Patents by Inventor Georg Grässel
Georg Grässel 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: 11499028Abstract: Expandable, blowing agent-containing pellets based on high temperature thermoplastics having a glass transition temperature according to ISO 11357-2-1999 of at least 180° C., wherein the expandable, blowing agent-containing pellets comprise at least one nucleating agent and have a poured density according to DIN ISO 697:1982 in the range from 400 to 900 kg/m3 and a mass in the range from 1 to 5 mg/pellet, processes for production thereof and foam particles obtainable therefrom having a glass transition temperature according to ISO 11357-2-1999 of at least 180° C., wherein the expanded foam particles comprise at least one nucleating agent and have a poured density according to DIN ISO 697:1982 in the range from 10 to 200 kg/m3, and particle foams obtainable therefrom and the use thereof for producing components for aviation.Type: GrantFiled: July 25, 2018Date of Patent: November 15, 2022Assignee: BASF SEInventors: Isa Alexandra Queiroz Da Fonseca, Peter Gutmann, Judith Braeuer, Georg Graessel, Rainer Birli, Markus Schmidt, Sibylle Burkhart, Angelika Keller, Florian Hennenberger
-
Publication number: 20200148851Abstract: Expandable, blowing agent-containing pellets based on high temperature thermoplastics having a glass transition temperature according to ISO 11357-2-1999 of at least 180° C., wherein the expandable, blowing agent-containing pellets comprise at least one nucleating agent and have a poured density according to DIN ISO 697:1982 in the range from 400 to 900 kg/m3 and a mass in the range from 1 to 5 mg/pellet, processes for production thereof and foam particles obtainable therefrom having a glass transition temperature according to ISO 11357-2-1999 of at least 180° C., wherein the expanded foam particles comprise at least one nucleating agent and have a poured density according to DIN ISO 697:1982 in the range from 10 to 200 kg/m3, and particle foams obtainable therefrom and the use thereof for producing components for aviation.Type: ApplicationFiled: July 25, 2018Publication date: May 14, 2020Inventors: Isa Alexandra QUEIROZ DA FONSECA, Peter GUTMANN, Judith BRAEUER, Georg GRAESSEL, Rainer BIRLI, Markus SCHMIDT, Sibylle BURKHART, Angelika KELLER, Florian HENNENBERGER
-
Publication number: 20180195524Abstract: The invention relates to a compressor wheel for a high-speed compressor composed of a polymer material, having a wheel front side (6), a wheel rear side (11) and a wheel hub (3), wherein the wheel front side (6) has a curvature, by virtue of which the distance between a plane extending radially through the outer circumference (15) of the wheel front side (6) and the surface of the wheel front side (6) increases from the outer circumference (15) toward the wheel hub (3), and guide vanes (7) are arranged on the wheel front side (6). The wheel hub (3) projects in an axial direction on the wheel rear side (11), and reinforcing ribs (13) extend from the wheel hub (3) toward the outer circumference (15), wherein the distance between a plane extending radially through the outer circumference (15) of the wheel rear side (11) and the trailing edge (19) of the reinforcing ribs (13) increases from the outer circumference (15) of the wheel rear side (11) toward the wheel hub (3).Type: ApplicationFiled: June 23, 2016Publication date: July 12, 2018Applicant: BASF SEInventors: Florian HENNENBERGER, Georg GRAESSEL, Gerhard BOHRMANN, Daniel HOFER
-
Publication number: 20130140728Abstract: Thermoplastic particle foams which have cells having a mean cell size in the range from 20 to 500 ?m and in which the cell membranes have a nanocellular or fibrous structure having pore or fiber diameters below 1500 nm, and also processes for producing them.Type: ApplicationFiled: January 29, 2013Publication date: June 6, 2013Applicant: BASF SEInventors: Carsten Schips, Klaus Hahn, Georg Gräßel, Daniela Longo, Jens Aßmann, Andreas Gietl
-
Publication number: 20130059933Abstract: A process for producing an expandable pelletized polymeric material which comprises: a) providing a polymer component, consisting of a styrene polymer component having a glass transition temperature of ?130° C., formed from and one or more thermoplastic polymers selected from the group consisting of aromatic polyethers; polyolefins; polyacrylates; polycarbonates; polyesters; polyamides; polyether sulfones; polyether ketones and polyether sulfides, (b) heating the polymer component to form a polymer melt, (c) introducing a blowing agent component into the polymer melt to form a foamable melt, (d) homogenizing the mixture, (f) extruding the blowing agent-containing polymer melt through a die plate, (g) pelletizing the blowing agent-containing melt in a liquid-filled chamber to form a pelletized material.Type: ApplicationFiled: August 30, 2012Publication date: March 7, 2013Applicant: BASF SEInventors: Holger Ruckdäschel, Alexandre Terrenoire, Jan Kurt Walter Sandler, Klaus Hahn, Ingo Bellin, Georg Grässel, Martin Weber
-
