Patents Assigned to Sika Technology
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Publication number: 20230072857Abstract: A silane group-containing polymer obtained from reacting (i) an isocyanate group-containing polymer having an NCO content in the range of 0.3 to 4% by weight and a monomeric diisocyanate content of at most 0.3 wt. % obtained from the reaction of at least one monomeric diisocyanate with at least one polyether polyol in a molar NCO/OH ratio of at least 3/1 and subsequent removal of a major part of the unreacted monomeric diisocyanates by means of a suitable separation process, (ii) with at least one amino-, mercapto- or hydroxysilane in a stoichiometric ratio of at least 1 mole of amino-, mercapto- or hydroxysilane per mole equivalent of isocyanate groups.Type: ApplicationFiled: February 3, 2021Publication date: March 9, 2023Applicant: SIKA TECHNOLOGY AGInventors: Andreas KRAMER, Marcel OERTLI, Ursula STADELMANN, Sven REIMANN
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Publication number: 20230075895Abstract: Methods of obtaining aggregates and/or pulverulent mineral material from a starting material comprising hardened mineral binder and aggregates utilizing process auxiliaries selected from the group consisting of polycarboxylate ethers and/or esters (PCE), glycols, organic amines, especially alkanolamines, ammonium salts of organic amines with carboxylic acids, surfactants, especially nonionic surfactants, gemini surfactants, calcium stearate, alkoxylated phosphonic or phosphoric esters, propane-1,3-diol, carboxylic acids, sulfonated amino alcohols, boric acid, salts of boric acid, borax, salts of phosphoric acid, gluconate, iron sulfate, tin sulfate, antimony salts, alkali metal salts, alkaline earth metal salts, lignosulfonates, glycerol, melamine, melamine sulfonates, water absorbents in the form of a superabsorbent polymer or in the form of a sheet silicate, anticaking agents, sugars, sugar acids, sugar alcohols, phosphates, phosphonates, and mixtures thereof.Type: ApplicationFiled: February 19, 2021Publication date: March 9, 2023Applicant: SIKA TECHNOLOGY AGInventors: Arnd EBERHARDT, Patrick JUILLAND, Luis PEGADO, Emmanuel GALLUCCI, Lukas FRUNZ
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Patent number: 11597684Abstract: A waterproofing system including a functional layer S1 including 10-80 wt.-% of at least one thermoplastic polymer P1 and 10-80 wt.-% of at least one solid particulate filler F, wherein the surface of the functional layer S1 has an Auto-correlation length of waviness W(Sal) of at least 50 ?m. Further, a method for producing a waterproofing system and to the use of a mechanical surface treatment step to increase the waviness factor, determined as the ratio of the Root mean square roughness of waviness W(Sq) to the square of the Auto-correlation length of waviness W(Sal), of a surface of a functional layer S1.Type: GrantFiled: June 21, 2018Date of Patent: March 7, 2023Assignee: SIKA TECHNOLOGY AGInventors: Dario Caviezel, Wolf-Rüdiger Huck, Herbert Ackermann
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Publication number: 20230068858Abstract: An amine-functional adduct from the reaction of an amine mixture containing at least one diamine of formula (I) and at least one diamine of formula (II) in a weight ratio ranging from 65/35 to 95/5 with at least one diepoxide in a stoichiometric ratio of at least 1. 2 moles of diamine of the formula (I) to 1 mole equivalent of epoxide groups. The adduct is liquid at room temperature without diluent even in the presence of a small excess of diamine and is surprisingly low in viscosity. In addition, it is particularly cost-effective, as it is available from an amine mixture that is technically easy to produce. The adduct enables low-emission or emission-free epoxy resin coatings with surprisingly good workability at surprisingly fast curing, which have a high hardness and low tendency to yellowing, and which hardly tend to blushing-related defects even in cold and humid conditions.Type: ApplicationFiled: February 22, 2021Publication date: March 2, 2023Applicant: SIKA TECHNOLOGY AGInventors: Edis KASEMI, Oguz SARIOGLU, Urs BURCKHARDT, Andreas KRAMER, Ursula STADELMANN, Jochen GRÖTZINGER, Uwe VON DER BRÜGGEN
