Patents by Inventor Monica Haag

Monica Haag 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).

  • Publication number: 20190330426
    Abstract: A single-screw extruder for changing a morphology of superabsorbent polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw in the invention has a first pitch value of a pitch of the screw flights along the conveying zone of the channel and, following in conveying direction, has a second pitch value of the pitch of the screw flights along the conveying zone of the channel, where the second pitch value is smaller than the first pitch value.
    Type: Application
    Filed: December 15, 2017
    Publication date: October 31, 2019
    Inventors: Monica Haag, Stephan Deuerlein, Roland Krauss, Volker Klock, Holger Barthel
  • Publication number: 20190308358
    Abstract: A single-screw extruder for changing a morphology of a superabsorbent polymer, specifically a polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw has a pitch value of a pitch of the screw flights along the conveying zone of the channel, where the channel has a mixing-element arrangement with at least one mixing element which protrudes into the channel of the single-screw extruder and which is configured for the mixing of the SAP polymer gel.
    Type: Application
    Filed: December 15, 2017
    Publication date: October 10, 2019
    Inventors: Monica Haag, Stephan Deuerlein, Holger Barthel, Volker Klock, Roland Krauss
  • Patent number: 10179185
    Abstract: A process for producing water-absorbing polymer particles is provided, comprising a) a polymerization step in which an aqueous monomer solution comprising at least one ethylenically unsaturated monomer M which bears acid groups and may have been at least partly neutralized and at least one crosslinker is polymerized to obtain an aqueous polymer gel; b) a pelletization step in which the aqueous polymer gel having a solids content of 35 to 70% by weight and a temperature of 75 to 125° C. is forced from a high-pressure zone through a die plate into a low-pressure zone and pellets are obtained, the pressure differential between the high-pressure zone and the low-pressure zone being 4 to less than 14 bar and the orifice ratio of the die plate being 30 to 80%; c) a drying step in which the pellets are dried to a moisture content of less than 10% by weight; d) a grinding step and a classifying step to obtain water-absorbing polymer particles; and e) surface crosslinking of the water-absorbing polymer particles.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: January 15, 2019
    Assignee: BASF SE
    Inventors: Markus Braun, Monica Haag, Stephan Deuerlein, Volker Klock, Roland Krauss
  • Patent number: 9833766
    Abstract: Crosslinked polymer particles having a) a proportion of particles having a particle size of 150 to 300 ?m of at least 20% by weight, b) a free swell rate of the entirety of the polymer particles FSRoverall of at least 0.25 g/g·s, c) a difference ?FSR of at least 0.15, d) a centrifuge retention capacity CRC of at least 25.0 g/g, and e) a permeability of the swollen gel bed SFC of at least 90×10?7 cm3·s/g are disclosed.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: December 5, 2017
    Assignee: BASF SE
    Inventors: Markus Braun, Monica Haag, Stephan Deuerlein
  • Patent number: 9822203
    Abstract: A process for producing water-absorbing polymer particles having high free swell rate and high centrifuge retention capacity with simultaneously high permeability of the swollen gel bed by polymerization of an aqueous monomer solution in a polymerization reactor having at least two shafts (kneaders) which rotate in an axially parallel manner, subsequent extrusion at high temperatures and thermal surface postcrosslinking.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: November 21, 2017
    Assignee: BASF SE
    Inventors: Monica Haag, Roland Krauss, Thomas Gieger, Volker Klock, Matthias Weismantel
  • Publication number: 20170065739
    Abstract: A process for producing water-absorbing polymer particles is provided, comprising a) a polymerization step in which an aqueous monomer solution comprising at least one ethylenically unsaturated monomer M which bears acid groups and may have been at least partly neutralized and at least one crosslinker is polymerized to obtain an aqueous polymer gel; b) a pelletization step in which the aqueous polymer gel having a solids content of 35 to 70% by weight and a temperature of 75 to 125° C. is forced from a high-pressure zone through a die plate into a low-pressure zone and pellets are obtained, the pressure differential between the high-pressure zone and the low-pressure zone being 4 to less than 14 bar and the orifice ratio of the die plate being 30 to 80%; c) a drying step in which the pellets are dried to a moisture content of less than 10% by weight; d) a grinding step and a classifying step to obtain water-absorbing polymer particles; and e) surface crosslinking of the water-absorbing polymer particles.
    Type: Application
    Filed: May 7, 2015
    Publication date: March 9, 2017
    Inventors: Markus Braun, Monica Haag, Stephan Deuerlein, Volker Klock, Roland Krauss
  • Publication number: 20170050170
    Abstract: Water-absorbing polymer particles are formed from crosslinked polymer chains comprising predominantly polymerized units of at least partly neutralized acrylic acid. They have a) a proportion of particles having a particle size of 150 to 300 ?m of at least 20% by weight, b) a free swell rate of the entirety of the polymer particles FSRoverall of at least 0.25 g/g·s, c) a difference ?FSR of at least 0.15, d) a centrifuge retention capacity CRC of at least 25.0 g/g, and e) a permeability of the swollen gel bed SFC of at least 90×10?7 cm3·s/g. ?FSR is defined as =?FSR=FSR150-300 ?m?FSRoverall in which FSR150-300 ?m represents the free swell rate of the polymer particles having a particle size of 150 to 300 ?m. The absorption capacity of the entirety of the polymer particles is substantially utilized even in the case of segregation of particles of different size.
