Patents by Inventor Guillermo Arens

Guillermo Arens 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).

  • Method for producing polyisocyanates of (cyclo)aliphatic diisocyanates which are flocculation-stable in solvents
    Patent number: 11807709
    Abstract: The present invention relates to a new process for preparing polyisocyanates containing isocyanurate groups and being flocculation-stable in solvents from (cyclo)aliphatic diisocyanates.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: November 7, 2023
    Inventors: Harald Schaefer, Daniel Flojhar, Jens Scheidel, Thomas Genger, Sebastian Emmerling, Matthias Kroner, Guillermo Arens
  • Colour-stable curing compositions containing polyisocyanates of (cyclo)aliphatic diisocyanates
    Patent number: 11001730
    Abstract: The present invention relates to a novel process for preparing isocyanurate-comprising polyisocyanates of (cyclo)aliphatic diisocyanates that are especially stable to color drift in solvents.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: May 11, 2021
    Inventors: Harald Schaefer, Daniel Flojhar, Jens Scheidel, Thomas Genger, Matthias Kroner, Sebastian Emmerling, Guillermo Arens
  • METHOD FOR PRODUCING POLYISOCYANATES OF (CYCLO)ALIPHATIC DIISOCYANATES WHICH ARE FLOCCULATION-STABLE IN SOLVENTS
    Publication number: 20200262968
    Abstract: The present invention relates to a new process for preparing polyisocyanates containing isocyanurate groups and being flocculation-stable in solvents from (cyclo)aliphatic diisocyanates.
    Type: Application
    Filed: October 2, 2017
    Publication date: August 20, 2020
    Applicant: BASF SE
    Inventors: Harald SCHAEFER, Daniel FLOJHAR, Jens SCHEIDEL, Thomas GENGER, Sebastina EMMERLING, Matthias KRONER, Guillermo ARENS
  • COLOUR-STABLE CURING COMPOSITIONS CONTAINING POLYISOCYANATES OF (CYCLO)ALIPHATIC DIISOCYANATES
    Publication number: 20200181449
    Abstract: The present invention relates to a novel process for preparing isocyanurate-comprising polyisocyanates of (cyclo)aliphatic diisocyanates that are especially stable to color drift in solvents.
    Type: Application
    Filed: October 2, 2017
    Publication date: June 11, 2020
    Applicant: BASF SE
    Inventors: Harald SCHAEFER, Daniel FLOJHAR, Jens SCHEIDEL, Thomas GENGER, Matthias KRONER, Sebastian EMMERLING, Guillermo ARENS
  • Method for producing a polymer
    Patent number: 8420751
    Abstract: Provided is a method for performing a polymerization process in a stirred reactor, wherein a critical time window is determined by means of a monitor of at least one polymerization process parameter and an associated process window, and when a critical time window is present, an adaptation of process conditions is made in order to configure the polymerization process to conform to the process window.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: April 16, 2013
    Assignee: BASF SE
    Inventors: Ilshat Gubaydullin, Karl-Heinz Wassmer, Robert Rupaner, Jochen Kessler, Guillermo Arens, Gerald Wildburg, Christian Magin, Wolfgang Huemmer, Lambertus Manders, Rudolf Schuhmacher, Oliver Birkert
  • METHOD FOR PRODUCING A POLYMER
    Publication number: 20120237403
    Abstract: Provided is a method for performing a polymerization process in a stirred reactor, wherein a critical time window is determined by means of a monitor of at least one polymerization process parameter and an associated process window, and when a critical time window is present, an adaptation of process conditions is made in order to configure the polymerization process to conform to the process window.