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Publication number: 20230066422Abstract: The invention is directed to a thermally expandable composition comprising at least one solid rubber, at least on tackifying resin, a vulcanization system, and a thermally expandable graphite. The invention is also directed to a welding sealer tape comprising a substrate layer composed of the thermally expandable composition, to a method for providing sealing, structural adhesion, baffling, or combination thereof to a structure of a manufactured article, to a baffle and/or reinforcing element comprising the thermally expandable composition, to a method for sealing, baffling and/or reinforcing a cavity or a hollow structure, and to use of a thermally expandable graphite as a blowing agent in a thermally expandable material.Type: ApplicationFiled: February 11, 2021Publication date: March 2, 2023Applicant: SIKA TECHNOLOGY AGInventor: Shunsuke YAMADA
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Patent number: 11591503Abstract: A composition includes an epoxy-based curable adhesive having at least one an epoxy resin modified acrylonitrile-butadiene copolymer and at least one thermoplastic elastomer. The at least one thermoplastic elastomer is present in the curable adhesive as a penetrating polymer network. Further, an expandable article is composed of the composition, a reinforcing element includes a support and an expandable article, a method for reinforces cavities of structural components, and the composition is used as a shape memory material.Type: GrantFiled: January 25, 2019Date of Patent: February 28, 2023Assignee: SIKA TECHNOLOGY AGInventors: Karsten Frick, Alina Keller
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Patent number: 11590739Abstract: A sealing device has a waterproofing layer, a functional layer, and an adhesive layer coated on and at least partially covering the first major surface of the waterproofing layer opposite the side of the functional layer. Also, a method produces a sealing device, a method waterproofs a substrate, and the use of the sealing device seals lapped joints formed between overlapping portions of waterproofing membranes and patches breaches in waterproofing membranes.Type: GrantFiled: November 29, 2018Date of Patent: February 28, 2023Assignee: SIKA TECHNOLOGY AGInventors: Matia Bulloni, Roy Z'Rotz, Simon Schönbrodt, Christoph Bärtsch, Josef Von Rotz
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Publication number: 20230054396Abstract: A branched polymer containing silane groups having an average of at least 2.1 silane groups per molecule, from the reaction of (i) a polymer containing isocyanate groups and having an NCO content ranging from 0.7% to 4% by weight, obtained from the reaction of at least one monomeric diisocyanate with at least one polyether polyol in a molar NCO/OH ratio of at least 1.5/1, (ii) with at least one amino-, mercapto- or hydroxysilane, in a stoichiometric ratio of at least 1 mol of amino-, mercapto- or hydroxysilane per molar equivalent of isocyanate groups. The polymer containing silane groups is storage-stable, liquid at room temperature and easily handled, and permits curable compositions having excellent processability, rapid curing, high strength coupled with good extensibility, and good thermal stability. It is particularly suitable as a constituent of moisture-curable sealants, adhesives or coatings, additionally including a further, in particular linear, polymer containing silane groups.Type: ApplicationFiled: February 3, 2021Publication date: February 23, 2023Applicant: SIKA TECHNOLOGY AGInventors: Andreas KRAMER, Marcel OERTLI, Ursula STADELMANN, Sven REIMANN
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Publication number: 20230059391Abstract: A single-component adhesive composition includes: an aqueous acrylic polymer dispersion comprising water and at least one water-dispersed acrylic polymer P; between 0.2 wt.-% and 2.0 wt.-%, preferably between 0.5 wt.-% and 1.5 wt.-%, based on the total composition, of at least one water-dispersed or water-dissolved cross-linker C that can react with carboxylate groups; and between 20 wt.-% and 60 wt.-%, based on the total composition, of at least one filler F with the mean particle size D50 of its primary particles being ?10 ?m, wherein said at least one water-dispersed acrylic polymer P contains free carboxylic acid groups. The composition is highly suitable as adhesive for floor coverings and shows good tack in the wet state and at the same time enables excellent dimensional stability of the bonded floor coverings.Type: ApplicationFiled: March 2, 2021Publication date: February 23, 2023Applicant: SIKA TECHNOLOGY AGInventors: Bernd OVERKAMP, Tobias BENIGHAUS, Steffen MAIER