    Type: Application
    Filed: May 7, 2015
    Publication date: February 23, 2017
    Applicant: BASF SE
    Inventors: Markus Braun, Monica Haag, Stephan Deuerlein
  • Publication number: 20150376318
    Abstract: A process for producing water-absorbing polymer particles having high free swell rate and high centrifuge retention capacity with simultaneously high permeability of the swollen gel bed by polymerization of an aqueous monomer solution in a polymerization reactor having at least two shafts (kneaders) which rotate in an axially parallel manner, subsequent extrusion at high temperatures and thermal surface postcrosslinking.
    Type: Application
    Filed: January 20, 2014
    Publication date: December 31, 2015
    Applicant: BASF SE
    Inventors: Monica HAAG, Roland KRAUSS, Thomas GIEGER, Volker KLOCK, Matthias WEISMANTEL
  • Patent number: 7750096
    Abstract: An aqueous polymer dispersion is prepared by reacting at least one olefin in the presence of at least one polymerization catalyst and one emulsifier in an aqueous medium by a process wherein the polymerization catalyst is prepared in an in situ reaction by reacting the ligand compound 2,6-dichloro-para-benzoquinone (Ia) and/or 2,3,6-trichloro-para-benzoquinone (Ib) with a phosphine compound or diphosphine compound and with a metal compound and the polymerization reaction is effected in an aqueous medium.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: July 6, 2010
    Assignee: BASF SE
    Inventors: Mubarik Mahmood Chowdhry, Ulrich Nieken, Monica Haag
  • Publication number: 20090198028
    Abstract: The present invention relates to a process for the preparation of polymers by controlled free radical polymerization of monomers capable of free radical polymerization in the presence of 1,2-dithiol-3-thiones as chain transfer agents.
    Type: Application
    Filed: June 20, 2007
    Publication date: August 6, 2009
    Applicant: BASF SE
    Inventors: Szilard Csihony, Arno Lange, Yvonne Dieckmann, Monica Haag
  • Publication number: 20090030093
    Abstract: Process for the emulsion polymerization of one or more olefins by reacting a quinoid compound with a metal compound and a phosphine compound which is substituted by at least one polar radical and subsequently using the reaction product for the polymerization or copolymerization of olefins in water or in a solvent mixture which contains at least 50% by weight of water and at least one emulsifier.
    Type: Application
    Filed: July 28, 2008
    Publication date: January 29, 2009
    Applicant: BASF Aktiengessellschaft
    Inventors: Mubarik Mahmood Chowdhry, Xavier Sava, Monica Haag, Jacob Wildeson, Stefan Mecking, Ludmila Kolb
  • Patent number: 7417098
    Abstract: Process for the emulsion polymerization of one or more olefins by reacting a quinoid compound with a metal compound and a phosphine compound which is substituted by at least one polar radical and subsequently using the reaction product for the polymerization or copolymerization of olefins in water or in a solvent mixture which contains at least 50% by weight of water and at least one emulsifier.
    Type: Grant
    Filed: November 6, 2004
    Date of Patent: August 26, 2008
    Assignee: BASF SE
    Inventors: Mubarik Mahmood Chowdhry, Xavier Sava, Monica Haag, Jacob Wildeson, Stefan Mecking, Ludmila Kolb
  • Publication number: 20080182915
    Abstract: Process for the emulsion polymerization of one or more olefins by preparing a catalyst by reacting a quinoid compound with a metal compound and a phosphine compound which is substituted by at least one polar radical; and subsequently (co)polymerizing said one or more olefins in water or in a solvent mixture which contains at least 50% by weight of water and at least one emulsifier.
    Type: Application
    Filed: April 1, 2008
    Publication date: July 31, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Mubarik Mahmood Chowdhry, Xavier Sava, Monica Haag, Jacob Wildeson, Stefan Mecking, Ludmila Kolb
  • Publication number: 20070167566
    Abstract: An aqueous polymer dispersion is prepared by reacting at least one olefin in. the presence of at least one polymerization catalyst and one emulsifier in an aqueous medium by a process wherein the polymerization catalyst is prepared in an in situ reaction by reacting the ligand compound 2,6-dichloro-para-benzoquinone (Ia) and/or 2,3,6-trichloro-para-benzoquinone (Ib) with a phosphine compound or diphosphine compound and with a metal compound and the polymerization reaction is effected in an aqueous medium.
    Type: Application
    Filed: July 8, 2004
    Publication date: July 19, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Mubarik Chowdhry, Ulrich Nieken, Monica Haag
  • Publication number: 20070043163
    Abstract: Process for the emulsion polymerization of one or more olefins by reacting a quinoid compound with a metal compound and a phosphine compound which is substituted by at least one polar radical and subsequently using the reaction product for the polymerization or copolymerization of olefins in water or in a solvent mixture which contains at least 50% by weight of water and at least one emulsifier.
    Type: Application
    Filed: November 6, 2004
    Publication date: February 22, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Mubarik Chowdhry, Xavier Sava, Monica Haag, Jacob Wildeson, Stefan Mecking, Ludmila Kolb