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).

  • Publication number: 20210261711
    Abstract: 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: Application
    Filed: May 10, 2021
    Publication date: August 26, 2021
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Jürg WEIDMANN, Fabia ULBER, Jörg ZIMMERMANN
  • Patent number: 11066330
    Abstract: 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: Grant
    Filed: December 12, 2019
    Date of Patent: July 20, 2021
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Jürg Weidmann, Jörg Zimmermann
  • Patent number: 11028213
    Abstract: 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: Grant
    Filed: November 21, 2017
    Date of Patent: June 8, 2021
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Jürg Weidmann, Fabia Ulber, Jörg Zimmermann
  • Patent number: 10988415
    Abstract: 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: Grant
    Filed: September 22, 2016
    Date of Patent: April 27, 2021
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Jürg Weidmann, Christina Hampel, Jörg Zimmermann
  • Patent number: 10981829
    Abstract: 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: Grant
    Filed: September 22, 2016
    Date of Patent: April 20, 2021
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Jürg Weidmann, Lukas Frunz, Jörg Zimmermann, Patrick Juilland
  • Publication number: 20210040000
    Abstract: 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: Application
    Filed: January 22, 2019
    Publication date: February 11, 2021
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Jürg WEIDMANN, Jörg ZIMMERMANN, Fabia ULBER
  • Publication number: 20210024415
    Abstract: A method for producing improved comb polymers having a block or gradient structure. The comb polymers are highly suitable for dispersing fine powder.
    Type: Application
    Filed: May 22, 2019
    Publication date: January 28, 2021
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Jürg WEIDMANN, Markus FRIEDERICH, Christina HAMPEL, Jörg ZIMMERMANN
  • Patent number: 10745322
    Abstract: A copolymer as dispersant in a binder composition comprising an alkaline activating agent, wherein the activating agent is especially suitable for activation of a latently hydraulic and/or pozzolanic binder, wherein the copolymer has a polymer backbone and side chains bonded thereto and comprises at least one ionizable monomer unit M1 and at least one side chain-bearing monomer unit M2, and 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: Grant
    Filed: September 22, 2016
    Date of Patent: August 18, 2020
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Jürg Weidmann, Lukas Frunz, Jörg Zimmermann
  • Patent number: 10717803
    Abstract: A block copolymer, in particular for use as a dispersant for mineral binder compositions, including at least one first block A and at least one second block B, wherein the first block A has a monomer unit M1 and the second block B has a monomer unit M2. To this end a proportion of monomer units M2 which is in any case present in the first block A is less than 25 mol %, in particular less than or equal to 10 mol %, based on all the monomer units M1 in the first block A and a proportion of monomer units M1 which is in any case present in the second block B is less than 25 mol %, in particular less than or equal to 10 mol %, based on all the monomer units M2 in the second block B.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: July 21, 2020
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Jürg Weidmann, Lukas Frunz, Jörg Zimmermann
  • Patent number: 10689303
    Abstract: The present invention relates to admixtures, especially a dispersant for solid particles, in particular a dispersant for mineral binder compositions, comprising: a) a superplasticizer and b) a copolymer 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 nonrandom distribution of the monomer units M1 and/or the monomer units M2 in a direction along the polymer backbone, and wherein the superplasticizer and the copolymer differ from a chemical and/or structural point of view.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: June 23, 2020
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Jürg Weidmann, Lukas Frunz, Jörg Zimmermann
  • Publication number: 20200131089
    Abstract: 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: Application
    Filed: December 12, 2019
    Publication date: April 30, 2020
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Jürg WEIDMANN, Jörg ZIMMERMANN
  • Publication number: 20200071444
    Abstract: 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: Application
    Filed: November 21, 2017
    Publication date: March 5, 2020
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Jürg WEIDMANN, Fabia ULBER, Jörg ZIMMERMANN
  • Patent number: 10562999
    Abstract: A copolymer, in particular a dispersant for solid particles, in particular a dispersant for mineral binder compositions, including a polymer backbone and sidechains bound thereto. Said copolymer includes at least one phosphorus group-carrying monomeric unit M1 and at least one sidechain-carrying monomeric unit M2, the copolymer having, in a direction along the polymer backbone, a non-random distribution of the monomeric units M1 and/or of the monomeric units M2.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: February 18, 2020
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Jürg Weidmann, Lukas Frunz, Joachim Glaus, Jürgen Gresser
  • Patent number: 10550037
    Abstract: 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: Grant
    Filed: September 22, 2016
    Date of Patent: February 4, 2020
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Jürg Weidmann, Jörg Zimmermann
  • Publication number: 20190300431
    Abstract: 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: Application
    Filed: September 22, 2016
    Publication date: October 3, 2019
    Applicant: Sika Technology AG
    Inventors: Jürg WEIDMANN, Christina HAMPEL, Jörg ZIMMERMANN
  • Publication number: 20190233338
    Abstract: The present invention relates to admixtures, especially a dispersant for solid particles, in particular a dispersant for mineral binder compositions, comprising: a) a superplasticizer and b) a copolymer 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 nonrandom distribution of the monomer units M1 and/or the monomer units M2 in a direction along the polymer backbone, and wherein the superplasticizer and the copolymer differ from a chemical and/or structural point of view.
    Type: Application
    Filed: September 22, 2016
    Publication date: August 1, 2019
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Jürg WEIDMANN, Lukas FRUNZ, Jörg ZIMMERMANN
  • Publication number: 20180273668
    Abstract: A copolymer, in particular a dispersant for solid particles, in particular a dispersant for mineral binder compositions, including a polymer backbone and sidechains bound thereto. Said copolymer includes at least one phosphorus group-carrying monomeric unit M1 and at least one sidechain-carrying monomeric unit M2, the copolymer having, in a direction along the polymer backbone, a non-random distribution of the monomeric units M1 and/or of the monomeric units M2.
    Type: Application
    Filed: September 22, 2016
    Publication date: September 27, 2018
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Jürg WEIDMANN, Lukas FRUNZ, Joachim GLAUS, Jürgen GRESSER
  • Publication number: 20180273428
    Abstract: The invention relates to a block copolymer for use as a dispersant for mineral binder compositions, containing an alkali activating agent. Said block copolymer comprises 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: Application
    Filed: September 22, 2016
    Publication date: September 27, 2018
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Jürg WEIDMANN, Lukas FRUNZ, Jörg ZIMMERMANN, Patrick JUILLAND
  • Publication number: 20180265407
    Abstract: 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: Application
    Filed: September 22, 2016
    Publication date: September 20, 2018
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Jürg WEIDMANN, Jörg ZIMMERMANN
  • Publication number: 20180265615
    Abstract: A method for producing a dispersant for solid particles, in particular a dispersant for mineral binder compositions. Ionizable monomers m1 and sidechain-carrying monomers m2 are polymerized to a copolymer, polymerization taking place as a living free radical polymerization.
    Type: Application
    Filed: September 22, 2016
    Publication date: September 20, 2018
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Jürg WEIDMANN, Jörg ZIMMERMANN