Patents by Inventor Guenter Forster

Guenter Forster 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).

  • Process for preparing ionic liquids by anion exchange
    Patent number: 9090567
    Abstract: Process for preparing salts K+ X?, where K+ is an organic cation and X? is an anion, by anion exchange, wherein a salt K+ Y?, where K+ is as defined above and Y? is an organic anion having a carboxylate, sulfonate or sulfate group, is used as starting material and K+ Y? is reacted with a hydrogen acid HX whose pKa is less than the pKa of the hydrogen acid HY and after the reaction, the salt K+ X? obtained and the hydrogen acid HY obtained are present in separate liquid phases.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: July 28, 2015
    Assignee: BASF SE
    Inventors: Michael Klein, Michael Siemer, Diana Fürst, Günter Forster
  • Distillation of ionic liquids using an auxiliary distillation agent
    Patent number: 8500961
    Abstract: Method of distilling mixtures comprising salts having a melting point of less than 200° C. at 1 bar (ionic liquids), wherein the mixtures additionally comprise an organic compound (called distillation aid below) which is not ionic has a molecular weight of less than 5000 has a boiling point which is at least 5° C. higher compared with the ionic mixtures included in the mixture.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: August 6, 2013
    Assignee: BASF SE
    Inventors: Guenter Forster, Vijay Narayanan Swaminathan
  • PROCESS FOR PREPARING IONIC LIQUIDS BY ANION EXCHANGE
    Publication number: 20120238764
    Abstract: Process for preparing salts K+ X?, where K+ is an organic cation and X? is an anion, by anion exchange, wherein a salt K+ Y?, where K+ is as defined above and Y? is an organic anion having a carboxylate, sulfonate or sulfate group, is used as starting material and K+ Y? is reacted with a hydrogen acid HX whose pKa is less than the pKa of the hydrogen acid HY and after the reaction, the salt K+ X? obtained and the hydrogen acid HY obtained are present in separate liquid phases.
    Type: Application
    Filed: March 13, 2012
    Publication date: September 20, 2012
    Applicant: BASF SE
    Inventors: Michael Klein, Michael Siemer, Diana Fürst, Günter Forster
  • DISTILLATION OF IONIC LIQUIDS USING AN AUXILIARY DISTILLATION AGENT
    Publication number: 20110297530
    Abstract: Method of distilling mixtures comprising salts having a melting point of less than 200° C. at 1 bar (ionic liquids), wherein the mixtures additionally comprise an organic compound (called distillation aid below) which is not ionic has a molecular weight of less than 5000 has a boiling point which is at least 5° C. higher compared with the ionic mixtures included in the mixture.
    Type: Application
    Filed: February 15, 2010
    Publication date: December 8, 2011
    Applicant: BASF SE
    Inventors: Guenter Forster, Vijay Narayanan Swaminathan