Patents by Inventor Thomas Greindl
Thomas Greindl 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: 10619125Abstract: Process for preparation of a mixture of methyl glycine diacetic acid (MGDA) or its respective mono-, di-, trialkali metal salt or its respective mono-, di- or tri-ammonium salt or mixtures thereof, and glutamic acid diacetic acid (GLDA) or its respective mono-, di-, tri-, or tetra-alkali metal or mono-, di-, tri- or tetra-ammonium salt or mixtures thereof, wherein said process com-prises the steps of: (a) dissolution in water of (a1) alanine in its L- or D-enantiomeric form or its respective monoalkali metal salt or mixtures thereof, and (a2) glutamic acid as L- or D-enantiomer or its respective mono-, or dialkali metal or mixtures thereof, wherein the molar ratio of alanine to glutamic acid is in the range of from 1:9 to 9:1, (b) converting the mixture obtained in step (a) with formaldehyde and hydrocyanic acid or alkali metal cyanide to the corresponding dinitriles, (c) saponification of the dinitriles resulting from step (b).Type: GrantFiled: March 2, 2016Date of Patent: April 14, 2020Assignee: BASF SEInventors: Constanze Franzke, Marta Reinoso Garcia, Robert Baumann, Thomas Greindl
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Publication number: 20180237728Abstract: Process for preparation of a mixture of methyl glycine diacetic acid (MGDA) or its respective mono-, di-, trialkali metal salt or its respective mono-, di- or tri-ammonium salt or mixtures thereof, and glutamic acid diacetic acid (GLDA) or its respective mono-, di-, tri-, or tetra-alkali metal or mono-, di-, tri- or tetra-ammonium salt or mixtures thereof, wherein said process com-prises the steps of: (a) dissolution in water of (a1) alanine in its L- or D-enantiomeric form or its respective monoalkali metal salt or mixtures thereof, and (a2) glutamic acid as L- or D-enantiomer or its respective mono-, or dialkali metal or mixtures thereof, wherein the molar ratio of alanine to glutamic acid is in the range of from 1:9 to 9:1, (b) converting the mixture obtained in step (a) with formaldehyde and hydrocyanic acid or alkali metal cyanide to the corresponding dinitriles, (c) saponification of the dinitriles resulting from step (b).Type: ApplicationFiled: March 2, 2016Publication date: August 23, 2018Applicant: BASF SEInventors: Constanze FRANZKE, Marta REINOSO GARCIA, Robert BAUMANN, Thomas GREINDL
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Patent number: 9850453Abstract: Aqueous solution comprising (A) in the range of from 30 to 60% by weight of a complexing agent, selected from the alkali metal salts of methylglycine diacetic acid and the alkali metal salts of glutamic acid diacetic acid, (B) in the range of from 1 to 25% by weight of at least one salt of a sulfonic acid or of an organic acid, percentages referring to the total respective aqueous solution.Type: GrantFiled: May 13, 2014Date of Patent: December 26, 2017Assignee: BASF SEInventors: Markus Christian Biel, Thomas Greindl, Markus Hartmann, Wolfgang Staffel, Marta Reinoso Garcia
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Publication number: 20160130531Abstract: Aqueous solution comprising (A) in the range of from 30 to 60% by weight of a complexing agent, selected from the alkali metal salts of methylglycine diacetic acid and the alkali metal salts of glutamic acid diacetic acid, (B) in the range of from 1 to 25% by weight of at least one salt of a sulfonic acid or of an organic acid, percentages referring to the total respective aqueous solution.Type: ApplicationFiled: May 13, 2014Publication date: May 12, 2016Applicant: BASF SEInventors: Markus Christian BIEL, Thomas GREINDL, Markus HARTMANN, Wolfgang STAFFEL, Marta REINOSO GARCIA
