Patents Assigned to Sika Technology
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Publication number: 20210261711Abstract: Methods for using a copolymer, especially as a dispersant for solid particles, in particular as a dispersant for mineral binder compositions, where the copolymer is obtained from ionizable monomers m1 and side chain-bearing monomers m2 that are polymerized by nitroxide-mediated solution polymerization to give the copolymer, wherein the polymerization is conducted in the presence of an agent including a carboxyl group-bearing and phosphated alkoxy amine.Type: ApplicationFiled: May 10, 2021Publication date: August 26, 2021Applicant: SIKA TECHNOLOGY AGInventors: Jürg WEIDMANN, Fabia ULBER, Jörg ZIMMERMANN
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Patent number: 11098228Abstract: An adhesive composition, including at least polymer containing silane groups, between 15 and 35 wt.-% of at least one polymeric plasiticzer, between 0.5 and 2.5 wt.-% of at least one monomeric or oligomeric aminofunctional alkoxysilane S1 with a nitrogen content of between 4.5 and 14.5 wt.-%, and between 0.5 and 2.5 wt.-% of at least one oligomeric aminofunctional alkoxysilane S2 with a nitrogen content of between 15 and 20 wt.-%. The adhesive composition is particularly suitable to seal or bond thermoplastic substrates, such as polyolefins or bituminous materials, and shows fast adhesion build-up and low volatile organic carbon (VOC).Type: GrantFiled: September 17, 2018Date of Patent: August 24, 2021Assignee: SIKA TECHNOLOGY AGInventors: Oscar Larsson, Marcel Oertli
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Patent number: 11097259Abstract: A compound containing at least one hexahydrotriazine unit of formula (I) having at least one amidine or guanidine group and to the use thereof as a catalyst for the crosslinking of a functional compound, in particular a polymer including silane groups. The compound contains at least one hexahydrotriazine unit of formula (I) is producible in a simple process from readily available feedstocks, odorless at room temperature, non-volatile and largely non-toxic. The compound accelerates the crosslinking of functional polymers surprisingly well and by simple variation of the substituents is variable such that it has very good compatibility in different polymers as a result of which such compositions do not have a propensity for migration-based defects such as separation, exudation or substrate contamination.Type: GrantFiled: July 17, 2017Date of Patent: August 24, 2021Assignee: SIKA TECHNOLOGY AGInventors: Rita Cannas, Urs Burckhardt
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Patent number: 11097458Abstract: The invention relates to a mold base for a system for injection molding of plastic parts, in particular for automotive body and/or structure components, preferably for baffle and/or reinforcing structures, comprising at least one, namely first, bridge manifold with at least a first and a second bridge manifold opening for feeding material to at least a first and a second sub-manifold of at least one mold insert assembly and at least a first and a second control valve, wherein the first control valve is provided and configured for controlling the material feed through the first bridge manifold opening and the second control valve is provided and configured for controlling the material feed through the second bridge manifold opening.Type: GrantFiled: December 20, 2017Date of Patent: August 24, 2021Assignee: SIKA TECHNOLOGY AGInventors: Brent Logan, Everett Woolum
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Publication number: 20210253776Abstract: A composition including a first component containing at least one polyol and at least one compound having at least one reactive group of the formula (I), and a second component containing at least one aromatic polyisocyanate and/or at least one polymer containing aromatic isocyanate groups. The composition has a long open time and, even in the case of small amounts of compound having at least one reactive group of the formula (I), enables elastic coatings having improved mechanical properties without causing problems with odor immissions or migration effects. It is thus particularly suitable as a coating for floors or roof areas.Type: ApplicationFiled: July 24, 2019Publication date: August 19, 2021Applicant: SIKA TECHNOLOGY AGInventors: Hans HÄBERLE, Urs BURCKHARDT
