Patents by Inventor Jürgen Rohrmann
Jürgen Rohrmann 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: 20240131802Abstract: An extrusion-based additive manufacturing process including the step of selectively depositing a molten thermoplastic material (P) on a film or sheet made from or containing a polymer blend obtained by melt blending a mixture made from or containing: (A) 60% to 98.8% by weight of a polyolefin; (B) 0.1% to 30% by weight of a compatibilizer; (C) 0.05% to 20% by weight of an amino resin; and (D) 0% to 5% by weight of an additive, wherein the amounts of (A), (B), (C) and (D) are based on the total weight of (A)+(B)+(C)+(D).Type: ApplicationFiled: January 26, 2022Publication date: April 25, 2024Applicants: Basell Polyolefine GmbH, Albert-Ludwigs-Universität FreiburgInventors: Carl Gunther Schirmeister, Erik Hans Licht, Karsten Schmitz, Yannic Kessler, Klaus Klemm, Jürgen Rohrmann, Dieter Langenfelder, Mikhail Dureev, Rolf Muelhaupt, Mirco Müller, Steer Peter, Kolano Benjamin
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Publication number: 20240051221Abstract: A process for producing articles with an extrusion-based additive manufacturing system using a consumable filament made from or containing a propylene polymer composition made from or containing: A) from 20% to 60% by weight of a heterophasic propylene copolymer; B) from 5% to 33% by weight of a propylene homopolymer or copolymer, wherein the copolymer contains up to 5% by weight of an alpha olefin; C) from 2% to 15% by weight of an elastomeric block copolymer made from or containing styrene; D) from 4% to 32% by weight of an elastomeric ethylene copolymer; E) from 5% to 50% by weight of a glass material as filler; and F) from 0.1% to 5% by weight of compatibilizer.Type: ApplicationFiled: September 28, 2020Publication date: February 15, 2024Applicants: Basell Polyolefine GmbH, Albert-Ludwigs-Universität FreiburgInventors: Carl Schirmeister, Karsten Schmitz, Yannic Kessler, Rainer Köhler, Erik Licht, Shahram Mihan, Jürgen Rohrmann, Dieter Langenfelder, Rolf Muelhaupt, Timo Hees
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Publication number: 20220402196Abstract: A consumable filament and process for using the consumable filament in an extrusion-based additive manufacturing system made from or containing a heterophasic polypropylene composition having a xylene soluble content ranging from 15 wt % to 50 wt %, a melt flow rate MFR L ranging from 0.5 to 100 g/10 min, an intrinsic viscosity of the fraction soluble in xylene at 25° C. ranging from 1.5 to 6.0 dl/g, and an ethylene content ranging from 10 wt % to 50 wt %.Type: ApplicationFiled: September 28, 2020Publication date: December 22, 2022Applicant: Basell Polyolefine GmbHInventors: Dieter Langenfelder, Jürgen Rohrmann, Karsten Schmitz, Carl Schirmeister, Yannic Kessler, Erik Licht, Christoph Callsen, Volker Altstädt
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Publication number: 20200190303Abstract: A polyolefin composition made from or containing (A) at least one polyolefin, (B) up to 50.0% by weight of a filler, and (C) from 0.05 to 2.5% by weight of at least one cyclodextrin, wherein the sum of (A)+(B)+(C) is equal to 100 weight percent, based on the total weight of the polyolefin composition.Type: ApplicationFiled: June 8, 2018Publication date: June 18, 2020Applicant: BASELL POLIOLEFINE ITALIA S.R.L.Inventors: JUERGEN ROHRMANN, MIKHAIL SERGEEVICH DUREEV
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Patent number: 10557028Abstract: A polyolefin composition made from or containing: (A) from 97.0 to 45.0 wt % of a propylene-1-hexene random copolymer, (B) from 2.0 to 50.0 wt % of fibers, and (Q) from 0.3 wt % to 5.0 wt % of a compatibilizer, the sum (A)+(B)+(Q) being 100, wherein (i) the copolymer has a content of 1-hexene derived units ranging from 0.6 wt % to 3.0 wt % with respect to the copolymer, (ii) the copolymer has the melt flow rate (MFR) measured according to the method ISO 1133 (230° C., 2.16 kg) ranging from 0.2 up to 40 g/10 min, (iii) the fibers are selected from the group consisting of glass fibers, carbon fibers, metal fibers, mineral fibers, ceramic fibers, and polymer fibers.Type: GrantFiled: November 6, 2017Date of Patent: February 11, 2020Assignee: Basell Poliolefine Italia S.r.l.Inventors: Thomas Mecklenburg, Klaus Klemm, Erik Hans Licht, Juergen Rohrmann, Paola Massari, Mara Destro, Marco Ciarafoni