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Publication number: 20160097020Abstract: Aqueous solution comprising (A) in the range of from 30 to 60% by weight of a complexing agent, selected from the alkali metal salts of methylglycine diacetic acid and the alkali metal salts of glutamic acid diacetic acid, (B) in the range of from 700 ppm to 7% by weight of a polymer being selected from polyamines, the N atoms being partially or fully substituted with CH2COOH groups, partially or fully neutralized with alkali metal cations, ppm and percentages referring to the total respective aqueous solutionType: ApplicationFiled: May 13, 2014Publication date: April 7, 2016Applicant: BASF SEInventors: Markus Christian BIEL, Thomas GREINDL, Markus HARTMANN, Wolfgang STAFFEL, Marta REINOSO GARCIA
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Patent number: 6861548Abstract: The invention relates to a continuous process, carried out in two steps, for the cyanoalkylation of compounds having one or more NH functions by reaction thereof with carbonyl compounds and hydrocyanic acid, in which the first step is carried out without pressure at a temperature which is below the boiling point of the reaction mixture.Type: GrantFiled: September 9, 2002Date of Patent: March 1, 2005Assignee: BASF AktiengesellschaftInventors: Thomas Greindl, Gerold Braun, Friedrich Wirsing, Georg Krug
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Patent number: 6759553Abstract: A process for the preparation of creatine or creatine monohydrate by reaction of sodium or potassium sarcosinate with cyanamide at a temperature from 20 to 150° C. and a pH from 7.0 to 14.0 comprises carrying out the pH adjustment with carbonic acid.Type: GrantFiled: September 8, 1999Date of Patent: July 6, 2004Assignee: BASF AktiengesellschaftInventors: Knut Kessel, Günter Scherr, Michael Kluge, Norbert Biedermann, Thomas Greindl, Thomas Bogenstätter, Wolfgang Hähnlein
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Patent number: 6582485Abstract: Compounds of the general formula I Z—CH2—NY2−nHn (I) where n is 0 or 1, Z is a straight-chain or branched polyalkyl radical having a number average molecular weight of from about 150 to 40,000, and Y is a radical of the formula IIa or IIb where the radicals R, R1 and R2 independently of one another, are each hydrogen, an unsubstituted or substituted alkyl, alkenyl or alkynyl radical or an unsubstituted or substituted cycloalkyl, aryl or arylalkyl radical, which may carry one or more heteroatoms, and A is an alkyleneimine radical; or, if n is 0, one of the radicals Y may be a polyoxyalkylene radical, and processes for their preparation and fuel and lubricant compositions, and mixtures of additives, which contain the novel compounds.Type: GrantFiled: September 22, 2000Date of Patent: June 24, 2003Assignee: BASF AktiengesellschaftInventors: Manfred Julius, Roland Ettl, Wolfgang Günther, Thomas Greindl
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Publication number: 20030114700Abstract: The invention relates to a continuous process, carried out in two steps, for the cyanoalkylation of compounds having one or more NH functions by reaction thereof with carbonyl compounds and hydrocyanic acid, in which the first step is carried out without pressure at a temperature which is below the boiling point of the reaction mixture.Type: ApplicationFiled: September 9, 2002Publication date: June 19, 2003Applicant: BASF AkiengesellschaftInventors: Thomas Greindl, Gerold Braun, Friedrich Wirsing, Georg Krug
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Patent number: 6420593Abstract: A process for preparing compounds of the formula IIb where R is C6-C30-alkyl or C6-C30-alkenyl, which may additionally have upto 5 hydroxyl groups, formyl groups, C1-C4-alkoxy groups, phenoxy groups or C1-C4-alkoxycarbonyl groups as substituents and may be interrupted by upto 5 nonadjacent oxygen atoms, or alkoxylate groups of the formula —(CH2)k—O—(A1O)m—(A2O)n—Y where A1 and A2 are, independently of one another, 1,2-alkylene groups having 2 to 4 carbon atoms, Y is hydrogen, C1-C12-alkyl, phenyl or C1-C4-alkoxycarbonyl, and k is 1, 2 or 3, and m and n are each numbers from 0 to 50, and the total of m+n must be at least 4, by reacting iminodiacetonitrile with aldehydes of the formula R—CHO and HCN or alkali metal cyanides, the process being carried out a) in the absence of an organic solvent and in the presence of a Lewis or Brönsted acid, or b) in the presence or absence of an organic solvent and in the presence of an emulsifier, or c)Type: GrantFiled: June 8, 2001Date of Patent: July 16, 2002Assignee: BASF AktiengesellschaftInventors: Rainer Rahm, Thomas Greindl, Alfred Oftring, Guenter Oetter, Juergen Detering, Gerold Braun
