Patents by Inventor Rainer Dobrawa

Rainer Dobrawa 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: 8158686
    Abstract: The use of copolymers obtained by free-radical polymerization of a mixture of i) 30 to 80% by weight of N-vinyllactam, ii) 10 to 50% by weight of vinyl acetate, and iii) 10 to 50% by weight of a polyether, with the proviso that the total of components i), ii) and iii) equals 100% by weight, as solubilizers for slightly water-soluble substances.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: April 17, 2012
    Assignee: BASF SE
    Inventors: Nathalie Bouillo, Marianna Pierobon, Ralf Widmaier, Rainer Dobrawa, Kathrin Meyer-Boehm, Ronald Frans-Maria Lange
  • Publication number: 20120022079
    Abstract: The invention relates to a process for producing formulations of sparingly water-soluble substances, said sparingly soluble substances being present in amorphous embedded form in a copolymer, and said copolymer being obtained by free-radically initiated polymerization of a mixture of i) 30 to 80% by weight of N-vinyllactam, ii) 10 to 50% by weight of vinyl acetate, and iii) 10 to 50% by weight of a polyether, with the proviso that the sum of components i), ii) and iii) equals 100% by weight, which comprises embedding the sparingly soluble substance into the copolymer at temperatures above the melting point of the sparingly soluble substances.
    Type: Application
    Filed: March 30, 2010
    Publication date: January 26, 2012
    Applicant: BASF SE
    Inventors: Kathrin Meyer-Böehm, Rainer Dobrawa, Stefan Fischer, Karl Kolter
  • Publication number: 20110281782
    Abstract: The present application relates to care polymers and fabric and home care compositions comprising such care polymers, as well as processes for making and using such care polymers and such compositions. The performance of the care polymers that Applicants teach, can be further increased by following the emulsification teaching of the present specification and/or combining such care polymers with silicone materials.
    Type: Application
    Filed: May 11, 2011
    Publication date: November 17, 2011
    Inventors: Rajan Keshav Panandiker, Julie Ann Menkhaus, Dieter Boeckh, Rainer Dobrawa, Frank Huelskoetter, Valentin Cepus, Jack Tinsley, Klaus Muehlbach, Markus Brym, Sophia Ebert, Ivette Garcia Castro
  • Publication number: 20110277248
    Abstract: The present application relates to care polymers and fabric and home care compositions comprising such care polymers, as well as processes for making and using such care polymers and such compositions. The performance of the care polymers that Applicants teach, can be further increased by following the emulsification teaching of the present specification and/or combining such care polymers with silicone materials.
    Type: Application
    Filed: May 11, 2011
    Publication date: November 17, 2011
    Inventors: Rajan Keshav Panandiker, Julie Ann Menkhaus, Steven Daryl Smith, Dieter Boeckh, Rainer Dobrawa, Frank Hulskotter, Valentin Cepus
  • Publication number: 20110256193
    Abstract: Use of water-soluble or water-dispersible copolymers which are obtained by polymerization of vinyl acetate and N-vinyllactams in the presence of a polyether, as stabilizing agents for emulsions.
    Type: Application
    Filed: December 10, 2009
    Publication date: October 20, 2011
    Inventors: Kathrin Meyer-Bohm, Rainer Dobrawa, Karl Kolter
  • Publication number: 20110223413
    Abstract: The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution in a surrounding heated gas phase and flowing the gas cocurrent through the polymerization chamber, which comprises coating the water-absorbing polymer particles with at least one sulfinic acid, sulfonic acid and/or salts thereof.
    Type: Application
    Filed: March 9, 2011
    Publication date: September 15, 2011
    Applicant: BASF SE
    Inventors: Norbert Herfert, Thomas Daniel, Rainer Dobrawa
  • Publication number: 20110178183
    Abstract: The use of water-soluble or water-dispersible copolymers which are obtained by free radical-initiated polymerization of a mixture of i) 30 to 80% by weight N-vinyllactam, ii) 10 to 50% by weight vinylacetate and iii) 10 to 50% by weight of a polyether, with the proviso that the total of i), ii) and iii) is equal to 100% by weight, as binders for producing solid active ingredient-containing dosage forms.
