Patents by Inventor Tim Loddenkemper

Tim Loddenkemper 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: 20210154657
    Abstract: A process is described for regenerating a catalyst comprising ruthenium or ruthenium compounds, which has been poisoned by sulfur compounds, in which the catalyst, optionally at elevated temperature, is subjected to treatment with a hydrogen halide, particularly a gas stream comprising hydrogen chloride, under non-oxidative conditions and additionally, optionally at reduced temperature, to an at least two-stage oxidative post-treatment.
    Type: Application
    Filed: May 14, 2018
    Publication date: May 27, 2021
    Applicant: Covestro Deutschland AG
    Inventors: Andre RITTERMEIER, Michael VENZ, Thomas BURBACH, Timm SCHMIDT, Tim LODDENKEMPER, Frank GERHARTZ, Walther MÜLLER
  • Publication number: 20210024459
    Abstract: The invention relates to a method for recovering monomer diisocyanates, which are solid at room temperature, from a distillation residue, said method comprising the following steps: (i) preparing at least one residue which contains diisocyanates, which are solid at room temperature, and (ii) separating the residue in at least one kneader-dryer, paddle-dryer and/or roller-dryer in the presence of less than 2 wt % bitumen, based on the mass of the residue prepared in step (i), into a gaseous portion, containing monomer diisocyanate that is solid at room temperature, and a brittle residue depleted of diisocyanate, which is solid at room temperature.
    Type: Application
    Filed: April 3, 2019
    Publication date: January 28, 2021
    Inventors: Joerg Morawski, Tim Loddenkemper, Stefanie Lang, Rainer Bellinghausen, Ulrich Liesenfelder, Michael Merkel, Marc Seekamp, Ariane Dunker
  • Publication number: 20200392074
    Abstract: The invention relates to a method for preparing a suspension of a hydrochloride of an organic amine, comprising the following steps of (i) initially charging at least one organic solvent in a reaction vessel to form a liquid level, (ii) adding hydrogen chloride, (iii) adding the organic amine, wherein the organic amine is added below the liquid level present in the reaction vessel and steps (ii) and (iii) are at least partly carried out simultaneously. Furthermore, the present invention also relates to a method wherein the suspension obtained after step (iii) is reacted in a step (iv) with phosgene to obtain the organic isocyanate corresponding to the organic amine used, to the corresponding organic isocyanate and to the use of the organic isocyanate for producing polyisocyanates.
    Type: Application
    Filed: May 27, 2020
    Publication date: December 17, 2020
    Inventors: Michael Merkel, Tim Loddenkemper, Frank Gerhartz, Stefan Hirschfeld
  • Patent number: 10703713
    Abstract: The industrial scale preparation of isocyanates gives rise to distillation bottom streams that are in need of further workup. These distillation bottom streams still also contain, as well as a distillation residue consisting of compounds that can be evaporated without decomposition only with great difficulty if at all (also referred to as residue for short), proportions of the desired target product (i.e. isocyanate to be prepared). The present invention relates to a process that enables recovery, in an efficient manner, of this proportion of isocyanate to be prepared in a distillation bottom stream which is obtained in the workup of the crude liquid process product which contains the isocyanate to be prepared and is formed in an isocyanate preparation process. More particularly, the present invention relates to a drying step in which the isocyanate to be prepared is recovered to form a solid material that has been largely to completely freed of this isocyanate.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: July 7, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Tim Loddenkemper, Jurgen Arras, Markus Dugal
  • Patent number: 10676448
    Abstract: The invention relates to a novel method for producing polyisocyanurates comprising isocyanate groups, based on 2,4- and 2,6-toluylene diisocyanate (TDI) and to the use thereof in coating compositions.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: June 9, 2020
    Assignee: Covestro Deutschland AG
    Inventors: Josef Sanders, Andreas Hecking, Reinhard Halpaap, Frank Richter, Oswald Wilmes, Jan Busch, Tim Loddenkemper, Friedhelm Steffens, Stefan Groth
  • Publication number: 20200095194
    Abstract: The industrial scale preparation of isocyanates gives rise to distillation bottom streams that are in need of further workup. These distillation bottom streams still also contain, as well as a distillation residue consisting of compounds that can be evaporated without decomposition only with great difficulty if at all (also referred to as residue for short), proportions of the desired target product (i.e. isocyanate to be prepared). The present invention relates to a process that enables recovery, in an efficient manner, of this proportion of isocyanate to be prepared in a distillation bottom stream which is obtained in the workup of the crude liquid process product which contains the isocyanate to be prepared and is formed in an isocyanate preparation process. More particularly, the present invention relates to a drying step in which the isocyanate to be prepared is recovered to form a solid material that has been largely to completely freed of this isocyanate.
