Patents by Inventor Walter Goetz
Walter Goetz 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: 11559973Abstract: The present invention relates to a polymer film (P) containing a polyamide composition (PC) that comprises an amorphous polyamide (A) and a semicrystalline polyamide (B) and to a method for producing the polymer film (P). The present invention further relates to a method for packaging food products with the polymer film (P).Type: GrantFiled: January 31, 2017Date of Patent: January 24, 2023Inventors: Johannes Klaus Sprafke, Rolf Minkwitz, Walter Goetz
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Patent number: 11149124Abstract: The present invention relates to a polymer film (P), comprising at least one copolyamide, wherein the copolyamide has been prepared by polymerizing at least one lactam (A) and a monomer mixture (M). The present invention further relates to a process for producing the polymer film (P) and to the use of the polymer film (P) as packaging film.Type: GrantFiled: September 5, 2017Date of Patent: October 19, 2021Inventors: Rolf Minkwitz, Walter Goetz, Frank Reil, Florian Richter
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Publication number: 20200123335Abstract: The present invention relates to a polymer film (P), comprising at least one copolyamide, wherein the copolyamide has been prepared by polymerizing at least one lactam (A) and a monomer mixture (M). The present invention further relates to a process for producing the polymer film (P) and to the use of the polymer film (P) as packaging film.Type: ApplicationFiled: September 5, 2017Publication date: April 23, 2020Applicant: BASF SEInventors: Rolf MINKWITZ, Walter GOETZ, Frank REIL, Florian RICHTER
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Publication number: 20190224902Abstract: The present invention relates to a process for producing a polymer film (P) comprising at least one copolyamide by extrusion of the copolyamide through a ring die and subsequent stretching of the tube thus obtained by blowing in air. The present invention further relates to the polymer film (P) obtainable by the process of the invention and to a process for packing foods.Type: ApplicationFiled: September 5, 2017Publication date: July 25, 2019Applicant: BASF SEInventors: Walter GOETZ, Rolf MINKWITZ, Rolf-Egbert GRUETZNER, Florian RICHTER
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Publication number: 20190040216Abstract: The present invention relates to a polymer film (P) containing a polyamide composition (PC) that comprises an amorphous polyamide (A) and a semicrystalline polyamide (B) and to a method for producing the polymer film (P). The present invention further relates to a method for packaging food products with the polymer film (P).Type: ApplicationFiled: January 31, 2017Publication date: February 7, 2019Applicant: BASF SEInventors: Johannes Klaus SPRAFKE, Rolf MINKWITZ, Walter GOETZ
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Patent number: 6703475Abstract: A process for continuous production of copolyamides based on a lactam (I), a diamine (II) and a dicarboxylic acid (III) comprises reacting a mixture (IV) comprising a diamine (II), a dicarboxylic acid (III) and water in a first reaction zone at a pressure in the range from 1.3*105 to 2.5*105 Pa in the entry zone of the reaction zone and at a temperature above the melting point of polymer (V) to a conversion, based on the molar amounts of diamine (II) and dicarboxylic acid (III), of at least 80% to form a polymer (V), reacting a mixture (VI) comprising lactam (I) and water in a second reaction zone at a pressure in the range from 5*105 to 40*105 Pa and at a temperature above the melting point of polymer (VII) to a conversion, based on the molar amount of lactam (I), of at least 80% to form a polymer (VII), then reacting polymer (V) and polymer (VII) with each other in a third reaction zone at a pressure in the range from 1*105 to 1.Type: GrantFiled: May 13, 2002Date of Patent: March 9, 2004Assignee: BASF AktiengesellschaftInventors: Jürgen Deininger, Walter Götz, Alfons Ludwig, Gunter Pipper
