Patents by Inventor Fabien Choffat
Fabien Choffat has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20230406993Abstract: The present invention relates to a polyol composition consisting of a first component and a second component, wherein the first component contains a polyol having had OH functionality in the range from 1.5 to 4 and an average molecular weight in the range from 250 to 15'000 g/mol, a diol having at least two hydroxyl groups joined via a C2 to C9 carbon chain, and a compound having at least one thiol group. In addition, one of the two components additionally comprises at least one metal catalyst for the reaction of hydroxyl groups and isocyanate groups which is capable of forming thio complexes, and where the molar ratio of all NCO groups of the polyisocyanates I to all OH groups of the polyols=0.9:1-1.4:1, especially 1.05:1-1.Type: ApplicationFiled: February 1, 2022Publication date: December 21, 2023Applicant: SIKA TECHNOLOGY AGInventors: Semjon ROTH, Stefan MEISTER, Antonio CORSARO, Fabien CHOFFAT
-
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
-
Publication number: 20220145144Abstract: A composition including: —at least one silane group-containing polymer with a silicon content ranging from 0.6 to 2 wt. %, obtained by reacting at least one isocyanate group-containing polymer and at least one amino-, mercapto-, or hydroxysilane, —at least one liquid epoxy resin, and—at least one polyamine with at least three amine hydrogens which are reactive towards epoxy groups. The composition facilitates adhesives, coatings, or sealing compounds with a good storage stability, a fast curing time, even in the event of moisture or humidity, a surprisingly high degree of strength while having a high degree of elasticity, a high degree of resistance against further tearing, a high degree of resistance in particular against glycol/water mixtures, and a high degree of adhesion to many substrates. When used on metals such as steel or aluminum, the composition protects same against corrosion.Type: ApplicationFiled: May 28, 2020Publication date: May 12, 2022Applicant: SIKA TECHNOLOGY AGInventors: Klaas MENNECKE, Fabien CHOFFAT, Ursula STADELMANN
-
Publication number: 20220073688Abstract: 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: ApplicationFiled: March 19, 2020Publication date: March 10, 2022Applicant: SIKA TECHNOLOGY AGInventors: Marcel OERTLI, Robert ROSKAMP, Helena WALLIMANN, Christoph FÄH, Fabien CHOFFAT
-
Publication number: 20220073738Abstract: A moisture-curable composition, including between 0.6 and 15.0 wt.-% of at least one organic polymer containing reactive silane groups, between 70 and 95 wt.-% of at least one filler, at least one dispersion additive, optionally at least one catalyst for the curing of silane-functional polymers and up to 10 wt.-% of at least one plasticizer, characterized in that said filler is selected from the list consisting of aluminium oxide, aluminium hydroxide, boron nitride, aluminium nitride, zinc oxide, silver, copper, aluminium, chalk, aluminosilicate, graphite, and any mixture of these fillers; with the proviso that the amount of chalk in the filler does not exceed 25 wt.-% of the total amount of filler. The moisture-curable composition shows excellent thermal conductivity and is particularly suitable as adhesive, gap filler, or sealant suitable for e-coat applications and battery bonding especially in electric automobile assembly.Type: ApplicationFiled: February 12, 2020Publication date: March 10, 2022Applicant: SIKA TECHNOLOGY AGInventors: Klaas MENNECKE, David HOFSTETTER, Fabien CHOFFAT
-
Publication number: 20220025101Abstract: A polyurethane composition consisting of a first component and a second component, wherein the first component contains a polyol having an OH functionality in the range from 1.5 to 4 and an average molecular weight in the range from 250 to 15 000 g/mol, a diol having two hydroxyl groups joined via a C2 to C9 carbon chain, and a compound having at least one thiol group. In addition, one of the two components additionally contains 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 NCO groups in the polyisocyanurates to all OH groups in the polyols is 0.9:1-1.2:1, and the polyurethane composition, directly after mixing of the components at 23° C., is free-flowing, and has a viscosity of <5000 Pa·s at a shear rate of 0.01 s?1.Type: ApplicationFiled: December 18, 2019Publication date: January 27, 2022Applicant: SIKA TECHNOLOGY AGInventors: Antonio CORSARO, Fabien CHOFFAT
-