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Publication number: 20190284384Abstract: A polyolefin composition made from or containing: (A) from 97.0 to 45.0 wt % of a propylene-1-hexene random copolymer, (B) from 2.0 to 50.0 wt % of fibers, and (Q) from 0.3 wt % to 5.0 wt % of a compatibilizer, the sum (A)+(B)+(Q) being 100, wherein (i) the copolymer has a content of 1-hexene derived units ranging from 0.6 wt % to 3.0 wt % with respect to the copolymer, (ii) the copolymer has the melt flow rate (MFR) measured according to the method ISO 1133 (230° C., 2.16 kg) ranging from 0.2 up to 40 g/10 min, (iii) the fibers are selected from the group consisting of glass fibers, carbon fibers, metal fibers, mineral fibers, ceramic fibers, and polymer fibers.Type: ApplicationFiled: November 6, 2017Publication date: September 19, 2019Applicant: BASELL POLIOLEFINE ITALIA S.R.L.Inventors: THOMAS MECKLENBURG, KLAUS KLEMM, ERIK HANS LICHT, JUERGEN ROHRMANN, PAOLA MASSARI, MARA DESTRO, MARCO CIARAFONI
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Publication number: 20150148437Abstract: The present invention relates to a new polypropylene composition for the production of foamed molded articles, such as finished parts for the automotive industry.Type: ApplicationFiled: May 22, 2013Publication date: May 28, 2015Inventors: Dieter Langenfelder, Jürgen Rohrmann
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Publication number: 20110136949Abstract: The invention relates to a glass fiber-reinforced molding composition composed of an olefin polymer, in particular a propylene polymer. The molding composition comprises an olefin polymer which contains 5-50% by weight of glass fibers which are bonded to the olefin polymer by means of a compatibilizer, and from 10?4 to 1% by weight, preferably from 10?3 to 10?1% by weight, of a phthalocyanine pigment as the nucleating agent. The low costs and the fact that even a very small fraction of the phthalocyanine pigment in the polymer leads to sufficient nucleation ensures extremely inexpensive production. The nucleation with the phthalocyanine pigment leads to an improvement in the impact strength, and also in the yield stress and tensile strain at break of the molding composition.Type: ApplicationFiled: January 28, 2011Publication date: June 9, 2011Applicant: Basell Poliolefine Italia s.r.l.Inventors: Thomas Mecklenburg, Jürgen Rohrmann
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Patent number: 7879931Abstract: The invention relates to a glass fiber-reinforced molding composition composed of an olefin polymer, in particular a propylene polymer. The molding composition comprises an olefin polymer which contains 5-50% by weight of glass fibers which are bonded to the olefin polymer by means of a compatibilizer, and from 10?4 to 1% by weight, preferably from 10?3 to 1031 1% by weight, of a phthalocyanine pigment as the nucleating agent. The low costs and the fact that even a very small fraction of the phthalocyanine pigment in the polymer leads to sufficient nucleation ensures extremely inexpensive production. The nucleation with the phthalocyanine pigment leads to an improvement in the impact strength, and also in the yield stress and tensile strain at break of the molding composition.Type: GrantFiled: October 19, 2004Date of Patent: February 1, 2011Assignee: Basell Polyolefine GmbHInventors: Thomas Mecklenburg, Jürgen Rohrmann