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Publication number: 20230047357Abstract: A polyurethane composition includes first and second components, wherein the first component contains between 30% and 99% by weight of a polyol mixture including 100 parts by weight of at least one hydrophobic polyol, 10 to 75 parts by weight of at least one hydrophilic polyol, 0 to 25 parts by weight of at least one diol having two hydroxyl groups linked via a C2 to C9 carbon chain; and also at least one compound having at least one thiol group; and the second component includes at least one polyisocyanate, wherein one of the two components additionally includes at least one metal catalyst for the reaction of hydroxyl groups and isocyanate groups that is able to form thio complexes and the molar ratio of all the thiol groups in the at least one compound to all metal atoms in the at least one metal catalyst is between 1:1 and 250:1.Type: ApplicationFiled: March 18, 2021Publication date: February 16, 2023Applicant: SIKA TECHNOLOGY AGInventors: Martin DEMMIG, Steffen KELCH, Antonio CORSARO
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Publication number: 20230049786Abstract: A moisture-curing polyurethane composition including (i) at least one linear polymer P1 containing isocyanate groups and having an NCO content in range from 0.3%-3.3% by weight, obtained from reaction of at least one monomeric aromatic diisocyanate and polyether diol having an OH number in range from 5-37 mg KOH/g, (ii) at least one branched polymer P2 containing isocyanate groups and having an NCO content in range from 1%-10% by weight, obtained from reaction of at least one monomeric aromatic diisocyanate and at least one polyether triol having an average OH functionality of at least 2.2 and OH number in range from 16-380 mg KOH/g, (iii) and a content of plasticizers of not more than 15% by weight, based on overall composition, wherein polymers P1 and P2 are present in weight ratio in range from 80/20-95/5, and to the use of composition as elastic adhesive or elastic sealant or elastic coating.Type: ApplicationFiled: January 11, 2021Publication date: February 16, 2023Applicant: SIKA TECHNOLOGY AGInventors: Sven REIMANN, Marc BALMER, Melanie JENNI
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Publication number: 20230037916Abstract: A linear polymer containing isocyanate groups and having an NCO content in the range from 0.3% to 1.5% by weight and a monomeric diisocyanate content of not more than 0.5% by weight, wherein it is obtained from the reaction of at least one monomeric aromatic diisocyanate and a polyether diol having an OH number in the range from 5 to 21 mg KOH/g in an NCO/OH ratio of at least 5/1 and subsequent removal of a majority of the monomeric aromatic diisocyanate by means of a suitable separation method, and to moisture-curing polyurethane compositions having a monomeric diisocyanate content of less than 0.1% by weight, comprising said polymer. The polymer of the invention enables elastic adhesives having high elongation, surprisingly high strength and surprisingly good adhesion to plastic substrates.Type: ApplicationFiled: January 11, 2021Publication date: February 9, 2023Applicant: SIKA TECHNOLOGY AGInventors: Sven REIMANN, Melanie JENNI
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Publication number: 20230044204Abstract: A two-component silicone composition made of a component A including a hydroxyl-group terminated polydiorganosiloxane P; between 0.05-5.0 wt. % water, relative to component A; and component B including a non-condensable polydiorganosiloxane; a catalyst K cross-linking polydiorganosiloxanes; between 0-50 wt. % of a first organosilane V1 according to formula (I), between 2-60 wt. % of a second organosilane V2 according to formula (II), up to 25 wt. % of organosilanes V3 having hydrolyzable alkoxysilane groups Si—ORa not falling under the formulae (I) and (II), with Ra being a hydrogen atom or monovalent, linear or branched alkyl group with 1-6 carbon atoms, Rb being a divalent, linear or branched alkyl group or alkenyl group with 2-20 carbon atoms, and Rc being a divalent, linear or branched alkyl group with 2-20 carbon atoms containing a secondary amino group; the composition containing less than 10 mole-%, relative to the amount of organosilane V2, of organosilanes with epoxy groups.Type: ApplicationFiled: January 20, 2021Publication date: February 9, 2023Applicant: SIKA TECHNOLOGY AGInventors: Michael SCHLUMPF, Riccardo SUTER, Samuel JAKOB
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Patent number: 11572100Abstract: A reinforcing element for reinforcing structural elements in vehicles includes: a support having at least one reservoir, which has an outlet opening; an adhesive, which is arranged in the reservoir; and a dispensing element having a separating element and a propulsion element; wherein, when the propulsion element is actuated, the separating element is moved through the reservoir, with the result that the adhesive is dispensed from the reservoir through the outlet opening.Type: GrantFiled: March 11, 2020Date of Patent: February 7, 2023Assignee: SIKA TECHNOLOGY AGInventors: Hakim Benouali, Patrick Cauchie, Dimitri Marcq