    Type: Application
    Filed: December 18, 2017
    Publication date: March 26, 2020
    Inventors: Tim LODDENKEMPER, Jurgen ARRAS, Markus DUGAL
  • Patent number: 10435353
    Abstract: The invention relates to the production of isocyanates by means of phosgenation of the corresponding primary amines in the gas phase, wherein the reactant flows of amine and phosgene are fed separately to a reactor through a pre-heated inert gas flow. Isocyanates within the sense of the invention are, in the broadest sense, all isocyanates whose corresponding amines can be substantially converted into the gas phase without decomposing, with the exception of 1,5-pentane diisocyanate.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: October 8, 2019
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Joachim Zechlin, Tim Loddenkemper, Friedhelm Steffens, Dietmar Wastian
  • 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: 20190031625
    Abstract: The invention relates to a novel method for producing polyisocyanurates comprising isocyanate groups, based on 2,4- and 2,6-toluylene diisocyanate (TDI) and to the use thereof in coating compositions.
    Type: Application
    Filed: October 3, 2018
    Publication date: January 31, 2019
    Inventors: Josef Sanders, Andreas Hecking, Reinhard Halpaap, Frank Richter, Oswald Wilmes, Jan Busch, Tim Loddenkemper, Friedhelm Steffens, Stefan Groth
  • Patent number: 10189945
    Abstract: The invention relates to polyisocyanates comprising urethane groups, based on toluylene diisocyanate, to a method for their production, and to their use as the polyisocyanate component in one- and two-component polyurethane coatings.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: January 29, 2019
    Assignee: Covestro Deutschland AG
    Inventors: Josef Sanders, Andreas Hecking, Reinhard Halpaap, Frank Richter, Oswald Wilmes, Jan Busch, Tim Loddenkemper, Friedhelm Steffens
  • Publication number: 20180370907
    Abstract: The invention relates to the production of isocyanates by means of phosgenation of the corresponding primary amines in the gas phase, wherein the reactant flows of amine and phosgene are fed separately to a reactor through a pre-heated inert gas flow. Isocyanates within the sense of the invention are, in the broadest sense, all isocyanates whose corresponding amines can be substantially converted into the gas phase without decomposing, with the exception of 1,5-pentane diisocyanate.
    Type: Application
    Filed: November 29, 2016
    Publication date: December 27, 2018
    Inventors: Joachim Zechlin, Tim Loddenkemper, Friedhelm Steffens, Dietmar Wastian
  • Patent number: 10131641
    Abstract: The invention relates to a novel method for producing polyisocyanurates comprising isocyanate groups, based on 2,4- and 2,6-toluylene diisocyanate (TDI) and to the use thereof in coating compositions.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: November 20, 2018
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Josef Sanders, Andreas Hecking, Reinhard Halpaap, Frank Richter, Oswald Wilmes, Jan Busch, Tim Loddenkemper, Friedhelm Steffens, Stefan Groth
  • Patent number: 9695115
    Abstract: The invention relates to a method for preparing isocyanates by phosgenating the corresponding amines, wherein low-boiling secondary components, excess phosgene, and the co-product hydrogen chloride are separated from the crude liquid isocyanate stream, which is obtained after the phosgenation has occurred, within a maximum of 60 minutes, and wherein the crude liquid isocyanate stream is not exposed to temperatures above 250° C. until said separation.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: July 4, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Rainer Bruns, Wolfgang Lorenz, Andreas Karl Rausch, Stefan Wershofen, Tim Loddenkemper
  • Patent number: 9593075
    Abstract: The invention relates to a method for preparing isocyanates by phosgenating the corresponding amines, wherein low-boiling secondary components, excess phosgene, and the co-product hydrogen chloride are separated from the crude liquid isocyanate stream, which is obtained after the phosgenation has occurred, within a maximum of 60 minutes, and wherein the crude liquid isocyanate stream is not exposed to temperatures above 250° C. until said separation.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 14, 2017
    Assignee: Covestro Deutschland AG
    Inventors: Rainer Bruns, Wolfgang Lorenz, Andreas Karl Rausch, Stefan Wershofen, Tim Loddenkemper
  • Publication number: 20160376228
    Abstract: The invention relates to a method for preparing isocyanates by phosgenating the corresponding amines, wherein low-boiling secondary components, excess phosgene, and the co-product hydrogen chloride are separated from the crude liquid isocyanate stream, which is obtained after the phosgenation has occurred, within a maximum of 60 minutes, and wherein the crude liquid isocyanate stream is not exposed to temperatures above 250° C. until said separation.
