Patents by Inventor Maria Teresa Hechavarria Fonseca

Maria Teresa Hechavarria Fonseca 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
  • Process for preparing polyurethane-polyacrylate hybrid dispersions
    Patent number: 9127125
    Abstract: The present invention relates to a new process for preparing polyurethane-polyacrylate hybrid dispersions, and to the resulting dispersions and their use.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: September 8, 2015
    Assignee: BASF SE
    Inventors: Jens Hartig, Manfred Dargatz, Maria Teresa Hechavarria Fonseca, Bas Lohmeijer
  • 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
  • Latently reactive polyurethane dispersion with activatable crosslinking
    Patent number: 8841369
    Abstract: A description is given of an aqueous polymer dispersion comprising at least one polyurethane, dispersed in aqueous phase and having one or more uretdione groups, and at least one solid polyamine with a deactivated surface, said dispersion being useful as an adhesive, coating material or sealant or for producing adhesive, coating or sealing compositions. The compositions can be activated thermally or by electromagnetic radiation.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: September 23, 2014
    Assignee: BASF SE
    Inventors: Axel Meyer, Maria Teresa Hechavarria Fonseca, Tina Schroeder-Grimonpont, Stefan Dahmen, Christian Beil, Karl-Heinz Schumacher, Thomas Abend
  • Solvents in the preparation of polyuretherane dispersions
    Patent number: 8575244
    Abstract: The present invention relates to substituted N-(cyclo)alkylpyrrolidones as solvents for use in processes for preparing polyurethane dispersions.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: November 5, 2013
    Assignee: BASF SE
    Inventors: Gerd Buelow, Manfred Dargatz, Karl Haeberle, Maria Teresa Hechavarria Fonseca, Karl Ott, Juan Salgado-Valle, Tobias Wabnitz
  • PROCESS FOR PREPARING POLYURETHANE-POLYACRYLATE HYBRID DISPERSIONS
    Publication number: 20130281636
    Abstract: The present invention relates to a new process for preparing polyurethane-polyacrylate hybrid dispersions, and to the resulting dispersions and their use.
    Type: Application
    Filed: December 15, 2011
    Publication date: October 24, 2013
    Applicant: BASF SE
    Inventors: Jens Hartig, Manfred Dargatz, Maria Teresa Hechavarria Fonseca, Bas Lohmeijer
  • LATENTLY REACTIVE POLYURETHANE DISPERSION WITH ACTIVATABLE CROSSLINKING
    Publication number: 20120252926
    Abstract: A description is given of an aqueous polymer dispersion comprising at least one polyurethane, dispersed in aqueous phase and having one or more uretdione groups, and at least one solid polyamine with a deactivated surface, said dispersion being useful as an adhesive, coating material or sealant or for producing adhesive, coating or sealing compositions. The compositions can be activated thermally or by electromagnetic radiation.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 4, 2012
    Applicant: BASF SE
    Inventors: Axel MEYER, Maria Teresa Hechavarria Fonseca, Tina Schröder-Grimonpont, Stefan Dahmen, Christian Beil, Karl-Heinz Schumacher, Thomas Abend
  • SOLVENTS IN THE PREPARATION OF POLYURETHERANE DISPERSIONS
    Publication number: 20120076932
    Abstract: The present invention relates to substituted N-(cyclo)alkylpyrrolidones as solvents for use in processes for preparing polyurethane dispersions.
    Type: Application
    Filed: June 7, 2010
    Publication date: March 29, 2012
    Applicant: BASF SE
    Inventors: Gerd Buelow, Manfred Dargatz, Karl Haeberle, Maria Teresa Hechavarria Fonseca, Karl Ott, Juan Salgado-Valle, Tobias Wabnitz
  • Microcapsules comprising compounds containing carbodiimide groups
    Patent number: 8017047
    Abstract: Microcapsules wherein the capsule wall is formed from an organic polymer (capsule wall polymer for short) and the core of the microcapsules comprises compounds containing carbodiimide groups (carbodiimide compound for short).
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: September 13, 2011
    Assignee: BASF SE
    Inventors: Andre Burghardt, Maria Teresa Hechavarria Fonseca, Karl Haeberle, Oliver Hartz, Marc Rudolf Jung, Karl-Heinz Schumacher, Denise du Fresne von Hohenesche, Hans-Peter Hentze
  • Microcapsules with Acylurea Walls
    Publication number: 20110015072
    Abstract: The present invention relates to a process for producing microcapsules with a capsule wall and a capsule core, comprising the process steps: a) preparation of an oil-in-water emulsion with a disperse phase which comprises the core material and an oligocarbodiimide, an aqueous continuous phase and a protective colloid and b) subsequent reaction of one or more di- and/or polycarboxylic acids and/or water-soluble salts thereof with the oligocarbodiimide, and to microcapsules obtainable by this process.
    Type: Application
    Filed: March 9, 2009
    Publication date: January 20, 2011
    Applicant: BASF SE
    Inventors: Maria Teresa Hechavarria Fonseca, Marc Rudolf Jung
  • AQUEOUS FORMULATIONS AND THE USE THEREOF FOR COLORING OR COATING SUBSTRATES
    Publication number: 20100174018
    Abstract: Aqueous formulations comprise (A) at least one pigment, (B) at least one carbodiimide, (C) at least one random polyurethane, and (D) optionally at least one polyacrylate comprising no interpolymerized comonomers capable of detaching one equivalent of formaldehyde per mole on exposure to temperatures in the range from 100 to 250° C.
    Type: Application
    Filed: June 23, 2008
    Publication date: July 8, 2010
    Applicant: BASF SE
    Inventors: Holger Tuerk, Karl Siemensmeyer, Oihana Elizalde, Maria Teresa Hechavarria Fonseca, Karl Haeberle, Stefan Kuhn
  • MICROCAPSULES COMPRISING COMPOUNDS CONTAINING CARBODIIMIDE GROUPS
    Publication number: 20100065209
    Abstract: Microcapsules wherein the capsule wall is formed from an organic polymer (capsule wall polymer for short) and the core of the microcapsules comprises compounds containing carbodiimide groups (carbodiimide compound for short).
    Type: Application
    Filed: December 11, 2007
    Publication date: March 18, 2010
    Applicant: BASF SE
    Inventors: Andre Burghardt, Maria Teresa Hechavarria Fonseca, Karl Haeberle, Oliver Hartz, Marc Rudolf Jung, Karl-Heinz Schumacher, Denise von Preysing, Hans-Peter Hentze
  • PROCESS FOR TREATING SUBSTRATES
    Publication number: 20090029140
    Abstract: A process for treating a substrate comprises utilizing at least one aqueous formulation comprising (A) at least one acrylate-based binder without interpolymerization of any comonomer capable of detaching, per mole, one equivalent of formaldehyde on exposure to a temperature in the range from 100 to 250° C., (B) at least one carbodiimide, (C) at least one diol, triol or polyol.
    Type: Application
    Filed: January 23, 2007
    Publication date: January 29, 2009
    Applicant: BASF SE
    Inventors: Karl Haberle, Karl Siemensmeyer, Ralf Norenberg, Oihana Elizalde, Maria Teresa Hechavarria Fonseca, Jurgen Reichert, Rolf Strobel