    Type: Application
    Filed: September 21, 2009
    Publication date: July 21, 2011
    Inventors: Kathrin Meyer-Böhm, Rainer Dobrawa, Angelika Maschke, Karl Kolter
  • Publication number: 20110071267
    Abstract: A process for producing water-absorbing polymer particles with improved blood absorbence by polymerizing droplets of a monomer solution in a surrounding gas phase, wherein the monomer solution comprises a surfactant.
    Type: Application
    Filed: August 23, 2010
    Publication date: March 24, 2011
    Applicant: BASF SE
    Inventors: Francisco Javier Lopez Villanueva, Markus Linsenbühler, Rainer Dobrawa, Bernd Siegel, Matthias Weismantel
  • Publication number: 20110059329
    Abstract: The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution in a surrounding heated gas phase and flowing the gas cocurrent through the polymerization chamber, wherein the temperature of the gas leaving the polymerization chamber is 130° C. or less, the gas velocity inside the polymerization chamber is at least 0.5 m/s, and the droplets are generated by using a droplet plate having a multitude of bores.
    Type: Application
    Filed: August 25, 2010
    Publication date: March 10, 2011
    Applicant: BASF SE
    Inventors: Rainer Dobrawa, Thomas Daniel, Uwe Stueven, Marco Krüger, Francisco Javier Lopez Villanueva, Norbert Herfert, Michael A. Mitchell
  • Patent number: 7847044
    Abstract: Method of producing copolymers by free-radical polymerization of at least one water-soluble N-vinyllactam and at least one hydrophobic comonomer in an organic solvent in the presence of an initiator, where the polymerization is carried out under a gauge pressure such that evaporation of the components is avoided.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: December 7, 2010
    Assignee: BASF SE
    Inventors: Rainer Dobrawa, Ralf Widmaier, Eberhard Schupp, Klaus Schnell, Karl-Hermann Strube, Ulrich Filges, Jürgen Nieberle, Josef Neutzner, Reinhold Dieing, Andreas Gruber, Wolfgang Bouquet
  • Publication number: 20100204425
    Abstract: A process for preparing copolymers in solid form, where the copolymers are obtained by free-radical polymerization of a mixture of 30 to 80% by weight of N-vinyllactam, 10 to 50% by weight of vinyl acetate and 10 to 50% by weight of a polyether in the presence of at least one solvent, with the proviso that the total of i), ii) and iii) equals 100% by weight, which process comprises removing the solvent from the polymerization mixture with the aid of an extruder.
    Type: Application
    Filed: July 16, 2008
    Publication date: August 12, 2010
    Applicant: BASF SE
    Inventors: Murat Mertoglu, Rainer Dobrawa, Kathrin Meyer-Böhm, Norbert Güntherberg
  • Publication number: 20100137455
    Abstract: Copolymers for use in solubilizing substances which are insoluble in water, substances which are only sparingly soluble in water, and combinations thereof; such copolymers comprising: (a) 60 to 99% by weight of N-vinylcaprolactam; and (b) 1 to 40% by weight of at least one other monomer selected from the group consisting of: C8-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids; N—C8-30 alkyl-substituted amides and N,N—C8-30 dialkyl-substituted amides of acrylic acid, methacrylic acid, or combinations thereof; vinyl esters of aliphatic unbranched C8-C30-carboxylic acids; C8-C30-alkyl vinyl ethers; and mixtures thereof.
    Type: Application
    Filed: August 2, 2006
    Publication date: June 3, 2010
    Applicant: BASF SE
    Inventors: Nathalie Bouillo, Marianna Pierobon, Gerhard Rossler, Rainer Dobrawa, Kathrin Meyer- Boehm, Ronald Frans-Maria Lange
  • Publication number: 20100047203
    Abstract: Use of polyvinyllactam-polyvinyl acetate block copolymers as solubilizers for active ingredients that are sparingly soluble in water.