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Patent number: 11565757Abstract: A reinforcement element has a carrier having a longitudinal axis and elongate opening extending in the axis direction. The reinforcement element has an insert element having a longitudinal axis constructed to be arranged in the elongate opening. The insert element has first and second portions. The first portions are parallel with a first plane. The insert element longitudinal axis is in this first plane. The second portions are parallel with a second plane. The insert element longitudinal axis is in the second plane. The reinforcement element has a first adhesive which can be arranged on the carrier outer side and on a first group of insert element first portions and to bond the carrier and insert element in the structural element. The reinforcement element has a second adhesive which can be arranged on a second group of insert element first portions and to bond the insert element in the carrier.Type: GrantFiled: April 18, 2018Date of Patent: January 31, 2023Assignee: SIKA TECHNOLOGY AGInventors: Xuping Qian, Raymond Helferty, Michael Niezur
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Patent number: 11565978Abstract: 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: January 22, 2019Date of Patent: January 31, 2023Assignee: SIKA TECHNOLOGY AGInventors: Lolita Hauguel, Maxime Liard, Didier Lootens
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Publication number: 20230022017Abstract: A process for preparing powdered dispersants comprising at least 90% by weight of at least one copolymer CP of the polycarboxylate ether type. The powdered dispersants can be easily dispersed in water. The invention also relates to the use of such powdered dispersants in mineral binder compositions, in particular dry mortars, concrete or gypsum formulations.Type: ApplicationFiled: January 19, 2021Publication date: January 26, 2023Applicant: SIKA TECHNOLOGY AGInventors: Denise MUTHS-KERN, Rasid SAHINAGIC, Christina HAMPEL, Jörg ZIMMERMANN, Nicole JAGIELSKI
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Patent number: 11559919Abstract: A method for the application of hydrous mineral binder compositions which contain fibres. An aqueous accelerator is mixed with the aqueous binder composition in a mixer shortly before the application. The method is very robust and makes it possible to quickly produce even large moulded bodies having a uniform surface and very good strength development properties.Type: GrantFiled: August 8, 2018Date of Patent: January 24, 2023Assignee: SIKA TECHNOLOGY AGInventors: Maxime Liard, Raphael Bourquin, Didier Lootens
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Patent number: 11560492Abstract: A coating system including at least one reactive resin system RH, at least one thixotropic assistant TH selected from the group consisting of urea preparations HZ and fibers FS and at least one inorganic aggregate AZ having a particle size in the range from 0.2 to 3.0 mm. The coating system has a viscosity as measured with a shear rate of 1 s?1 of 9000-100,000 Pas and a viscosity as measured with a shear rate of 100 s?1 of 400-15,000 Pas. The coating system is notable for high surface roughness and for reliable and long-term bonding of the aggregates to the coating with no need for sealing. There is also no need for the coating to be subsequently strewn with aggregates such as sand, for example.Type: GrantFiled: July 9, 2018Date of Patent: January 24, 2023Assignee: SIKA TECHNOLOGY AGInventors: Benjamin Stöhr, Matthias Niethammer, Thomas Pusel, Jochen Grötzinger, Stefan Kühner
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Publication number: 20230017467Abstract: A polyurethane composition includes, based on the total weight of the composition, A) 20-35 wt % of polyurethane prepolymer PU-1 which is a reaction product of ethylene oxide (EO)-terminated polyether triol with an aromatic polyisocyanate, and B) 0.2-3 wt % of polyurethane prepolymer PU-2 which is a reaction product of polyester polyol with an aromatic polyisocyanate. The composition has a low TVOC content, has a good adhesion without the need of primer, can cure rapidly with a high initial bonding strength, while keeping good mechanical properties.Type: ApplicationFiled: December 3, 2020Publication date: January 19, 2023Applicant: SIKA TECHNOLOGY AGInventors: Junjie YANG, Xiaoyan ZHANG