Patents by Inventor Dagmar Pascale Kunsmann-Keitel

Dagmar Pascale Kunsmann-Keitel 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: 20220144767
    Abstract: A process produces a mono vinyl thioether by reacting acetylene with a compound containing one thiol group and one hydroxy group, referred to as a thiol-hydroxy compound, where the reaction is performed at a pressure below 2 bars.
    Type: Application
    Filed: April 20, 2020
    Publication date: May 12, 2022
    Applicant: BASF SE
    Inventors: Ruth Lohwasser, Pavel Tuzina, Frank Bienewald, Dagmar Pascale Kunsmann-Keitel
  • Publication number: 20210395558
    Abstract: The present invention relates to photocurable compositions, comprising (A1) a N-vinyloxazolidinone of formula (I), wherein R1, R2, R3 and R4 are independently of each other a hydrogen atom or an organic group having not more than 10 carbon atoms, (A2) optionally one, or more second reactive diluents, (B) one, or more oligomers, and (C) a photoinitiator (C), wherein the amount of component (A1) is 5 to 70% by weight based on the amount of components (A1), (A2) and (B), wherein the viscosity of said photocurable composition is in the range 10 to 3000 mPa·s, preferably 10 to 1500 mPa·s at 30° C. The compositions, from which cured three-dimensional shaped articles having balanced mechanical properties combining stiffness with high toughness can be made, are particularly suitable for the production of three-dimensional articles by stereolithography and photopolymer jetting.
    Type: Application
    Filed: September 20, 2019
    Publication date: December 23, 2021
    Inventors: Giovanni D'ANDOLA, Andre FUCHS, Edouard LOISEL, Dagmar Pascale KUNSMANN-KEITEL, Erhard GUENTHER
  • Publication number: 20200010394
    Abstract: Method for preparing 1-hydroxy-2-methyl-3-pentanone (I) by reacting formaldehyde with diethyl ketone in a reactor in the presence of water and a basic component at a temperature of 50 to 150° C. and a pressure of 0.2 to 10 MPa abs, in which the basic component used is a trialkylamine from the group comprising trimethylamine, N,N-dimethylethylamine, N,N-diethylmethylamine, triethylamine, N,N-dimethyl-n-propylamine, N-ethyl-N-methyl-n-propylamine, N,N-dimethylisopropylamine, N-ethyl-N-methylisopropylamine, N,N-dimethyl-n-butylamine, N,N-dimethylisobutylamine and N,N-dimethyl-sec-butylamine, and from the reaction mixture obtained, trialkylamine as low boiler and a bottom product comprising 1-hydroxy-2-methyl-3-pentanone (I) as high boiler are separated in a distillation apparatus, wherein the distillation apparatus is operated at a top pressure of 0.2 to 1 MPa abs.
    Type: Application
    Filed: July 2, 2019
    Publication date: January 9, 2020
    Inventors: Dagmar Pascale KUNSMANN-KEITEL, Georg Heinrich GROSCH, Jan-Dirk ARNDT, Gauthier Luc Maruice AVERLANT, Wolf-Steffen WEISSKER, Marcus Georg SCHREMS, Dan-Tam Daniel TANG
  • Publication number: 20200010395
    Abstract: Method for preparing a ?-hydroxyketone having 4 to 8 carbon atoms by reacting formaldehyde with a branched or unbranched dialkyl ketone having 3 to 7 carbon atoms in the liquid phase in a reactor in the presence of a basic component at a temperature of 50 to 150° C. and a pressure of 0.2 to 10 MPa abs, in which (a) a trialkylamine having 1 to 4 carbon atoms per alkyl group is used as basic component and the reaction (b) is carried out in the presence of 1 to 25% by weight water, based on the liquid phase, and (c) at a molar ratio of trialkylamine to formaldehyde in the liquid phase of from 1 to 5.
