Patents by Inventor Horst Grafmans

Horst Grafmans 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).

  • Method for the production of aminoalkane acid amides
    Patent number: 8759580
    Abstract: The invention relates to a process for preparing aminoalkanamides by reacting cyanoalkanoic esters with a) ammonia or an amine and b) hydrogen in the presence of a catalyst, the reaction with component b) being started simultaneously or not later than a maximum of 100 minutes after commencement of the reaction of the cyanoalkanoic ester with component a).
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: June 24, 2014
    Assignee: BASF SE
    Inventors: Martin Ernst, Andreas Kusche, Gunnar Heydrich, Horst Grafmans, Holger Evers, Johann-Peter Melder, Harald Meiβner, Torsten Freund
  • Method for the production of N,N-dimethylacetamide (DMAC)
    Patent number: 8338644
    Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution which is obtained as a by-product in the preparation of polyTHF by transesterifying polyTHF diacetate with methanol.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: December 25, 2012
    Assignee: BASF SE
    Inventors: Horst Grafmans, Steffen Maas, Alexander Weck, Heinz Ruetter, Michael Schulz, Karl-Heinz Ross
  • Method for the production of N,N-dimethylacetamide (DMAC)
    Patent number: 8193390
    Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution and the continuous distillative workup is effected in such a way that methanol and any other low boilers are initially removed overhead in a column A and the bottom effluent of column A is fed to a column B in which DMAC is removed via a side draw a purity of ?99.7% by weight.
    Type: Grant
    Filed: December 3, 2005
    Date of Patent: June 5, 2012
    Assignee: BASF SE
    Inventors: Horst Grafmans, Steffen Maas, Alexander Weck, Heinz Rütter, Michael Schulz, Karl-Heinz Roβ
  • METHOD FOR THE PRODUCTION OF N,N-DIMETHYLACETAMIDE (DMAC)
    Publication number: 20110082316
    Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution which is obtained as a byproduct in the preparation of polyTHF by transesterifying polyTHF diacetate with methanol.
    Type: Application
    Filed: December 14, 2010
    Publication date: April 7, 2011
    Applicant: BASFAktiengesellschaft
    Inventors: Horst Grafmans, Steffen Maas, Alexander Weck, Heinz Rütter, Michael Schulz, Karl-Heinz Roß
  • METHOD FOR THE PRODUCTION OF N,N-DIMETHYLACETAMIDE (DMAC)
    Publication number: 20100130781
    Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution and the continuous distillative workup is effected in such a way that methanol and any other low boilers are initially removed overhead in a column A and the bottom effluent of column A is fed to a column B in which DMAC is removed via a side draw a purity of ?99.7% by weight.
    Type: Application
    Filed: December 3, 2005
    Publication date: May 27, 2010
    Applicant: BASF Aktiengesellschaft
    Inventors: Horst Grafmans, Steffen Maas, Alexander Weck, Heinz Rütter, Michael Schulz, Karl-Heinz Roß
  • Method for the Production of Aminoalkane Acid Amides
    Publication number: 20080306299
    Abstract: The invention relates to a process for preparing aminoalkanamides by reacting cyanoalkanoic esters with a) ammonia or an amine and b) hydrogen in the presence of a catalyst, the reaction with component b) being started simultaneously or not later than a maximum of 100 minutes after commencement of the reaction of the cyanoalkanoic ester with component a).
    Type: Application
    Filed: December 15, 2006
    Publication date: December 11, 2008
    Applicant: BASF SE
    Inventors: Martin Ernst, Andreas Kusche, Gunnar Heydrich, Horst Grafmans, Holger Evers, Johann-Peter Melder, Harald Meissner, Torsten Freund
  • Method For The Production Of N,N-Dimethylacetamide (Dmac)
    Publication number: 20080207949
    Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution which is obtained as a by-product in the preparation of polyTHF by transesterifying polyTHF diacetate with methanol.
    Type: Application
    Filed: December 3, 2005
    Publication date: August 28, 2008
    Applicant: Basf Aktiengesellschaft
    Inventors: Horst Grafmans, Steffen Maas, Alexander Weck, Heinz Rutter, Michael Schulz, Karl-Heinz Ross
  • Method for producing N, N-Dimethylacetamide (Dmac)
    Publication number: 20080103336
    Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution and in the range from 0.0002 to 0.09 mol of catalyst per mole of MeOAc, and performing the reaction at a temperature in the range from 90 to 140° C. and at an absolute pressure in the range from 10 to 30 bar.
    Type: Application
    Filed: December 3, 2005
    Publication date: May 1, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Horst Grafmans, Steffen Maas, Alexander Weck, Heinz Rutter, Michael Schulz, Karl-Heinz Ross