO-content based on the total polymer of 0.5 to 5 weight-% by trimerisation of the isocyanate groups, a curable composition containing catalyst and the isocyanate-functional polymer, as well as the polyisocyanurate elastomer obtained from the inventive use or the inventive curable composition. The inventive catalyst enables the preparation of polyisocyanurate elastomer with good working time at room temperature, fast curing upon heating to 80 °C, high elongation at high strength and improved dimensional stability after exposure to prolonged compression and heat. Such polyisocyanurate elastomers are particularly suitable for the use as shock absorbers for vehicles.

The invention relates to a thermosetting one-component epoxy resin composition comprising at least one liquid epoxy resin A1, at least one liquid epoxy resin A2, at least one curing agent B for epoxy resins, at least one core-shell polymer D1 and at least one terminally blocked polyurethane polymer D2. The weight ratio of the sum of the at least one liquid epoxy resin A1 and the at least one liquid epoxy resin A2 to the sum of the at least one core-shell polymer D1 and the at least one terminally blocked polyurethane polymer D2 ((A1+A2) / (D1+D2)) is from 0.75 - 3. The epoxy resin compositions have good lap shear strength and impact peel values, as well as before and after cataplasm treatment.

The invention relates to the use of a one-component moisture-curable polyurethane hot-melt adhesive to adhesively bond plasticizer-containing substrates, comprising at least one moisture-curable polyurethane polymer P obtainable by the reaction of at least one isocyanate-functional species A and at least one polyester polyol B. The moisture-curable polyurethane hot-melt adhesive exhibits improved stability against plasticizer migration is particularly suitable for use in interior automotive assembly, as a laminating adhesive or for the building of sandwich elements.

Gegenstand der Erfindung ist ein Härter auf Basis von Isophorondiisocyanat-Oligomeren, umfassend 25 bis 70 Gewichts-% Isophorondiisocyanat-Oligomere, gegebenenfalls in Form von Umsetzungsprodukten mit mindestens einem Polyol, 25 bis 75 Gewichts-% Dimethacrylate der Formel (I), und 0 bis 30 Gewichts-% weitere Substanzen.Der Härter wird bevorzugt verwendet zum Aushärten von Polyurethan- oder Polyharnstoff-Beschichtungen. Er ermöglicht lichtstabile Beschichtungen mit niedriger Viskosität, schneller Aushärtung, hoher Festigkeit bei hoher Dehnbarkeit und ausgezeichneter Witterungsstabilität.

The invention relates to an autonomous mobile apparatus (100) for carrying spraying equipment comprising:- a mobile base unit (101) comprising a drive assembly,- a spraying assembly (102) comprising at least one applicator (105), wherein the at least one applicator (105) is configured to be carried by an operator (120) applying a liquid product (L) to a surface (121), and- a control unit (103) operable to control the movement of the mobile base unit (101), wherein the autonomous mobile apparatus (100) is configured to autonomously follow the operator (120) and/or the at least one applicator (105) carried by the operator (120).

The present invention relates to a one-component thermosetting epoxy resin adhesive, comprising at least one metal acrylate based latent hardener and at least one toughness improver based on synthetic rubber, preferably an ethylene vinyl acetate copolymer. The expandable one-component thermosetting epoxy resin adhesive have good adhesion on metal substrates, sufficient expansion rates and improved impact resistance.

The present invention relates to cementitious binder compositions and dry mortars compositions comprising Portland cement, calcium aluminate cement, calcium sulfate, and superabsorbent polymer. The present invention also relates to methods for tiling of surfaces using such compositions.

The invention relates to a two- or three-component composition comprising, in a spatially separated arrangement, a first component comprising a polyolefin having a polymer backbone consisting of repeating units derived from an olefinically unsaturated monomer having 4 carbon atoms and; and a second component comprising a preparation comprising at least one aromatic polyisocyanate having 2 or more isocyanate groups and/or a reaction product having isocyanate groups obtained by reacting said polyisocyanate having 2 or more isocyanate groups and a polyolefin having a polymer backbone consisting of repeating units derived from an olefinically unsaturated monomer having 4 carbon atoms; and optionally a third component, wherein the two or three-component composition further comprises at least one linear aliphatic polyisocyanate having 2 or more isocyanate groups and/or at least one cyclic aliphatic polyisocyanate having 2 or more isocyanate groups (b4) as constituent of the second component and/or third component, wherein the content of linear aliphatic polyisocyanate and/or cyclic aliphatic polyisocyanate is 10 wt.-% or less of the second component. The invention further relates to a coating preparation obtainable by mixing such composition, a cured composition obtainable by curing such coating preparation, a method of preparing a coating layer from such composition, a coated substrate obtainable by said method and the use of said coating preparation.

