Patents by Inventor Hans-Joachim Muller
Hans-Joachim Muller 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: 6235069Abstract: Copolymer comprising ethylene units and vinyl formate units, the content of free vinyl formate in the polymer preferably being not more than 5000 ppm, based on the weight of the copolymer, a process for its preparation, and its use as flow improver, especially in petroleum distillates, preferably fuel and propellant compositions, especially petroleum middle distillates, and also a fuel and propellant composition comprising a principal quantity of a fuel and propellant and that quantity of a copolymer as above which is effective in improving the flow properties.Type: GrantFiled: May 24, 2000Date of Patent: May 22, 2001Assignee: BASF AktiengesellschaftInventors: Andreas Deckers, Bernd Wenderoth, Thomas Rühl, Hans-Joachim Müller, Roger Klimesch
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Patent number: 6159369Abstract: Process for the partial modification of porous, hydrophilitic filter membranes, of filter membranes treated in such manner and filter modules equipped with such filter membranes. When hydrophilic filter membranes are embedded in hydrophobic securing components of filter modules, the membrane filters are hydrophobized beyond the embedding area in an edge region, so that this edge region, that can no longer be wetted by water, forms an air by-pass when the filter modules are tested, rendering thus impossible that the filter modules can be tested. The novel process is intended to modify the edge regions in such a manner that, even after partial areas have been embedded in a hydrophobic polymer material, they remain porous and hydrophilic over the whole of their effective area.Type: GrantFiled: July 25, 1996Date of Patent: December 12, 2000Assignee: Seitz-Filter-Werke GmbH und Co.Inventors: Gerhard Strohm, Hans-Joachim Muller, Markus Kirschner, Udo Holzki
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Patent number: 6118034Abstract: In the process for the selective hydrogenation of dienes in diene-containing feed streams, a diene-containing feed stream is hydrogenated over a nickel-containing precipitated catalyst at from 40 to 100.degree. C., a pressure of from 3 to 20 bar and a WHSV (weight hourly space velocity) of from 1 to 10 kg/(l.times.h) in the presence of free hydrogen.Type: GrantFiled: September 3, 1998Date of Patent: September 12, 2000Assignee: BASF AktiengesellschaftInventors: Maximilian Vicari, Marc Walter, Ekkehard Schwab, Hans-Joachim Muller, Germain Kons, Stephan Dilling, Peter Polanek
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Patent number: 6099601Abstract: Copolymer comprising ethylene units and vinyl formate units, the content of free vinyl formate in the polymer preferably being not more than 5000 ppm, based on the weight of the copolymer, a process for its preparation, and its use as flow improver, especially in petroleum distillates, preferably fuel and propellant compositions, especially petroleum middle distillates, and also a fuel and propellant composition comprising a principal quantity of a fuel and propellant and that quantity of a copolymer as above which is effective in improving the flow properties.Type: GrantFiled: February 20, 1997Date of Patent: August 8, 2000Assignee: BASF AktiengesellschaftInventors: Andreas Deckers, Bernd Wenderoth, Thomas Ruhl, Hans-Joachim Muller, Roger Klimesch
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Patent number: 6087536Abstract: A process for preparing indene derivatives of the general formula I ##STR1## where R.sup.1 is a C.sub.1 -C.sub.10 -alkyl radical, a phenyl radical or a C.sub.1 -C.sub.4 -alkyl-substituted phenyl radical andA is a bridge which, together with the adjacent carbons, forms a six-membered aromatic or a five- or six-membered heteroaromatic or carbocyclic ring onto which a further aromatic ring may be fused,comprises reacting II with III ##STR2## (X=chlorine, bromine, iodine) in the presence of a Friedel-Crafts catalyst to give IV ##STR3## which is then dehydrogenated to I.Type: GrantFiled: August 22, 1997Date of Patent: July 11, 2000Assignee: BASF AktiengesellschaftInventors: Hans-Joachim Muller, Peter Trubenbach, Bernhard Rieger, Jurgen Matthaus Wagner, Ulf Dietrich