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Patent number: 11091400Abstract: An admixture for a hydraulic composition includes a polycondensation product P containing a copolymer prepared by polycondensation of a monomer mixture containing compounds A to C of the following Formulae (A) to (C); and a polycarboxylic acid-based polymer Q including a structural unit having an amino and an imino group, and/or a structural unit having an amino, imino, and amido group: (wherein R1 is a hydrogen atom, alkyl, or alkenyl group; A1O is a C2-4 alkylene oxide group; p is a number of 1 to 300; and X is a hydrogen atom, an alkyl, or acyl group; R2 is an alkyl or alkenyl group; A2O is a C2-4 alkylene oxide group; q is a number of 1 to 300; and Y1 is a phosphate ester group; and R3 is a hydrogen atom, carboxy, alkyl, alkenyl, phenyl, naphthyl, or heterocyclic group; and r is a number of 1 to 100).Type: GrantFiled: February 8, 2018Date of Patent: August 17, 2021Assignees: SIKA TECHNOLOGY AG, TOHO CHEMICAL INDUSTRY CO., LTD.Inventors: Kaname Saitoh, Toshihiro Ogawa, Michael Wernher Danzinger, Akira Suga, Taro Tsushima, Seiichi Koshisaka
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Publication number: 20210246101Abstract: The use of an aldehyde mixture containing 70 to 95 wt % of aldehydes of formula (I) and 5 to 30 wt % of alkylbenzene compounds not corresponding to formula (I) as a blocking agent for amines results in odorless, especially economically blocked amines, which at room temperature are typically liquid and have a surprisingly low viscosity. Such blocked amines are particularly suitable as latent hardeners in isocyanate-group-containing compositions. Single-component moisture-curing polyurethane compositions formulated therewith are surprisingly stable in storage, can be used for low-emission applications without odor problems and do not trigger any problems with plasticizer migration. Surprisingly, said compositions even have advantages over corresponding compositions having latent hardeners based on purified aldehydes of formula (I), in particular with respect to viscosity, storage stability and especially strength.Type: ApplicationFiled: June 19, 2018Publication date: August 12, 2021Applicant: SIKA TECHNOLOGY AGInventors: Urs BURCKHARDT, Andreas KRAMER
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Publication number: 20210246257Abstract: A curing agent for epoxy resins has N-benzylethane-1,2-diamine and N,N?-dibenzylethane-1,2-diamine in a weight ratio in the range from 65/35 to 95/5. The curing agent is easy to prepare, thins epoxy resins particularly well, and enables low-emission epoxy resin products that have good workability and a long pot-life, cure reliably and surprisingly fast and can be walked on after a short time, in particular even in cold conditions. Coatings of particularly high mechanical grade, with a high surface quality and a minimal tendency to yellowing, can thus be produced. Epoxy resins of this type are particularly suitable for coating floors.Type: ApplicationFiled: October 1, 2019Publication date: August 12, 2021Applicant: SIKA TECHNOLOGY AGInventors: Edis KASEMI, Andreas KRAMER, Ursula STADELMANN, Urs BURCKHARDT
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Publication number: 20210238095Abstract: A composition including: a first component A, includes: between 68 and 99.9 wt.-% of an aqueous dispersion of at least one polymer, the aqueous dispersion including the polymer with an amount of between 20 and 90 wt.-%; between 0 and 2 wt.-% of a nonionic or ionic dispersing agent; a second component B, includes: between 10 and 30 wt.-% of a nonionic, non-aqueous liquid carrier, between 0 and 20 wt.-% of calcium sulfate, between 10 and 89.9 wt.-% of at least one hydraulic binder, between 0 and 10 wt.-% of a thixotropy agent; wherein both components A and B are prepared and stored separately and mixed directly before application; and with the proviso that the first component A furthermore includes: between 0.1 and 15 wt.-% of a monovalent metal salt, and the second component B furthermore comprises: between 0.1 and 25 wt.-% of a polyamine.Type: ApplicationFiled: May 3, 2018Publication date: August 5, 2021Applicant: SIKA TECHNOLOGY AGInventors: Ukiwo ONUOHA, Steffen MAIER, Oscar LARSSON
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Publication number: 20210238844Abstract: A method for installing a sealing element for a concrete joint, which avoids the use of split formworks. The sealing element used in the method includes a body having a center portion and first and second side portions on opposite sides of the center portion. It is further directed to a sealed concrete construction obtainable by using the method.Type: ApplicationFiled: May 3, 2019Publication date: August 5, 2021Applicant: SIKA TECHNOLOGY AGInventors: Patrick BRÄKER, Marcel LANGENEGGER
