Patents by Inventor Hans-Jurgen Thiem
Hans-Jurgen Thiem 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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Patent number: 10899909Abstract: The invention relates to compositions containing (A) at least one polymer selected from the groups of aromatic polycarbonates and aromatic polyester carbonates and (B) at least one Bronsted-acidic compound, such as ethylenediaminetetraacetic acid (EDTA), and also relates to a process for producing compositions using components (A), (B) and optionally further components, wherein at least one of the employed components is alkaline or contains alkaline constituents, to compositions obtained by this process and to the use of the compositions for producing molded articles and to the molded articles themselves.Type: GrantFiled: September 29, 2016Date of Patent: January 26, 2021Assignee: Covestro Deutschland AGInventors: Andreas Seidel, Ralf Hufen, Hans-Jürgen Thiem
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Patent number: 10844182Abstract: The invention relates to a compounding method for producing impact-modified polycarbonate compositions using components acting as an alkali or using alkaline constituent-containing components. By using the method according to the invention, the harmful influence of the components acting as an alkali on the properties of polycarbonate molding compositions or the surface of molded bodies produced therefrom is counteracted. The method has the steps (i), (ii), and optionally (iii), wherein (i) in a first step A) 10 to 98 wt. % of at least one polymer selected from the group of aromatic polycarbonates and aromatic polyester carbonates, B) 0.001 to 0.3 wt. % of at least one organic Brønsted acid, i.e. a carbon and hydrogen-containing Brønsted acid, C) 0.0001 to 0.008 wt. % of at least one inorganic Brønsted acidic phosphorus compound, i.e. a Brønsted acidic phosphorus compound which does not contain carbon, D) 1 to 90 wt. % of at least one rubber-containing vinyl(co)polymerisate, E) 0 to 90 wt.Type: GrantFiled: October 20, 2016Date of Patent: November 24, 2020Assignee: Covestro Deutschland AGInventors: Andreas Seidel, Ralf Hufen, Hans-Jürgen Thiem, Joachim Simon
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Publication number: 20190382541Abstract: The invention relates to a compounding method for producing impact-modified polycarbonate compositions using components acting as an alkali or using alkaline constituent-containing components. By using the method according to the invention, the harmful influence of the components acting as an alkali on the properties of polycarbonate molding compositions or the surface of molded bodies produced therefrom is counteracted. The method has the steps (i), (ii), and optionally (iii), wherein (i) in a first step A) 10 to 98 wt. % of at least one polymer selected from the group of aromatic polycarbonates and aromatic polyester carbonates, B) 0.001 to 0.3 wt. % of at least one organic Brønsted acid, i.e. a carbon and hydrogen-containing Brønsted acid, C) 0.0001 to 0.008 wt. % of at least one inorganic Brønsted acidic phosphorus compound, i.e. a Brønsted acidic phosphorus compound which does not contain carbon, D) 1 to 90 wt. % of at least one rubber-containing vinyl(co)polymerisate, E) 0 to 90 wt.Type: ApplicationFiled: October 20, 2016Publication date: December 19, 2019Inventors: ANDREAS SEIDEL, Ralf HUFEN, Hans-Jürgen THIEM, Joachim SIMON
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Patent number: 9376561Abstract: Described herein are polymer compositions comprising at least one inorganic salt comprising a cation selected from the group consisting of alkali metals, alkaline earth metals and aluminum, and an anion selected from the group consisting of chloride, sulfate, nitrate, phosphate, acetate and formate, in a concentration of 100 to 5000 mg/kg, based on the composition, and wherein the salt is present in the composition exclusively in dissolved form or in the form of amorphous and/or crystalline inclusions having a size of not more than 60 ?m. Compositions of the present invention are distinguished by an improved surface after heat-moisture storage and are suitable in particular for the production of moldings with a high gloss finish that demand a class A surface, which have optionally been subjected, in whole or in part, to a further surface treatment step involving e.g. lacquering, in-mold decoration, or metallization by vacuum deposition or galvanization.Type: GrantFiled: April 19, 2013Date of Patent: June 28, 2016Assignee: BAYER MATERIALSCIENCE AGInventors: Andreas Seidel, Eckhard Wenz, Hans-Juergen Klankers, Birgit Derfuss, Hans-Jurgen Thiem, Sven Hobeika, Ingmar Hermsdorfer
