Patents by Inventor Veit Stegmann

Veit Stegmann 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).

  • Patent number: 10889683
    Abstract: The present invention relates to the polyamines N,N?-diaminopropyl-2-methyl-cyclohexane-1,3-diamine and N,N?-diaminopropyl-4-methyl-cyclohexane-1,3-diamine and mixtures thereof, to the use thereof as curing agents for epoxy resin and to a curable composition comprising epoxy resin and these polyamines. Even at low temperatures this curing agent/the corresponding curable composition cures rapidly and is early-stage water resistant and is thus especially suitable for floor coatings. The invention further relates to the curing of this composition and the cured epoxy resin obtained by curing of this composition.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: January 12, 2021
    Assignee: BASF SE
    Inventors: Christian Gruenanger, Alexander Panchenko, Irene Gorman, Veit Stegmann, Johann-Peter Melder, Norbert Gutfrucht, Martin Ernst, Marc Hofmann
  • Publication number: 20200291165
    Abstract: A method for preparing a thermoplastic polyoxazolidone, the method including catalytically reacting one or more aromatic diisocyanates and one or more diepoxides, wherein the one or more diepoxides comprise one or more 2-phenylpropane-1,3-diol diglycidyl ether derivatives. The one or more diepoxides further contain one or more diglycidyl ethers of aromatic diols.
    Type: Application
    Filed: September 20, 2018
    Publication date: September 17, 2020
    Applicant: BASF SE
    Inventors: Irene GORMAN, Veit STEGMANN, Hans-Josef THOMAS
  • Publication number: 20200071456
    Abstract: The present invention relates to the polyamines N,N?-diaminopropyl-2-methyl-cyclohexane-1,3-diamine and N,N?-diaminopropyl-4-methyl-cyclohexane-1,3-diamine and mixtures thereof, to the use thereof as curing agents for epoxy resin and to a curable composition comprising epoxy resin and these polyamines. Even at low temperatures this curing agent/the corresponding curable composition cures rapidly and is early-stage water resistant and is thus especially suitable for floor coatings. The invention further relates to the curing of this composition and the cured epoxy resin obtained by curing of this composition.
    Type: Application
    Filed: December 4, 2017
    Publication date: March 5, 2020
    Applicant: BASF SE
    Inventors: Christian GRUENANGER, Alexander PANCHENKO, Irene GORMAN, Veit STEGMANN, Johann-Peter MELDER, Norbert GUTFRUCHT, Martin ERNST, Marc HOFMANN
  • Patent number: 10434503
    Abstract: The present invention relates to A process for the production of a molding, comprising (I) providing a zeolitic material; (II) mixing the zeolitic material provided in step (I) with one or more binders; (III) kneading of the mixture obtained in step (II); (IV) molding of the kneaded mixture obtained in step (III) to obtain one or more moldings; (V) drying of the one or more moldings obtained in step (IV); and (VI) calcining of the dried molding obtained in step (V); wherein the zeolitic material provided in step (I) displays a water adsorption ranging from 1 to 15 wt.-% when exposed to a relative humidity of 85%, as well as to a molding obtainable or obtained according to the inventive process in addition to a molding per se and to their respective use.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: October 8, 2019
    Assignee: BASF SE
    Inventors: Andrei-Nicolae Parvulescu, Ulrich Mueller, Hans-Juergen Luetzel, Joaquim Henrique Teles, Dominic Riedel, Bianca Seelig, Daniel Urbanczyk, Ulrike Wegerle, Michael Hesse, Andreas Walch, Volker Bendig, Veit Stegmann, Henning Althoefer, Boris Gaspar, Frank Stallmach, Anne Kristin Pusch
  • Publication number: 20160250624
    Abstract: The present invention relates to A process for the production of a molding, comprising (I) providing a zeolitic material; (II) mixing the zeolitic material provided in step (I) with one or more binders; (III) kneading of the mixture obtained in step (II); (IV) molding of the kneaded mixture obtained in step (III) to obtain one or more moldings; (V) drying of the one or more moldings obtained in step (IV); and (VI) calcining of the dried molding obtained in step (V); wherein the zeolitic material provided in step (I) displays a water adsorption ranging from 1 to 15 wt.-% when exposed to a relative humidity of 85%, as well as to a molding obtainable or obtained according to the inventive process in addition to a molding per se and to their respective use.
    Type: Application
    Filed: October 22, 2014
    Publication date: September 1, 2016
    Applicant: BASF SE
    Inventors: Andrei-Nicolae PARVULESCU, Ulrich MUELLER, Hans-Juergen LUETZEL, Joaquim Henrique TELES, Dominic RIEDEL, Bianca SEELIG, Daniel URBANCZYK, Ulrike WEGERLE, Michael HESSE, Andreas WALCH, Volker BENDIG, Veit STEGMANN, Henning ALTHOEFER, Boris GASPAR, Frank STALLMACH, Anne Kristin PUSCH
  • Publication number: 20140213697
    Abstract: The present invention relates to a curable composition which comprises epoxy resin, epoxy-group-bearing reactive diluent and the hardener 2,2?,6,6?-tetramethyl-4,4?-methylenebis(cyclohexylamine), curing thereof, and the cured epoxy resin obtainable therefrom, and the use of 2,2?,6,6?-tetramethyl-4,4?-methylenebis(cyclohexylamine) as a hardener for epoxy resins in curable compositions with epoxy-group-bearing reactive diluent.
