Patents by Inventor Eckhard Neufeld
Eckhard Neufeld 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).
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Publication number: 20230146413Abstract: Expandable styrene polymers comprising polymeric brominated flame-retardant, wherein the polymeric brominated flame-retardant comprises at least one brominated polybutadiene block having a bromination degree between 33 and 75%, based on the double bonds in the polybutadiene block before bromination, a process for producing such expandable styrene polymers by suspension polymerization and particulate foam moldings made therefrom.Type: ApplicationFiled: April 19, 2021Publication date: May 11, 2023Inventors: Ingo BELLIN, Eckhard NEUFELD, Jan HOLOCH
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Patent number: 11248080Abstract: Brominated vinylaromatic-diene block copolymers (Br-SBC) comprising a vinylaromatic polymer block S and a brominated diene polymer block BB, wherein before bromination the weight-average molar mass Mw of the block S is greater than or equal to Mw of the block BB, use thereof as flame retardants, and also polymer compositions comprising these for unfoamed and foamed thermoplastic polymers, for example EPS and XPS.Type: GrantFiled: May 16, 2018Date of Patent: February 15, 2022Assignee: BASF SEInventors: Konrad Knoll, Ingo Bellin, Jan Holoch, Eckhard Neufeld
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Publication number: 20200165372Abstract: Brominated vinylaromatic-diene block copolymers (Br-SBC) comprising a vinylaromatic polymer block S and a brominated diene polymer block BB, wherein before bromination the weight-average molar mass Mw of the block S is greater than or equal to Mw of the block BB, use thereof as flame retardants, and also polymer compositions comprising these for unfoamed and foamed thermoplastic polymers, for example EPS and XPS.Type: ApplicationFiled: May 16, 2018Publication date: May 28, 2020Inventors: Konrad KNOLL, Ingo BELLIN, Jan HOLOCH, Eckhard NEUFELD
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Patent number: 10232556Abstract: The invention relates to a process for the production of at least two-layer thermoplastic sheets via thermal welding of at least one thinner thermoplastic sheet with density (D1) and of at least one second thinner thermoplastic sheet with density (D2), where the density (D1) of the first thinner thermoplastic sheet is smaller than the density (D2) of the second thinner thermoplastic sheet. The process introduces at least one first heating element and at least one second heating element along mutually offset planes between the two thinner thermoplastic sheets, where the surfaces of the thinner thermoplastic sheets do not touch the surfaces of the heating elements. The first heating element transfers a quantity of energy (E1) to the surface of the first thinner thermoplastic sheet, and the second heating element transfers a quantity of energy (E2) to the surface of the second thinner thermoplastic sheet, where the quantity of energy (E1) is smaller than the quantity of energy (E2).Type: GrantFiled: December 17, 2015Date of Patent: March 19, 2019Assignee: BASF SE (Ellwanger & Baier Patentanwälte)Inventors: Eckhard Neufeld, Carsten Sandner, Tim Diehlmann, Franz-Josef Dietzen, Dietrich Scherzer
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Publication number: 20170368761Abstract: The invention relates to a process for the production of at least two-layer thermoplastic sheets via thermal welding of at least one thinner thermoplastic sheet with density (D1) and of at least one second thinner thermoplastic sheet with density (D2), where the density (D1) of the first thinner thermoplastic sheet is smaller than the density (D2) of the second thinner thermoplastic sheet. The process introduces at least one first heating element and at least one second heating element along mutually offset planes between the two thinner thermoplastic sheets, where the surfaces of the thinner thermoplastic sheets do not touch the surfaces of the heating elements. The first heating element transfers a quantity of energy (E1) to the surface of the first thinner thermoplastic sheet, and the second heating element transfers a quantity of energy (E2) to the surface of the second thinner thermoplastic sheet, where the quantity of energy (E1) is smaller than the quantity of energy (E2).Type: ApplicationFiled: December 17, 2015Publication date: December 28, 2017Inventors: ECKHARD NEUFELD, Carsten SANDNER, Tim DIEHLMANN, Franz-Josef DIETZEN, Dietrich SCHERZER