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Patent number: 7004865Abstract: A belt tensioning device for traction mechanisms includes a receiving and mounting housing, a pulley carrier pivotally connected to the receiving and mounting housing, a bearing supporting the pulley carrier relative to the receiving and mounting housing, and a spring located between the pulley carrier and the receiving and mounting housing for applying the tensioning force. The belt tensioning device, in normal operation, on the slack side between a generator and a main pulley can also be used when the slack side becomes the load side by a blocking mechanism which enables swinging motion of the pulley carrier relative to the receiving and mounting housing in a first direction, and limits or prevents such motion in a second, opposite direction.Type: GrantFiled: June 9, 2003Date of Patent: February 28, 2006Assignee: Muhr und Bender KGInventors: Thomas Berndt, Rudolf Bonse, Wolfgang Hamm, Joachim Jud, Manfred Jung, Thomas Muhr, Jürgen Rohrmann
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Patent number: 6713426Abstract: A syndiotactic polyolefin is obtained in a high yield by polymerization or copolymerization of an olefin of the formula Ra—CH═CH—Rb in the presence of a catalyst consisting of a metallocene of the formula I in which M1 is titanium, zirconium, vanadium, niobium or tantalum, and an aluminoxane. This polyolefin has a very high molecular weight, a very narrow molecular weight distribution and a very high syndiotactic index. Shaped articles produced from the polymer are distinguished by a high transparency, flexibility, tear resistance and an excellent surface gloss.Type: GrantFiled: June 5, 1995Date of Patent: March 30, 2004Assignee: Basell Polyolefine GmbHInventors: Andreas Winter, Jürgen Rohrmann, Martin Antberg, Volker Dolle, Walter Spaleck
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Patent number: 6479423Abstract: Process for the preparation of a polyolefin Olefins of the formula R11—CH═CH—R12 (R11, R12=H or C1-C14-alkyl) are polymerized in the presence of a catalyst consisting of at least one metallocene of the formula I (M=zirconium or hafnium) and an aluminoxane. Polymers having a high molecular weight are obtained in a high yield.Type: GrantFiled: June 7, 1995Date of Patent: November 12, 2002Assignee: Basell Polyolefine GmbHInventors: Volker Dolle, Martin Antberg, Jürgen Rohrmann, Walter Spaleck, Andreas Winter
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Patent number: 6429250Abstract: A talc-reinforced polypropylene molding composition with high impact strength comprising a) from 35 to 90% by weight of a propylene polymer (A) with a melt flow rate of from 15 to 100 g/10 min at 230° C. and under a load of 2.16 kg in accordance with ISO 1133 and a content of from 0 to 25% by weight of other C2-C10 1-alkenes, b) from 5 to 40% by weight of an ethylene polymer (B) with from 20 to 30% by weight of copolymerized C4-C10 1-alkenes, a melt flow rate of from 0.2 to 30 g/10 min at 190° C. and under a load of 2.16 kg in accordance with ISO 1133, a density of from 0.850 to 0.880 g/cm3 and a Mooney viscosity (MS 1+4; 121° C.) of from 5 to 50 in accordance with DIN 53523/T1, and c) from 5 to 25% by weight of talc whose average particle size by the Sedigraph method is from 1.0 to 10 &mgr;m.Type: GrantFiled: December 6, 1999Date of Patent: August 6, 2002Assignee: Targor GmbHInventor: Jürgen Rohrmann
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Patent number: 6413899Abstract: Isoblock polymers of 1-olefins with a narrow molecular weight distribution are obtained when 1-olefins are polymerized using a catalyst consisting of a chiral metallocene, containing bridges, of formula I: and an aluminoxane. The polymers have rubber-like properties.Type: GrantFiled: June 5, 1995Date of Patent: July 2, 2002Assignee: Basell Polyolefine GmbHInventors: Volker Dolle, Jürgen Rohrmann, Andreas Winter, Martin Antberg, Robert Klein
