Patents by Inventor Hermann Prokschi
Hermann Prokschi 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: 11292156Abstract: The present invention provides a process for extruding and pelletising a propylene copolymer. The copolymer has a content of comonomer from 5 to 40% by mole, a melt flow rate MFR2 measured at 230° C. under a load of 2.16 kg of from 0.5 to 15 g/10 min and a content of cold xylene soluble material of from 20 to 60% by weight. The process comprises extruding the propylene copolymer through a die plate into an underwater pelletiser and cutting strands of the propylene copolymer into pellets in the underwater pelletiser, wherein the ratio of the mass flow rate of the propylene copolymer to the mass flow rate of the cooling water is from 0.020 to 0.060; and the propylene copolymer comprises a polymeric nucleating agent.Type: GrantFiled: December 7, 2015Date of Patent: April 5, 2022Assignee: Borealis AGInventors: Martina Sandholzer, Klaus Bernreitner, Hermann Braun, Hermann Prokschi, Ulrich Schreider, Frank Schroder, Thomas Hager, Katja Klimke, Markus Gahleitner
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Patent number: 11028238Abstract: The present invention is directed to a process for producing a modified olefin polymer having increased melt strength in an extruder. The process comprising the steps of: (A) contacting a stream comprising particles of an olefin polymer with a vapour stream of a functionally unsaturated compound in vapour phase thereby producing a first mixed stream; (B) passing the first mixed stream to an extruder; (C) melting the polymer particles of the first mixed stream in the extruder; (D) introducing a stream of a free radical generator either into the first mixed stream or into the extruder; and (E) extruding the first mixed stream and the free radical generator at a temperature which is greater than the decomposition temperature of the free radical generator and the melting temperature of the olefin polymer but less than the decomposition temperature of the olefin polymer thereby producing the modified olefin polymer in the extruder.Type: GrantFiled: April 8, 2016Date of Patent: June 8, 2021Assignee: BOREALIS AGInventors: Hermann Braun, Rebeca Reguillo Carmona, Sascha Kaltenbacher, Katja Klimke, Udo Muster, Hermann Prokschi
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Patent number: 10457766Abstract: The invention relates to a propylene homopolymer or copolymer having a comonomer in the copolymer selected from ethylene, C4-C20-alpha olefin, said propylene homopolymer or copolymer being free of phthalic compound. It further relates to a long-chain branched propylene homopolymer or copolymer (b-PP) having a comonomer in the copolymer selected from ethylene, C4-C20-alpha olefins, said long-chain branched propylene homopolymer or copolymer (b-PP) being free of phthalic compound. As well as their production processes and uses.Type: GrantFiled: November 4, 2015Date of Patent: October 29, 2019Assignee: BOREALIS AGInventors: Hermann Braun, Jingbo Wang, Markus Gahleitner, Hermann Prokschi, Johanna Lilja
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Patent number: 10316177Abstract: The invention relates to a propylene homopolymer or copolymer having a comonomer in the copolymer selected from ethylene, C4-C20-alpha olefin, said propylene homopolymer or copolymer being free of phthalic compound. It further relates to a long-chain branched propylene homopolymer or copolymer (b-PP) having a comonomer in the copolymer selected from ethylene, C4-C20-alpha olefins, said long-chain branched propylene homopolymer or copolymer (b-PP) being free of phthalic compound. As well as their production processes and uses.Type: GrantFiled: November 4, 2015Date of Patent: June 11, 2019Assignee: BOREALIS AGInventors: Hermann Braun, Jingbo Wang, Markus Gahleitner, Hermann Prokschi, Pauli Leskinen, Johanna Lilja
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Patent number: 10179851Abstract: The present invention relates to a process for providing a polypropylene composition comprising a branched polypropylene (b-PP), a polypropylene composition as well as a film comprising the polypropylene composition.Type: GrantFiled: May 16, 2014Date of Patent: January 15, 2019Assignee: Borealis AGInventors: Hermann Prokschi, Katja Klimke, Hermann Braun
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Publication number: 20180334559Abstract: The present invention relates to a process for providing a polypropylene composition comprising a branched polypropylene (b-PP), a polypropylene composition as well as a film comprising the polypropylene composition.Type: ApplicationFiled: May 23, 2018Publication date: November 22, 2018Inventors: Hermann Prokschi, Katja Klimke, Hermann Braun
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Publication number: 20180273740Abstract: The invention relates to a propylene homopolymer or copolymer having a comonomer in the copolymer selected from ethylene, C4-C20-alpha olefin, said propylene homopolymer or copolymer being free of phthalic compound. It further relates to a long-chain branched propylene homopolymer or copolymer (b-PP) having a comonomer in the copolymer selected from ethylene, C4-C20-alpha olefins, said long-chain branched propylene homopolymer or copolymer (b-PP) being free of phthalic compound. As well as their production processes and uses.Type: ApplicationFiled: November 4, 2015Publication date: September 27, 2018Inventors: Hermann Braun, Jingbo Wang, Markus Gahleitner, Hermann Prokschi, Pauli Leskinen, Johanna Lilja
