Patents Assigned to Sika Technology AG
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Publication number: 20230331898Abstract: A nitrogen compound having a melting point of at least 65° C. is used as a curing agent for heat curing in a heat-curable single-component polyurethane composition, which includes a prepolymer with isocyanate end groups made of at least one polyisocyanate and at least one polyol, wherein the solid nitrogen compound is selected from a polyamine, a hydrazide or mixtures thereof.Type: ApplicationFiled: November 30, 2021Publication date: October 19, 2023Applicant: SIKA TECHNOLOGY AGInventors: Michael SCHLUMPF, Sven REIMANN
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Publication number: 20230322620Abstract: Cementitious compositions and methods for the preparation of corresponding cementitious compositions, appropriate oxidatively degraded polysaccharides and methods for producing the same, as well as the use of oxidatively degraded polysaccharides as water reducing agents in cementitious compositions, wherein the compositions include an oxidatively degraded polysaccharide as a water reducing agent to provide similar water reducing properties to cementitious composition formulated with lignosulfonates. The oxidatively degraded polysaccharides have the advantage over lignosulfonates of a lower price and a more consistent quality and are expected to be compatible with polycarboxylatether cement additives.Type: ApplicationFiled: December 7, 2021Publication date: October 12, 2023Applicant: SIKA TECHNOLOGY AGInventor: Ottavio ROMBOLA
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Publication number: 20230322622Abstract: Methods for the treatment of non-hardened cement compositions, especially returned concrete, and admixtures suitable to be used in such methods. The admixtures include modified starch and a sugar. Also, solid granules obtained by the methods and fresh concrete or mortar utilizing solid granules thus obtained.Type: ApplicationFiled: March 25, 2022Publication date: October 12, 2023Applicant: SIKA TECHNOLOGY AGInventors: Ana JIMENEZ, Svetlana LEVITINA, Kyle GOLDHAMMER
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Publication number: 20230323009Abstract: A moisture-curing polyurethane composition including: at least one isocyanate-functional polymer with a content of monomeric isophorone diisocyanate of below 0.5 weight-%, obtained from the reaction of isophorone diisocyanate and at least one polyol, and at least one aldimine of formula (I). The composition has a low toxicity, good shelf life stability and cures quickly to an elastic material of low surface tack and good mechanical properties, particularly in terms of high tensile strength and modulus of elasticity at high elongation. It enables coatings, sealants and adhesives with excellent stability under outdoor weathering conditions and high UV load. The aldimine of formula (I) allows to overcome the drawbacks caused by the removal of most of the monomeric isophorone diisocyanate in terms of cure speed, surface tackiness and final strength of such compositions.Type: ApplicationFiled: October 18, 2021Publication date: October 12, 2023Applicant: SIKA TECHNOLOGY AGInventors: Urs BURCKHARDT, Andreas KRAMER, Michael SCHLUMPF, Alex COUPE
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Patent number: 11780738Abstract: An aqueous suspension including 5 to 65 wt. % of calcium hydroxide, wherein at least 50 wt. % of the calcium hydroxide is present in the form of nanoparticles, and at least one compound for stabilizing the suspension. The aqueous suspension accelerates the setting of mineral binder compositions without adversely affecting the processing properties of the composition.Type: GrantFiled: March 22, 2019Date of Patent: October 10, 2023Assignee: SIKA TECHNOLOGY AGInventors: Patrick Juilland, Emmanuel Gallucci, Denise Schönenberger, Luis Pegado, Lukas Frunz, Arnd Eberhardt