    Type: Application
    Filed: July 2, 2019
    Publication date: January 9, 2020
    Inventors: Dagmar Pascale KUNSMANN-KEITEL, Georg Heinrich GROSCH, Jan-Dirk ARNDT, Gauthier Luc Maruice AVERLANT, Wolf-Steffen WEISSKER, Marcus Georg SCHREMS, Dan-Tam Daniel TANG
  • Patent number: 9447295
    Abstract: Use of a radiation curable composition as printing ink for ink-jet printing, wherein the radiation curable composition comprises N-vinyloxazolidinone of formula (I) in which R1 to R4 independently from each other are a hydrogen atom or an organic radical having not more than 10 carbon atoms.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: September 20, 2016
    Assignee: BASF SE
    Inventors: Erhard Guenther, Radwan Abdallah, Giovanni Dandola, Dagmar Pascale Kunsmann-Keitel, Edouard Loisel
  • Patent number: 7777068
    Abstract: A system comprising a) Ni(0) b) from 4 to 10 mol per mol of Ni(0) in a) of a compound (I) of the formula P(X1R1)(X2R2)(X3R3)??(I) where X1, X2, X3 are each, independently of one another, oxygen or a single bond, R1, R2, R3 are, independently of one another, identical or different organic radicals and c) from 1 to 4 mol per mol of Ni(0) in a) of a compound (II) of the formula where X11, X12, X13 X21, X22, X23 are each, independently of one another, oxygen or a single bond, R11, R12 are identical or different, individual or bridged organic radicals, R21, R22 are identical or different, individual or bridged organic radicals and Y is a bridging group is suitable as catalyst for preparing mixtures of monoolefinic C5 mononitriles having nonconjugated C?C and C?N bonds by hydrocyanation of a 1,3-butadiene-containing hydrocarbon mixture and for preparing a dinitrile by hydrocyanation of a mixture of monoolefinic C5 mononitriles having nonconjugated C?C and C?N bonds.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: August 17, 2010
    Assignee: BASF SE
    Inventors: Michael Bartsch, Robert Baumann, Dagmar Pascale Kunsmann-Keitel, Gerd Haderlein, Tim Jungkamp, Marco Altmayer, Wolfgang Siegel
  • Patent number: 7462263
    Abstract: A process for dewatering hydrocyanic acid by distillation, which includes distilling crude hydrocyanic acid containing from 50 to 99.9% by weight of HCN, from 0.1 to 40% by weight of water, from 0 to 15% by weight of carbon oxides and optionally from 0.01 to 1% by weight of an involatile stabilizer, at a pressure of from 1 bar to 2.5 bar, a bottom temperature of from 100° C. to 130° C. and a top temperature of from 25° C. to 54° C., in the absence of a volatile stabilizer, in a distillation column to obtain a top draw stream containing purified, anhydrous hydrocyanic acid and carbon oxides and a bottom draw stream including water and, optionally, the involatile stabilizer.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: December 9, 2008
    Inventors: Michael Bartsch, Robert Baumann, Gerd Haderlein, Miquel Angel Flores, Tim Jungkamp, Hermann Luyken, Jens Scheidel, Wolfgang Siegel, Dagmar Pascale Kunsmann-Keitel, Peter Bassler
  • Patent number: 7439381
    Abstract: A process is described for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene with hydrogen cyanide over at least one catalyst, wherein the 1,3-butadiene and/or hydrogen cyanide is contacted with at least one microporous solid before the reaction.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: October 21, 2008
    Assignee: BASF SE
    Inventors: Tim Jungkamp, Dagmar Pascale Kunsmann-Keitel, Michael Bartsch, Robert Baumann, Gerd Haderlein, Hermann Luyken, Jens Scheidel
  • Patent number: 7361778
    Abstract: A process for isomerizing cis-2-pentenenitrile to trans-3-pentenenitrile in the presence of aluminum oxide as a catalyst, wherein the aluminum oxide has a BET surface area of at least 50 m2/g.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: April 22, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Bartsch, Robert Baumann, Gerd Haderlein, Miquel Angel Flores, Tim Jungkamp, Hermann Luyken, Jens Scheidel, Wolfgang Siegel, Dagmar Pascale Kunsmann-Keitel
  • Patent number: 7345006
    Abstract: A system comprising a) Ni(0) b) from 4 to 10 mol per mol of Ni(0) in a) of a compound (I) of the formula P(X1R1)(X2R2)(X3R3) ??(I) where X1, X2, X3 are each, independently of one another, oxygen or a single bond, R1, R2, R3 are, independently of one another, identical or different organic radicals and c) from 1 to 4 mol per mol of Ni(0) in a) of a compound (II) of the formula where X11, X12, X13 X21, X22, X23 are each, independently of one another, oxygen or a single bond, R11, R12 are identical or different, individual or bridged organic radicals, R21, R22 are identical or different, individual or bridged organic radicals and Y is a bridging group is suitable as catalyst for preparing mixtures of monoolefinic C5 mononitriles having nonconjugated C?C and C?N bonds by hydrocyanation of a 1,3-butadiene-containing hydrocarbon mixture and for preparing a dinitrile by hydrocyanation of a mixture of monoolefinic C5 mononitriles having nonconjugated C?C and C?N bonds.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: March 18, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Bartsch, Robert Baumann, Dagmar Pascale Kunsmann-Keitel, Gerd Haderlein, Tim Jungkamp, Marco Altmayer, Wolfgang Siegel
