Patents by Inventor Sven Meyer-Ahrens

Sven Meyer-Ahrens 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: 20220204681
    Abstract: The invention relates to a method for producing soft polyurethane foam obtained by reacting a composition containing a component A1 containing at least one filled polyol, a component A2 containing compounds reactive with isocyanates and having a hydroxyl value of ?20 to <100 mg KOH/g, the component A2 not containing any filled polyol, a component A3 containing water and/or at least one physical blowing agent, a component A4 containing auxiliary agents and additives, and a component B containing di- and/or polyisocyanates, characterized in that the reaction occurs in the presence of 0.5 to 3 parts by weight of an organic urea derivative as component C, which is obtained by reacting urea with a difunctional amine having a number-average molecular weight of 200 to 1000 g/mol. The invention also relates to a soft polyurethane foam obtainable by the method.
    Type: Application
    Filed: May 7, 2020
    Publication date: June 30, 2022
    Inventors: Matthaeus Gossner, Peter Haas, Michael Schedler, Sven Meyer-Ahrens, Lutz Brassat
  • Patent number: 11192991
    Abstract: The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: December 7, 2021
    Assignee: Covestro Deutschland AG
    Inventors: Sven Meyer-Ahrens, Stephan Reiter, Engin Cavlan, Matthäus Gossner
  • Publication number: 20200140641
    Abstract: The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.
    Type: Application
    Filed: January 6, 2020
    Publication date: May 7, 2020
    Inventors: Sven Meyer-Ahrens, Stephan Reiter, Engin Cavlan, Matthäus Gossner
  • Patent number: 10563032
    Abstract: The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: February 18, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Sven Meyer-Ahrens, Stephan Reiter, Engin Cavlan, Matthäus Gossner
  • Publication number: 20190153184
    Abstract: The present invention relates to a process for producing polyurethane foams, preferably moulded flexible polyurethane foams, by reacting an isocyanate component which is a mixture obtained in the production of tolylene diisocyanate as a bottoms residue, and at least one further isocyanate component with a component reactive toward isocyanates. The invention further relates to polyurethane foams produced by the process according to the invention and to the use thereof.
    Type: Application
    Filed: August 5, 2016
    Publication date: May 23, 2019
    Inventors: Sven MEYER-AHRENS, Tim LODDENKEMPER, Chenxi ZHANG, Liqiang LI
  • Publication number: 20170306122
    Abstract: The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.
    Type: Application
    Filed: November 18, 2015
    Publication date: October 26, 2017
    Inventors: Sven Meyer-Ahrens, Stephan Reiter, Engin Cavlan, Matthäus Gossner
  • Patent number: 9701804
    Abstract: The present invention relates to a method for producing flexible polyurethane foams, wherein an isocyanate component (component B) which comprises fatty acid derivatives comprising hydroxyl groups is used as starting substance. The flexible polyurethane foams according to the invention have a bulk density according to DIN EN ISO 3386-1-98 in the range of ?10 kg/m3 to ?150 kg/m3, preferably ?20 kg/m3 to ?70 kg/m3, and in general their compressive strength according to DIN EN ISO 3386-1-98 is in the range of ?0.5 kPa to ?20 kPa (at 40% deformation and 4th cycle). The invention also provides an NCO-terminated prepolymer comprising urethane groups obtainable by reaction of one or more polyisocyanates (B1) with one or more fatty acid derivatives comprising hydroxyl groups (B2).
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: July 11, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Norbert Hahn, Sven Meyer-Ahrens, Gundolf Jacobs, Bernd Dohmen
  • Publication number: 20160257776
    Abstract: The present invention relates to a method for producing flexible polyurethane foams, wherein an isocyanate component (component B) is used which comprises polyether carbonate polyol, and to the isocyanate component itself. The invention also provides an NCO-terminated, urethane group-comprising prepolymer obtainable by reaction of one or more polyisocyanates (B1) with one or more polyether carbonate polyols.
    Type: Application
    Filed: May 16, 2016
    Publication date: September 8, 2016
    Inventors: Gundolf Jacobs, Sven Meyer-Ahrens, Bert klesczewski, Angelika Schultz
  • Publication number: 20150336306
    Abstract: The invention relates to a method for producing flexible moulded polyurethane foams (flexible moulded PU foams) with horizontally disposed zones of different hardness, the method being implemented in such a way that at least two fluid reaction mixtures, forming foams with different hardnesses, are introduced in succession in horizontal disposition, in layer form, into the moulding cavity, with at least one fluid reaction mixture being freely foamed, before at least one further foam-forming fluid reaction mixture is introduced into the moulding cavity.