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Patent number: 11780783Abstract: An accelerator powder for cement and also rapid-setting binder compositions which contain the accelerator powder and the use in mortar or concrete. The accelerator powder includes from 10 to 99.7% by weight of a water-insoluble mineral powder P and from 0.3 to 90% by weight of at least one compound V selected from the group consisting of alkali metal halides and alkaline earth metal halides, alkali metal nitrates and alkaline earth metal nitrates, alkali metal nitrites and alkaline earth metal nitrites, alkali metal thiocyanates and alkaline earth metal thiocyanates and hydroxyalkylamines or salts thereof, and mixtures thereof.Type: GrantFiled: June 13, 2022Date of Patent: October 10, 2023Assignee: SIKA TECHNOLOGY AGInventors: Lolita Hauguel, Maxime Liard, Didier Lootens
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Patent number: 11781048Abstract: A one-component thermosetting epoxy resin adhesive, including a) at least one epoxy resin A of formula (II) wherein substituents R? and R? independently of one another are H or CH3 and index s has value of 0-12, fraction of epoxy resin A being from 20-70 wt.-%, based on total weight of one-component thermosetting epoxy resin adhesive; and b) at least one epoxy novolac EN of formula where R2= or CH2, R1=H or methyl and z=0-7, fraction of epoxy novolac EN being from 1-8 wt.-% based on total weight of one-component thermosetting epoxy resin adhesive; and c) at least one latent hardener B for epoxy resins; and d) at least one accelerator C for epoxy resins; and e) at least at least one toughness improver D, fraction of toughness improver D being from 5-40 wt.-%, based on total weight of one-component thermosetting epoxy resin adhesive.Type: GrantFiled: August 31, 2020Date of Patent: October 10, 2023Assignee: SIKA TECHNOLOGY AGInventors: Geng Lin, Blanka Proko
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Patent number: 11781043Abstract: A sealing element for sealing joints in concrete structures including a profile having a center portion and first and second side portions on opposite sides of, the center portion. The side portions of the profile are at least partially covered with a functional coating which is operative to bond with a fresh cementitious composition casted against it and allowed to harden. A method produces a sealing element, a method seals a joint between two sections of concrete, a sealed construction, and a use of a sealing element for sealing of a joint in a concrete construction.Type: GrantFiled: May 3, 2018Date of Patent: October 10, 2023Assignee: SIKA TECHNOLOGY AGInventors: Herbert Ackermann, Roy Z'Rotz, Christoph Fäh, Matia Bulloni, Martin Eckl, Marcel Langenegger, Patrick Bräker, Roman Da Rin, Wolf-Rüdiger Huck, Simon Schoenbrodt, Johannes Pecher
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Publication number: 20230312416Abstract: A cementitious composition, in particular a dry mortar, including a) 5-50 mass parts, preferably 10-45 mass parts, more preferably 15-29 mass parts of a composite hydraulic binder, b) 0.1-4 mass parts, preferably 0.5-3 mass parts, more preferably 1-2 mass parts of powdered polyurethane, and c) optionally 50-90 mass parts, preferably 60-85 mass parts of aggregate. The cementitious composition is particularly useful as a cementitious tile adhesive, a render or part of a render system.Type: ApplicationFiled: November 5, 2021Publication date: October 5, 2023Applicant: SIKA TECHNOLOGY AGInventors: Jerome SOUDIER, Guillaume LE SAINT, Alexandre BEN HARRATH, Ludovic AGUERO
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Publication number: 20230312855Abstract: A pumpable thermally foaming filler compositions based on combinations of a liquid epoxy resin and a polyvinyl chloride resin and/or an acrylic resin powder and at least one alkali metal salt of a fatty acid containing 16 C-atoms or 18 C-atoms, wherein the alkali metal is calcium or zinc. These pumpable filler materials provide the advantage that they can be expanded to provide foam with high expansion values after humidity exposure/storage. Further described are methods for filling closed spaces with the pumpable thermally foaming filler composition as well as vehicle parts which are obtainable with the indicated methods.Type: ApplicationFiled: September 29, 2021Publication date: October 5, 2023Applicant: SIKA TECHNOLOGY AGInventors: Antonio VOCI, Sara HALTINER, Carl Philipp ROSENAU
