Patents by Inventor Franz-Erich Baumann

Franz-Erich Baumann 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).

  • Patent number: 12129212
    Abstract: A polyamide powder for selective absorbing sintering, SAS, or selective inhibition sintering, SIS. The polyamide powder has a solution viscosity to ISO 307 of 1.8 to 2 and a rise in the solution viscosity of 0% to 25% when it is subjected to a temperature 20° C. below its melting temperature under air for 20 hours.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: October 29, 2024
    Assignee: Evonik Operations GmbH
    Inventors: Wolfgang Diekmann, Maik Grebe, Franz-Erich Baumann, Sylvia Monsheimer, Beatrice Küting
  • Patent number: 11976373
    Abstract: A method for the electrochemical preparation of alkanedicarboxylic acids involves a ring-opening oxidation with a doped Ni(O)OH foam electrode in an aqueous alkaline solution.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: May 7, 2024
    Assignee: Evonik Operations GmbH
    Inventors: Frank Weinelt, Franz-Erich Baumann, Siegfried R. Waldvogel, Anna-Lisa Rauen
  • Patent number: 11920008
    Abstract: A polymer composition can be used for selective absorbing sintering, SAS, or selective inhibition sintering, SIS. The polymer has open mesopores and the cumulative pore volume distribution of the mesopores, measured to DIN 66134, is at least 0.01 cm3/g.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: March 5, 2024
    Assignee: Evonik Operations GmbH
    Inventors: Wolfgang Diekmann, Maik Grebe, Franz-Erich Baumann, Wolfgang Christoph, Sylvia Monsheimer, Beatrice Küting
  • Publication number: 20240018092
    Abstract: An improved process can be used for the acid hydrolysis of polylaurolactam with sulfuric acid. An especially suitable starting material is polylaurolactam which is intended for recycling and which is characterized by a low laurolactam content.
    Type: Application
    Filed: September 14, 2021
    Publication date: January 18, 2024
    Applicant: Evonik Operations GmbH
    Inventors: Alexander Richter, Christian Nörmberg, Norbert Kern, Florian Hermes, Franz-Erich Baumann, Martin Roos, Daniel Demicoli
  • Publication number: 20230212762
    Abstract: A method for the electrochemical preparation of alkanedicarboxylic acids involves a ring-opening oxidation with a doped Ni(O)OH foam electrode in an aqueous alkaline solution.
    Type: Application
    Filed: May 26, 2021
    Publication date: July 6, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Frank Weinelt, Franz-Erich Baumann, Siegfried R. Waldvogel, Anna-Lisa Rauen
  • Publication number: 20220363899
    Abstract: A moulding composition contains polyetheramide (PEA) based on a subunit 1, made of at least one linear aliphatic diamine having 15 C atoms and at least one linear aliphatic or aromatic dicarboxylic acid having 6 to 14 C atoms. Furthermore, the PEA also contains a subunit 2, made of at least one polyether diamine having at least 2.3 C-5 atoms per ether oxygen and NH2 groups at the chain ends. The moulding composition contains a maximum of 2.5% by weight of a rubber containing functional groups. The number of C atoms of at least one component of subunit 1 selected from diamine and dicarboxylic acid is at least 13, and the average molar mass number of subunit 2 is between 200 to 900 g/mol. A moulded object can be created from the moulding compound. The object can be a moulded part, a film, a bristle, a fiber, or a foam.
    Type: Application
    Filed: September 30, 2020
    Publication date: November 17, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Franz-Erich BAUMANN, Kathrin Salwiczek
  • Publication number: 20220227932
    Abstract: Polyamides are claimed that comprise at least 10% by weight of at least one cyclic terpenoid substructure. The substructure is preferably derived from a monoterpene. A method for preparing the polyamides and for producing the moulding compounds is also described. The moulding compounds comprise 10% to 90% by weight of these polyamides.
    Type: Application
    Filed: May 19, 2020
    Publication date: July 21, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Frank Weinelt, Franz-Erich Baumann, Janina Koßmann
  • Publication number: 20220098372
    Abstract: A polymer composition can be used for selective absorbing sintering, SAS, or selective inhibition sintering, SIS. The polymer has open mesopores and the cumulative pore volume distribution of the mesopores, measured to DIN 66134, is at least 0.01 cm3/g.
    Type: Application
    Filed: October 26, 2021
    Publication date: March 31, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Wolfgang Diekmann, Maik Grebe, Franz-Erich Baumann, Wolfgang Christoph, Sylvia Monsheimer, Beatrice Küting
  • Publication number: 20220025118
    Abstract: A molding compound contains polyether block amide (PEBA) based on a subunit 1 made of at least one linear aliphatic diamine having 5 to 15 C atoms and at least one linear aliphatic or aromatic dicarboxylic acid having 6 to 16 C atoms. The PEBA also contains a subunit 2 made of at least one polyether diol having at least 3 C atoms per ether oxygen and primary OH groups at the chain ends. The sum of the C atoms of diamine and dicarboxylic acid is odd and is 19 or 21, and the number-average molar mass of the subunit 2 is 200 to 900 g/mol. A molded object can be created from the molding compound, which can be a molded part, a film, a bristle, a fiber, or a foam.