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Patent number: 9359489Abstract: The present invention relates to a polymer composition containing polycarbonate with a weight-average molecular weight Mw of from 24,000 to 33,000 and 5.0 wt. % to 20.0 wt. % (based on the total amount of the composition) of glass hollow spheres with an alkalinity of less than 1.0 meq/g. The present invention furthermore provides coextruded sheets in which the coextruded layer contains this polymer composition, and shaped articles produced therefrom, in particular containers and pieces of luggage, very particularly suitcases. Sheets which are obtainable with the polymer composition according to the invention have a high mechanical stability, a high scratch resistance, pleasant haptic properties and an excellent homogeneous external visual impression. The present invention furthermore relates to a process for the preparation of these polymer compositions and a process for production of the sheets according to the invention.Type: GrantFiled: August 7, 2012Date of Patent: June 7, 2016Assignee: Covestro Deutschland AGInventors: Ulrich Blaschke, Heinrich Hähnsen, Peter Schwarz, Klaus Kraner, Hans-jürgen Thiem, Michael Wagner
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Patent number: 9056957Abstract: A masterbatch comprising pigment and demolding agent is provided. The demolding agent is selected from the group comprising low molecular weight polyolefin oils, low molecular weight polyolefin waxes, montan waxes and aliphatic or aromatic carboxylic acid esters of fatty acids and/or fatty alcohols, wherein the pigment content of the masterbatch is from 3 to 70 wt. %, based on the total weight of the masterbatch. The masterbatch is suitable for preparation of a polymer composition having improved pigment dispersion.Type: GrantFiled: December 20, 2011Date of Patent: June 16, 2015Assignee: BAYER MATERIALSCIENCE AGInventors: Andreas Seidel, Hans-Jurgen Thiem, Reiner Rudolf, Joerg Reichenauer, Thomas Eckel
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Patent number: 9028132Abstract: A mixing silo for free-flowing finely divided solid materials, in particular for powdered, fibrous and/or granular mixed material, especially polymer granules, specifically suited for mixing polymer granules, having an excellent mixing quality and at the same time a simplified and improved suitability for washing out in order to avoid cross contamination. The mixing silo may be used for homogenizing possibly inhomogeneous polymer granule batches in the form of a stream of product from a process producing polymer granules.Type: GrantFiled: March 8, 2012Date of Patent: May 12, 2015Assignee: Bayer MaterialScience AGInventors: Herbert Ungerechts, Hans-Jörg Frank, Christoph Schwemler, Reiner Horl, Hans-Jürgen Thiem, Markus Hagedorn
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Publication number: 20140295160Abstract: Multi-layer bodies comprising: 1) a base layer comprising at least one thermoplastic; nanoscale carbon black in an amount of from 0.05 to 0.15 wt. %; a demoulding agent based on a fatty acid ester in a concentration of from 0.1 to 0.5 wt. %, 2) at least on one side of the base layer a scratch-resistant coating based on polysiloxane having a thickness of from 2 to 15 ?m, comprising at least one UV absorber, wherein the sum of the values of the above-mentioned components of the base layer is 100 wt. %.Type: ApplicationFiled: November 27, 2012Publication date: October 2, 2014Inventors: Alexander Meyer, Peter Capellen, Jörg Reichenauer, Reiner Rudolf, Andreas Seidel, Hans-Jürgen Thiem
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Publication number: 20140275339Abstract: The present invention relates to a process for the preparation of stabilised impact-modified polycarbonate compositions using dilute aqueous acidic solutions, and to the compositions so prepared themselves.Type: ApplicationFiled: October 23, 2012Publication date: September 18, 2014Inventors: Andreas Seidel, Hans-Jürgen Thiem