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Patent number: 6414096Abstract: Olefins of the formula R11—CH═CH—R12 (R11, R12=H or C1-C14-alkyl) are polymerized in the presence of a catalyst consisting of at least one metallocene of the formula I (M=zirconium or hafnium) and an aluminoxane. Polymers having a high molecular weight are obtained in a high yield.Type: GrantFiled: April 7, 1995Date of Patent: July 2, 2002Assignee: Basell Polyolefine GmbHInventors: Volker Dolle, Martin Antberg, Jürgen Rohrmann, Walter Spaleck, Andreas Winter
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Patent number: 6359095Abstract: A process for the preparation of an olefin polymer by polymerization or copolymerization of an olefin of the formula Ra—CH═CH—Rb, in which Ra and Rb are identical or different and are a hydrogen atom or a hydrocarbon radical having 1 to 14 carbon atoms, or Ra and Rb, together with the atoms connecting them, can form a ring, at a temperature of from −60 to 200° C., at a pressure of from 0.Type: GrantFiled: October 28, 1999Date of Patent: March 19, 2002Assignee: Basell Polyolefine GmbHInventors: Andreas Winter, Martin Antberg, Bernd Bachmann, Volker Dolle, Frank Küber, Jürgen Rohrmann, Walter Spaleck
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Patent number: RE37573Abstract: Process for the preparation of an olefin polymer using metallocenes containing specifically substituted indenyl ligands A highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I in which, preferably M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R5 is hydrogen or alkyl, R3 and R4 are alkyl, where R3, R4 and R5 may be halogenated, —(CR7R8)m—R6—(CR7R8)n— is a single- or multi-membered chain in which R6 may also be a (substituted) heteroatom, and m+n is zero or 1.Type: GrantFiled: February 19, 1999Date of Patent: March 5, 2002Assignee: Basell Polyolefin GmbHInventors: Andreas Winter, Frank Kueber, Walter Spaleck, Herbert Riepl, Wolfgang A. Herrmann, Volker Dolle, Juergen Rohrmann
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Patent number: RE39156Abstract: A process for the preparation of an olefin polymer by polymerization or copolymerization of an olefin of the formula Ra—CH?CH—Rb, in which Ra and Rb are identical or different and are a hydrogen atom or a hydrocarbon radical having 1 to 14 carbon atoms or Ra and Rb, together with the atoms connecting them, can form a ring, at a temperature of from ?60° to 200° C., at a pressure of from 0.Type: GrantFiled: January 19, 2000Date of Patent: July 4, 2006Assignee: Basell Polyolefine GmbHInventors: Andreas Winter, Martin Antberg, Bernd Bachmann, Volker Dolle, Frank Küber, Jürgen Rohrmann, Walter Spaleck
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Patent number: RE39532Abstract: The novel metallocenes of the formula I in which, preferably, M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R3 and R4 are hydrogen, R5 and R6 are alkyl or haloalkyl, —(CR8R9)m—R7—(CR8R9)n— is a single- or multi-membered chain in which R7 may also be a (substituted) hetero atom, m+n is zero or 1, and R10 is hydrogen, form, together with aluminoxanes as cocatalysts, a very effective catalyst system for the preparation of polyolefins of high stereospecificity and high melting point.Type: GrantFiled: July 17, 1997Date of Patent: March 27, 2007Assignee: Basell Polyolefine GmbHInventors: Andreas Winter, Martin Antberg, Walter Spaleck, Jürgen Rohrmann, Volker Dolle
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Patent number: RE39561Abstract: The novel metallocenes of the formula I in which, preferably, M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R3 and R4 are hydrogen, R5 and R6 are alkyl or haloalkyl, —(CR8R9)m—R7—(CR8R9)n— is a single- or multi-membered chain in which R7 may also be a (substituted) hetero atom, m+n is zero or 1, and R10 is hydrogen, form, together with aluminoxanes as cocatalysts, a very effective catalyst system for the preparation of polyolefins of high stereospecificity and high melting point.Type: GrantFiled: July 17, 1997Date of Patent: April 10, 2007Assignee: Basell Polyoefine GmbHInventors: Andreas Winter, Martin Antberg, Walter Spaleck, Jürgen Rohrmann, Volker Dolle