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Patent number: 6254949Abstract: The shaped article consists of a) from 5 to 95% by weight of a molding composition A made from at least one thermoplastic polyamide, copolyamide or blends of these as component A1, fillers and/or reinforcing materials, if desired, as component A2, impact modifiers as component A3 and other additives and processing aids as component A4, and b) from 5 to 95% by weight of a molding composition B, made from at least one thermoplastic polyamide, copolyamide or blends of these as component B1, at least one crosslinked elastomeric polymer as component B2 and, if desired, other additives and processing aids as component B3, where, in the shaped article, segments of molding compositions A and B are connected to one another over a relatively large area. These shaped articles may be used in the motor vehicle sector, for example as air or coolant ducts.Type: GrantFiled: October 6, 1999Date of Patent: July 3, 2001Assignee: BASF AktiengesellschaftInventors: Alexander Glück, Walter Götz, Volker Lohrbächer, Graham Edmund Mc Kee, Mark Völkel
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Patent number: 6187877Abstract: A polymer based on a dicarboxylic acid and a diamine is prepared by polycondensation in an extruder, by (a) heating a mixture of a dicarboxylic acid having from 4 to 12 carbon atoms and a diamine having from 4 to 12 carbon atoms, which mixture is solid at room temperature and has a residual moisture content of less than 5% by weight, to a temperature in the range from 150 to 400° C. under autogenous pressure in a contrarotating twin-screw extruder to give a product A, (b) feeding the product A to a corotating twin-screw extruder, with the product A being exposed to a temperature in the range from 150 to 400° C. and residual water present and also water from the polycondensation being removed through the degassing openings, to give a product B, with the proviso that the corotating twin-screw extruder has at least two segments having different pressures.Type: GrantFiled: October 7, 1997Date of Patent: February 13, 2001Assignee: BASF AktiengesellschaftInventors: Walter Götz, Jürgen Hofmann, Michael Kopietz, Helmut Horle
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Patent number: 5659009Abstract: In a process for producing filler-containing thermoplastic molding compositions by mixing fillers with thermoplastics in the melt,a) the fillers are mixed in a mixing apparatus in the melt with a low molecular weight thermoplastic having a melt viscosity of at most 30 Pas (measured at 20.degree. C. above the melting point of the thermoplastic compound and at a shear gradient of 1,000 s.sup.-1),b) the product thus obtained is removed from the mixing apparatus, cooled and comminuted, andc) the comminuted product is then subjected in the solid phase to a post-condensation.Type: GrantFiled: November 17, 1995Date of Patent: August 19, 1997Assignee: BASF AktiengesellschaftInventors: Gunter Pipper, Walter Goetz, Claus Cordes, Josef Georg Floss, Guenter Mattern, Peter Hildenbrand, James Hurley, Karl Schlichting, Graham Edmund McKee, Gerd Blinne
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Patent number: 5504146Abstract: Thermoplastic molding materials contain, as essential components,A) 40-95% by weight of a partly aromatic copolyamide having a triamine content of less than 0.5% by weight, consisting essentially ofA.sub.1) 20-90% by weight of units derived from terephthalic acid and hexamethylenediamine,A.sub.2 5-50% by weight of units derived from .epsilon.-caprolactam andA.sub.3) 0-80% by weight of units derived from adipic acid and hexamethylenediamine, andB) 5-60% by weight of fibrous or particulate fillers or mixtures of these.Type: GrantFiled: July 26, 1994Date of Patent: April 2, 1996Assignee: BASF AktiengesellschaftInventors: Walter Goetz, Christoph Plachetta, Uwe Wolf, Gerd Blinne, Horst Reimann