    Type: Application
    Filed: September 7, 2016
    Publication date: December 29, 2016
    Inventors: Rainer Bruns, Wolfgang Lorenz, Andreas Karl Rausch, Stefan Wershofen, Tim Loddenkemper
  • Patent number: 9328064
    Abstract: The invention relates to a process for the preparation of isocyanates by reaction of the corresponding amines with phosgene in the gas phase, wherein a diluent containing between 90.0000% by weight and 99.9999% by weight of substances which are inert in the phosgenation process and between 0.0001% by weight and 10.0000% by weight of oxygen is present during the conversion of the amine into the gas phase and the molar ratio of amine to oxygen (O2) is ?1,000:1.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: May 3, 2016
    Assignee: Bayer MaterialScience AG
    Inventors: Rainer Bruns, Wolfgang Lorenz, Andreas Karl Rausch, Stefan Wershofen, Tim Loddenkemper
  • Publication number: 20160031834
    Abstract: The invention relates to a novel method for producing polyisocyanurates comprising isocyanate groups, based on 2,4- and 2,6-toluylene diisocyanate (TDI) and to the use thereof in coating compositions.
    Type: Application
    Filed: March 7, 2014
    Publication date: February 4, 2016
    Inventors: Josef SANDERS, Andreas HECKING, Reinhard HALPAAP, Frank RICHTER, Oswald WILMES, Jan BUSCH, Tim LODDENKEMPER, Friedhelm STEFFENS, Stefan GROTH
  • Patent number: 9242860
    Abstract: Chlorine is prepared by catalytic oxidation of a hydrogen chloride stream having a content of sulfur in elemental or bonded form of less than 100 ppm, preferably less than 50 ppm, more preferably less than 5 ppm, most preferably less than 1 ppm, based on the weight of the hydrogen chloride stream.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: January 26, 2016
    Assignee: Bayer MaterialScience AG
    Inventors: Michel Haas, Rainer Bruns, Tim Loddenkemper
  • Publication number: 20160017097
    Abstract: The invention relates to polyisocyanates comprising urethane groups, based on toluylene diisocyanate, to a method for their production, and to their use as the polyisocyanate component in one- and two-component polyurethane coatings.
    Type: Application
    Filed: March 7, 2014
    Publication date: January 21, 2016
    Applicant: BAYER MATERIALSCIENCE AG
    Inventors: Josef SANDERS, Andreas HECKING, Reinhard HALPAAP, Frank RICHTER, Oswald WILMES, Jan BUSCH, Tim LODDENKEMPER, Friedhelm STEFFENS
  • Publication number: 20150299111
    Abstract: The invention relates to a process for the preparation of isocyanates by reaction of the corresponding amines with phosgene in the gas phase, wherein a diluent containing between 90.0000% by weight and 99.9999% by weight of substances which are inert in the phosgenation process and between 0.0001% by weight and 10.0000% by weight of oxygen is present during the conversion of the amine into the gas phase and the molar ratio of amine to oxygen (O2) is ?1,000:1.
    Type: Application
    Filed: July 2, 2015
    Publication date: October 22, 2015
    Inventors: Rainer BRUNS, Wolfgang LORENZ, Andreas Karl RAUSCH, Stefan WERSHOFEN, Tim LODDENKEMPER