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).

  • Patent number: 9902921
    Abstract: 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: Grant
    Filed: May 9, 2014
    Date of Patent: February 27, 2018
    Assignee: WEYLCHEM WIESBADEN GMBH
    Inventors: Gerd Reinhardt, Michael Best, Miriam Ladwig, Andreas Schottstedt, Mathias Groeschen, Sven Gebhard
  • Patent number: 9902922
    Abstract: 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: Grant
    Filed: May 9, 2014
    Date of Patent: February 27, 2018
    Assignee: WEYLCHEM WIESBADEN GMBH
    Inventors: Gerd Reinhardt, Michael Best, Miriam Ladwig, Andreas Schottstedt, Mathias Groeschen, Sven Gebhard
  • Publication number: 20160152929
    Abstract: 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: Application
    Filed: May 9, 2014
    Publication date: June 2, 2016
    Inventors: Gerd REINHARDT, Michael BEST, Miriam LADWIG, Andreas SCHOTTSTEDT, Mathias GROESCHEN, Sven GEBHARD
  • Publication number: 20160145541
    Abstract: 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: Application
    Filed: May 9, 2014
    Publication date: May 26, 2016
    Inventors: Gerd REINHARDT, Michael BEST, Miriam LADWIG, Andreas SCHOTTSTEDT, Mathias GROESCHEN, Sven GEBHARD
  • Patent number: 9102903
    Abstract: 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: Grant
    Filed: February 3, 2012
    Date of Patent: August 11, 2015
    Assignee: WEYLCHEM SWITZERLAND AG
    Inventors: Gerd Reinhardt, Werner Janitschek, Miriam Ladwig
  • Patent number: 8980127
    Abstract: 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: Grant
    Filed: January 28, 2011
    Date of Patent: March 17, 2015
    Assignee: Clariant International Ltd.
    Inventors: Gerd Reinhardt, Miriam Ladwig
  • Patent number: 8846921
    Abstract: 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: Grant
    Filed: October 6, 2011
    Date of Patent: September 30, 2014
    Assignee: Clariant Finance (Bvt) Ltd
    Inventors: Christian Sidot, Audrey Caron, Miriam Ladwig, Gerd Reinhardt
  • Publication number: 20140114073
    Abstract: 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: Application
    Filed: October 6, 2011
    Publication date: April 24, 2014
    Applicants: CLARIANT SPECIALTY FINE CHEMICALS (FRANCE), CLARIANT FINANCE (BVI) LIMITED
    Inventors: Christian Sidot, Audrey Caron, Miriam Ladwig, Gerd Reinhardt
  • Publication number: 20140005091
    Abstract: 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: Application
    Filed: February 3, 2012
    Publication date: January 2, 2014
    Applicant: CLARIANT INTERNATIONAL LTD.
    Inventors: Gerd Reinhardt, Werner Janitschek, Miriam Ladwig
  • Publication number: 20130072685
    Abstract: 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: Application
    Filed: January 28, 2011
    Publication date: March 21, 2013
    Applicant: CLARIANT FINANCE (BVI) LIMITED
    Inventors: Gerd Reinhardt, Miriam Ladwig, Michael Best, Thorsten Schneider, Ernst Spicker
  • Publication number: 20130032754
    Abstract: 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: Application
    Filed: January 28, 2011
    Publication date: February 7, 2013
    Applicant: CLARIANT FINANCE (BVI) LIMITED
    Inventors: Gerd Reinhardt, Miriam Ladwig
  • Patent number: 6639096
    Abstract: 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: Grant
    Filed: August 1, 2002
    Date of Patent: October 28, 2003
    Assignee: Clariant GmbH
    Inventors: Gerd Reinhardt, Peter Naumann, Miriam Ladwig, Ina Golla, Torsten Pilz, Reto Wieduwilt, Henri Jourdan
  • Publication number: 20030064906
    Abstract: 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: Application
    Filed: August 1, 2002
    Publication date: April 3, 2003
    Applicant: Clariant GmbH
    Inventors: Gerd Reinhardt, Peter Naumann, Miriam Ladwig, Ina Golla, Torsten Pilz, Retio Wieduwilt, Henri Jourdan