Gegenstand der Erfindung ist ein Amin-funktionelles Addukt erhalten aus der Umsetzung von mindestens einem Diamin der Formel (I) mit mindestens einem Isocyanatgruppen-haltigen Polymer mit einem Gehalt an Polybutadien-Ketten von mindestens 20 Gewichts-% in einem Verhältnis der Anzahl Mol Diamin der Formel (I) pro Molequivalent Isocyanatgruppen von mindestens 1.3.Das Amin-funktionelle Addukt ist in einem einfachen Verfahren herstellbar und ermöglicht Epoxidharz-Klebstoffe mit guter Verarbeitbarkeit, hoher Festigkeit und sehr hoher Schlagzähigkeit.

Gegenstand der Erfindung ist ein Amin-funktionelles Addukt erhalten aus der Umsetzung von mindestens einem Diamin der Formel (I) mit mindestens einem Isocyanatgruppen-haltigen Polymer mit einem mittleren Molekulargewicht M<n> von mindestens 1'000 g/mol in einem Verhältnis der Anzahl Mol Diamin der Formel (I) pro Molequivalent Isocyanatgruppen von mindestens 1.3, wobei das Isocyanatgruppen-haltige Polymer einen Gehalt an monomeren Diisocyanaten von weniger als 0.5 Gewichts-% aufweist. Das Addukt ist einfach herstellbar, lagerstabil und ermöglicht Epoxidharz-Klebstoffe mit guter Verarbeitbarkeit, schneller Aushärtung und guter Dehnbarkeit bei hoher Festigkeit und/oder hoher Schlagzähigkeit.

Subject of the invention is a waterbased topcoat composition comprising at least one anionic polyurethane dispersion, at least one hydroxyl group-containing polyvinyl butyral polymer and at least one polyisocyanate, whereby the weight ratio between the solids content of the polyurethane dispersion and the polyvinyl butyral polymer is 25/75 to 80/20, and the molar NCO/OH ratio is 0.4/1 to 1.5/1.The inventive composition is highly suitable as topcoat on a basecoat, preferably a polyurethane basecoats, with durable interlayer adhesion after prolonged water exposure, thereby providing a waterproofing system particularly suitable for low slope roofs.

Gegenstand der Erfindung ist eine härtbare Zusammensetzung umfassend mindestens ein Polymer mit Endgruppen der Formel (I) enthaltend eine aromatische Aldimingruppe und einem mittleren Molekulargewicht M_n von 1'000 bis 30'000 g/mol, und mindestens eine Verbindung mit zwei oder mehr 1,3-Ketoestergruppen der Formel (II).Die härtbare Zusammensetzung ist nicht empfindlich auf Feuchtigkeit, härtet bei Raumtemperatur beim Vermischen der Komponenten schnell und zuverlässig aus und ermöglicht eine überraschend hohe Dehnbarkeit und einen überraschend hohen Weiterreisswiderstand bei hoher Festigkeit und guter Stabilität gegenüber Hitze und Hydrolyse.

Use of a polymer material in manufacture of 3D articles by means of additive manufacturing, the polymer material comprising:a) At least one polyvinyl chloride resin P,b) At least one modifying polymer MP, andc) Optionally at least one inorganic filler F,wherein the at least one modifying polymer MP is a terpolymer of an olefin, carbon monoxide and an ethylenically unsaturated carboxylic ester monomer

The invention relates to a one-component dispersion adhesive comprising: a) At least one polyurethane polymer PU having isocyanate-reactive groups, b) At least one polymer P obtained from polymerization of one or more types of olefinically unsaturated monomers, and c) At least one surface deactivated oligomeric polyisocyanate PI.

The present invention relates to a method for grouting a marine structure, especially offshore wind turbine structure, where a grouting composition comprises Portland cement and at least one supplementary cementitious material. Furthermore, the present invention relates to a marine structure, preferably an offshore wind turbine structure, constructed thereby.

The invention relates to an electrically conductive epoxy resin coating comprising liquid epoxy resin, a curing agent for the epoxy resin, 0.003 - 0.1 wt.-% of carbon nanotubes CNT and at least one alkanolamide quaternary ammonium compound AQC. The electrically conductive epoxy resin coating is easy to apply, shows good levelling with good deaeration, has an even, aesthetically pleasing surface and is suitable as a constituent of an electrostatically dissipative floor system.

The invention relates to an electrically conductive epoxy resin coating comprising liquid epoxy resin, a curing agent for the epoxy resin, carbon nanotubes CNT, a blocked isocyanate prepolymer BIP, a polyol ester PE having at least three (meth)acrylate ester groups and a reactive diluent RD. The electrically conductive epoxy resin coating has suitable electrical resistance, is easy to apply, shows an aesthetically pleasing surface and displays high impact resistance.