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Publication number: 20020087024Abstract: The invention relates to a continuous process, carried out in two steps, for the cyanoalkylation of compounds having one or more NH functions by reaction thereof with carbonyl compounds and hydrocyanic acid, in which the first step is carried out without pressure at a temperature which is below the boiling point of the reaction mixture.Type: ApplicationFiled: October 5, 2001Publication date: July 4, 2002Applicant: BASF AktiengesellschaftInventors: Thomas Greindl, Gerold Braun, Friedrich Wirsing, Georg Krug
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Publication number: 20010034457Abstract: A process for preparing compounds of the formula IIb 1Type: ApplicationFiled: June 8, 2001Publication date: October 25, 2001Applicant: BASF AKTIENGESELLSCHAFTInventors: Rainer Rahm, Thomas Greindl, Alfred Oftring, Guenter Oetter, Juergen Detering, Gerold Braun
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Patent number: 6307086Abstract: A process for preparing compounds of the formula IIb where R is C6-C30-alkyl or C6-C30-alkenyl, which may additionally have upto 5 hydroxyl groups, formyl groups, C1-C4-alkoxy groups, phenoxy groups or C1-C4-alkoxycarbonyl groups as substituents and may be interrupted by upto 5 nonadjacent oxygen atoms, or alkoxylate groups of the formula —(CH2)k—O—(A1O)m—(A2O)n—Y where A1 and A2 are, independently of one another, 1,2-alkylene groups having 2 to 4 carbon atoms, Y is hydrogen, C1-C12-alkyl, phenyl or C1-C4-alkoxycarbonyl, and k is 1, 2 or 3, and m and n are each numbers from 0 to 50, and the total of m+n must be at least 4, by reacting iminodiacetonitrile with aldehydes of the formula R—CHO and HCN or alkali metal cyanides, the process being carried out a) in the absence of an organic solvent and in the presence of a Lewis or Brönsted acid, or b) in the presence or absence of an organic solvent and in the presence of an emulsifier, or c)Type: GrantFiled: March 21, 2000Date of Patent: October 23, 2001Assignee: BASF AktiengesellschaftInventors: Rainer Rahm, Thomas Greindl, Alfred Oftring, Guenter Oetter, Juergen Detering, Gerold Braun
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Patent number: 6252103Abstract: A process for the preparation of an O-alkylisourea of the formula I, where R1 is C1- to C20-alkyl, in the form of an acid addition salt, in which urea and an alkyl-transferring reagent, if required dissolved or suspended in a diluent, are reacted at 40-200° C. in a continuously operated reactor, is described. The diluent is preferably a recycled part-stream of the O-alkylisourea acid addition salt obtained.Type: GrantFiled: November 15, 1999Date of Patent: June 26, 2001Assignee: BASF AktiengesellschaftInventors: Michael Kluge, Knut Kessel, Thomas Greindl, Norbert Biedermann, Günter Scherr, Thomas Bogenstätter
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Patent number: 6165237Abstract: Compounds of the general formula IZ--CH.sub.2 --NY.sub.2-n H.sub.n (I)wheren is 0 or 1,z is a straight-chain or branched polyalkyl radical having a number average molecular weight of from about 150 to 40,000, andY is a radical of the formula IIa or IIb ##STR1## where the radicals R, R.sup.1 and R.sup.2 independently of one another, are each hydrogen, an unsubstituted or substituted alkyl, alkenyl or alkynyl radical or an unsubstituted or substituted cycloalkyl, aryl or arylalkyl radical, which may carry one or more heteroatoms, andA is an alkyleneimine radical; or, ifn is 0, one of the radicals Y may be a polyoxyalkylene radical, and processes for their preparation and fuel and lubricant compositions, and mixtures of additives, which contain the novel compounds.Type: GrantFiled: August 17, 1998Date of Patent: December 26, 2000Assignee: BASF AktiengesellschaftInventors: Manfred Julius, Roland Ettl, Wolfgang Gunther, Thomas Greindl