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Publication number: 20140220273Abstract: The present invention relates to a polymer composition containing polycarbonate with a weight-average molecular weight Mw of from 24,000 to 33,000 and 5.0 wt. % to 20.0 wt. % (based on the total amount of the composition) of glass hollow spheres with an alkalinity of less than 1.0 meq/g. The present invention furthermore provides coextruded sheets in which the coextruded layer contains this polymer composition, and shaped articles produced therefrom, in particular containers and pieces of luggage, very particularly suitcases. Sheets which are obtainable with the polymer composition according to the invention have a high mechanical stability, a high scratch resistance, pleasant haptic properties and an excellent homogeneous external visual impression. The present invention furthermore relates to a process for the preparation of these polymer compositions and a process for production of the sheets according to the invention.Type: ApplicationFiled: August 7, 2012Publication date: August 7, 2014Applicant: Bayer Intellectual Property GmbHInventors: Ulrich Blaschke, Heinrich Hähnsen, Peter Schwarz, Klaus Kraner, Hans-jürgen Thiem, Michael Wagner
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Patent number: 8680201Abstract: The present invention relates to a compounding method for producing impact-modified thermoplastic compositions with a low content of volatile organic compounds (hereinafter VOCs), wherein relatively inexpensive polymer raw materials with a comparatively elevated initial VOC content may be used, resulting in lowered production costs for producing such VOC-reduced polymer compositions.Type: GrantFiled: February 18, 2010Date of Patent: March 25, 2014Assignee: Bayer Materialscience AGInventors: Andreas Seidel, Hans-Jürgen Thiem
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Publication number: 20130281595Abstract: Described herein are polymer compositions comprising at least one inorganic salt comprising a cation selected from the group consisting of alkali metals, alkaline earth metals and aluminium, and an anion selected from the group consisting of chloride, sulfate, nitrate, phosphate, acetate and formate, in a concentration of 100 to 5000 mg/kg, based on the composition, and wherein the salt is present in the composition exclusively in dissolved form or in the form of amorphous and/or crystalline inclusions having a size of not more than 60 ?m. Compositions of the present invention are distinguished by an improved surface after heat-moisture storage and are suitable in particular for the production of mouldings with a high gloss finish that demand a class A surface, which have optionally been subjected, in whole or in part, to a further surface treatment step involving e.g. lacquering, in-mould decoration, or metallization by vacuum deposition or galvanization.Type: ApplicationFiled: April 19, 2013Publication date: October 24, 2013Applicant: BAYER INTELLECTUAL PROPERTY GMBHInventors: Andreas Seidel, Eckhard Wenz, Hans-Juergen Klankers, Birgit Derfuss, Hans-Jurgen Thiem, Sven Hobeika, Ingmar Hermsdorfer
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Publication number: 20120230146Abstract: A mixing silo for free-flowing finely divided solid materials, in particular for powdered, fibrous and/or granular mixed material, especially polymer granules, specifically suited for mixing polymer granules, having an excellent mixing quality and at the same time a simplified and improved suitability for washing out in order to avoid cross contamination. The mixing silo may be used for homogenizing possibly inhomogeneous polymer granule batches in the form of a stream of product from a process producing polymer granules.Type: ApplicationFiled: March 8, 2012Publication date: September 13, 2012Applicant: Bayer MaterialScience AGInventors: Herbert Ungerechts, Hans-Jörg Frank, Christoph Schwemler, Reiner Horl, Hans-Jürgen Thiem, Markus Hagedorn
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Publication number: 20110213051Abstract: The present invention relates to the use, in a compounding process for the preparation of pigmented impact-modified thermoplastic polymer compositions, of a mixture comprising A) from 60 to 98 parts by weight, based on the sum of components A and B, of at least one graft polymer, used in powder form, consisting of a rubber-elastic core and a grafted polymer component as the shell, B) from 2 to 40 parts by weight, based on the sum of components A and B, of at least one inorganic or organic liquid compound, and C) at least one pigment, characterised in that the graft polymer A and/or the pigment C absorbs or adsorbs the liquid inorganic or organic compound B, and the boiling point of component B at normal pressure is below the temperature of the polymer melt during the compounding.Type: ApplicationFiled: February 11, 2011Publication date: September 1, 2011Applicant: BAYER MATERIALSCIENCE AGInventors: Andreas SEIDEL, Hans-Jürgen THIEM, Eckhard WENZ
