Patents by Inventor Jürg WEIDMANN
Jürg WEIDMANN 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).
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Patent number: 12378159Abstract: The invention relates to the use of branched copolymers as dispersants of mineral binders, wherein the copolymers are formed from (1) at least one olefinically unsaturated carboxylic acid monomer (2) at least one olefinically unsaturated macromonomer of the general structure (I) where R1 is an olefinically unsaturated radical which has 2-10 carbon atoms and may optionally be substituted by oxygen and/or nitrogen, preferably vinyl, allyl, methallyl, vinyloxybutyl, isoprenyl, acryloyl and/or methacryloyl, X=O or NH, A is in each case independently C1-C10 alkylene, preferably ethylene, propylene and/or butylene, R2=C1-C16 alkyl, B is in each case independently C1-C10 alkylene, preferably ethylene, propylene and/or butylene, m is in each case independently an integer in the range of 0-350, preferably 2-200, more preferably 5-150, especially 7-30, n is an integer in the range of 0-100, preferably 1-100, more preferably 2-75, most preferably 5-55, p is 0 or 1, preferably 0, o is an integer in the rangeType: GrantFiled: November 25, 2020Date of Patent: August 5, 2025Assignee: SIKA TECHNOLOGY AGInventors: Jürg Weidmann, Jörg Zimmermann, Lukas Frunz
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Publication number: 20250214897Abstract: Copolymers having or consisting of: monomeric units of the general formula (I), monomeric units of the general formula (II), and monomeric units of the general formula (III). The present invention also relates to the use of such copolymers as plasticizers for mineral binder compositions.Type: ApplicationFiled: June 8, 2023Publication date: July 3, 2025Applicant: SIKA TECHNOLOGY AGInventors: Joachim GLAUS, Jürg WEIDMANN, Jörg ZIMMERMANN
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Patent number: 12338175Abstract: A method for inerting a swellable clay and/or for reducing or inhibiting adverse effects of swellable clays on the effectiveness of dispersants in mineral binder compositions, includes adding a comb polymer to a mineral binder composition. The comb polymer includes: at least one poly(alkylene oxide) side chain-bearing monomer unit without ionic groups, optionally at least one cationic monomer unit, optionally at least one anionic monomer unit, and optionally, at least one non-ionic monomer unit.Type: GrantFiled: February 7, 2024Date of Patent: June 24, 2025Assignee: SIKA TECHNOLOGY AGInventors: Ulf Velten, Jürg Weidmann, Lukas Frunz, Patrick Juilland
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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: 12129324Abstract: 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: GrantFiled: May 10, 2021Date of Patent: October 29, 2024Assignee: SIKA TECHNOLOGY AGInventors: Jürg Weidmann, Fabia Ulber, Jörg Zimmermann
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Publication number: 20240246858Abstract: A method for inerting a swellable clay and/or for reducing or inhibiting adverse effects of swellable clays on the effectiveness of dispersants in mineral binder compositions, includes adding a comb polymer to a mineral binder composition. The comb polymer includes: at least one poly(alkylene oxide) side chain-bearing monomer unit without ionic groups, optionally at least one cationic monomer unit, optionally at least one anionic monomer unit, and optionally, at least one non-ionic monomer unit.Type: ApplicationFiled: February 7, 2024Publication date: July 25, 2024Applicant: Sika Technology AGInventors: Ulf VELTEN, Jürg WEIDMANN, Lukas FRUNZ, Patrick JUILLAND
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Patent number: 12017957Abstract: A method includes adding (i) a comb polymer and (ii) a plasticizer to a mineral binder composition comprising swellable clays. The comb polymer includes: at least one poly(alkylene oxide) side chain-bearing monomer unit without ionic groups, optionally at least one cationic monomer unit, optionally at least one anionic monomer unit, and optionally, at least one non-ionic monomer unit, wherein a molar ratio of the cationic monomer units to the side chain-bearing monomer units is equal to or less than 10, a molar ratio of the anionic monomer units to the side chain-bearing monomer units is less than 1, and a molar ratio of the non-ionic monomer units to the side chain-bearing monomer units is less than 5.Type: GrantFiled: November 18, 2022Date of Patent: June 25, 2024Assignee: SIKA TECHNOLOGY AGInventors: Ulf Velten, Jürg Weidmann, Lukas Frunz, Patrick Juilland