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Publication number: 20230312875Abstract: A mixture of isomeric aldimines of the formulae (Ia), (Ib) and (Ic) in which the ratio of the trans,trans isomer (Ia) to the sum of the cis,trans isomer (Ib) and the cis,cis isomer (Ic) is in the range of 5/95 to 30/70, and its use as latent hardener for moisture-curing isocyanate-functional polyurethane compositions. The inventive mixture of isomeric aldimines enables polyurethane compositions with very low content of monomeric isophorone diisocyanate and excellent stability under outdoor wheathering conditions and high UV load, which cure quickly to an elastic material of low surface tack and good mechanical properties, particularly in terms of high tensile strength and modulus of elasticity at high elongation. Such compositions are particularly suitable as elastic adhesives and/or sealants or elastic coatings, particularly for outdoor use such as on roofs, floors or ships.Type: ApplicationFiled: October 18, 2021Publication date: October 5, 2023Applicant: SIKA TECHNOLOGY AGInventors: Urs BURCKHARDT, Andreas KRAMER
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Publication number: 20230312975Abstract: A floor protection system including (i) optionally at least one epoxy resin primer, (ii) at least one polyurethane coating, (iii) optionally quartz sand, which has been scattered into and/or onto the polyurethane coating, and (iv) an epoxy resin sealant, obtained from a resin component containing at least one epoxy liquid resin and a hardener component containing at least one amine of formula (I). The floor protection system has an aesthetically pleasing, hard and robust surface and a good dynamic crack bridging with surprisingly high elasticity of the sealant. The system is particularly suitable as a surface protection system for parking levels and drivable ramps.Type: ApplicationFiled: November 8, 2021Publication date: October 5, 2023Applicant: SIKA TECHNOLOGY AGInventors: Jochen GRÖTZINGER, Uwe VON DER BRÜGGEN, Oguz SARIOGLU, Edis KASEMI
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Publication number: 20230311464Abstract: A sealing device and a method for producing a sealing device and to use of a sealing device for waterproofing of a substrate, the sealing device including a functional layer having a first major surface and a second major surface and a barrier layer directly or indirectly connected to the second major surface of the functional layer, wherein the functional layer includes at least one first solid filler having a median particle size d50 in the range of 0.5-100 ?m and at least one second solid filler different from the at least one first solid filler.Type: ApplicationFiled: July 5, 2021Publication date: October 5, 2023Applicant: SIKA TECHNOLOGY AGInventors: Herbert ACKERMANN, Carine KERBER
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Patent number: 11773294Abstract: A method for adhesively bonding two substrates by means of a moisture-curable adhesive composition, wherein at least one of the substrates includes at least 40 wt.-% of a mixture, said mixture consisting of: between 15 and 99 wt.-% of at least one thermoplastic polymer; between 1 and 85 wt.-% of at least one elastomer; and wherein the moisture-curable adhesive composition includes: at least one polymer containing silane groups; between 10 and 40 wt.-% of at least one polymeric plasticizer; between 0.1 and 5 wt.-% of at least one amino-functional alkoxysilane; between 0 and 5 wt.-% of at least one C1-C12-alkyl-functional alkoxysilane. The method yields adhesively bonded substrates without the requirements of using migrating plasticizers and pre-treating of the substrates.Type: GrantFiled: March 19, 2020Date of Patent: October 3, 2023Assignee: SIKA TECHNOLOGY AGInventors: Marcel Oertli, Robert Roskamp, Helena Wallimann, Christoph Fäh, Fabien Choffat