    Type: Application
    Filed: November 18, 2013
    Publication date: November 26, 2015
    Inventors: Norbert HAHN, Sven MEYER-AHRENS, Gundolf JACOBS, Dirk LOEHR, Dietmar CZYLWIK
  • Publication number: 20150299373
    Abstract: The present invention relates to a process for the production of flexible polyurethane foams, wherein there is used as starting material a polyester polyol component which is composed of at least two dicarboxylic acids.
    Type: Application
    Filed: October 23, 2013
    Publication date: October 22, 2015
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Hartmut NEFZGER, Bert KLESCZEWSKI, Sven MEYER-AHRENS, Harald KNAUP
  • Publication number: 20150141542
    Abstract: The present invention provides a method for producing flame-retardant polyurethane foams, the resulting flame-retardant polyurethane foams having particularly low densities.
    Type: Application
    Filed: May 17, 2013
    Publication date: May 21, 2015
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Sven Meyer-Ahrens, Stefan Lindner, Bert Klesczewski
  • Publication number: 20140066535
    Abstract: The present invention relates to a method for producing flexible polyurethane foams, wherein an isocyanate component (component B) is used which comprises polyether carbonate polyol, and to the isocyanate component itself. The invention also provides an NCO-terminated, urethane group-comprising prepolymer obtainable by reaction of one or more polyisocyanates (B1) with one or more polyether carbonate polyols.
    Type: Application
    Filed: March 23, 2012
    Publication date: March 6, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Gundolf Jacobs, Sven Meyer-Ahrens, Bert Klesczewski, Angelika Schulz
  • Publication number: 20130345330
    Abstract: A process for the preparation of polyricinoleic acid esters comprising the step of reaction of ricinoleic acid with an alcohol component which comprises mono- and/or polyfunctional alcohols having a molecular weight of ?32 g/mol to ?40 g/mol, wherein the reaction is carried out at least partly in the presence of a catalyst. The amount of catalyst, based on the total weight of the ricinoleic acid and the alcohol component, is in a range of from ?10 ppm to ?100 ppm. The reaction is ended when the acid number of the reaction product obtained is ?5 mg of KOH/g to ?100 mg of KOH/g. The invention furthermore relates to a polyurethane polymer, in particular a flexible polyurethane foam, which is obtainable using these polyricinoleic acid esters.
    Type: Application
    Filed: November 18, 2011
    Publication date: December 26, 2013
    Applicant: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Hartmut Nefzger, Erika Bauer, Bert Klesczewski, Jüergen Schlossmacher, Sven Meyer-Ahrens, Manfred Schmidt
  • Publication number: 20130289150
    Abstract: A viscoelastic foam is produced by reacting (a) an isocyanate component that includes at least 25% by weight of diphenylmethane diisocyanate having a monomeric content of from 50 to 90% by weight, (b) an isocyanate-reactive component, (c) at least one catalyst, (d) at least one surface active agent, and (e) liquid carbon dioxide. These foams are characterized by a ball rebound of less than 20%. Particularly preferred foams are characterized by a 95% height recovery time greater than 4 seconds.
    Type: Application
    Filed: April 26, 2012
    Publication date: October 31, 2013
    Applicants: Bayer MaterialScience AG, Bayer MaterialScience LLC
    Inventors: Stanley L. Hager, Susan McVey, Glenn Dephillipo, Matthaeus Gossner, Manfred Naujoks, Sven Meyer-Ahrens, Alan A.E. Marcinkowsky
  • Publication number: 20130261203
    Abstract: The present invention relates to a method for producing flexible polyurethane foams, wherein an isocyanate component (component B) which comprises fatty acid derivatives comprising hydroxyl groups is used as starting substance. The flexible polyurethane foams according to the invention have a bulk density according to DIN EN ISO 3386-1-98 in the range of ?10 kg/m3 to ?150 kg/m3, preferably ?20 kg/m3 to ?70 kg/m3, and in general their compressive strength according to DIN EN ISO 3386-1-98 is in the range of ?0.5 kPa to ?20 kPa (at 40% deformation and 4th cycle). The invention also provides an NCO-terminated prepolymer comprising urethane groups obtainable by reaction of one or more polyisocyanates (B1) with one or more fatty acid derivatives comprising hydroxyl groups (B2).