    Type: Application
    Filed: October 9, 2019
    Publication date: January 27, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Franz-Erich Baumann, Kathrin Salwiczek, Alexander Richter
  • Publication number: 20210371346
    Abstract: A polyamide powder for selective absorbing sintering, SAS, or selective inhibition sintering, SIS. The polyamide powder has a solution viscosity to ISO 307 of 1.8 to 2 and a rise in the solution viscosity of 0% to 25% when it is subjected to a temperature 20° C. below its melting temperature under air for 20 hours.
    Type: Application
    Filed: August 11, 2021
    Publication date: December 2, 2021
    Applicant: Evonik Operations GmbH
    Inventors: Wolfgang DIEKMANN, Maik Grebe, Franz-Erich Baumann, Sylvia Monsheimer, Beatrice Küting
  • Patent number: 11186688
    Abstract: A polymer composition can be used in selective absorbing sintering, SAS, or selective inhibition sintering, SIS, methods. The polymer of the polymer composition has open mesopores, where a cumulative pore volume distribution of the mesopores, measured according to DIN 66134, is at least 0.01 cm3/g.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: November 30, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Wolfgang Diekmann, Maik Grebe, Franz-Erich Baumann, Wolfgang Christoph, Sylvia Monsheimer, Beatrice Küting
  • Publication number: 20210355321
    Abstract: The present invention relates to a moulding compound which contains at least 50 wt. % of a semicrystalline poly amide component and the moulding compound contains a filler which imparts conductivity to the moulding compound, wherein the moulding compound does not have a crystallite melting point (Tm) below 50° C. and the polyamide component contains components A and B, A) PA homopolymer of the type PA X.Y or PAZ, where X is a diamine radical (DA), Y is a dicarboxyl radical (DC), and Z is an alpha-omega amino acid radical; B) PA copolymer of the type PA X?.Y?, where X is a diamine radical (DA?) and Y? is a dicarboxyl radical (DC?); wherein a portion of the diamine radical (DA?) is replaced by a polyether having at least two amino termini or at least two hydroxy termini; wherein the proportion of polyether in the sum of components A and Bis between 0.5 and 15 wt. % and wherein the proportion of filler is 2.5 to 6 wt. % based on the total mass of the poly amide component and the filler.
    Type: Application
    Filed: October 17, 2019
    Publication date: November 18, 2021
    Applicant: Evonik Operations GmbH
    Inventors: Christine Weiß, Olivier Farges, Franz-Erich Baumann, Klaus Gahlmann, Michael Böer, Andreas Szentivanyi, Mario Resing, Rainer Göring, Reinhard Linemann
  • Patent number: 11117837
    Abstract: A polyamide powder for selective absorbing sintering, SAS, or selective inhibition sintering, SIS. The polyamide powder has a solution viscosity to ISO 307 of 1.8 to 2 and a rise in the solution viscosity of 0% to 25% when it is subjected to a temperature 20° C. below its melting temperature under air for 20 hours.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 14, 2021
    Assignee: Evonik Operations GbmH
    Inventors: Wolfgang Diekmann, Maik Grebe, Franz-Erich Baumann, Sylvia Monsheimer, Beatrice Küting
  • Patent number: 10836903
    Abstract: A moulding material contains to an extent of at least 50 wt % of the combination of the following constituents a) 80 to 97 parts by mass of a polyamide component containing a1) 70 to 100 parts by wt of PA PACMX (wherein X=8 to 18), and a2) 30 to 0 parts by wt of a linear aliphatic polyamide having on average 8 to 12 carbon atoms in the monomer units, wherein the parts by wt sum to 100, and b) 20 to 3 parts by mass of a core-shell modifier which contains the following: b1) a core which contains 60 to 100 wt % of butadiene units and 0 to 40 wt % of styrene units, wherein the core makes up 60 to 95 wt % of the core-shell modifier; and b2) a shell which contains 80 to 100 wt % of methyl methacrylate units and 0 to 20 wt % of modifying monomer units, wherein the shell makes up 5 to 40 wt % of the core-shell modifier, wherein the parts by mass of a) and b) sum to 100.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: November 17, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Heinrich Peirick, Jasmin Berger, Franz-Erich Baumann
  • Patent number: 10787559
    Abstract: Composite particles comprising core particles completely or partially coated with a precipitated polymer, where the d50 median diameter of the core particles is from 3 to 100 ?m and wherein the glass core particle material is at least one selected from the group consisting of a solid glass bead, a hollow glass bead, a porous glass bead, and a foamed glass particle. A method to prepare the particles includes dissolution of a polymer in a solvent and precipitation of the polymer in the presence of a suspension of the core glass particles. Further provided is a layer by layer moulding process employing the composite particles and mouldings obtained therefrom.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: September 29, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Sylvia Monsheimer, Wolfgang Diekmann, Franz-Erich Baumann, Sigrid Hessel-Geldmann, Kristiane Warnke, Heike Stemmer, Stefan Altkemper