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Publication number: 20180142068Abstract: The present invention is directed to a process for producing a modified olefin polymer having increased melt strength in an extruder. The process comprising the steps of: (A) contacting a stream comprising particles of an olefin polymer with a vapour stream of a functionally unsaturated compound in vapour phase thereby producing a first mixed stream; (B) passing the first mixed stream to an extruder; (C) melting the polymer particles of the first mixed stream in the extruder; (D) introducing a stream of a free radical generator either into the first mixed stream or into the extruder; and (E) extruding the first mixed stream and the free radical generator at a temperature which is greater than the decomposition temperature of the free radical generator and the melting temperature of the olefin polymer but less than the decomposition temperature of the olefin polymer thereby producing the modified olefin polymer in the extruder.Type: ApplicationFiled: April 8, 2016Publication date: May 24, 2018Applicant: BOREALIS AGInventors: Hermann Braun, Rebeca Reguillo Carmona, Sascha Kaltenbacher, Katja Klimke, Udo Muster, Hermann Prokschi
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Patent number: 9920190Abstract: The present invention relates to a multimodal polyethylene composition which can be manufactured into pipes showing improved pressure resistance comprising a high density multimodal ethylene polymer component (A) having a density of at least 930 kg/m3, and a MFR21 of not more than 15 g/10 min, wherein said composition exhibits a LAOS-NLF defined as L ? ? A ? ? O ? ? S - N ? ? L ? ? F = ? G 1 ? G 3 ? ? where G1?—first order Fourier Coefficient G3?—third order Fourier Coefficient of at least 1.7. Such a polyethylene composition is useful for the manufacture of pressure pipes that exhibit improved pressure resistance and creep resistance and do not undergo sagging. Further disclosed is a process for the production of a pipe using such a multimodal polyethylene composition and a pipe comprising such a multimodal polyethylene composition.Type: GrantFiled: July 6, 2015Date of Patent: March 20, 2018Assignee: BOREALIS AGInventors: Yi Liu, Alexandra Romina Albunia, Tanja Piel, Qizheng Dou, Hermann Prokschi
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Publication number: 20170341267Abstract: The present invention provides a process for extruding and pelletising a propylene copolymer. The copolymer has a content of comonomer from 5 to 40% by mole, a melt flow rate MFR2 measured at 230° C. under a load of 2.16 kg of from 0.5 to 15 g/10 min and a content of cold xylene soluble material of from 20 to 60% by weight. The process comprises extruding the propylene copolymer through a die plate into an underwater pelletiser and cutting strands of the propylene copolymer into pellets in the underwater pelletiser, wherein the ratio of the mass flow rate of the propylene copolymer to the mass flow rate of the cooling water is from 0.020 to 0.060; and the propylene copolymer comprises a polymeric nucleating agent.Type: ApplicationFiled: December 7, 2015Publication date: November 30, 2017Inventors: Martina SANDHOLZER, Klaus BERNREITNER, Hermann BRAUN, Hermann PROKSCHI, Ulrich SCHREIDER, Frank SCHRODER, Thomas HAGER, Katja KLIMKE, Markus GAHLEITNER
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Publication number: 20170320986Abstract: The invention relates to a propylene homopolymer or copolymer having a comonomer in the copolymer selected from ethylene, C4-C20-alpha olefin, said propylene homopolymer or copolymer being free of phthalic compound. It further relates to a long-chain branched propylene homopolymer or copolymer (b-PP) having a comonomer in the copolymer selected from ethylene, C4-C20-alpha olefins, said long-chain branched propylene homopolymer or copolymer (b-PP) being free of phthalic compound. As well as their production processes and uses.Type: ApplicationFiled: November 4, 2015Publication date: November 9, 2017Applicant: Borealis AGInventors: Hermann Braun, Jingbo Wang, Markus Gahleitner, Hermann Prokschi, Johanna Lilja
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Publication number: 20170313797Abstract: The present invention relates to a polypropylene composition comprising a branched polypropylene (b-PP) having high melt strength (HMS). Furthermore, the present invention also relates to a method for providing the corresponding polypropylene having composition comprising the branched polypropylene (b-PP) and to a foam with the polypropylene composition comprising the branched polypropylene (b-PP). The branched polypropylene (b-PP) is based on a random copolymer with a small amount of ethylene.Type: ApplicationFiled: November 4, 2015Publication date: November 2, 2017Applicant: BOREALIS AGInventors: Katja Klimke, Hermann Bruan, Jingbo Wang, Markus Gahleitner, Hermann Prokschi, Pauli Leskinen, Johanna Lilja