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Patent number: 6048508Abstract: The present invention is directed to a process for simultaneously obtaining pure carbon monoxide and pure hydrogen in a steam reformer plant for hydrogen or ammonia generation, having a primary reformer, a secondary reformer and downstream thereof, a CO conversion stage. A part gas stream of the synthesis gas stream, which is discharged from the secondary reformer having a CO content of between 2 and 20 mol. % and is at a temperature of from 200 to 500.degree. C. and a pressure between 15 and 50 bar, is removed between the secondary reformer and the CO conversion stage. The part gas stream is then is cooled to a temperature below 100.degree. C., thereby condensing out the major part of the steam contained in the gas stream. The remaining raw synthesis gas stream is then guided by way of a multistage gas separation plant in which the gas components H.sub.2, residual steam, CH.sub.4, CO.sub.2 and optionally N.sub.2 are separated, either individually or together, from the CO.Type: GrantFiled: June 18, 1997Date of Patent: April 11, 2000Assignee: Bayer AktiengesellschaftInventors: Hans-Ulrich Dummersdorf, Hans-Joachim Muller, Dieter Grenner, Gerhard Moormann
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Patent number: 6037443Abstract: Linear, thermoplastic, elastomneric copolymers of carbon monoxide and olefinically unsaturated compounds have an alternating sequence of repeating units and an average molecular weight Mw of the copolymers of from 80,000 to 1,200,000, binary, linear, alternating carbon monoxide/ethylene copolymers being excluded.Type: GrantFiled: September 3, 1998Date of Patent: March 14, 2000Assignee: BASF AktiengesellschaftInventors: Hans-Joachim Muller, Hans Christoph Horn, Roland Spahl, Bernhard Rieger, Adnan S. Abu-Surrah
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Patent number: 5976202Abstract: Reaction products of polyolefins having predominantly a terminal double bond and a number average molecular weight of from 250 to 10,000, which possess an aliphatic hydrocarbon skeleton which is straight-chain or carries C.sub.1 -C.sub.4 -alkyl side chains, with from 1 to 10 mol, per equivalent of double bond, of one or more vinyl esters I ##STR1## are obtainable by reacting the stated polyolefins with the vinyl esters I in the presence of a free radical initiator at from 80 to 200.degree. C., it being possible for these reaction products subsequently to have been hydrolyzed to the corresponding alcohols or converted into the corresponding amines by reductive amination with amines II ##STR2## .Type: GrantFiled: July 20, 1995Date of Patent: November 2, 1999Assignee: BASF AktiengesellschaftInventors: Hans Peter Rath, Helmut Mach, Harald Schwahn, Hans-Joachim Muller, Wolfgang Reif, Thomas Ruhl
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Patent number: 5919275Abstract: Fuel or lubricant additives based on reaction products of an ethylenically unsaturated poly-1-alkene derived from one or more 1-alkenes of 3 to 24 carbon atoms and from 0 to 50% by weight of ethene, processes for their preparation and fuel or lubricant compositions containing these additives are described.Type: GrantFiled: October 15, 1996Date of Patent: July 6, 1999Assignee: BASF AktiengesellschaftInventors: Knut Oppenlander, Jurgen Mohr, Hans-Joachim Muller, Dietmar Posselt, Wolfgang Gunther
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Patent number: 5756621Abstract: Polymers and oligomers of olefinically unsaturated C.sub.2 -C.sub.20 -hydrocarbons having one or two 2-oxazolinyl end groups have the structure (I) ##STR1## where A is a polymer or oligomer radical derived from the olefinically unsaturated C.sub.2 -C.sub.20 -hydrocarbons and the radicals R can be identical or different and have the following meanings:hydrogen,C.sub.1 -C.sub.10 -alkyl,C.sub.6 -C.sub.10 -aryl,C.sub.3 -C.sub.6 -cycloalkyl.Type: GrantFiled: July 26, 1996Date of Patent: May 26, 1998Assignee: BASF AktiengesellschaftInventors: Joachim Rosch, Hans-Joachim Muller, Arthur Hohn, Rolf Muelhaupt, Christof Woerner
