Patents by Inventor Wolfgang Bouquet

Wolfgang Bouquet 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).

  • Method of producing water-soluble nonturbid copolymers of at least one water-soluble N-vinyllactam and at least one hydrophobic comonomer by polymerization under increased pressure
    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
  • Methods of producing water-soluble, non-turbid copolymers of at least one water-soluble N-vinyllactam and at least one hydrophobic comonomer
    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
  • METHODS OF PRODUCING WATER-SOLUBLE, NON-TURBID COPOLYMERS OF AT LEAST ONE WATER-SOLUBLE N-VINYLLACTAM AND AT LEAST ONE HYDROPHOBIC COMONOMER
    Publication number: 20080125554
    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-vinyllactam t
    Type: Application
    Filed: November 29, 2007
    Publication date: May 29, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Rainer Dobrawa, Ralf Widmaier, Klaus Schnell, Karl-Hermann Strube, Jurgen Nieberle, Reinhold Dieing, Bernd de Potzolli, Andreas Gruber, Ulrich Filges, Martin Meister, Josef Neutzner, Wolfgang Bouquet, Eberhard Schupp
  • Method of producing water-soluble nonturbid copolymers of at least one water-soluble n-vinyllactam and at least one hydrophobic comonomer by polymerization under increased pressure
    Publication number: 20070149735
    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: Application
    Filed: December 21, 2006
    Publication date: June 28, 2007
    Applicant: BASF Aktiengesellschaft
    Inventors: Rainer Dobrawa, Ralf Widmaier, Eberhard Schupp, Klaus Schnell, Karl-Hermann Strube, Ulrich Filges, Jurgen Neiberle, Josef Neutzner, Reinhold Dieing, Andreas Gruber, Wolfgang Bouquet