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Patent number: 6147258Abstract: Substituted guanidine derivatives of the formula I ##STR1## are prepared by reacting calcium cyanamide with a primary or secondary amino carboxylic acid or a primary or secondary amino sulfonic acid or their derivatives of the formula II ##STR2## where the substituents R.sup.1 and R.sup.2 have the meanings explained in the description.Type: GrantFiled: October 22, 1998Date of Patent: November 14, 2000Assignee: BASF AktiengesellschaftInventors: Thomas Greindl, Gunter Scherr, Rolf Schneider, Klaus Mundinger
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Patent number: 6143929Abstract: A process for preparing guanidine derivatives, in particular creatine, is described and entails an O-alkylisourea salt and a primary or secondary amine being reacted in the presence of crystals of a guanidine derivative.Type: GrantFiled: December 13, 1999Date of Patent: November 7, 2000Assignee: BASF AktiengesellschaftInventors: Knut Kessel, Michael Kluge, Thomas Greindl, Thomas Bogenstatter, Gunter Scherr, Matthias Rauls, Richard van Gelder
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Patent number: 6093848Abstract: Substituted guanidine derivatives of the formula I ##STR1## are prepared by a) converting urea into an alkylated isourea of the formula II ##STR2## and b) reacting the alkylated isourea with a primary or secondary amine of the formula III ##STR3## where the substituents R.sup.1, R.sup.2 and R.sup.10 have the meanings explained in the description.Type: GrantFiled: October 27, 1998Date of Patent: July 25, 2000Assignee: BASF AktiengesellschaftInventors: Thomas Greindl, Gunter Scherr, Rolf Schneider, Klaus Mundinger
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Patent number: 6063286Abstract: Process for preparing fine-particle, water-insoluble polymers of aziridines by polymerizing aziridines, preferably ethylenimine, in the presence of crosslinkers which contain at least two functional groups, and in at least one ether, and also modified, water-insoluble polymers of aziridines which can be obtained by reacting fine-particle, water-insoluble, crosslinked polymers of aziridines, in aqueous medium, with carbon disulfide or formaldehyde and a nucleophilic agent from the group consisting of alkali metal cyanides, primary amines, secondary amines, alkali metal sulfites and alkali metal phosphites, and use of the modified and non-modified fine-particle, water-insoluble polymers for immobilizing active compounds, as absorbents for aldehydes, ketones and acids, and also for removing heavy metal ions from wastewaters.Type: GrantFiled: October 22, 1998Date of Patent: May 16, 2000Assignee: BASF AktiengesellschaftInventors: Ulrich Steuerle, Wolfgang Reuther, Hubert Meixner, Michael Ehle, Thomas Greindl, Rainer Betz
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Patent number: 6008176Abstract: Glycine-N,N-diacetic acid derivatives and their alkali metal, alkaline earth metal, ammonium and substituted ammonium salts are used as complexing agents for alkaline earth metal and heavy metal ions with the exception of .alpha.-alanine-N,N-diacetic acid as textile detergent builders in powder detergent formulations and as calcium sequestrants in oral hygiene products.Type: GrantFiled: May 6, 1998Date of Patent: December 28, 1999Assignee: BASF AktiengesellschaftInventors: Juergen Schneider, Birgit Potthoff-Karl, Alexander Kud, Richard Baur, Alfred Oftring, Thomas Greindl