Patents by Inventor Wolfgang Scheinert

Wolfgang Scheinert 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).

  • Specific mixtures of N,N-bis(2-hydroxyalkyl)-4-toluidine derivatives, their preparation and a method of using such specific mixtures
    Patent number: 9512298
    Abstract: A process is provided for preparing new mixtures of N,N-bis(2-hydroxyalkyl)-4-toluidine derivatives which can be used as polymerization accelerators.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: December 6, 2016
    Assignee: LANXESS Deutschland GmbH
    Inventors: Gunter Rauchschwalbe, Wolfgang Scheinert
  • Specific mixtrues of N,N-bis(2-hydroxyalkyl)-4-toluidine derivatives, their preparation and a method of using such specific mixtures
    Publication number: 20130116395
    Abstract: A process is provided for preparing new mixtures of N,N-bis(2-hydroxyalkyl)-4-toluidine derivatives which can be used as polymerization accelerators.
    Type: Application
    Filed: December 21, 2012
    Publication date: May 9, 2013
    Applicant: LANXESS Deutschland
    Inventors: Gunter Rauchschwalbe, Wolfgang Scheinert
  • PROCESS FOR THE MILD DISTILLATIVE SEPARATION OF MIXTURES
    Publication number: 20090032389
    Abstract: The invention relates to a semibatchwise process for the mild distillative separation of mixtures, in a first stage a column being supplied continuously with a feed and the feed being separated at least into different fractions, one of the fractions being removed continuously into a container, and, in a second step, the fraction removed into the container being recycled to the column and being separated again batchwise into different fractions.
    Type: Application
    Filed: September 9, 2008
    Publication date: February 5, 2009
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Ludwig Deibele, Dieter Heinz, Jan Thomas Leu, Johannes-Peter Schafer, Kai Fahrenkamp, Wolfgang Scheinert, Thomas Schilling, Paul Wagner
  • Process for the mild distillative separation of mixtures
    Patent number: 7435319
    Abstract: The invention relates to a semibatchwise process for the mild distillative separation of mixtures, in a first stage a column being supplied continuously with a feed and the feed being separated at least into different fractions, one of the fractions being removed continuously into a container, and, in a second step, the fraction removed into the container being recycled to the column and being separated again batchwise into different fractions.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: October 14, 2008
    Assignee: LANXESS Deutschland GmbH
    Inventors: Ludwig Deibele, Dieter Heinz, Jan Thomas Leu, Johannes-Peter Schäfer, Kai Fahrenkamp, Wolfgang Scheinert, Thomas Schilling, Paul Wagner
  • Specific mixtures of N,N-bis(2-hydroxyalkyl)-4-toluidine derivatives, their preparation and a method of using such specific mixtures
    Publication number: 20060052555
    Abstract: A process is provided for preparing new mixtures of N,N-bis(2-hydroxyalkyl)-4-toluidine derivatives which can be used as polymerization accelerators.
    Type: Application
    Filed: August 19, 2005
    Publication date: March 9, 2006
    Inventors: Gunter Rauchschwalbe, Wolfgang Scheinert
  • Process for the mild distillative separation of mixtures
    Publication number: 20040020757
    Abstract: The invention relates to a semibatchwise process for the mild distillative separation of mixtures, in a first stage a column being supplied continuously with a feed and the feed being separated at least into different fractions, one of the fractions being removed continuously into a container, and, in a second step, the fraction removed into the container being recycled to the column and being separated again batchwise into different fractions.
    Type: Application
    Filed: May 12, 2003
    Publication date: February 5, 2004
    Inventors: Ludwig Deibele, Dieter Heinz, Jan Thomas Leu, Johannes-Peter Schafer, Kai Fahrenkamp, Wolfgang Scheinert, Thomas Schilling, Paul Wagner
  • Process for separating off alkanols from other organic compounds of higher carbon number
    Patent number: 5504239
    Abstract: A first alkanol having from 1 to 3 carbon atoms can be separated off from other organic compounds of higher carbon number from the group comprising other alcohols, polyalcohols, ethers, oxo compounds, esters of carboxylic acids and of carbonic acid, haloaliphatics, amines, amides, hydrocarbons, carboxylic acids and nitriles, which in each case have at least 1 carbon atom more than the first alkanol, where in the case of halogenoaliphatics, halogen substituents are counted as further carbon atoms, by permeation on membranes, if a water content from 1 to 30% by weight, preferably from 5 to 15% by weight, based on the amount of mixture and water, is maintained.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: April 2, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolf Mehl, Wolfgang Scheinert, Ingo Janisch, Andreas Groschl
  • Isoxazolidine insecticides and fungicides
    Patent number: 4681892
    Abstract: Insecticidally, arachnicidally and fungicidally active novel isoxazolidines of the formula ##STR1## in which n is 2 or 3,R.sup.1 is H or alkyl,R.sup.2 is optionally substituted alkyl, cycloalkyl, alkenyl, alkinyl, aryl or a heterocyclic radical which is optionally substituted, andA is a di- or trivalent aryl or heteroaryl radical which is optionally substituted by alkyl, cycloalkyl, aralkyl, alkoxy, alkylthio, aryloxy, arylthio, halogen, CN, OH, halogenoalkyl, halogenoalkoxy, halogenoalkylthio, alkoxyalkyl, optionally halogen-substituted methylenedioxy or ethylenedioxy.Some of the intermediates are also new.
    Type: Grant
    Filed: February 27, 1986
    Date of Patent: July 21, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Axel Ingendoh, Wolfgang Scheinert, Benedikt Becker, Kurt Halcour, Wilhelm Stendel