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Publication number: 20210230405Abstract: A thermally expandable rubber composition, including a) at least one solid rubber A from the group made of styrene-butadiene rubber, cis-1,4-polybutadiene, synthetic isoprene rubber, natural rubber, ethylene-propylene-diene rubber (EPDM), nitrile rubber, butyl rubber and acrylic rubber; b) processing oil PO, comprising at least one Treated Distillate Aromatic Extract (TDAE); c) at least one vulcanization system VS; d) at least one filler G; e) at least one blowing agent BA selected from the list of bicarbonate, polycarboxylic acids and salts of polycarboxylic acids. The thermally expandable rubber composition provides good adhesion on metal substrates after curing at curing-temperatures around 160° C.Type: ApplicationFiled: September 2, 2019Publication date: July 29, 2021Applicant: SIKA TECHNOLOGY AGInventors: Cornelia BÖFER, Michael GUTGSELL
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Publication number: 20210230404Abstract: A thermally expandable rubber composition, including a) at least one solid rubber A from the group consisting of styrene-butadiene rubber, cis-1,4-polybutadiene, synthetic isoprene rubber, natural rubber, ethylene-propylene-diene rubber (EPDM), nitrile rubber, butyl rubber and acrylic rubber; b) processing oil PO, comprising at least one Treated Distillate Aromatic Extract (TDAE); c) at least one vulcanization system VS; d) at least one filler G; e) at least one blowing agent BA. The thermally expandable rubber composition provides low VOC content and exhibits good applicability as well as other material properties after full curing, especially above 200° C. for 40 min, especially good adhesion on substrates, especially metal substrates.Type: ApplicationFiled: September 2, 2019Publication date: July 29, 2021Applicant: SIKA TECHNOLOGY AGInventors: Christian EYHOLZER, Goran CAKIC, Cornelia BÖFER, Michael GUTGSELL
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Patent number: 11072561Abstract: A composition includes: an ethoxylated fatty alcohol having from 8 to 22 carbon atoms and having an ethoxylation level of from 1 to 10 moles of ethylene oxide per mole of fatty alcohol, —an alkanolamine or a morpholine, or its derivatives or mix of them, and a fatty acid. A hydraulic binder includes the composition. A process prevents the formation of a surface film at the surface of hydraulic binders, wherein the composition is added to the dry hydraulic binder. A process for preparing the composition, includes: melting the ethoxylated fatty alcohol and heating it at a temperature above its melting point, adding water to the melted ethoxylated fatty alcohol and mixing, adding fatty acid to the mixture and mixing, adding alkanolamine or morpholine, or its derivative or mix of them to the mixture obtained and mixing, and adding water.Type: GrantFiled: May 25, 2016Date of Patent: July 27, 2021Assignee: SIKA TECHNOLOGY AGInventors: Jérôme Rolland, Oliver Herr, Joachim Monge, Justine Nigaud, Jean-Jacques Ouallet
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Publication number: 20210221444Abstract: A device for reinforcing, sealing, or damping a structural element in a motor vehicle including a carrier, having a first lateral region and a second lateral region, and a first adhesive for connecting the carrier to the structural element. The first adhesive is arranged on the first lateral region of the carrier. The second lateral region of the carrier is designed in such a way that a second adhesive, which can be pumped or extruded onto the structural element or onto the second lateral region of the carrier, is supported by the second lateral region of the carrier during and/or after its activation.Type: ApplicationFiled: August 27, 2019Publication date: July 22, 2021Applicant: SIKA TECHNOLOGY AGInventors: Henrik LINDGREN, Vincent BELPAIRE
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Publication number: 20210221748Abstract: A two-component composition including: a) a first component A, including: an aqueous dispersion of at least one polymer P1; b) a second component B, including: at least one hydraulic binder H, and at least one functional compound P2; wherein both components A and B are liquid or pasty and both are prepared and stored separately and mixed directly before application; and with the proviso that the functional compound P2 includes functional groups that chemically react with the aqueous dispersion of the first polymer P1 to form cross-linked and/or chain-extended polymers. The composition is highly suitable cementitious adhesive, joint sealant, casting composition, or coating and shows improved mechanical properties, adhesion properties, and resistance as well as minimized plasticizer migration problems.Type: ApplicationFiled: November 20, 2018Publication date: July 22, 2021Applicant: SIKA TECHNOLOGY AGInventors: Steffen MAIER, Michael LANGNER, Sara STAUBER FEDIER