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Publication number: 20230303444Abstract: A comb polymer is used as an inerting agent for swelling clays and/or non-swelling clays in gypsum compositions, the comb polymer includes: a) at least one poly(alkylene oxide) side chain-bearing monomer unit M1 without ionic groups, b) optionally at least one cationic monomer unit MC, wherein the molar ratio of the cationic monomer units MC to the side chain-bearing monomer units M1 is equal to or less than 10, c) optionally at least one anionic monomer unit MA, wherein the molar ratio of the anionic monomer units MA to the side chain-bearing monomer units M1 is less than 1, preferably equal to or less than 0.5, d) optionally, at least one non-ionic monomer unit M3, wherein the molar ratio of the non-ionic monomer units M3 to the side chain-bearing monomer units M1 is less than 5.Type: ApplicationFiled: July 12, 2021Publication date: September 28, 2023Applicant: SIKA TECHNOLOGY AGInventors: Ulf VELTEN, Annette WEINKAUF, Christina HAMPEL, Jürg WEIDMANN, Lukas FRUNZ, Patrick JUILLAND
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Publication number: 20230295043Abstract: The use of polyol having a functionality of 4 or less and an OH group density of at least 0.033 mol OH per g polyol as a composition for reducing shrinking of construction chemicals on the basis of a hydraulic binder comprising a) alumina cement and/or calcium sulfoaluminate cement, b) calcium sulfate, and c) optionally Portland cement.Type: ApplicationFiled: August 17, 2021Publication date: September 21, 2023Applicant: SIKA TECHNOLOGY AGInventors: Markus KNOEBEL, Nick SCHNEIDER
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Patent number: 11753562Abstract: The invention relates to an epoxy resin composition comprising at least one epoxy liquid resin, bis(aminomethyl)cyclohexane and a wax. The claimed composition can be processed in an excellent manner, cures very rapidly and virtually no yellowing occurs, has a hard, glossy surface of high quality, even during curing under moist conditions such as, for example, 8° C. and 80% relative humidity. The claimed composition is particularly suitable for use as a floor coating, in particular as a top coat or sealing, where low emission together with high demands on the workability, impact strength and the aesthetics exist.Type: GrantFiled: December 18, 2018Date of Patent: September 12, 2023Assignee: SIKA TECHNOLOGY AGInventors: Jochen Grötzinger, Uwe Von Der Brüggen, Johannes Viertel, Edis Kasemi
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Publication number: 20230278505Abstract: An insulating element for sealing off a structural element in a motor vehicle, including a carrier and an expandable material that is arranged on the carrier. The insulating element has a top side and a bottom side which, in a state of use, are aligned substantially in a plane of a cross section of the structural element that is to be sealed off. In addition, the insulating element has at least one guide element, by means of which the insulating element can be arranged on a rail element, with the result that the rail element is arranged substantially perpendicularly to the top side and to the bottom side.Type: ApplicationFiled: September 7, 2021Publication date: September 7, 2023Applicant: SIKA TECHNOLOGY AGInventors: Henrik LINDGREN, Dimitri MARCQ
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Publication number: 20230271884Abstract: Cementitious compositions include: a) 4-80 wt.-%, preferably 26-75 wt.-%, especially 30-66 wt.-% of a cementitious binder, especially of Ordinary Portland Cement, b) 5-95 wt.-%, preferably 20-73 wt.-% more preferably 33-66 wt.-%, of aluminum oxide, and c) 1-15 wt.-% preferably 2-10 wt.-%, more preferably 3-6 wt.-% of fibers. Such cementitious compositions have a very high strength and are used for example for concrete repair or as grouting materials.Type: ApplicationFiled: September 16, 2021Publication date: August 31, 2023Applicant: SIKA TECHNOLOGY AGInventor: Juan Antonio CALAMA
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Publication number: 20230265260Abstract: A combination of carbon nanotubes and at least one amine of formula (I) for producing an electrically conductive epoxy resin coating, and to an electrostatically dissipative floor system, which contains the electrically conductive epoxy resin coating. The epoxy resin floor systems are readily-workable, robust, electrostatically, dissipative, and have a largely constant electrical resistance, which have a highly aesthetic, well-ventilated, even surface.Type: ApplicationFiled: August 31, 2021Publication date: August 24, 2023Applicant: SIKA TECHNOLOGY AGInventors: Jochen GRÖTZINGER, Uwe VON DER BRÜGGEN, Oguz SARIOGLU, Edis KASEMI