Publication number: 20120164425Abstract: A thermoplastic extruded foam sheet having a thickness in the range from 15 mm to 200 mm and cells having an average cell size in the range from 20 to 2000 ?m, wherein the cell membranes have a fibrous structure with fiber diameters below 1500 nm is useful for example as insulating material, especially in the building construction industry.Type: ApplicationFiled: December 22, 2011Publication date: June 28, 2012Applicant: BASF SEInventors: Holger Ruckdäschel, Jens Aßmann, Carsten Schips, Klaus Hahn, Georg Gräßel, Jürgen Lambert, Christof Zylla, Peter Merkel, Geert Janssens
-
Publication number: 20110316198Abstract: The invention relates to elastic expanded polymer foams and also a process for producing expanded polymer foams by sintering a mixture comprising foam particles P1 and P2 composed of different thermoplastic polymers or polymer blends, wherein the foam particles P1 are obtained by prefoaming expandable, thermoplastic polymer particles comprising A) from 45 to 97.9 percent by weight of a styrene polymer, B1) from 1 to 45 percent by weight of a polyolefin having a melting point in the range from 105 to 140° C., B2) from 0 to 25 percent by weight of a polyolefin having a melting point below 105° C., C1) from 0.1 to 25 percent by weight of a styrene-butadiene or styrene-isoprene block copolymer, C2) from 0.0 to 10 percent by weight of a styrene-ethylene-butylene block copolymer, D) from 1 to 15 percent by weight of a blowing agent, E) from 0 to 5 percent by weight of a nucleating agent, where the sum of A) to E) is 100% by weight.Type: ApplicationFiled: March 1, 2010Publication date: December 29, 2011Applicant: BASF SEInventors: Carsten Schips, Jens Assmann, Georg Grässel, Geert Janssens, Maximillan Hofmann, Holger Ruckdäschel, Jürgen Lambert, Christof Zylla
-
Publication number: 20110268972Abstract: Expandable, thermoplastic polymer bead material composed of a multiphase polymer mixture which comprises blowing agent and has at least one continuous phase of a thermoplastic polymer, where at least two different disperse phases P1 and P2 are present, disperse in the continuous phase, and also to processes for its production, and to use for the production of elastic molded foams.Type: ApplicationFiled: December 15, 2009Publication date: November 3, 2011Applicant: BASF SEInventors: Carsten Schips, Klaus Hahn, Maximilian Hofmann, Holger Ruckdäschel, Jens Assmann, Geert Janssens, Georg Gräßel, Jurgen Lambert, Christof Zylla
-
Publication number: 20110269858Abstract: Expandable, thermoplastic polymer bead material, comprising A) from 45 to 97.8 percent by weight of a styrene polymer, B1) from 1 to 45 percent by weight of a polyolefin with a melting point in the range from 105 to 140° C., B2) from 0 to 25 percent by weight of a polyolefin with a melting point below 105° C., C1) from 0.1 to 25 percent by weight of a block or graft copolymer with weight-average molar mass Mw of at least 100,000 g/mol, comprising a) at least one block S composed of from 95 to 100% by weight of vinylaromatic monomers and from 0 to 5% by weight of dienes, and b) at least one copolymer block (S/B)A composed of from 63 to 80% by weight of vinylaromatic monomers and from 20 to 37% by weight of dienes, with glass transition temperature TgA in the range from 5 to 30° C.Type: ApplicationFiled: December 16, 2009Publication date: November 3, 2011Applicant: BASF SEInventors: Carsten Schips, Klaus Hahn, Konrad Knoll, Holger Ruckdäschel, Jens Assmann, Georg Grässel, Maximilian Hofmann
-
Publication number: 20110065819Abstract: Expandable, thermoplastic polymer bead material, comprising A) from 45 to 98.8 percent by weight of a styrene polymer, B1) from 1 to 45 percent by weight of a polyolefin whose melting point is in the range from 105 to 140° C., B2) from 0 to 25 percent by weight of a polyolefin whose melting point is below 105° C., C1) from 0.1 to 9.9 percent by weight of a styrene-butadiene block copolymer, C2) from 0.1 to 9.9 percent by weight of a styrene-ethylene-butylene block copolymer, D) from 1 to 15 percent by weight of a blowing agent, E) from 0 to 5 percent by weight of a nucleating agent where the entirety of A) to E) gives 100% by weight, and also processes for production of the same, and use for the production of elastic molded-foam moldings.Type: ApplicationFiled: March 12, 2009Publication date: March 17, 2011Applicant: BASF SE Patents, Trademarks and LicensesInventors: Carsten Schips, Klaus Hahn, Georg Grässel, Daniela Longo-Schedel, Jens Assmann, Andreas Gietl, Konrad Knoll, Holger Ruckdäschel, Maximilian Hofmann, Christof Zylla, Jürgen Lambert, Geert Janssens
-
Publication number: 20100143697Abstract: Thermoplastic particle foams which have cells having a mean cell size in the range from 20 to 500 ?m and in which the cell membranes have a nanocellular or fibrous structure having pore or fiber diameters below 1500 nm, and also processes for producing them.Type: ApplicationFiled: April 8, 2008Publication date: June 10, 2010Applicant: BASF SE Patents, Trademarks and LicensesInventors: Carsten Schips, Klaus Hahn, Georg Gräßel, Daniela Longo, Jens Aßmann, Andreas Gietl