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Patent number: 5747616Abstract: Ethylene-based copolymers which are suitable as flow improvers for mineral oil middle distillates are composed ofa) from 50 to 94% by weight of ethylene,b) from 3 to 30% by weight of one or more vinyl esters of C.sub.2 -C.sub.6 -monocarboxylic acids,c) from 3 to 20% by weight of one or more aminoalkyl acrylates of the general formula I ##STR1## where R.sup.1 is hydrogen or methyl, R.sup.2 and R.sup.3 may be identical or different and are each hydrogen or C.sub.1 -C.sub.6 -alkyl and A.sup.1 is straight-chain or branched C.sub.2 -C.sub.10 -alkylene, andd) from 0 to 10% by weight of one or more monomers which are copolymerizable with the monomers a) to c),copolymers in which monomer b) is vinyl acetate and which have a number average molecular weight of from 5000 to 50,000 being excluded, or are composed ofa') from 50 to 95.5% by weight of ethylene,b') from 4 to 30% by weight of one or more vinyl esters of C.sub.2 -C.sub.6 -monocarboxylic acids,c') from 0.Type: GrantFiled: June 5, 1997Date of Patent: May 5, 1998Assignee: BASF AktiengesellschaftInventors: Hans-Joachim Muller, Bernd Wenderoth, Albin Berger, Dieter Littmann, Roger Klimesch, Knut Oppenlander, Bernd Lothar Marczinke, Thomas Ruhl, Marc Heider
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Patent number: 5684108Abstract: An ethylene-based copolymer which is suitable as a flow improver for mineral oil middle distillates and is composed ofa) from 50 to 94% by weight of ethylene;b) from 3 to 30% by weight of one or more vinyl esters of C.sub.2 -C.sub.6 -monocarboxylic acids;c) from 3 to 20% by weight of one or more aminoalkyl acrylates of the formula I ##STR1## which R.sup.1 is hydrogen or methyl, R.sup.2 and R.sup.3 are identical or different and are each hydrogen or C.sub.1 -C.sub.6 -alkyl and A.sup.1 is straight-chain or branched C.sub.2 -C.sub.10 -alkylene; andd) from 0 to 10% by weight of one or more monomers which are copolymerizable with the monomers a) to c), wherein copolymers containing vinyl acetate as monomer b) and having a number average molecular weight of from 5,000 to 50,000 are excluded from the scope of the copolymer.Type: GrantFiled: April 2, 1996Date of Patent: November 4, 1997Assignee: BASF AktiengesellschaftInventors: Hans-Joachim Muller, Bernd Wenderoth, Albin Berger, Dieter Littmann, Roger Klimesch, Knut Oppenlander, Bernd Lothar Marczinke, Thomas Ruhl, Marc Heider
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Patent number: 5536788Abstract: Carboxyl-containing isobutene copolymers are obtainablea) by cationic polymerization of a mixture of from 1 to 99 mol % of isobutene and from 99 to 1 mol % of a 2-methylalk-1-ene at less than 20.degree. C. in the presence of a halogen-containing Lewis acid andb) subsequent grafting of the isobutene copolymer obtainable in this manner with an .alpha.,.beta.-ethylenically unsaturated carboxylic acid or carboxylic acid derivative at above 100.degree. C. and in the presence of a free radical initiator.Such carboxyl-containing isobutene copolymers are particularly suitable as adhesive raw materials or as sealing compounds.Type: GrantFiled: June 13, 1995Date of Patent: July 16, 1996Assignee: BASF AktiengesellschaftInventors: Andreas Deckers, Hans-Joachim Muller, Roger Klimesch, Eckehardt Wistuba, Heinz Plaumann, Erich Kolk, Gunther Isbarn, Karl-Heinz Fauth, Joachim Krobb