    Type: Application
    Filed: January 27, 2014
    Publication date: July 31, 2014
    Applicant: BASF SE
    Inventors: Achim KAFFEE, Miran YU, Monika CHARRAK, Kirsten DAHMEN, Veit STEGMANN, Gerd HADERLEIN, Alexander PANCHENKO
  • Patent number: 8562862
    Abstract: The present invention relates to a water-absorbing material obtainable by a process comprising the steps of A) treating a particulate, non-surface-crosslinked, water-absorbing polymer with a mixture comprising an aqueous solvent and at least one salt of a transition metal and B) irradiating the polymer treated according to A) with UV radiation, to a process for its production and to articles comprising the water-absorbing material.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: October 22, 2013
    Assignee: BASF SE
    Inventors: Veit Stegmann, Klemens Massonne, Franz Niklaus Windlin, Reinhold Schwalm, Dieter Hermeling, Thomas Daniel, Stefan Bruhns
  • Patent number: 8486669
    Abstract: A process for preparing glucose from a cellulose material, in which a cellulose-comprising starting material is provided and treated with a liquid treatment medium comprising an ionic liquid whose anions are selected from among polyatomic anions and the cellulose-comprising material which has been treated with the ionic liquid is subjected to an enzymatic hydrolysis, is described.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: July 16, 2013
    Assignee: BASF SE
    Inventors: Tim Balensiefer, Julia Brodersen, Giovanni D'Andola, Klemens Massonne, Stephan Freyer, Veit Stegmann
  • Patent number: 8404149
    Abstract: The present disclosure relates to an absorbent structure for use in a diaper for babies and infants, a feminine hygiene article and/or an incontinence article, said absorbent structure comprising a water-absorbing material, the water-absorbing material being obtainable by a process comprising the steps of A) treating a particulate, non-surface-crosslinked, water-absorbing polymer with a mixture comprising an aqueous solvent and at least one salt of a transition metal and B) irradiating the polymer treated according to A) with UV radiation, and to a process for its production.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: March 26, 2013
    Assignee: The Procter & Gamble Company
    Inventors: Veit Stegmann, Klemens Massonne, Franz Niklaus Windlin, Reinhold Schwalm, Dieter Hermeling, Thomas Daniel, Stefan Bruhns
  • Patent number: 8354356
    Abstract: The invention relates to a process for preparing DMC catalysts by reaction of cyanometalate compounds with metal salts, wherein the reaction is carried out in ionic liquids as solvents or suspension media.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: January 15, 2013
    Assignee: BASF SE
    Inventors: Michael Triller, Matthias Schopohl, Veit Stegmann, Thomas Ostrowski
  • Patent number: 8231792
    Abstract: The invention relates to a process for purifying an ionic liquid, which comprises the steps (a) partial crystallization of the ionic liquid from its melt and (b) separation of the crystals from the residual melt.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: July 31, 2012
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Fiene, Harald Rust, Klemens Massonne, Veit Stegmann, Oliver Huttenloch, Jörg Heilek
  • Publication number: 20120116068
    Abstract: The present invention describes a process for the degradation of cellulose by dissolving the cellulose in an ionic liquid and treating it with an acid, if appropriate with addition of water.
    Type: Application
    Filed: January 13, 2012
    Publication date: May 10, 2012
    Applicant: BASF SE
    Inventors: Veit STEGMANN, Stephan Freyer, Klemens Massonne, Giovanni D'Andola, Werner Mormann, Markus Wezstein, Wei Leng
  • Patent number: 8163215
    Abstract: A solution system for biopolymers in the form of carbohydrates based on a molten ionic liquid, additives optionally being contained in the solution system, is described. This solution system contains a protic solvent or a mixture of several protic solvents, and in the case where the protic solvent is solely water, this is present in the solution system in an amount of more than about 5 wt. %. Carbohydrates can be incorporated into the solution system, in particular in the form of starch, cellulose and derivatives thereof, and it can then be used for regeneration of the carbohydrates contained therein. A particularly advantageous process for the preparation of the solution system containing the carbohydrates and for the preparation of regenerated carbohydrates, in particular in the form of regenerated cellulose fibers, is moreover described. The invention accordingly also provides such spun fibers as are distinguished in that they are non-fibrillating.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: April 24, 2012
    Assignee: BASF Aktiengesellschaft
    Inventors: Veit Stegmann, Klemens Massonne, Matthias Maase, Eric Uerdingen, Michael Lutz, Frank Hermanutz, Frank Gaehr
  • Publication number: 20120010334
    Abstract: The present invention relates to a liquid composition which comprises at least one polymer and at least one ionic liquid, the cations of which are derived from polycyclic amidine bases, and a process for isolating cellulose from cellulose-containing sources using at least one such ionic liquid.
