Patents Assigned to Sika Technology AG
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Publication number: 20250145527Abstract: Processes for the production of polycarboxylate ether copolymers in the solid state, polycarboxylate ether copolymers in the solid state produced thereby, and mineral binder compositions including the same. The processes include the steps of providing a first type of monomer, treating the first type of monomer with an acid, providing a second type of monomer, copolymerizing the acid-treated first type of monomer and the second type of monomer to obtain a copolymer which is a polycarboxylate ether, and transferring the copolymer thus obtained into the solid state.Type: ApplicationFiled: January 18, 2023Publication date: May 8, 2025Applicant: SIKA TECHNOLOGY AGInventors: Christina HAMPEL, Jörg ZIMMERMANN, Jürg WEIDMANN
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Patent number: 12291659Abstract: A two-pack urethane-based adhesive that includes a second-pack liquid in which liquid components are inhibited from bleeding out and which can be inhibited from decreasing in thixotropic properties, and that gives cured products having, after aging, excellent adhesiveness. The two-pack urethane-based adhesive including a first-pack liquid, which includes a urethane prepolymer having an isocyanate group, and a second-pack liquid, which includes water, an active hydrogen compound (which is not water) having an active hydrogen capable of reacting with the isocyanate group, and cellulose nanofibers, wherein the first-pack liquid and the second-pack liquid each independently contain carbon black and/or an inorganic-based filler, the content of the cellulose nanofibers being 0.1-1.5 mass % with respect to the content of the water.Type: GrantFiled: December 14, 2021Date of Patent: May 6, 2025Assignee: SIKA TECHNOLOGY AGInventors: Yuichi Matsuki, Megumi Abe, Kazuki Miura
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Publication number: 20250136847Abstract: A moisture-curing polyurethane composition includes at least one polyether urethane polymer P1 containing isocyanate groups and having a monomeric diisocyanate content of not more than 0.5% by weight, more than 20% by weight of carbon black, optionally not more than 2% by weight of a room temperature solid polyurethane polymer P2, obtained from the reaction of at least one monomeric diisocyanate with at least one at least semicrystalline polyester polyol or polycarbonate polyol in an NCO/OH ratio of at least 1.3/1, and optionally up to 5% by weight of a polyether urethane polymer P3, obtained from the reaction of at least one monomeric diisocyanate with at least one polyether diol having an average molecular weight Mn of not more than 2500 g/mol in an NCO/OH ratio of at least 1.3/1, with the proviso that at least one of the polymers P2 and P3 is present in the composition.Type: ApplicationFiled: March 20, 2023Publication date: May 1, 2025Applicant: SIKA TECHNOLOGY AGInventors: Geraldine GAILLARD, Michele GATTI
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Patent number: 12286530Abstract: A two-component epoxy resin composition includes a first component K1 including at least one epoxy resin A that contains on average more than one epoxy group per molecule; and a second component K2 including a hardener B for epoxy resins; wherein the two-component epoxy resin composition contains between 2 and 35 wt.-%, based on the total weight of the composition, of at least one impact modifier I in either one or both of components K1 and K2; wherein the impact modifier I is a reaction product of at least one polymeric diol, at least one polyisocyanate, and cardanol. The two-component epoxy resin composition exhibits excellent toughness and impact peel strength.Type: GrantFiled: June 12, 2020Date of Patent: April 29, 2025Assignee: SIKA TECHNOLOGY AGInventors: Christoph Mayer, Tobias Meier
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Publication number: 20250128473Abstract: A method for producing a three-dimensional object from a curable binder composition with an additive manufacturing process, whereby before application of the curable binder composition, at least one, for example at least two, especially at least three, in particular at least four, coloring suspension(s) includes a color pigment and a solvent, especially water, is added to the curable binder composition to color the curable binder composition.Type: ApplicationFiled: February 22, 2022Publication date: April 24, 2025Applicant: SIKA TECHNOLOGY AGInventors: Didier LOOTENS, Maxime LIARD, Victoria ABPLANALP, Léa GARANDEL
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Publication number: 20250122348Abstract: A method for producing a sealing element including a polymeric carrier layer and one or two functional coatings, wherein the functional coatings are formed by strewed one or more particle-based compositions to the surface of the polymeric carrier layer. Also, a sealing element and the use of the sealing element.Type: ApplicationFiled: June 2, 2022Publication date: April 17, 2025Applicant: SIKA TECHNOLOGY AGInventors: Matia BULLONI, Roy Z'ROTZ, Roger KATHRINER, Roman DA RIN, Christoph FÄH, Carl KNIGHT, Matthias GÖSSI