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Patent number: 11066330Abstract: The present invention relates to a copolymer, especially for use as a dispersant for solid particles, in particular for use as dispersant for mineral binder compositions, having a polymer backbone and side chains bonded thereto, comprising at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2, wherein the copolymer has a gradient structure in at least one section A in a direction along the polymer backbone with regard to the ionizable monomer unit M1 and/or with regard to the side chain-bearing monomer unit M2.Type: GrantFiled: December 12, 2019Date of Patent: July 20, 2021Assignee: SIKA TECHNOLOGY AGInventors: Jürg Weidmann, Jörg Zimmermann
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Patent number: 11065849Abstract: The invention is directed to a membrane used in waterproofing and roofing applications, the membrane comprising a barrier layer S1 comprising a thermoplastic polymer component P1 and a contact layer S2 bonded to at least portion of the barrier layer S1, the contact layer S2 comprising a mixture of a solid filler component F and a thermoplastic polymer component P2. The invention is also directed to a method for producing the membrane, a method for waterproofing a substrate, to a waterproofed construction, to a method for sealing a substrate against water penetration and to a sealed construction for sealing a substrate against water penetration.Type: GrantFiled: December 20, 2016Date of Patent: July 20, 2021Assignee: SIKA TECHNOLOGY AGInventors: Herbert Ackermann, Frank Hoefflin, Roman Rohrer, Lisa Gutjahr, Roy Z'Rotz, Simon Schoenbrodt
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Patent number: 11060003Abstract: A water-based dispersion sealant composition, including an aqueous polymer dispersion including water and at least one water-dispersible polymer, at least one polyolefin oligomer, at least one hydrogenated mixture of alkanes, isoalkanes, and/or cycloalkanes with a boiling point of at least 150° C., and optionally at least one plasticizer having at least one ester or ether group, wherein the at least one polyolefin oligomer and the at least one hydrogenated mixture of alkanes, isoalkanes, and/or cycloalkanes with a boiling point of at least 150° C. are liquid at 23° C. and under standard pressure, wherein the at least one polyolefin oligomer is selected from polybutene and/or polyisobutylene, and wherein said at least one water-dispersible polymer is selected from poly(meth)acrylate polymers, styrene-(meth)acrylate copolymers, and vinyl-acetate-(meth)acrylate copolymers.Type: GrantFiled: December 5, 2017Date of Patent: July 13, 2021Assignee: SIKA TECHNOLOGY AGInventors: Steffen Maier, Ukiwo Onuoha
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Patent number: 11053347Abstract: A curing agent for epoxy resins, containing at least one amine adduct of formula (I) which can be obtained as an addition product of a mixture of a primary diamine, a monoalkylated other diamine and a polyepoxide. The curing agent makes it possible to produce low-odor, low-emission epoxy resin products, in particular coatings, which have a surprisingly low viscosity, a high curing rate, a high final hardness, and a surprisingly appealing surface.Type: GrantFiled: March 13, 2018Date of Patent: July 6, 2021Assignee: SIKA TECHNOLOGY AGInventors: Edis Kasemi, Andreas Kramer, Ursula Stadelmann, Urs Burckhardt
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Patent number: 11053346Abstract: An adduct AD obtained from the reaction of at least one novolak glycidyl ether containing an average of 2.5 to 4 epoxy groups per molecule with an amine mixture including bis(6-aminohexyl)amine and at least one amine A1 other than bis(6-aminohexyl)amine that has at least one primary amino group. Preferably, the amine mixture is a technical grade quality of bis(6-aminohexyl)amine that contains 25% to 82% by weight of bis(6-aminohexyl)amine. The adduct AD is preparable in a simple manner and without the use of solvents, and enables low-odor, low-toxicity and low-viscosity hardeners that can be processed and stored even under cold conditions. Epoxy resin compositions cured therewith very rapidly build up high binding forces and high strengths under ambient outdoor temperatures, even on substrates that are difficult to bond.Type: GrantFiled: December 7, 2017Date of Patent: July 6, 2021Assignee: SIKA TECHNOLOGY AGInventor: Ulrich Gerber