Patents by Inventor Miriam Ladwig
Miriam Ladwig 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: 9902921Abstract: The invention relates to a bleach catalyst granules containing a metal-containing bleach catalyst, which comprises at least one ligand selected from the group comprising di- or trimethyltriazcyclononanes or derivatives therefrom, and a homo- or copolymer polycarboxylate, salts thereof or partially neutralized having a pH-value of between 3 and 9. Said granules are produced in an anhydrous granulation process, in particular by compacting, the treatment temperature being maintained at below 100° C.Type: GrantFiled: May 9, 2014Date of Patent: February 27, 2018Assignee: WEYLCHEM WIESBADEN GMBHInventors: Gerd Reinhardt, Michael Best, Miriam Ladwig, Andreas Schottstedt, Mathias Groeschen, Sven Gebhard
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Patent number: 9902922Abstract: The invention relates to a bleaching-agent co-granule containing a bleach activator, a metal-containing bleach catalyst comprising at least one ligand from the group consisting of di- or trimethyltriazacyclononane and derivatives of these, and a homo- or copolymeric polycarboxylate or its salts or partial neutralizates having a pH in the range from 3 to 9. The bleaching-agent co-granule is obtained in an anhydrous granulating process, preferably by compaction at a temperature below 100° C. The invention also relates to the method of using the bleaching-agent co-granule in dishwasher detergents and to a detergent comprising said bleaching-agent co-granule.Type: GrantFiled: May 9, 2014Date of Patent: February 27, 2018Assignee: WEYLCHEM WIESBADEN GMBHInventors: Gerd Reinhardt, Michael Best, Miriam Ladwig, Andreas Schottstedt, Mathias Groeschen, Sven Gebhard
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Publication number: 20160152929Abstract: The invention relates to a bleaching-agent co-granule containing a bleach activator, a metal-containing bleach catalyst comprising at least one ligand from the group consisting of di- or trimethyltriazacyclononane and derivatives of these, and a homo- or copolymeric polycarboxylate or its salts or partial neutralizates having a pH in the range from 3 to 9. The bleaching-agent co-granule is obtained in an anhydrous granulating process, preferably by compaction at a temperature below 100° C. The invention also relates to the method of using the bleaching-agent co-granule in dishwasher detergents and to a detergent comprising said bleaching-agent co-granule.Type: ApplicationFiled: May 9, 2014Publication date: June 2, 2016Inventors: Gerd REINHARDT, Michael BEST, Miriam LADWIG, Andreas SCHOTTSTEDT, Mathias GROESCHEN, Sven GEBHARD
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Publication number: 20160145541Abstract: The invention relates to a bleach catalyst granules containing a metal-containing bleach catalyst, which comprises at least one ligand selected from the group comprising di- or trimethyltriazcyclononanes or derivatives therefrom, and a homo- or copolymer polycarboxylate, salts thereof or partially neutralized having a pH-value of between 3 and 9. Said granules are produced in an anhydrous granulation process, in particular by compacting, the treatment temperature being maintained at below 100° C.Type: ApplicationFiled: May 9, 2014Publication date: May 26, 2016Inventors: Gerd REINHARDT, Michael BEST, Miriam LADWIG, Andreas SCHOTTSTEDT, Mathias GROESCHEN, Sven GEBHARD
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Patent number: 9102903Abstract: The invention relates to the use of manganese or iron complexes which, as well as a tetraoxolene unit, contain two macrocyclic, N-containing ligands, especially cyclen or cyclam ligands, in washing and cleaning compositions in the form of granules or powder or solution or suspension for bleaching of colored stains both on textiles and on hard surfaces. The invention also relates to washing and cleaning compositions which comprise such complexes as bleach activators and to the use thereof for textile washing or for dishwashing detergents and other uses in personal care and other areas.Type: GrantFiled: February 3, 2012Date of Patent: August 11, 2015Assignee: WEYLCHEM SWITZERLAND AGInventors: Gerd Reinhardt, Werner Janitschek, Miriam Ladwig
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Patent number: 8980127Abstract: The invention relates to a method for producing homogeneous solutions of metal complexes of general formula (2): [MaLxXn]Ym, where M is a metal from the group comprising Mn(II), Mn(III), Mn(IV), Fe(III), Fe(III) or Fe(IV), X is a coordinated compound selected from mono- bi- or tri-charged anions or neutral molecules which are able to coordinate with a metal mono- bi- or tri-dentate, Y is a non-coordinated counter-ion which ensures charge equalization of the complex, L is a ligand of general formula (1) or the protonized or de-protonized form thereof, and a, x, n, m, R, R1, R2, R3 and z are as specified in claim 1, in diols or polyols, the monoethers or mixtures of said substances. Said method is characterized in that a ligand of the formula (1) is reacted with an iron or manganese salt in a heterogeneous reaction in the diol or polyol, the monoethers or mixtures of these substances.Type: GrantFiled: January 28, 2011Date of Patent: March 17, 2015Assignee: Clariant International Ltd.Inventors: Gerd Reinhardt, Miriam Ladwig
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Patent number: 8846921Abstract: The invention relates to a method for producing metal complexes of formula (2) [MaLxXn]Ym (2), where M is a metal from the group consisting of Mn(II), Mn(III), Mn(IV), Fe(II), Fe(III) or Fe(IV), X is a coordinating compound selected from mono-, bi- or tri-charged anions or neutral molecules which can coordinate to a metal in mono-, bi- or tri-dentate form, Y represents a non-coordinating counter-ion which ensures charge equalization of the complex, L represents a ligand of formula (1) or the protonized or de-protonized form thereof, and a, x, n, m, R, R1, R2, R3 and z have the meanings described in claim 1. Said method is characterized in that the reaction of one or more ligands of formula (1) with an iron salt or manganese salt is carried out in an acetone/water mixture in a temperature range from 0 to 50° C.Type: GrantFiled: October 6, 2011Date of Patent: September 30, 2014Assignee: Clariant Finance (Bvt) LtdInventors: Christian Sidot, Audrey Caron, Miriam Ladwig, Gerd Reinhardt