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Patent number: 12275817Abstract: A curing agent for epoxy resins, including at least one amine A1 of the formula (I) and at least one amine A2 which is a polyalkyleneamine or polyethyleneimine, where the weight ratio between amine A1 and amine A2 is in the range from 20/1 to 1/2. The curing agent of the invention enables inexpensive and low-emission epoxy resin products having good processability, long pot life, surprisingly rapid curing, especially also under cold conditions, high strength, high bond strengths, high glass transition temperature and a low tendency to yellowing, with formation of surprisingly nice surfaces having barely any blushing-related defects even in the case of two-dimensional application and under moist and cold conditions. Such epoxy resin products are advantageously usable as coating, especially for floors, or as adhesive.Type: GrantFiled: September 30, 2019Date of Patent: April 15, 2025Assignee: SIKA TECHNOLOGY AGInventors: Edis Kasemi, Andreas Kramer, Ursula Stadelmann, Urs Burckhardt
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Publication number: 20250115794Abstract: A moisture curable adhesive composition including at least 65 wt.-% of at least one isocyanate-functional polyurethane polymer P obtained by reacting: (a) a polyol composition including (a1) at least one polyester polyol PO1, (a2) at least one polyether polyol PO2, and (b) at least one polyisocyanate PI, wherein the adhesive composition further includes at least one non-functionalized thermoplastic polymer TP having a softening point determined by Ring and Ball method according to ISO 4625 standard of 70-200° C., preferably 75-185° C. The adhesive composition can also be used for bonding of substrates in production of white goods, automotive vehicles, and electronic devices.Type: ApplicationFiled: January 17, 2023Publication date: April 10, 2025Applicant: SIKA TECHNOLOGY AGInventors: Paul TONG, Elyes JENDOUBI, Weiming ZHANG
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Patent number: 12264256Abstract: A polymeric coating composition for application to a substrate includes a polymer matrix and an organic polymeric aggregate. The polymeric aggregate is utilized as a partial or complete replacement for aggregate containing free respirable crystalline silica traditionally included in anti-slip or anti-skid coating compositions. Methods of making the coating and coating a substrate with the coating composition to provide a slip- or skid-resistant coating on a surface of a substrate are also disclosed.Type: GrantFiled: September 27, 2019Date of Patent: April 1, 2025Assignee: SIKA TECHNOLOGY AGInventors: Chia Wang, Brian Mullen
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Patent number: 12264104Abstract: The invention relates to a multi-component composition for the manufacture of polyurethane/urea cementitious hybrid system, comprising at least one isocyanate component selected from the group consisting of monoisocyanate, polyisocyanate and NCO terminated prepolymer, at least one polyol, water, catalyst, at least one acidic additive, and hydraulic binder, wherein the acidic additive is at least one selected from the group consisting of Lewis acids, acid precursors and acidic buffers and is in an amount of 0.01 to 3 wt %, based on the total weight of the composition, to the preparation thereof, and to the use of the composition for the preparation of a flooring, waterproofing, screed, grouting, primer, wall paint, roofing or coating in construction applications.Type: GrantFiled: January 31, 2020Date of Patent: April 1, 2025Assignee: SIKA TECHNOLOGY AGInventors: Hang Xu, Jie Shen, ShengZhong Zhou, Stefan Hirsemann, Andrew Tasker, Josef Weichmann, Lei Guo
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Publication number: 20250101265Abstract: A sealing device includes a polymeric carrier layer having a first and a second major surface and a first functional layer including 25-95 wt.-% of at least one polymer P1 and 5-75 wt.-% of at least one solid filler F, wherein the polymeric carrier layer has a thickness of 10-450 ?m and wherein the sealing device has a mass per unit area of not more than 450 g/m2. A method produces a sealing device, and a sealing device is used as a waterproofing membrane, vapor barrier, vapor retarder, gas barrier membrane, volatile organic compound (VOC) barrier membrane, or as a geomembrane.Type: ApplicationFiled: June 1, 2022Publication date: March 27, 2025Applicant: SIKA TECHNOLOGY AGInventors: Roman DA RIN, Christoph FÄH, Alessandro FISCHER
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Publication number: 20250091294Abstract: A computer implemented method for generating machine control data for a 3D printer to produce a three-dimensional object with a three-dimensional surface structure on at least one surface of the three-dimensional object, comprises the steps of: a) Providing a three-dimensional data model of the three-dimensional object to be produced; b) Defining an area to be structured on a surface of the data model of the three-dimensional object; c) Conversion of the data model of the three-dimensional object provided in step a) to specific machine control data for the 3D printer defining a print path of the 3D printer and optionally printing parameters of the 3D printer required for producing the three-dimensional object; d) Identifying positions on the print path lying on the area to be structured; e) Defining an offset amplitude of the three-dimensional surface structure, whereby the offset amplitude represents a height and/or depth of the surface structure with respect to the surface of the three-dimensional objectType: ApplicationFiled: September 16, 2024Publication date: March 20, 2025Applicant: SIKA TECHNOLOGY AGInventors: Mylène BERNARD, Didier LOOTENS
