Patents by Inventor Sandra KRAMP

Sandra KRAMP 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 producing cis- and trans-enriched MDACH
    Patent number: 10336668
    Abstract: A process for preparing trans-enriched MDACH, including: distilling an MDACH starting mixture in the presence of an auxiliary, which is an organic compound having a molar mass of 62 to 500 g/mol, a boiling point at least 5° C. above the boiling point of cis,cis-2,6-diamino-1-methylcyclohexane, and 2 to 4 functional groups, each of which is independently an alcohol group or a primary, secondary or tertiary amino group. The MDACH starting mixture includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, based on the total amount of MDACH present in the MDACH starting mixture. The MDACH starting mixture includes both trans and cis isomers. Trans-enriched MDACH includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, where the proportion of trans isomers in the mixture is higher than the proportion of trans isomers in the MDACH starting mixture.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: July 2, 2019
    Assignee: BASF SE
    Inventors: Jan-Oliver Weidert, Sandra Kramp, Regina Benfer, Alexander Panchenko, Andreas Weickgenannt, Norbert Gutfrucht, Klaus Breuer, Artur Kozicki, Ralph Busch
  • Isomerization of MDACH
    Patent number: 10329238
    Abstract: A method for isomerizing a starting mixture comprising 2,4-diamino-1-methylcyclohexane, 2,4-MDACH for short, 2,6-diamino-1-methylcyclohexane, 2,6-MDACH for short, or mixtures thereof, wherein the isomerization is carried out in the presence of a supported catalyst with zirconium dioxide as support and ruthenium as active metal.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: June 25, 2019
    Assignee: BASF SE
    Inventors: Andreas Weickgenannt, Sandra Kramp, Jan-Oliver Weidert, Alexander Panchenko, Artur Kozicki, Ralph Busch
  • ISOMERIZATION OF MDACH
    Publication number: 20180327347
    Abstract: A method for isomerizing a starting mixture comprising 2,4-diamino-1-methylcyclohexane, 2,4-MDACH for short, 2,6-diamino-1-methylcyclohexane, 2,6-MDACH for short, or mixtures thereof, wherein the isomerization is carried out in the presence of a supported catalyst with zirconium dioxide as support and ruthenium as active metal.
    Type: Application
    Filed: November 30, 2016
    Publication date: November 15, 2018
    Applicant: BASF SE
    Inventors: Andreas WEICKGENANNT, Sandra KRAMP, Jan-Oliver WEIDERT, Alexander PANCHENKO, Artur KOZICKI, Ralph BUSCH
  • METHOD FOR PRODUCING CIS- AND TRANS-ENRICHED MDACH
    Publication number: 20170260115
    Abstract: A process for preparing trans-enriched MDACH, including: distilling an MDACH starting mixture in the presence of an auxiliary, which is an organic compound having a molar mass of 62 to 500 g/mol, a boiling point at least 5° C. above the boiling point of cis,cis-2,6-diamino-1-methylcyclohexane, and 2 to 4 functional groups, each of which is independently an alcohol group or a primary, secondary or tertiary amino group. The MDACH starting mixture includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, based on the total amount of MDACH present in the MDACH starting mixture. The MDACH starting mixture includes both trans and cis isomers. Trans-enriched MDACH includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, where the proportion of trans isomers in the mixture is higher than the proportion of trans isomers in the MDACH starting mixture.
    Type: Application
    Filed: November 18, 2015
    Publication date: September 14, 2017
    Applicant: BASF SE
    Inventors: Jan-Oliver WEIDERT, Sandra KRAMP, Regina BENFER, Alexander PANCHENKO, Andreas WEICKGENANNT, Norbert GUTFRUCHT, Klaus BREUER, Artur KOZICKI, Ralph BUSCH