  • Patent number: 7067685
    Abstract: The invention relates to phosphinites I of formulae (1) or (2), in which R1, R2, R5, R6, R7, R8, R9 independently represent hydrogen, an alkyl or alkylene group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms; R3 is H or methyl; R4 is i-propyl or t-butyl; X is F, Cl or CF3 and n is 1 or 2
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: June 27, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Bartsch, Robert Baumann, Dagmar Pascale Kunsmann-Keitel, Gerd Haderlein, Tim Jungkamp, Marco Altmayer, Wolfgang Siegel, Ferenc Molnar
  • Patent number: 7022866
    Abstract: Phosphonites I of the formula 1 or 2 where R1, R2 are each, independently of one another, hydrogen, an alkyl or alkylene group having from 1 to 8 carbon atoms or an alkoxy group having from 1 to 8 carbon atoms, with the proviso that R1 and R2 are not simultaneously H, R3 is H or methyl, R4 is t-butyl, R5, R6, R7, R8, R9 are each, independently of one another, H or an alkyl or alkylene group having from 1 to 8 carbon atoms.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: April 4, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Bartsch, Robert Baumann, Dagmar Pascale Kunsmann-Keitel, Gerd Haderlein, Tim Jungkamp, Marco Altmayer, Wolfgang Siegel, Ferenc Molnar
  • Patent number: 6852199
    Abstract: A process is provided for the distillative separation of pentene nitrile isomers which have a relative volatility alpha ranging from 1.0 to 1.3 in the pressure range from 1 to 500 kPa, wherein the distillation is carried out in the presence of a liquid diluent which forms with the pentene nitrile isomers, under the same pressure conditions, azeotropes whose relative volatility alpha is higher than that of the pentene nitrile isomers to be separated.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: February 8, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Tim Jungkamp, Dagmar Pascale Kunsmann-Keitel, Robert Baumann, Peter Bassler, Wolfgang Siegel
  • Publication number: 20040235648
    Abstract: Phosphonites I of the formula 1 or 2 1
    Type: Application
    Filed: April 8, 2004
    Publication date: November 25, 2004
    Inventors: Michael Bartsch, Robert Baumann, Dagmar Pascale Kunsmann-Keitel, Gerd Haderlein, Tim Jungkamp, Marco Atmayer, Wolfgang Siegel, Ferenc Molnar
  • Patent number: 6822110
    Abstract: The present invention describes a process for preparing isophoronenitrile by adding HCN to isophorone. The catalyst used is CaO which has a BET surface area of >1.5 m2/g. The use of such a catalyst achieves high yields and selectivities.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: November 23, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Dagmar Pascale Kunsmann-Keitel, Gerold Braun, Ingo Münster, Klaus Mundinger, Gunter Scherhag, Wolfgang Siegel
  • Patent number: 6770770
    Abstract: Novel phosphites have the formula I P(O—R1)x(O—R2)y(O—R3)z(O—R4)p  I where R1: aromatic radical having a C1-C18-alkyl substituent in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic substituent in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic system fused on in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, R2: aromatic radical having a C1-C18-alkyl substituent in the m position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic substituent in the m position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic system fused on in the m position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, where the aromatic radical
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: August 3, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Robert Baumann, Jakob Fischer, Tim Jungkamp, Dagmar Pascale Kunsmann-Keitel, Wolfgang Siegel
  • Publication number: 20040092761
    Abstract: The present invention describes a process for preparing isophoronenitrile by adding HCN to isophorone. The catalyst used is CaO which has a BET surface area of >1.5 m2/g. The use of such a catalyst achieves high yields and selectivities.
    Type: Application
    Filed: November 6, 2003
    Publication date: May 13, 2004
    Inventors: Dagmar Pascale Kunsmann-Keitel, Gerold Braun, Ingo Munster, Klaus Mundinger, Gunter Scherhag, Wolfgang Siegel
  • Publication number: 20040039221
    Abstract: A process is provided for the distillative separation of pentene nitrile isomers which have a relative volatility alpha ranging from 1.0 to 1.3 in the pressure range from 1 to 500 kPa, wherein the distillation is carried out in the presence of a liquid diluent which forms with the pentene nitrile isomers, under the same pressure conditions, azeotropes whose relative volatility alpha is higher than that of the pentene nitrile isomers to be separated.
    Type: Application
    Filed: March 25, 2003
    Publication date: February 26, 2004
    Inventors: Tim Jungkamp, Dagmar Pascale Kunsmann-Keitel, Robert Baumann, Peter Bassler, Wolfgang Siegel