    Type: Application
    Filed: October 31, 2007
    Publication date: February 25, 2010
    Applicant: BASF SE
    Inventors: Yvonne Dieckmann, Murat Mertoglu, Rainer Dobrawa, Szillard Csihony, Cedric Dieleman, Torsten Knieriem, Sebastian Koltzenburg, Holger Türk, Ulrike Troppmann, Christian Michael Jung
  • Patent number: 7629425
    Abstract: Methods of producing vinyllactam copolymers which include: providing at least one water-soluble N-vinyllactam; providing at least one hydrophobic comonomer; and subjecting the at least one water-soluble N-vinyllactam and the at least one hydrophobic comonomer to free-radical polymerization in an organic solvent in the presence of an initiator, under a combination of process measures selected from the group consisting of A and B; wherein: (A) comprises (i) polymerization under reflux, and at least two of (ii), (iii), (iv), (v), (vi), and (vii), wherein (ii) comprises an addition of at least 5 mol % of N-vinyllactam to the polymerization mixture if at least 70 mol % of the total amount of hydrophobic monomer used have completely reacted, (iii) comprises return of condensate formed in the reflux from below to the polymerization mixture, (iv) comprises introduction of the initiator in the form of a solution in an organic solvent from below into the polymerization mixture, (v) comprises addition of N-vinyllacta
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: December 8, 2009
    Assignee: BASF SE
    Inventors: Rainer Dobrawa, Ralf Widmaier, Klaus Schnell, Karl-Hermann Strube, Jürgen Nieberle, Reinhold Dieing, Bernd de Potzolli, Andreas Gruber, Ulrich Filges, Martin Meister, Josef Neutzner, Wolfgang Bouquet, Eberhard Schupp
  • Publication number: 20090258953
    Abstract: The use of copolymers obtainable by free radical-initiated copolymerization of a) 80 to 99.5% by weight of vinyl acetate and b) 0.5 to 20% by weight of a monoolefinically unsaturated monomer having sulfonate groups as solubilizers for slightly water-soluble substances.
    Type: Application
    Filed: May 31, 2007
    Publication date: October 15, 2009
    Applicant: BASF SE
    Inventors: Rainer Dobrawa, Nathalie Bouillo, Ronald Frans Maria Lange, Kathrin Meyer-Böhm, Murat Mertoglu
  • Patent number: 7572870
    Abstract: Method of producing vinyllactam copolymers by free-radical polymerization of at least one water-soluble N-vinyllactam and at least one hydrophobic comonomer in an organic solvent in the presence of an initiator under reflux conditions, where following conversion of 90 to 99% by weight of the vinyllactam used, some of the solvent is distilled off and the polymerization is continued.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: August 11, 2009
    Assignee: BASF SE
    Inventors: Rainer Dobrawa, Ralf Widmaier, Eberhard Schupp, Klaus Schnell
  • Patent number: 7572871
    Abstract: Method of producing vinyllactam copolymers by free-radical polymerization of at least one water-soluble N-vinyllactam and at least one hydrophobic comonomer in an organic solvent in the presence of an initiator under reflux conditions, where the initiator is introduced into the polymerization mixture from below.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: August 11, 2009
    Assignee: BASF SE
    Inventors: Rainer Dobrawa, Ralf Widmaier, Eberhard Schupp, Klaus Schnell
  • Publication number: 20090036550
    Abstract: Vinyllactam copolymers modified with polyalkylene oxide side-chains, and use thereof as solubilizers for substances which are sparingly soluble in water, and preparations comprising such copolymers.
    Type: Application
    Filed: November 30, 2006
    Publication date: February 5, 2009
    Applicant: BASF SE
    Inventors: Nathalie Bouillo, Alexander Khvorost, Ingo Munster, Rainer Dobrawa, Kathrin Meyer-Bohm, Ronald Frans Maria Lange
  • Publication number: 20080300320
    Abstract: Use of polyvinyllactam-polyalkylene oxide block copolymers as solubilizers for sub-stances which are sparingly soluble in water.
    Type: Application
    Filed: November 30, 2006
    Publication date: December 4, 2008
    Applicant: BASF SE
    Inventors: Ronald Frans Maria Lange, Nathalie Bouillo, Ingo Munster, Klemens Mathauer, Kathrin Meyer-Bohm, Rainer Dobrawa
  • Publication number: 20080293828
    Abstract: The use of copolymers obtained by free-radical polymerization of a mixture of i) 30 to 80% by weight of N-vinyllactam, ii) 10 to 50% by weight of vinyl acetate, and iii) 10 to 50% by weight of a polyether, with the proviso that the total of components i), ii) and iii) equals 100% by weight, as solubilizers for slightly water-soluble substances.
    Type: Application
    Filed: October 25, 2006
    Publication date: November 27, 2008
    Applicant: BASF SE
    Inventors: Nathalie Bouillo, Marianna Pierobon, Ralf Widmaier, Rainer Dobrawa, Kathrin Meyer-Bohm, Ronald Frans-Maria Lange