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Patent number: 5496878Abstract: Thermoplastic molding materials are obtainable by mixingA) from 0.5 to 5% by weight of a carboxyl-containing polyethylene wax having an average molecular weight M.sub.n (number average value) of from 500 to 20,000 andB) from 0 to 50% by weight of fibrous or particulate fillers or mixtures in a melt ofC) from 40 to 99.5% by weight of a polyamide prepolymer having a viscosity number of from 40 to 80 ml/g followed by post-condensation in the solid phase.Type: GrantFiled: September 21, 1994Date of Patent: March 5, 1996Assignee: BASF AktiengesellschaftInventors: Walter Goetz, Walter Betz
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Patent number: 5410015Abstract: Thermoplastic polyamide molding materials contain, as essential components,A) from 39 to 99% by weight of a polyamide or a mixture of different polyamides andB) from 1 to 30% by weight of a phenol of the general formula IR.sub.3 E Iand E is a trivalent, aliphatic, C.sub.1 -C.sub.10 -hydrocarbon radical, triazinetriyl or a trivalent C.sub.6 - or C.sub.10 -aryl radical, andc) from 0 to 60% by weight, based on the amount of polyamide, of fibrous or particulate fillers or a mixture thereof.Type: GrantFiled: July 6, 1993Date of Patent: April 25, 1995Assignee: BASF AktiengesellschaftInventors: James Hurley, Walter Goetz, Gerd Blinne
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Patent number: 5401349Abstract: In a process for producing shaped articles by curing prepregs from fiber reinforced laminating resins by the autoclave method of vacuum bagging, the prepreg laminates are covered with a film of nylon 66 having a caprolactam content of from 3 to 30% by weight.Type: GrantFiled: March 8, 1994Date of Patent: March 28, 1995Assignee: BASF AktiengesellschaftInventors: Walter Goetz, Hans-Peter Weiss
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Patent number: 5391572Abstract: Thermoplastic molding compositions are obtainable by mixingA) from 0.5 to 5% by weight of a thermoplastic polyester elastomer andB) from 0 to 50% by weight of fibrous or particulate fillers or mixtures thereof into a melt ofC) from 40 to 99.5% by weight of a polyamide prepolymer having a viscosity number of from 40 to 80 ml/g and subsequent postcondensation in solid phase.Type: GrantFiled: May 11, 1994Date of Patent: February 21, 1995Assignee: BASF AktiengesellschaftInventors: Walter Goetz, Walter Betz, Gunter Pipper
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Patent number: 5332777Abstract: Unreinforced polyamide molding materials containA) from 60 to 100% by weight of a mixture consisting ofA.sub.1) from 97.5 to 99.85% by weight of one or more polyamides,A.sub.2) from 0.05 to 0.5% by weight of aluminum hydroxide andA.sub.3) from 0.1 to 2% by weight of one or more esters or amides of saturated or unsaturated aliphatic carboxylic acids of 10 to 40 carbon atoms with aliphatic saturated alcohols or amines of 2 to 40 carbon atomsand, based on the total weight of the polyamide molding material,B) from 0 to 40% by weight of a toughened polymer andC) from 0 to 10% by weight of conventional additives in effective amounts.Type: GrantFiled: September 25, 1992Date of Patent: July 26, 1994Assignee: BASF AktiengesellschaftInventors: Walter Goetz, Walter Betz
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Patent number: 5332778Abstract: A process for producing nylon-4,6 which is filled with a reinforcing agent by mixing a reinforcing agent with nylon-4,6 in the melt comprises the steps ofa) polycondensing a salt of 1,4-diaminobutane and adipic acid in the presence of excess 1,4-diaminobutane and water at polyamide-forming temperatures under superatmospheric pressure to give a precondensate having a relative viscosity .ltoreq.1.60,b) polycondensing the precondensate of a) in solid phase in the presence of steam at 220.degree.-270.degree. C. to obtain a nylon-4,6 having a relative viscosity of from 2.0 to 2.6,c) incorporating a reinforcing agent in the melt into nylon-4,6 from stage b) to obtain a nylon-4,6 filled with a reinforcing agent,d) polycondensing said filled nylon-4,6 in solid phase in the presence of steam at 220.degree.-270.degree. C. to a relative viscosity of at least 3.2.Type: GrantFiled: July 28, 1993Date of Patent: July 26, 1994Assignee: BASF AktiengesellschaftInventors: Gunter Pipper, Walter Goetz