  • Patent number: 10479733
    Abstract: Composite particles comprising core particles completely or partially coated with a precipitated polymer, where the d50 median diameter of the core particles is 1 ?m or greater and the ratio of the d50 median diameter of the composite particles to the d50 median diameter of the core particles is 1.15 or greater, are provided. A method to prepare the particles includes dissolution of a polymer in a solvent and reprecipitation of the polymer in the presence of a suspension of the core particles. Further provided is a layer by layer moulding process employing the composite particles and mouldings obtained therefrom.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: November 19, 2019
    Assignee: Evonik Degussa GmbH
    Inventors: Wolfgang Diekmann, Franz-Erich Baumann, Maik Grebe, Kristiane Warnke, Sylvia Monsheimer
  • Publication number: 20190275731
    Abstract: The invention relates to a polymer powder for use in a layer-by-layer method in which areas of each powder layer are selectively fused by introducing electromagnetic energy. Said polymer powder contains: at least one AB-type polyamide produced by polymerizing lactams comprising 10 to 12 carbon atoms in the monomer unit or polycondensing the corresponding ?-amino carboxylic acids comprising 10 to 12 carbon atoms in the monomer unit and at least one AABB-type polyamide produced by polycondensing diamines and dicarboxylic acids, each of which comprises 10 to 14 carbon atoms in the monomer units, the AB-type polyamide containing up to 20 mole % of the AABB comonomer units and the AABB-type polyamide containing up to 20 mole % of the AB monomer units.
    Type: Application
    Filed: May 24, 2019
    Publication date: September 12, 2019
    Applicant: Evonik Degussa GmbH
    Inventors: Franz Erich BAUMANN, Wolfgang Diekmann, Beatrice Kueting, Heike Stemmer, Maik Grebe, Kristiane Warnke, Sylvia Monsheimer, Harald Haeger
  • Patent number: 10406745
    Abstract: Disclosed herein is a polymer powder containing a polyamide of AB type, produced by polymerizing at least one lactam having from 10 to 12 carbon atoms in a monomer unit or by polycondensing at least one corresponding ?-aminocarboxylic acid having from 10 to 12 carbon atoms in a monomer unit, and a polyamide of AABB type, produced by polycondensing at least one diamine and at least one dicarboxylic acid having respectively from 10 to 14 carbon atoms in monomer units. The polyamide of the AB type and the polyamide of the AABB type are prepared separately and then coprecipitated to form the polymer powder, and the polymer powder is a physical mixture of the polyamide of the AB type and the polyamide of the AABB type. Also disclosed herein is a method for producing the polymer powder.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: September 10, 2019
    Assignee: Evonik Degussa GmbH
    Inventors: Franz Erich Baumann, Wolfgang Diekmann, Beatrice Kueting, Heike Stemmer, Maik Grebe, Kristiane Warnke, Sylvia Monsheimer, Harald Haeger
  • Publication number: 20190177478
    Abstract: Polymers can be prepared from monomers comprising laurolactam, by a process including a. Beckmann rearrangement of cyclododecanone oxime to give laurolactam in the presence of a Beckmann rearrangement catalyst, b. removal of impurities from the laurolactam to obtain purified laurolactam, and c. polymerization of monomers comprising purified laurolactam. For avoidance of discolouration or yellowing under ageing conditions, prior to the polymerization, polycyclic substances containing 24 carbon atoms and at least one heteroatom selected from oxygen and nitrogen and having a molar mass between 300 and 380 g/mol are limited to 500 ppm, based on laurolactam.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 13, 2019
    Applicant: Evonik Degussa GmbH
    Inventors: Kévin MICOINE, Kristina ZUMBANSEN, Franz-Erich BAUMANN, Marcus Matthias STERGAR, Andreas PAWLIK, Christoph HILLER, Mirko MICHEL, Christoph KOOPMANN
  • Publication number: 20180355123
    Abstract: A polymer composition can be used in selective absorbing sintering, SAS, or selective inhibition sintering, SIS, methods. The polymer of the polymer composition has open mesopores, where a cumulative pore volume distribution of the mesopores, measured according to DIN 66134, is at least 0.01 cm3/g.
    Type: Application
    Filed: December 14, 2016
    Publication date: December 13, 2018
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Wolfgang DIEKMANN, Maik Grebe, Franz-Erich Baumann, Wolfgang Christoph, Sylvia Monsheimer, Beatrice KÜTING