The present invention relates to activators for blended cements comprising at least one source of calcium sulfate, hydrated lime, and calcium aluminate, and cementitious compositions comprising the same. The present invention also relates to methods to increase the mechanical strength of cementitious compositions comprising blended cements by intermixing or intergrinding an activator comprising at least one source of calcium sulfate, hydrated lime, and calcium aluminate.

The present invention relates to mould release agents comprising at least one oil and at least one corrosion inhibitor. The present invention also relates to methods for casting of cementitious compositions using the mould release agents comprising at least one oil and at least one corrosion inhibitor.

The present invention is concerned with plasterboards having a stepped single lap joint on at least two opposing edges thereof, wherein the respective steps at the opposing edges are arranged with a touching transition to the respective opposing main faces of the plasterboard. The present invention is further concerned with a drywall construction, which is prepared with respective plasterboards, and thereby provide improved fire resistance to the drywall. The present invention is furthermore concerned with a process of producing a respective drywall construction and a use of stepped single lap joint in a plasterboard for improving the fire resistance of a drywall construction.

Die vorliegende Erfindung betrifft eine Polyurethanzusammensetzung bestehend aus einer ersten Komponente und einer zweiten Komponente, wobei die erste Komponente mindestens ein Polyol, mindestens ein Diol, mindestens eine Verbindung, die mindestens eine Thiolgruppe aufweist, umfasst, und die zweite Komponente optional mindestens ein Polyol sowie mindestens ein Polyisocyanat umfasst, wobei in einer der beiden Komponente zusätzlich mindestens ein Metallkatalysator für die Reaktion von Hydroxylgruppen und Isocyanatgruppen enthalten ist, der Thiokomplexe bilden kann, und wobei die Polyurethanzusammensetzung zusätzlich mindestens 10 Gew.-%, bezogen auf die gesamte Polyurethanzusammensetzung, eines Flammschutzmittels enthält.Eine solche Zusammensetzung erlaubt die beliebige Einstellung der Offenzeit der Polyurethanzusammensetzung innerhalb bestimmter Grenzen und ermöglicht es, lange Offenzeiten mit anschliessender sehr rascher Aushärtung der Zusammensetzung zu erreichen und weist auch die Vorteile einer flammhemmenden Zusammensetzung auf und verfügt über eine besonders gute Haftung auf Aluminiumsubstraten.Weitere Aspekte der Erfindung sind die Verwendung der Polyurethanzusammensetzung und ein Verfahren zum Verkleben von Substraten sowie Artikel entstanden aus dem Verfahren zum Verkleben Gegenstand dieser Erfindung.Die erfindungsgemässe Zusammensetzung ist besonders geeignet als struktureller Klebstoff zum Verkleben von zwei Substraten, insbesondere im Automobilbereich oder als Dichtstoff oder Vergussmasse.

The present invention is concerned with the use of a two-component polymer based putty composition for the covering/filling of joints between plasterboards in dry walls, wherein the composition comprises a polyol component A and a polyisocyanate component B and is free of plasticizers. The use of a respective composition enables a fast, convenient and easy preparation of covered plasterboard joints, which provide excellent stability against crack formation. The present invention is also concerned with drywall constructions, wherein gaps between adjacent plasterboards are filled with a respective two-component polymer based putty composition, kits constituted from such compositions and applicators for the same, processes for the production of drywalls, which involve the use of a respective composition and a use of a respective composition to reduce or prevent surface cracks in joints of a drywall.

The invention relates to an adhesive composition comprising: a) At least one polymer P, b) A stabilizer S comprising b1) At least one first stabilizer S1 and b2) At least one second stabilizer S2, which is different from the at least one stabilizer S1 wherein the first stabilizer S1 is a non-sulfur containing compound having at least two phenolic groups and the second stabilizer S2 is a sulfur containing compound.

1. A multiple-component polyurethane composition composed of a first component A and a second component B, wherein the first component A comprises: a) At least one polyol PO having an average hydroxyl number determined according to ISO 4629-2:2016 standard of 350 - 1500 mg KOH/g, preferably 450 - 1000 mg KOH/g and the second component B comprises: b) At least one aromatic polyisocyanate PI, and wherein the at least one polyol PO is a tetra- or higher functional polyol containing at least one tertiary amine group , preferably one or two tertiary amine groups and wherein the first component A comprises at least 10 wt.-%, preferably at least 15 wt.-%, of the at least one polyol PO.

The present invention relates to a multi-component composition for the manufacture of polyurethane/urea cementitious hybrid systems, to the preparation thereof, and to the use of the composition for the preparation of a flooring, waterproofing, screed, primer, wall paint, grouting, roofing or coating in construction applications. Moreover, it relates to the use of an aromatic and/or CH-acidic 1,3-dicarbonyl compound in the isocyanate component of the multi-component composition for extending the work life time of a polyurethane/urea cementitious hybrid system and improving the storage stability.