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Publication number: 20140114073Abstract: The invention relates to a method for producing metal complexes of formula (2) [MaLxXn]Ym (2), where M is a metal from the group consisting of Mn(II), Mn(III), Mn(IV), Fe(II), Fe(III) or Fe(IV), X is a coordinating compound selected from mono-, bi- or tri-charged anions or neutral molecules which can coordinate to a metal in mono-, bi- or tri-dentate form, Y represents a non-coordinating counter-ion which ensures charge equalization of the complex, L represents a ligand of formula (1) or the protonized or de-protonized form thereof, and a, x, n, m, R, R1, R2, R3 and z have the meanings described in claim 1. Said method is characterized in that the reaction of one or more ligands of formula (1) with an iron salt or manganese salt is carried out in an acetone/water mixture in a temperature range from 0 to 50° C.Type: ApplicationFiled: October 6, 2011Publication date: April 24, 2014Applicants: CLARIANT SPECIALTY FINE CHEMICALS (FRANCE), CLARIANT FINANCE (BVI) LIMITEDInventors: Christian Sidot, Audrey Caron, Miriam Ladwig, Gerd Reinhardt
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Publication number: 20140005091Abstract: The invention relates to the use of manganese or iron complexes which, as well as a tetraoxolene unit, contain two macrocyclic, N-containing ligands, especially cyclen or cyclam ligands, in washing and cleaning compositions in the form of granules or powder or solution or suspension for bleaching of coloured stains both on textiles and on hard surfaces. The invention also relates to washing and cleaning compositions which comprise such complexes as bleach activators and to the use thereof for textile washing or for dishwashing detergents and other uses in personal care and other areas.Type: ApplicationFiled: February 3, 2012Publication date: January 2, 2014Applicant: CLARIANT INTERNATIONAL LTD.Inventors: Gerd Reinhardt, Werner Janitschek, Miriam Ladwig
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Publication number: 20130072685Abstract: The invention describes a process for producing metal complexes of the general formula (2): [MaLxXn]Ym (2), where M is a metal from the group comprising Mn(II), Mn(III), Mn(IV), Fe(II), Fe(III) or Fe(IV), X is a coordinated compound selected from mono- bi- or tri-charged anions or neutral molecules which are able to coordinate with a metal mono- bi- or tri-dentate, Y represents a non-coordinated counter-ion which ensures charge equalization of the complex, L represents a ligand of the general formula (1) or the protonized or de-protonized form thereof, and a, x, n, m, R, R1, R2, R3 and z have the meaning specified in claim 1. Said process is characterized in that the reaction of a ligand of the formula (1) with an iron or manganese salt in a heterogeneous reaction is carried out in water, where the reaction is carried out in a temperature range of 35 to 50° C. and the pH value of the reaction mixture is from 1 to 3 after the addition of the iron or manganese salt.Type: ApplicationFiled: January 28, 2011Publication date: March 21, 2013Applicant: CLARIANT FINANCE (BVI) LIMITEDInventors: Gerd Reinhardt, Miriam Ladwig, Michael Best, Thorsten Schneider, Ernst Spicker
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Publication number: 20130032754Abstract: The invention relates to a method for producing homogeneous solutions of metal complexes of general formula (2): [MaLxXn]Ym, where M is a metal from the group comprising Mn(II), Mn(III), Mn(IV), Fe(III), Fe(III) or Fe(IV), X is a coordinated compound selected from mono- bi- or tri-charged anions or neutral molecules which are able to coordinate with a metal mono- bi- or tri-dentate, Y is a non-coordinated counter-ion which ensures charge equalization of the complex, L is a ligand of general formula (1) or the protonized or de-protonized form thereof, and a, x, n, m, R, R1, R2, R3 and z are as specified in claim 1, in diols or polyols, the monoethers or mixtures of said substances. Said method is characterized in that a ligand of the formula (1) is reacted with an iron or manganese salt in a heterogeneous reaction in the diol or polyol, the monoethers or mixtures of these substances.Type: ApplicationFiled: January 28, 2011Publication date: February 7, 2013Applicant: CLARIANT FINANCE (BVI) LIMITEDInventors: Gerd Reinhardt, Miriam Ladwig
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Patent number: 6639096Abstract: Process for the preparation of acyloxybenzenesulfonates by reaction of phenolsulfonate with a water content of less than 0.5% by weight and alkanecarbonyl halide in a hydrocarbon as solvent and in the presence of a catalyst in the form of a basic nitrogen-containing compound.Type: GrantFiled: August 1, 2002Date of Patent: October 28, 2003Assignee: Clariant GmbHInventors: Gerd Reinhardt, Peter Naumann, Miriam Ladwig, Ina Golla, Torsten Pilz, Reto Wieduwilt, Henri Jourdan
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Publication number: 20030064906Abstract: Process for the preparation of acyloxybenzenesulfonates by reaction of phenolsulfonate with a water content of less than 0.5% by weight and alkanecarbonyl halide in a hydrocarbon as solvent and in the presence of a catalyst in the form of a basic nitrogen-containing compound.Type: ApplicationFiled: August 1, 2002Publication date: April 3, 2003Applicant: Clariant GmbHInventors: Gerd Reinhardt, Peter Naumann, Miriam Ladwig, Ina Golla, Torsten Pilz, Retio Wieduwilt, Henri Jourdan