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Patent number: 5326850Abstract: Molding materials are composed ofA) from 40 to 100% by weight of a copolyamide based ona.sub.1) from 1 to 20 mol%, based on the copoly- amide, of at least one monomer that contains at least one olefinic double bond (monomers a.sub.1) from the group of the.alpha..sub.1) olefinically unsaturated lactams,.alpha..sub.2) olefinically unsaturated aminocarboxylic acids,.alpha..sub.3) olefinically unsaturated dicarboxylic acids,.alpha..sub.4) olefinically unsaturated diamines, anda2) from 80 to 99 mol%, based on the copolyamide, of at least one monomer that contains no olefinic double bonds (monomers a2) from the group of the.beta..sub.1) lactams.beta..sub.2) aminocarboxylic acids,.beta..sub.3) dicarboxylic acids,.beta..sub.4) diamines, andB) from 0 to 35% by weight of an impact modifying rubber,C) from 0 to 50% by weight of a filler and/or reinforcing agent,D) from 0 to 20% by weight of a flame retardant, andE) from 0 to 10% by weight of further additives and processing aids.Type: GrantFiled: March 3, 1993Date of Patent: July 5, 1994Assignee: BASF AktiengesellschaftInventors: Walter Goetz, Brigitte Gareiss, Andreas Deckers, Petra Baierweck
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Patent number: 5266656Abstract: Molding materials are composed ofA) from 40 to 100% by weight, based on the total weight of the molding material, of a polyamide mixture based ona.sub.1) from 5 to 30% by weight, based on the total weight of the polyamide mixture, of at least one homo- or copolyamide that contains olefinic double bonds and comprises.alpha.) from 40 to 100 mol %, based on homo- or copolyamide, of at least one monomer that contains at least one olefinic double bond (monomers .alpha.) from the group of the.alpha..sub.1) olefinically unsaturated lactams,.alpha..sub.2) olefinically unsaturated aminocarboxylic acids,.alpha..sub.3) olefinically unsaturated dicarboxylic acids,.alpha..sub.4) olefinically unsaturated diamines, and.beta.) from 0 to 60 mol %, based on homo- or copolyamide, of at least one monomer that contains no olefinic double bonds (monomers .beta.) from the group of the.beta..sub.1) lactams.beta..sub.2) aminocarboxylic acids,.beta..sub.3) dicarboxylic acids,.beta..sub.4) diamines, anda.sub.Type: GrantFiled: March 3, 1993Date of Patent: November 30, 1993Assignee: BASF AktiengesellschaftInventors: Walter Goetz, Brigitte Gareiss, Andreas Deckers, Petra Baierweck
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Patent number: 5254620Abstract: Thermoplastic molding compositions are obtainable by mixingA) from 0.5 to 5% by weight of a thermoplastic polyester elastomer andB) from 0 to 50% by weight of fibrous or particulate fillers or mixtures thereof into a melt ofC) from 40 to 99.5% by weight of a polyamide prepolymer having a viscosity number of from 40 to 80 ml/g and subsequent postcondensation in solid phase.Type: GrantFiled: December 2, 1991Date of Patent: October 19, 1993Assignee: BASF AktiengesellschaftInventors: Walter Goetz, Walter Betz, Gunter Pipper
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Patent number: 5252661Abstract: Thermoplastic molding compositions contain as essential componentsA) 40-95% by weight of a partly aromatic copolyamide composed essentially ofA.sub.1) 20-90% by weight of units derived from terephthalic acid and hexamethylenediamine,A.sub.2) 0-50% by weight of units derived from .epsilon.-caprolactam andA.sub.3) 0-80% by weight of units derived from adipic acid and hexamethylenediamine,B) 5-60% by weight of an impact modifying rubber, and in additionC) 0-50% by weight of fibrous or particulate fillers or mixtures thereof.Type: GrantFiled: April 6, 1992Date of Patent: October 12, 1993Assignee: BASF AktiengesellschaftInventors: Horst Reimann, Gunter Pipper, Hans-Peter Weiss, Christoph Plachetta, Eckhard M. Koch, Gerd Blinne, Walter Goetz, Peter Steiert