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Publication number: 20250091531Abstract: A structural element system for a motor vehicle with a damping element arranged in the structural element, including: a structural element which includes two joined walls which form, in one portion, a cavity having at least two open ends, a first wall in this portion having an opening; a damping element with a support and an expandable material arranged on the support, the support including a closed surface and at least one side wall fastened to this closed surface by ribs; wherein the damping element is arranged in the structural element such that the closed surface of the support covers the opening of the first wall and in that the side wall substantially partially closes an open end of the cavity.Type: ApplicationFiled: February 1, 2023Publication date: March 20, 2025Applicant: SIKA TECHNOLOGY AGInventor: Henrik LINDGREN
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Publication number: 20250091953Abstract: A single- or two-component mortar composition including i) an aluminate binder, ii) a calcium sulfate binder, iii) one or more fillers with a raw density of at least 2.0 g/cm3, and iv) one or more lightweight fillers with a raw density of less than 1.5 g/cm3, wherein the quantity of lightweight filler equals 30 to 70 wt. %, the total quantity of aluminate binder and calcium sulfate binder equals 20 to 65 wt %, and the weight ratio of aluminate binder to calcium sulfate binder ranges from 1:1 to 1:10. When used, the mortar composition hardens quickly and is suitable as a lightweight fill for producing floor structures on substrates with a limited load-bearing capacity.Type: ApplicationFiled: January 16, 2023Publication date: March 20, 2025Applicant: SIKA TECHNOLOGY AGInventors: Sascha WIELING, Jens FISCHEDICK, Philipp SCHRÖDER, Nick SCHNEIDER
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Patent number: 12252078Abstract: 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: GrantFiled: September 7, 2021Date of Patent: March 18, 2025Assignee: SIKA TECHNOLOGY AGInventors: Henrik Lindgren, Dimitri Marcq
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Publication number: 20250084206Abstract: The use of an amine of formula (I) for curing epoxy resins, whereby synthetic resin products with a surprisingly high glass transition temperature are formed with particularly low exotherm. The amine of formula (I) enables in particular epoxy resin mouldings, potting compounds and composites which are simple and void for defects to be produced, having beautiful surfaces and allow high service temperatures.Type: ApplicationFiled: July 4, 2022Publication date: March 13, 2025Applicant: SIKA TECHNOLOGY AGInventors: Edis KASEMI, Urs BURCKHARDT, Andreas KRAMER, Ursula STADELMANN
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Patent number: 12246776Abstract: A system for insulating a structural element in a motor vehicle, including a structural element and a device arranged thereon and having a carrier. The system also includes an expandable adhesive, which is arranged on the structural element or on the carrier via pumping or via extrusion. The carrier and the expandable adhesive are designed and arranged in such a way that the carrier limits the expandable adhesive in at least one direction during the expansion of same.Type: GrantFiled: August 27, 2019Date of Patent: March 11, 2025Assignee: SIKA TECHNOLOGY AGInventors: Thomas Gasparri, Nicolas Brichet
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Patent number: 12240784Abstract: A multi-component composition comprising a first component including water, and a second component including at least one hydraulic binder, wherein the multi-component composition includes a copolymer CP, wherein the copolymer is a vinyl versatate copolymer CPA, and/or a copolymer based on styrene and (meth) acrylic acid esters CPB. The amount of hydraulic binder, based on the total weight of the multi-component composition, is from 25-65 weight-%. The multi-component composition is especially suitable as a flooring material for industrial floors and car parks.Type: GrantFiled: March 9, 2020Date of Patent: March 4, 2025Assignee: SIKA TECHNOLOGY AGInventors: Patricia Gimeno, Carola Kaddatz, Jochen Grötzinger, Till Weikert
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Patent number: 12240960Abstract: A thixotropic agent for increasing the yield point of a curable composition, wherein the thixotropic agent includes (i) at least one urea compound from the reaction of at least one isocyanate with at least one amine and (ii) at least one polyether having blocked hydroxyl groups. The thixotropic agent is preparable in a simple manner and forms a spreadable paste which is firm at room temperature. It is particularly suitable as a constituent of moisture-curing polyurethane or SMP compositions, giving a good increase in the yield point thereof, without adversely affecting storage stability or migration characteristics. It enables phthalate-free adhesives, sealants or coatings that have surprisingly good conveyability coupled with a high yield point, and do not cause any problems with odor or fogging.Type: GrantFiled: November 11, 2019Date of Patent: March 4, 2025Assignee: SIKA TECHNOLOGY AGInventors: Andreas Kramer, Urs Burckhardt, Michael Schlumpf, Martin Konstanzer
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Publication number: 20250066251Abstract: The invention relates to a dry mineral binder composition comprising cement and mineral fillers for the manufacture of molded parts by way of 3D printing. The binder composition additionally contains at least one aluminum sulfate-based accelerator, at least one polycarboxylate ether-based super-plasticizer and at least one rheology additive.Type: ApplicationFiled: November 14, 2024Publication date: February 27, 2025Applicant: SIKA TECHNOLOGY AGInventors: Gary BOON, Maxime LIARD, Didier LOOTENS, Lolita HAUGUEL