    Type: Application
    Filed: September 20, 2011
    Publication date: January 12, 2012
    Applicant: BASF SE
    Inventors: Giovanni D'ANDOLA, Laszlo Szarvas, Klemens Massonne, Veit Stegmann
  • Patent number: 8044120
    Abstract: The present invention relates to a liquid composition which comprises at least one polymer and at least one ionic liquid, the cations of which are derived from polycyclic amidine bases, and a process for isolating cellulose from cellulose-containing sources using at least one such ionic liquid.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: October 25, 2011
    Assignee: BASF Aktiengesellschaft
    Inventors: Giovanni D'Andola, Laszlo Szarvas, Klemens Massonne, Veit Stegmann
  • Publication number: 20110178251
    Abstract: The present invention relates to a water-absorbing material obtainable by a process comprising the steps of A) treating a particulate, non-surface-crosslinked, water-absorbing polymer with a mixture comprising an aqueous solvent and at least one salt of a transition metal and B) irradiating the polymer treated according to A) with UV radiation, to a process for its production and to articles comprising the water-absorbing material.
    Type: Application
    Filed: September 8, 2009
    Publication date: July 21, 2011
    Applicant: BASF SE
    Inventors: Veit Stegmann, Klemens Massonne, Franz Niklaus Windlin, Reinhold Schwalm, Dieter Hermeling, Thomas Daniel, Stefan Bruhns
  • Publication number: 20100297445
    Abstract: The present invention relates to a process for producing spherical particles of at least one material, which comprises the steps: (A) preparation of a solution or dispersion of the at least one material in at least one water-miscible solvent or dispersion medium, (B) conversion of the solution or dispersion obtained in step (A) into individual portions comprising an amount of the at least one material corresponding to the amount present in the spherical particles by underwater pelletization and (C) introduction of the portions obtained in step (B) into a medium which is miscible with the solvent or dispersion medium from step (A) and in which the material used in step (A) is insoluble so that the solvent or dispersion medium used in step (A) is replaced by the medium which is miscible with the solvent or dispersion medium from step (A) and the material solidifies to form the spherical particle.
    Type: Application
    Filed: November 20, 2008
    Publication date: November 25, 2010
    Applicant: BASF SE
    Inventors: Norbert Guentherberg, Karl-Peter Farwerck, Armin Kurps, Daniel Barrera-Medrano, Eric Uerdingen, Veit Stegmann, Michael Lutz
  • Publication number: 20100297532
    Abstract: The present invention relates to a process for the work-up of acidic or basic ionic liquids (IL) of the general formula (I), [A]+(1/n)*[Y]???(I) where [A]+ is a quaternary ammonium cation and (1/n)*[Y]n? is one anion equivalent of an n-fold charged anion, which comprises adding a conjugate acid-base pair selected from among compounds of the formula (II), [A]+[X]???(II) where [A]+ has the meaning given for the ionic liquid and [X]? is a conjugate base to the ionic liquid (IL).
    Type: Application
    Filed: January 8, 2009
    Publication date: November 25, 2010
    Applicant: BASF SE
    Inventors: York Alexander Beste, Veit Stegmann, Matthias Maase
  • Publication number: 20100267596
    Abstract: The present invention relates to a method for improving the hydrolysis stability of an ionic liquid (IL), in which at least one tertiary amine or one quaternary ammonium compound different from the ionic liquid (IL) is added to an ionic liquid (IL).
    Type: Application
    Filed: December 12, 2008
    Publication date: October 21, 2010
    Applicant: BASE SE
    Inventors: Georg Degen, Veit Stegmann, Klaus Ebel, Klemens Massonne, Laszlo Szarvas, Uwe Vagt, Matthias Maase
  • Patent number: 7767852
    Abstract: Process for preparing aminodihalophosphines, diaminohalophosphines, triaminophosphines, phosphorous ester diamides, aminophosphines, diaminophosphines, phosphorous ester amide halides and aminophosphine halides with elimination of an acid in the presence of an auxiliary base, wherein the auxiliary base b) and the acid form a salt which is liquid at temperatures at which the desired product is not significantly decomposed during the process of separating off the liquid salt and c) the salt of the auxiliary base forms two immiscible liquid phases with the desired product or the solution of the desired product in a suitable solvent.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: August 3, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Volland, Verena Seitz, Matthias Maase, Miguel Flores, Rainer Papp, Klemens Massonne, Veit Stegmann, Klaus Halbritter, Ralf Noe, Michael Bartsch, Wolfgang Siegel, Michael Becker, Oliver Huttenloch