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Patent number: 5473022Abstract: Carboxyl-containing isobutene copolymers are obtainablea) by cationic polymerization of a mixture of from 1 to 99 mol % of isobutene and from 99 to 1 mol % of a 2-methylalk-1-ene at less than 20.degree. C. in the presence of a halogen-containing Lewis acid andb) subsequent grafting of the isobutene copolymer obtainable in this manner with an .alpha.,.beta.-ethylenically unsaturated carboxylic acid or carboxylic acid derivative at above 100.degree. C. and in the presence of a free radical initiator.Such carboxyl-containing isobutene copolymers are particularly suitable as adhesive raw materials or as sealing compounds.Type: GrantFiled: September 2, 1994Date of Patent: December 5, 1995Assignee: BASF AktiengesellschaftInventors: Andreas Deckers, Hans-Joachim Muller, Roger Klimesch, Eckehardt Witsuba, Heinz Plaumann, Erich Kolk, Gunther Isbarn, Karl-Heinz Fauth, Joachim Krobb
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Patent number: 5466753Abstract: Grafted propylene copolymers having a melt flow index of from 0.1 to 100 g/10 min, at 230.degree. C. and under a weight of 2.16 kg, comprisinga.sub.1) a polymer comprising from 25 to 97% by weight of a propylene copolymer (I), which contains from 0.1 to 15% by weight of copolymerized C.sub.2 -C.sub.10 -alk-1-enes, and from 3 to 75% by weight of a further propylene copolymer (II) which contains from 15 to 80% by weight of copolymerized C.sub.2 -C.sub.10 -alk-1-enes, or comprisinga.sub.2) a polymer comprising from 25 to 97% by weight of a propylene homopolymer and from 3 to 75% by weight of a propylene copolymer containing copolymerized C.sub.2 -C.sub.10 -alk-1-enes, the comonomer content being from 15 to 80% by weight, based on the latter component, andb) a monomaleimide compound of the following formula (I) ##STR1## where R has the following meanings: C.sub.1 -C.sub.10 -alkyl, it being possible for the alkyl radical to be interrupted by one or more oxygen atoms, C.sub.5 -C.sub.10 -cycloalkyl, C.sub.6 -C.sub.Type: GrantFiled: September 20, 1994Date of Patent: November 14, 1995Assignee: BASF AktiengesellschaftInventors: Bernd L. Marczinke, Hans-Joachim Muller
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Patent number: 5348575Abstract: A corrosion protection composition that is advantageously unobjectionable from a health risk point of view and not easily flammable, for the economic production of anticorrosion coatings on metal workpieces, in particular, workpieces made of cast iron or steel, for the period of their storage and transport until the workpieces are installed, is composed of a solution of a mineral wax mixture in a liquid monocarboxylic acid ester. The composition includes from about 5 to about 10 parts by weight of a mineral wax mixture which has a molecular weight ranging between about 400 and about 600, and from about 70 to about 85 parts by weight of at least one liquid monocarboxylic acid ester which has a boiling point above 340.degree. C., and, optionally, additives such as antioxidants, antiozonants, antiaging agents, corrosion inhibitors, light stabilizers, and/or wetting agents.Type: GrantFiled: July 9, 1993Date of Patent: September 20, 1994Assignee: Goetz E. AGInventors: Hans-Joachim Muller, Hans-Wilhelm Plankert
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Patent number: 5291088Abstract: A moisture-proof coupling, which is simple in design and easy to assemble, is disposed between a motor housing and a bearing plate, with the electrical leads running out through the moisture-proof coupling. The electrical leads are integrally molded in an insulated lead-insert, which can be inserted into an opening on the end face of the bearing plate. A circumferential sealing ring is molded on the insulated lead-insert. The sealing ring is injection-molded together with the lead-insert on a brush plate so that it can be pre-positioned and, when the motor is assembled, can be pressed between the motor housing and the bearing plate to form a seal. The brush plate can be fixed together with the lead-insert and the sealing ring in the bearing plate in the manner of a pre-assembled component.Type: GrantFiled: January 29, 1992Date of Patent: March 1, 1994Assignee: Siemens AktiengesellschaftInventors: Peter Adam, Werner Seuffert, Manfred Hofmann, Hans-Joachim Muller