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Patent number: 8455559Abstract: The invention provides a process for preparing expandable styrene polymers which comprises the steps of: (a) adding an aqueous phase comprising a suspension stabilizer and an organic phase comprising styrene and an initiator to a reactor, (b) commencing the addition of a blowing agent at a styrene conversion in the range from 40 to 70% and adding the blowing agent over a period ranging from 30 to 60 minutes, (c) adding a stabilizer to stabilize the bead size distribution of the expandable styrene polymer at a styrene conversion in the range from 65 to 99%.Type: GrantFiled: March 11, 2011Date of Patent: June 4, 2013Assignee: BASF SEInventors: Wolfgang Ferstl, Jun Gao, Klaus Hahn, Pascal Hesse, Jan Holoch, Klaus-Dieter Hungenberg, Wolfram Husemann, Renata Jovanovic, Wolfgang Kasten, Olaf Kriha, Eckhard Neufeld, Michel Pepers, Birgit Reinhard, Bernhard Schmied, Rudolf Süttinger, Ping Zhang
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Publication number: 20110224316Abstract: The invention provides a process for preparing expandable styrene polymers which comprises the steps of: (a) adding an aqueous phase comprising a suspension stabilizer and an organic phase comprising styrene and an initiator to a reactor, (b) commencing the addition of a blowing agent at a styrene conversion in the range from 40 to 70% and adding the blowing agent over a period ranging from 30 to 60 minutes, (c) adding a stabilizer to stabilize the bead size distribution of the expandable styrene polymer at a styrene conversion in the range from 65 to 99%.Type: ApplicationFiled: March 11, 2011Publication date: September 15, 2011Applicant: BASF SEInventors: Wolfgang Ferstl, Jun Gao, Klaus Hahn, Pascal Hesse, Jan Holoch, Klaus-Dieter Hungenberg, Wolfram Husemann, Renata Jovanovic, Wolfgang Kasten, Olaf Kriha, Eckhard Neufeld, Michel Pepers, Birgit Reinhard, Bernhard Schmied, Rudolf Süttinger, Ping Zhang
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Patent number: 5633329Abstract: Process for the preparing high molecular weight polymers by polymerization of water-soluble, monoethylenically unsaturated moonomers and, if desired, crosslinkers, and, if desired, water-insoluble monoethylenically unsaturated monomers, in aqueous solution in the presence of polymerization initiators in a tubular reaction which at the end has a conical taper, the ratio of the diameter of the reactor (D1) to the diameter at the end of the conical taper of the reactor (D2) being from 2:1 to 25:1 and the angle between D1 at the beginning of the conical taper and the inner cone wall being >45.degree. and <90.degree., and discharge of the gelatinous reaction mixture from the reactor by injection of an inert gas.Type: GrantFiled: January 25, 1996Date of Patent: May 27, 1997Assignee: BASF AktiengesellschaftInventors: Hans-Joachim H ahnle, Eckhard Neufeld, Gunnar Schornick, Roland Minges, Thomas Anstock, J urgen Tropsch, Hans-J urgen Krauss
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Patent number: 5580948Abstract: For the preparation of polyarylene ether ketones by Friedel-Crafts polycondensation, a reaction mixture consisting ofA. a monomer system,B. a Lewis acid,C. if required, a Lewis base andD. an inert solventis subjected to polycondensation in two reaction zones, discharged from the second reaction zone with plug flow and compounded. The reaction mixture is subjected to polycondensation in the first reaction zone while stirring to a viscosity of about 2,000 mPa.s, is transferred to the second reaction zone and is discharged therefrom by means of an inert solvent or of an inert gas saturated with the solvent, under from about 6 to 65, preferably from 10 to 25, bar, the transport pressure being reduced in at least two stages and the pressure reduction in the first stage being not more than 60%.Type: GrantFiled: August 3, 1994Date of Patent: December 3, 1996Assignee: BASF AktiengesellschaftInventors: Eckhard Neufeld, Barbel Arnold-Mauer, Jurgen Hofmann, Thomas Heitz, Christoph Sachsenweger, Petra Wieland
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Patent number: 5310867Abstract: Abstract of the Disclosure: Particles of poly(meth)acrylimides obtainable by reacting a polymer based on C.sub.1 -C.sub.22 -alkyl esters of acrylic and/or methacrylic acid with ammonia and/or at least one primary amine RNH.sub.2 are produced byA) exiting a solution of the polymer from a nozzle in a multiplicity of jets of liquid,B) breaking up the jets of liquid into droplets having a narrow size distribution by setting the nozzle swinging longitudinally or transversely or by pulsing the liquid inside the nozzle or by providing for some distance between the point of exit from the nozzle and the point of entry into a coagulating bath,C) precipitating the resulting droplets by introducing them into a coagulating bath which contains a liquid in which the polymer does not dissolve, andD) stripping the polymer particles of solvent residues and other impurities,and are useful for making shaped articles.Type: GrantFiled: February 25, 1993Date of Patent: May 10, 1994Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Hermann Fischer, Eckhard Neufeld