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Patent number: 7153929Abstract: Rubber-free copolymers of unsaturated monomers selected from the group comprising styrenes and vinyl cyanides are disclosed. The copolymers that contain 65 to 80 wt. %, of styrene and 20 to 35 wt. % of acrylonitrile are characterized in their low content of residual monomers and improved physical properties. Also disclosed are a process and a device for the preparation of these copolymers.Type: GrantFiled: June 18, 2001Date of Patent: December 26, 2006Assignee: Bayer AktiengesellschaftInventors: Alfred Eitel, Klemens Kohlgrüber, Frank Weyrich, Peter Rudolph, Hans-Jürgen Thiem, Michael König, Ricarda Nothelle, Helmut Meyer
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Publication number: 20050113493Abstract: A weatherable homogeneously colored thermoplastic molding composition is disclosed. The composition that contains polyalkylene terephthalate, aromatic polycarbonate,a graft polymer based on polybutadiene a graft polymer based on acrylate, a UV stabilizer and a coloring agent is suitable for making a variety of finished and semi finished products suitable for uses in the exterior or motor vehicles.Type: ApplicationFiled: November 15, 2004Publication date: May 26, 2005Inventors: Peter Persigehl, Friedemann Paul, Urs-Peter Dorsch, Hans-Jurgen Thiem
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Patent number: 6465570Abstract: The present invention relates to a continuous process for the production of impact resistance-modified thermoplastics. An elastomer, in particular a particulate graft polymer with a water moisture content of 1 to 50%, preferably 10 to 40%, is incorporated into a thermoplastics melt in a large volume kneader reactor. The mixing ratio of elastomer to thermoplastics melt is 4:1 to 1:4. The energy required to melt the elastomer and to evaporate the adhering water is added by heating the walls of the apparatus and via the kneading action of the installed rotating parts.Type: GrantFiled: July 12, 2000Date of Patent: October 15, 2002Assignee: Bayer AktiengesellschaftInventors: Ulrich Liesenfelder, Hans-Jürgen Thiem, Martin Ullrich
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Patent number: 6153692Abstract: The present invention relates to a continuous process for the production of impact resistance-modified thermoplastics. An elastomer, in particular a particulate graft polymer with a water moisture content of 1 to 50%, preferably 10 to 40%, is incorporated into a thermoplastics melt in a large volume kneader reactor. The mixing ratio of elastomer to thermoplastics melt is 4:1 to 1:4. The energy required to melt the elastomer and to evaporate the adhering water is added by heating the walls of the apparatus and via the kneading action of the installed rotating parts.Type: GrantFiled: March 19, 1998Date of Patent: November 28, 2000Assignee: Bayer AktiengesellschaftInventors: Ulrich Liesenfelder, Hans-Jurgen Thiem, Martin Ullrich
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Patent number: 5486583Abstract: A mixture which is suitable as a defoamer, especially for ABS latices, comprising (A) a C.sub.10 -C.sub.20 alcohol, (B) a mineral oil, (C) an ester from a thiodicarboxylic acid with 4 to 8 carbon atoms and a C.sub.10 -C.sub.20 alcohol and (D) a non-ionic emulsifier and a process for removing residual monomers from ABS latices using these defoaming mixtures.Type: GrantFiled: December 7, 1994Date of Patent: January 23, 1996Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Karl-Erwin Piejko, Hans-Jurgen Bunte, Hans-Jurgen Thiem
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Patent number: RE47079Abstract: A masterbatch comprising pigment and demolding agent is provided. The demolding agent is selected from the group comprising low molecular weight polyolefin oils, low molecular weight polyolefin waxes, montan waxes and aliphatic or aromatic carboxylic acid esters of fatty acids and/or fatty alcohols, wherein the pigment content of the masterbatch is from 3 to 70 wt. %, based on the total weight of the masterbatch. The masterbatch is suitable for preparation of a polymer composition having improved pigment dispersion.Type: GrantFiled: June 16, 2017Date of Patent: October 9, 2018Assignee: COVESTRO DEUTSCHLAND AGInventors: Andreas Seidel, Hans-Jurgen Thiem, Reiner Rudolf, Joerg Reichenauer, Thomas Eckel