Patents by Inventor Joerg Pastre

Joerg Pastre 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: 7351860
    Abstract: The invention relates to a method for producing formic acid formates, whereby (a) formic acid methyl ester is partially hydrolysed with water; (b) formic acid methyl ester and methanol are separated by distillation from the reaction mixture obtained in step (a), forming a current containing formic acid and water; (c) the current obtained in step (b), containing the formic acid methyl ester and optionally methanol, is converted into a current containing formate and water, by (i) reaction with a basic compound having a pKa value of the corresponding acid of the corresponding dissociation step of =3, measured at 25° C. in an aqueous solution, in presence of water, and (ii) separation by distillation of the methanol; and (d) the current obtained in step (b), containing formic acid and water, and the current obtained in step (c), containing formate and water, are combined to form a mixture containing the formic acid formate and water.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: April 1, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Christoph Adami, Jörn Karl, Alexander Hauk, Ralf Böhling, Jörg Pastre, Robert Lenz
  • Patent number: 7323593
    Abstract: A process for preparing acid formates which comprises (a) partially hydrolyzing methyl formates with water; (b) separating off by distillation methyl formate and methanol from the reaction mixture obtained in process stage (a), forming a stream comprising formic acid and water; and (c) combining the stream comprising formic acid and water from the process stage (b) and the corresponding formate, forming a mixture comprising the acid formate and water, an apparatus for their preparation and their use.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: January 29, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Christoph Adami, Jörn Karl, Alexander Hauk, Ralf Böhling, Jörg Pastre, Robert Lenz
  • Patent number: 7253316
    Abstract: Disclosed is a method for jointly producing (i) formic acid (III); (ii) a carboxylic acid comprising at least two carbon atoms (II) and/or the derivatives thereof; and (iii) a carboxylic acid anhydride (VII). According to said method, (a) a formic acid ester (I) is transesterfied to formic acid (III) and the corresponding carboxylic acid ester (IV) by means of a carboxylic acid comprising at least two carbon atoms (II); (b) at least one portion of the carboxylic acid ester (IV) formed in step (a) is carbonylated in order to obtain the carboxylic acid anhydride (V); and (c) at least one portion of the carboxylic acid anhydride (V) formed in step (b) is further dehydrated by means of a carboxylic acid (VI) so as to form a carboxylic acid anhydride (VII) and the carboxylic acid (II).
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: August 7, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Jörg Pastre, Kai Michael Exner, Wolfram Stüer, Elke Geissler, Otto Machhammer
  • Patent number: 6992212
    Abstract: Formic acid and a carboxylic acid having at least two carbon atoms and/or derivatives thereof are prepared jointly by a process in which (a) a formic ester (I) is transesterified with a carboxylic acid having at least two carbon atoms (II) to form formic acid (III) and the corresponding carboxylic ester (IV); and (b) at least part of the carboxylic ester (IV) formed in step (a) is carbonylated to give the corresponding carboxylic anhydride (V).
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: January 31, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Zehner, Jörg Pastre, Wolfram Stüer