The present invention relates to admixtures for cementitious compositions comprising alkanolamine and one of dextrin or hydrogenated dextrin. The present invention also relates to the use of said admixture to increase the late strength of cementitious compositions and to cementitious compositions comprising said admixtures.

The invention relates to a method for leak detection on roofs of a building, comprising the following steps:- defining a location of a monitored roof;- acquiring satellite-based thermal infrared pictures of the location of the monitored roof at a selected surveyance time;- evaluating the satellite-based thermal infrared pictures for leak detection.

The invention relates to an acoustic damping material comprising: a) At least one thermoplastic polymer TP, b) At least one plasticizer PL, c) At least one tackifying resin TR, d) At least one wax W , e) At least 15 wt.-%, preferably at least 25 wt.-% of at least one solid particulate filler F, wherein the at least one plasticizer PL comprises at least one bio-based plasticizer and/or the at least one tackifying resin TR comprises at least one bio-based tackifying resin and/or the at least one wax W comprises at least one bio-based wax.

The invention is directed to a fiber material for reinforcement of structures, especially concrete structures, the fiber material comprising: a) A plurality of individually twisted composite fibers having a twist degree of 1 - 200 turns/m and/or b) A plurality of twisted cords comprising at least two composite fibers twisted together and having a twist degree of 1 - 200 turns/m, wherein each composite fiber comprises non-metallic load-bearing fibers kept together by an organic synthetic material.

The present invention relates to fast curing mineral hybrid binders based on calcium aluminate cement and/or calcium sulfoaluminate cement as well as calcium sulfate hemihydrate and construction compositions comprising the same. The mineral hybrid binders and construction compositions are free of any calcium sulfate dihydrate or additionally comprise calcium sulfate dihydrate in a weight ratio of calcium sulfate dihydrate to calcium sulfate hemihydrate in the range of 1:100 to 1:180.

The present invention relates to a one-component thermosetting epoxy resin composition, comprising a) at least one epoxy resin A having on average more than one epoxide group per molecule; b) at least one latent hardener for epoxy resins; c) at least one physical or chemical blowing agent BA; d) at least one core-shell polymer D1; e) at least one cross linked acrylonitrile-butadiene copolymer and f) polyvinyl butyral. The epoxy resin adhesive is notable for the improved ductility and storage stability.

Die vorliegende Erfindung betrifft härtbare Zusammensetzungen enthaltend - mindestens eine Verbindung mit (Meth)acrylat Endgruppen V; - mindestens ein Photoinitiator P; - mindestens ein thermisch expandierbares Material E; - optional Additive AD; und ihre Anwendung im Klebeverbund, umfassend (a) ein Substrat S; (b) eine ausgehärtete härtbare Zusammensetzung, welche auf dem Substrat S aus (a) aufgebracht ist; (c) eine ausgehärtete Klebstoff-Zusammensetzung, welche auf der ausgehärteten härtbaren Zusammensetzung aus (b) aufgebracht ist insbesondere für Verklebungen im Automobilbereich. Ebenso betrifft die vorliegende Erfindung ein Verfahren zum Ablösen des Klebeverbunds umfassend die folgenden Schritte: i) Erwärmen des Klebeverbunds auf mindestens die Ausdehnungstemperatur des thermisch expandierbaren Materials E während mindestens 5 Sekunden, bevorzugt während mindestens 30 Sekunden, besonders bevorzugt während 1 Minute, wobei eine Ausdehnungstemperatur von mindestens 80°C, bevorzugt mindestens 100°C, besonders bevorzugt mindestens 120°C erreicht wird; ii) Trennen der ausgehärteten Zusammensetzung vom Substrat S, direkt nach dem Schritt i) oder nach Abkühlen des Klebeverbunds auf Raumtemperatur, bevorzugt direkt nach dem Schritt i). Die härtbare Zusammensetzung lässt sich schnell und einfach auftragen und aushärten und der Klebeverbund besitzt in der Anwendung eine hohe Zugscherfestigkeit und besitzt nach einem Debonding Stimulus eine tiefe Debondingfestigkeit, lässt sich also schnell und einfach ablösen.

A computer implemented method Computer implemented method (1) for generating modified machine control data for a 3D printer to produce a prototype (400) of a planned three-dimensional object (500) with a printing material, particularly a prototype having a reduced dimensions compared to the original dimensions of the planned three dimensional object (500), whereby initial machine control data (200) suitable for producing the planned three-dimensional object (500) is modified based on a defined scaling factor (210), and optionally defined prototype printing parameters (211), in order to obtain modified machine control data (200') that is suitable for 3D printing the prototype (400) of the planned three dimensional object (500) with the given scaling factor (210).

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