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Publication number: 20170152376Abstract: The present invention relates to a multimodal polyethylene composition which can be manufactured into pipes showing improved pressure resistance comprising a high density multimodal ethylene polymer component (A) having a density of at least 930 kg/m3, and a MFR21 of not more than 15 g/10 min, wherein said composition exhibits a LAOS-NLF defined as L ? ? A ? ? O ? ? S - N ? ? L ? ? F = ? G 1 ? G 3 ? ? where G1?—first order Fourier Coefficient G3?—third order Fourier Coefficient of at least 1.7. Such a polyethylene composition is useful for the manufacture of pressure pipes that exhibit improved pressure resistance and creep resistance and do not undergo sagging. Further disclosed is a process for the production of a pipe using such a multimodal polyethylene composition and a pipe comprising such a multimodal polyethylene composition.Type: ApplicationFiled: July 6, 2015Publication date: June 1, 2017Applicant: BOREALIS AGInventors: Yi LIU, Alexandra Romina ALBUNIA, Tanja PIEL, Qizheng DOU, Hermann PROKSCHI
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Publication number: 20160108220Abstract: The present invention relates to a process for providing a polypropylene composition comprising a branched polypropylene (b-PP), a polypropylene composition as well as a film comprising the polypropylene composition.Type: ApplicationFiled: May 16, 2014Publication date: April 21, 2016Applicant: Borealis AGInventors: Hermann Prokschi, Katja Klimke, Hermann Braun
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Patent number: 9290600Abstract: Process for providing a polypropylene composition comprising a branched polypropylene in which a polypropylene with a melt flow rate MFR2 (230° C.) of more than 0.5 g/10 min is reacted with a thermally decomposing free radical-forming agent and optionally with a bifunctionally unsaturated monomer obtaining thereby the branched polypropylene, wherein the polypropylene composition has a F30 melt strength of more than 20.0 cN and a V30 melt extensibility of more than 200 mm/s.Type: GrantFiled: July 19, 2013Date of Patent: March 22, 2016Assignee: Borealis AGInventors: Hermann Prokschi, Hermann Braun
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Publication number: 20150203621Abstract: Process for providing a polypropylene composition comprising a branched polypropylene in which a polypropylene with a melt flow rate MFR2 (230° C.) of more than 0.5 g/10 min is reacted with a thermally decomposing free radical-forming agent and optionally with a bifunctionally unsaturated monomer obtaining thereby the branched polypropylene, wherein the polypropylene composition has a F30 melt strength of more than 20.0 cN and a V30 melt extensibility of more than 200 mm/s.Type: ApplicationFiled: July 19, 2013Publication date: July 23, 2015Inventors: Hermann Prokschi, Hermann Braun
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Patent number: 8316906Abstract: The invention relates to a device and a method for impregnating filaments, wherein the filaments form a roving. The device comprises a barrel (10) having at least one groove (12) formed in circumferential direction of the barrel, an inner space formed along the center axis of the barrel, and at least one recess (16) which forms a connection between the inner space and the groove. The recess includes a cylindrical section (16a), a conical section (16b) and a pocket section (16c). By means of said device and according to the method, a polymer material can be pressed successively from the inner space through at least the cylindrical section and the conical section into the groove to impregnate the filaments of the roving which is drawn through the groove.Type: GrantFiled: December 2, 2008Date of Patent: November 27, 2012Assignee: Borealis Technology OyInventors: Hermann Prokschi, Siegfried Westmüller
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Publication number: 20100263785Abstract: The invention relates to a device and a method for impregnating filaments, wherein the filaments form a roving. The device comprises a barrel (10) having at least one groove (12) formed in circumferential direction of the barrel, an inner space formed along the centre axis of the barrel, and at least one recess (16) which forms a connection between the inner space and the groove. The recess includes a cylindrical section (16a), a conical section (16b) and a pocket section (16c). By means of said device and according to the method, a polymer material can be pressed successively from the inner space through at least the cylindrical section and the conical section into the groove to impregnate the filaments of the roving which is drawn through the groove.Type: ApplicationFiled: December 2, 2008Publication date: October 21, 2010Applicant: Borealis Technology OyInventor: Hermann Prokschi
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Patent number: 5395576Abstract: Process for producing fiber-reinforced thermoplastics in a double-belt press in which the lateral sealing of the press space is formed from a porous profile which is mechanically supported against being laterally forced out and moistened with water before it enters the press.Type: GrantFiled: October 5, 1993Date of Patent: March 7, 1995Assignee: PCD Polymers Gesellschaft m.b.H.Inventors: Wilfried Blauhut, Hermann Prokschi, Michael Begemann, Gunther Erlacher, Wolfgang Hasler