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Publication number: 20240059612Abstract: The invention relates to the use of branched copolymers as dispersants of mineral binders, wherein the copolymers are formed from (1) at least one olefinically unsaturated carboxylic acid monomer (2) at least one olefinically unsaturated macromonomer of the general structure (I) where R1 is an olefinically unsaturated radical which has 2-10 carbon atoms and may optionally be substituted by oxygen and/or nitrogen, preferably vinyl, allyl, methallyl, vinyloxybutyl, isoprenyl, acryloyl and/or methacryloyl, X=O or NH, A is in each case independently C1-C10 alkylene, preferably ethylene, propylene and/or butylene, R2=C1-C16 alkyl, B is in each case independently C1-C10 alkylene, preferably ethylene, propylene and/or butylene, m is in each case independently an integer in the range of 0-350, preferably 2-200, more preferably 5-150, especially 7-30, n is an integer in the range of 0-100, preferably 1-100, more preferably 2-75, most preferably 5-55, p is 0 or 1, preferably 0, o is an integer in the rangeType: ApplicationFiled: November 25, 2020Publication date: February 22, 2024Applicant: SIKA TECHNOLOGY AGInventors: Jürg WEIDMANN, Jörg ZIMMERMANN, Lukas FRUNZ
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Publication number: 20230374188Abstract: A process for the reduction of the content of a compound I of general formula (II) where R1 is hydrogen or methyl, each R2, independently from each other, is hydrogen or methyl, R3 is hydrogen or an aliphatic or cycloaliphatic or aromatic hydrocarbon with 1-8 carbon atoms, AO is a C2-C12 oxyalkylene group, x=0 or 1, and n=2-350, from a mixture including or consisting of a compound I of general formula (II) and an alkoxylated alcohol A of general formula (I) where R1, R2, R3, AO, x, and n are as described in general formula (II) above, characterized in that the process includes a treatment of the mixture including or consisting of a compound I and an alkoxylated alcohol A with an acid. Also, the use of the alkoxylated alcohols A for the production of polycarboxylate ethers.Type: ApplicationFiled: December 2, 2021Publication date: November 23, 2023Applicant: SIKA TECHNOLOGY AGInventors: Jürg WEIDMANN, Jörg ZIMMERMANN, Joachim GLAUS
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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: 20230101651Abstract: The use of branched copolymers of the general structure (I) as additives for increasing the flow rate and for reducing the viscosity of mineral binder compositions.Type: ApplicationFiled: November 25, 2020Publication date: March 30, 2023Applicant: SIKA TECHNOLOGY AGInventors: Jürg WEIDMANN, Jörg ZIMMERMANN, Lukas FRUNZ
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Publication number: 20230087362Abstract: A method includes adding (i) a comb polymer and (ii) a plasticizer to a mineral binder composition comprising swellable clays. The comb polymer includes: at least one poly(alkylene oxide) side chain-bearing monomer unit without ionic groups, optionally at least one cationic monomer unit, optionally at least one anionic monomer unit, and optionally, at least one non-ionic monomer unit, wherein a molar ratio of the cationic monomer units to the side chain-bearing monomer units is equal to or less than 10, a molar ratio of the anionic monomer units to the side chain-bearing monomer units is less than 1, and a molar ratio of the non-ionic monomer units to the side chain-bearing monomer units is less than 5.Type: ApplicationFiled: November 18, 2022Publication date: March 23, 2023Applicant: SIKA TECHNOLOGY AGInventors: Ulf VELTEN, Jürg WEIDMANN, Lukas FRUNZ, Patrick JUILLAND