    Type: Application
    Filed: April 9, 2012
    Publication date: September 20, 2012
    Applicant: BASF SE
    Inventors: Ilshat Gubaydullin, Karl-Heinz Waßmer, Robert Rupaner, Jochen Keßler, Guillermo Arens, Gerald Wildburg, Christian Magin, Wolfgang Hümmer, Lambertus Manders, Rudolf Schuhmacher, Oliver Birkert
  • Method for producing a polymer
    Patent number: 8188197
    Abstract: The present invention relates to a method for performing a polymerization process in a stirred reactor, wherein a critical time window is determined by means of a monitor of at least one polymerization process parameter and an associated process window, and when a critical time window is present, an adaptation of process conditions is made in order to configure the polymerization process to conform to the process window.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: May 29, 2012
    Assignee: BASF SE
    Inventors: Ilshat Gubaydullin, Karl-Heinz Wassmer, Robert Rupaner, Jochen Kessler, Guillermo Arens, Gerald Wildburg, Christian Magin, Wolfgang Huemmer, Lambertus Manders, Rudolf Schuhmacher, Oliver Birkert
  • Aqueous polymer dispersions based on copolymers formed from vinylaromatics and conjugated aliphatic dienes, processes for preparation thereof and use thereof
    Patent number: 8003716
    Abstract: Aqueous polymer dispersions based on copolymers of vinyl aromatics and conjugated aliphatic dienes having a mean particle size of from 80 to 150 nm, obtained by free radical emulsion copolymerization of (a) from 19.9 to 80 parts by weight of at least one vinyl aromatic compound, (b) from 19.9 to 80 parts by weight of at least one conjugated aliphatic diene, (c) from 0.1 to 10 parts by weight of at least one ethylenically unsaturated acid, and (d) from 0 to 20 parts by weight of at least one other monoethylenically Unsaturated monomer, the sum of the parts by weight of the monomers (a), (b), (c) and (d) always being 100, in an aqueous medium in the presence of at least one degraded starch having an intrinsic viscosity ?i of less than 0.07 dl/g with the use of at least 0.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: August 23, 2011
    Assignee: BASF SE
    Inventors: Elitsa Evstatieva, Juergen Schmidt-Thuemmes, Dirk Lawrenz, Johannes Jan-Bessel Minderhoud, Guillermo Arens
  • METHOD FOR PRODUCING A POLYMER
    Publication number: 20100261853
    Abstract: The present invention relates to a method for performing a polymerization process in a stirred reactor, wherein a critical time window is determined by means of a monitor of at least one polymerization process parameter and an associated process window, and when a critical time window is present, an adaptation of process conditions is made in order to configure the polymerization process to conform to the process window.
    Type: Application
    Filed: September 8, 2008
    Publication date: October 14, 2010
    Applicant: BASF SE
    Inventors: Ilshat Gubaydullin, Karl-Heinz Wassmer, Robert Rupaner, Jochen Kessler, Guillermo Arens, Gerald Wildburg, Christian Magin, Wolfgang Huemmer, Lambertus Manders, Rudolf Schuhmacher, Oliver Birkert
  • AQUEOUS POLYMER DISPERSIONS BASED ON COPOLYMERS FORMED FROM VINYLAROMATICS AND CONJUGATED ALIPHATIC DIENES, PROCESSES FOR PREPARATION THEREOF AND USE THEREOF
    Publication number: 20100204382
    Abstract: Aqueous polymer dispersions based on copolymers of vinyl aromatics and conjugated aliphatic dienes having a mean particle size of from 80 to 150 nm, obtainable by free radical emulsion copolymerization of (a) from 19.9 to 80 parts by weight of at least one vinyl aromatic compound, (b) from 19.9 to 80 parts by weight of at least one conjugated aliphatic diene, (c) from 0.1 to 10 parts by weight of at least one ethylenically unsaturated acid and (d) from 0 to 20 parts by weight of at least one other monoethylenically unsaturated monomer, the sum of the parts by weight of the monomers (a), (b), (c) and (d) always being 100, in an aqueous medium in the presence of at least one degraded starch having an intrinsic viscosity of less than 0.07 dl/g with the use of at least 0.
    Type: Application
    Filed: October 6, 2008
    Publication date: August 12, 2010
    Applicant: BASF SE
    Inventors: Elitsa Evstatieva, Juergen Schmidt-Thuemmes, Dirk Lawrenz, Johannes Jan-Bessel Minderhoud, Guillermo Arens