    Type: Application
    Filed: November 18, 2011
    Publication date: October 3, 2013
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Norbert Hahn, Sven Meyer-Ahrens, Gundolf Jacobs, Bernd Dohmen
  • Publication number: 20130237624
    Abstract: The present invention relates to a method for producing flexible polyurethane foams, wherein a polyol component which comprises polyricinoleic acid esters is used as starting substance. The flexible polyurethane foams according to the invention have a bulk density according to DIN EN ISO 3386-1-98 in the range of ?10 kg/m3 to ?150 kg/m3, preferably ?20 kg/m3 to ?70 kg/m3, and in general their compressive strength according to DIN EN ISO 3386-1-98 is in the range of ?0.5 kPa to ?20 kPa (at 40% deformation and 4th cycle). The polyricinoleic acid esters are obtainable by the reaction of ricinoleic acid with an alcohol component which comprises mono- and/or polyhydric alcohols with a molecular mass of ?32 g/mol to ?400 g/mol, the reaction being carried out at least in part in the presence of a catalyst.
    Type: Application
    Filed: November 18, 2011
    Publication date: September 12, 2013
    Applicant: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Bert Klesczewski, Gundolf Jacobs, Sven Meyer-Ahrens, Hartmut Nefzger
  • Patent number: 8323788
    Abstract: The invention relates to a highly flexible sheet composite material comprising a block flexible foam and a layer of whipped foam made of polyurethane-based dispersions two-dimensionally bonded thereto, a process for preparing such a composite material, and the use thereof.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: December 4, 2012
    Assignee: Bayer MaterialScience AG
    Inventors: Sven Meyer-Ahrens, Andrea Maier-Richter, Manfred Naujoks, Thomas Michaelis, Semka Muratovic
  • Patent number: 8318823
    Abstract: The invention relates to a polyether polyol composition for the preparation of polyurethane foams, comprising: (a) a polyether polyol having a hydroxyl functionality of 2, an OH number within a range of from 50 to 65 mg of KOH/g and a proportion of primary hydroxyl groups within a range of from 40 to 80%, based on the total number of primary and secondary hydroxyl groups, having a PO content of from 45 to 55% by weight and an EO content of from 40 to 55% by weight; (b) a dispersion of a polymer in a polyether polyol, wherein the OH number of the dispersion is within a range of from 10 to 30 mg of KOH/g and the polyether polyol has a hydroxyl functionality of 3, a proportion of primary hydroxyl groups within a range of from 70 to 90%, based on the total number of primary and secondary hydroxyl groups, a PO content of from 70 to 90% by weight and an EO content of from 10 to 30% by weight; (c) a polyether polyol having a hydroxyl functionality of 3, an OH number within a range of from 220 to 290 mg of KOH/g a
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: November 27, 2012
    Assignee: Bayer MaterialScience AG
    Inventors: Sebastien Triouleyre, Sven Meyer-Ahrens, Alice Mosbach-Rosenberger
  • Publication number: 20120184639
    Abstract: The present invention relates to a process for the production of polyurethane foams from A1 compounds containing isocyanate-reactive hydrogen atoms and having a molecular weight of from 400 to 15,000, A2 optionally compounds containing isocyanate-reactive hydrogen atoms and having a molecular weight of from 62 to 399, A3 water and/or physical foaming agents, A4 optionally auxiliary substances and additives, A5 compounds having at least one semicarbazide group, and B di- or poly-isocyanates which yields polyurethane foams with reduced formaldehyde emission and wherein the activity of the raw material mixture is not substantially affected and wherein the mechanical properties of the resulting foam (in particular compression set and ageing behaviour under humid conditions) are not adversely affected.
    Type: Application
    Filed: September 18, 2010
    Publication date: July 19, 2012
    Applicant: Bayer MaterialScience AG
    Inventors: Peter Haas, Gundolf Jacobs, Sven Meyer-Ahrens
  • Patent number: 8183302
    Abstract: The present invention relates to polyether polyol compositions containing renewable raw materials, a process for preparing visco-elastic polyurethane foams using such compositions, correspondingly prepared visco-elastic foam materials, and the use thereof.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: May 22, 2012
    Assignee: Bayer MaterialScience AG
    Inventors: Bert Klesczewski, Sebastien Triouleyre, Matthäus Gossner, Sven Meyer-Ahrens, Alice Mosbach-Rosenberger