Patent number: 9994744Abstract: The present invention provides a moisture-curing sealant comprising a) at least one silane-functional polymer and b) at least one catalyst for the crosslinking of the silane-functional polymer, said sealant being free of organotin compounds and having, in the cured state, a secant modulus at 100% elongation and 23° C., determined to ISO 8339, of less than 0.4 MPa and a resilience at 100% elongation, determined to ISO 7389, of greater than 70%. The sealant is especially suitable as a construction sealant of the 25LM class according to DIN EN ISO 11600, especially as a facade sealant, or as a sealant according to ASTM C719 Class 50.Type: GrantFiled: June 3, 2015Date of Patent: June 12, 2018Assignee: SIKA TECHNOLOGY AGInventor: Fabien Choffat
-
Patent number: 9822279Abstract: The invention relates to a two-component composition, including a component A, which includes at least one silane-functional polymer and at least one hardener or accelerator for epoxy resins, and a component B, which includes at least one aqueous emulsion of at least one epoxy resin. Two-component compositions according to the invention are suitable as adhesives, sealants or coatings.Type: GrantFiled: August 24, 2012Date of Patent: November 21, 2017Assignee: SIKA TECHNOLOGY AGInventors: Urs Burckhardt, Fabien Choffat, Daniele Rutz, Steffen Kelch, Ulrich Wolf
-
Publication number: 20170101564Abstract: The present invention provides a moisture-curing sealant comprising a) at least one silane-functional polymer and b) at least one catalyst for the crosslinking of the silane-functional polymer, said sealant being free of organotin compounds and having, in the cured state, a secant modulus at 100% elongation and 23° C., determined to ISO 8339, of less than 0.4 MPa and a resilience at 100% elongation, determined to ISO 7389, of greater than 70%. The sealant is especially suitable as a construction sealant of the 25LM class according to DIN EN ISO 11600, especially as a facade sealant, or as a sealant according to ASTM C719 Class 50.Type: ApplicationFiled: June 3, 2015Publication date: April 13, 2017Inventor: Fabien CHOFFAT
-
Publication number: 20150166859Abstract: A moisture-cure composition is described that includes a) at least one silane-functional polymer P; b) at least one catalyst for cross-linking of silane functional polymers; and c) at least 65% w/w of at least one filler, wherein the composition in the fully cured state has a Shore A hardness of ?60, determined in accordance with DIN 53505, and prior to curing has an extrusion pressure of ?1000 N.Type: ApplicationFiled: July 12, 2013Publication date: June 18, 2015Inventors: Fabien Choffat, Manuel Nestler
-
Publication number: 20150141585Abstract: The invention relates to a composition including a) at least one silane-functional polymer P having alkoxy end groups, which are not methoxy groups; b) at least one catalyst for the cross-linking of silane-functional polymers, selected from the group comprising an organotitanate, organozirconate and organoaluminate; c) at least one compound having at least one amidino group. Such compositions are suitable as adhesives, sealants and coatings and have the advantage that the compositions are substantially free from tin or organic tin compounds and do not split off methanol during curing.Type: ApplicationFiled: May 23, 2013Publication date: May 21, 2015Inventors: Fabien Choffat, Manuel Nestler
-
Publication number: 20140179830Abstract: The invention relates to a two-component composition, including a component A, which includes at least one silane-functional polymer and at least one hardener or accelerator for epoxy resins, and a component B, which includes at least one aqueous emulsion of at least one epoxy resin. Two-component compositions according to the invention are suitable as adhesives, sealants or coatings.Type: ApplicationFiled: August 24, 2012Publication date: June 26, 2014Applicant: SIKA TECHNOLOGY AGInventors: Urs Burckhardt, Fabien Choffat, Daniele Rutz, Steffen Kelch, Ulrich Wolf
-
Publication number: 20120168080Abstract: A composition, including a) at least one silane-functional polymer P; and b) at least one alkyltrialkoxysilane of the formula (I): R2—Si—(OR1)3, where R1 is a linear or branched univalent hydrocarbon group having from 1 to 12 carbon atoms, which optionally includes one or more C—C multiple bonds and/or optionally cycloaliphatic and/or aromatic groups; and R2 is a branched hydrocarbon group having from 6 to 10 carbon atoms. In the cured state, compositions have good mechanical properties and good adhesion properties, and exhibit improved extensibility and a low modulus of elasticity.Type: ApplicationFiled: February 24, 2012Publication date: July 5, 2012Applicant: Sika Technology AGInventors: Fabien CHOFFAT, Sara Fedier
-
Publication number: 20110306723Abstract: The present disclosure relates to novel polymers that are suitable for use in moisture-curing compositions based on silane functional polyurethane polymers. These compositions are used, for example, as adhesives, sealing materials or coatings.Type: ApplicationFiled: February 18, 2010Publication date: December 15, 2011Applicant: SIKA TECHNOLOGY AGInventor: Fabien Choffat