Patents by Inventor Fatemeh Ahmadnian

Fatemeh Ahmadnian 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 the purification of a polycarbodiimide
    Patent number: 9481641
    Abstract: A process for purifying a polycarbodiimide comprising (a) providing a mixture comprising a polycarbodiimide and a carbodiimidization catalyst; (b) separating carbodiimidization catalyst from the polycarbodiimide by subjecting the mixture according to (a) to a first distillation, (c) adding an entrainer to the first bottom product obtained from (b) to obtain a mixture; (d) further separating carbodiimidization catalyst from the polycarbodiimide by subjecting the mixture obtained from (c) to a second distillation.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: November 1, 2016
    Assignee: BASF SE
    Inventors: Karl Haeberle, Maria Teresa Hechavarria Fonseca, Lars Rehling, Frank Schaefer, Fatemeh Ahmadnian, Heinrich Bollmann, Markus Bubolz, Carsten Buschmann, Guenter Scholz, Maria Thomas
  • Continuous Process For The Preparation Of Polyoxazolines
    Publication number: 20160090447
    Abstract: A continuous process for the preparation of polyoxazolines comprises mixing monomers, an initiator, and optionally an additive, feeding the mixture into at least one tubular reactor segment with a feed side and an outlet side, and polymerizing the mixture to form the polyoxazolines. A tubular reactor segment comprises a mixer for forming a mixture comprising monomers, an initiator, an additive, a terminating agent, and/or a functionalizing agent, at least first and second tubular reactor segments, and addition devices for the first and second tubular reactor segments.
    Type: Application
    Filed: May 6, 2014
    Publication date: March 31, 2016
    Inventors: Fatemeh Ahmadnian, Valeria Zakharova, Hans-Michael Walter, Andreas Brodhagen, Holger Türk
  • PROCESS FOR THE PURIFICATION OF A POLYCARBODIIMIDE
    Publication number: 20150225336
    Abstract: A process for purifying a polycarbodiimide comprising (a) providing a mixture comprising a polycarbodiimide and a carbodiimidization catalyst; (b) separating carbodiimidization catalyst from the polycarbodiimide by subjecting the mixture according to (a) to a first distillation, (c) adding an entrainer to the first bottom product obtained from (b) to obtain a mixture; (d) further separating carbodiimidization catalyst from the polycarbodiimide by subjecting the mixture obtained from (c) to a second distillation.
    Type: Application
    Filed: September 19, 2013
    Publication date: August 13, 2015
    Applicant: BASF SE
    Inventors: Karl Haeberle, Maria Teresa Hechavarria Fonseca, Lars Rehling, Frank Schaefer, Fatemeh Ahmadnian, Heinrich Bollmann, Markus Bubolz, Carsten Buschmann, Guenter Scholz, Maria Thomas
  • Process for preparing polyether polyols
    Patent number: 8461285
    Abstract: The present invention relates to a process for the catalytic preparation of polyetherols, wherein the power input by means of at least one stirrer and/or by means of at least one pump, based on the reactor volume, is in the range from 0.001 to 8.2 kW/m3.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: June 11, 2013
    Assignee: BASF SE
    Inventors: Fatemeh Ahmadnian, Vinit Chilekar, Andreas Brodhagen, Achim Loeffler, Hermann Graf
  • PROCESS FOR A CONTINUOUS PRODUCTION OF POLYETHEROLS
    Publication number: 20130023700
    Abstract: A process for a continuous production of a polyetherol first involves reacting an alcohol with a starter or an alkoxylated precursor, to give a mixture comprising an alcoholate and water. Water is then removed from the mixture. The process further involves feeding the alcoholate into a bubble column and feeding an alkylene oxide into the bottom of a compartment of the bubble column, such that the alkylene oxide rises in the alcoholate. The alkylene oxide then reacts with the alcoholate or a secondary product from the reaction between the alcoholate and alkylene oxide, to give the polyetherol.
    Type: Application
    Filed: July 18, 2012
    Publication date: January 24, 2013
    Applicant: BASF SE
    Inventors: Vinit Chilekar, Oliver Bey, Andreas Brodhagen, Achim Löffler, Fatemeh Ahmadnian, Ralf Böhling, Christoph Grossmann, Ulrich Kammel, Ronald Adelmann, Thomas Ostrowski, Milind Joshi, Gerrit Waters, Dirk Meckelnburg
  • Deodorization of polymer compositions
    Patent number: 8211987
    Abstract: The present invention relates to a method for reducing residual volatiles from polymer compositions.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: July 3, 2012
    Assignee: BASF SE
    Inventors: Fatemeh Ahmadnian, Wolfgang Loth, Karl-Heinz Wassmer, Andreas Brodhagen, Gerd Konrad
  • DEODORIZATION OF POLYMER COMPOSITIONS
    Publication number: 20110251345
    Abstract: The present invention relates to a method for reducing residual volatiles from polymer compositions.
    Type: Application
    Filed: April 12, 2011
    Publication date: October 13, 2011
    Applicant: BASF SE
    Inventors: Fatemeh AHMADNIAN, Wolfgang LOTH, Karl-Heinz WASSMER, Andreas BRODHAGEN, Gerd KONRAD
  • PROCESS FOR PREPARING POLYETHER POLYOLS
    Publication number: 20110224396
    Abstract: The present invention relates to a process for the catalytic preparation of polyetherols, wherein the power input by means of at least one stirrer and/or by means of at least one pump, based on the reactor volume, is in the range from 0.001 to 8.2 kW/m3.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 15, 2011
    Applicant: BASF SE
    Inventors: Fatemeh AHMADNIAN, Vinit Chilekar, Andreas Brodhagen, Achim Löffler, Hermann Graf