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Publication number: 20220388904Abstract: Use of a comb polymer as an inerting agent for non-swelling layer-silicates, the comb polymer including: 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 0.1, preferably less than 0.05, 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, and c) 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 7, preferably equal to or less than 3.Type: ApplicationFiled: September 3, 2020Publication date: December 8, 2022Applicant: SIKA TECHNOLOGY AGInventors: Ulf VELTEN, Annette SÜSSENBERGER, Jürg WEIDMANN, Lukas FRUNZ, Patrick JUILLAND
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Publication number: 20220033306Abstract: A comb polymer, in particular for use as a clay-inerting agent, including: 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, c) optionally at least one anionic monomer unit MA, d) optionally, at least one non-ionic monomer unit M3, 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, 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, and the molar ratio of the non-ionic monomer units M3 to the side chain-bearing monomer units M1 is less than 5.Type: ApplicationFiled: October 1, 2019Publication date: February 3, 2022Applicant: SIKA TECHNOLOGY AGInventors: Ulf VELTEN, Jürg WEIDMANN, Lukas FRUNZ, Patrick JUILLAND
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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: 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: 11028213Abstract: The present invention relates to processes for preparing a copolymer, especially a dispersant for solid particles, in particular a dispersant for mineral binder compositions, wherein ionizable monomers m1 and side chain-bearing monomers m2 are polymerized by nitroxide-mediated solution polymerization to give a copolymer, wherein the polymerization is conducted in the presence of an agent comprising a carboxyl group-bearing and phosphated alkoxy amine.Type: GrantFiled: November 21, 2017Date of Patent: June 8, 2021Assignee: SIKA TECHNOLOGY AGInventors: Jürg Weidmann, Fabia Ulber, Jörg Zimmermann
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Patent number: 10988415Abstract: The present invention relates to the use of a copolymer as a dispersant for binder compositions based on calcium sulfate, the copolymer having a polymer backbone and sidechains bound thereto, and at least one ionizable monomeric unit M1 and at least one sidechain-carrying monomeric unit M2, characterized in that the copolymer has, in a direction along the polymer backbone, a non-random distribution of the monomeric units M1 and/or of the monomeric units M2.Type: GrantFiled: September 22, 2016Date of Patent: April 27, 2021Assignee: SIKA TECHNOLOGY AGInventors: Jürg Weidmann, Christina Hampel, Jörg Zimmermann
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Patent number: 10981829Abstract: A block copolymer for use as a dispersant for mineral binder compositions, containing an alkali activating agent. The block copolymer includes at least one first block A and at least one second block B, the first block A containing a monomeric unit M1 and the second block B containing a monomeric unit M2. A proportion of monomeric units M2, if any, in the first block A is less than 25 mol %, in particular less than or equal to 10 mol %, relative to all the monomeric units M1 in the first block A, and a proportion of monomeric units M1, if any, in the second block B is less than 25 mol %, in particular less than or equal to 10 mol %, relative to all the monomeric units M2 in the second block B.Type: GrantFiled: September 22, 2016Date of Patent: April 20, 2021Assignee: SIKA TECHNOLOGY AGInventors: Jürg Weidmann, Lukas Frunz, Jörg Zimmermann, Patrick Juilland
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Publication number: 20210040000Abstract: Methods of using a comb polymer K for reducing the mixing time of a mineral binder composition with water, where the comb polymer K has a polymer backbone and side chains, and the comb polymer K includes at least one monomeric unit M1, including acid groups, and at least one monomeric unit M2, including side chains, the monomeric units M1 and M2 being arranged in a non-statistical sequence along the polymer backbone.Type: ApplicationFiled: January 22, 2019Publication date: February 11, 2021Applicant: SIKA TECHNOLOGY AGInventors: Jürg WEIDMANN, Jörg ZIMMERMANN, Fabia ULBER