Patents by Inventor Thomas Suefke

Thomas Suefke 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: 8119734
    Abstract: The present invention relates to a process for preparing aqueous dispersions. The invention also relates to the formation of core-shell particles in aqueous dispersions. The core-shell particles are useful as impact-modifiers for poly(meth)acrylate moulding compositions.
    Type: Grant
    Filed: October 18, 2003
    Date of Patent: February 21, 2012
    Assignee: Evonik Roehm GmbH
    Inventors: Klaus Schultes, Thomas Suefke, Reiner Mueller, Hartmut Schikowsky, Werner Hoess
  • Publication number: 20110218291
    Abstract: The present invention relates to a process for preparing aqueous dispersions. The invention also relates to the formation of core-shell particles in aqueous dispersions. The core-shell particles are useful as impact-modifiers for poly(meth)acrylate moulding compositions.
    Type: Application
    Filed: May 18, 2011
    Publication date: September 8, 2011
    Applicant: EVONIK ROEHM GMBH
    Inventors: Klaus SCHULTES, Thomas Suefke, Reiner Mueller, Hartmut Schikowsky, Werner Hoess
  • Patent number: 7833546
    Abstract: The invention relates to a method for producing a pharmaceutical dosage form as tablets, pellets and/or in the form of an active ingredient-containing matrix, whereby the tablets, pellets and/or active ingredient-containing matrix contain a pharmaceutical active ingredient and a copolymer serving as a coating agent and/or binding agent, and optionally contain a core and pharmaceutically common additives. According to the invention, the copolymer, the pharmaceutical active ingredient, the optionally present core and/or the pharmaceutically common additives are processed using known techniques by melting, injection molding, extrusion, wet granulation, casting, dipping, spreading out, spraying on, or pressing to form tablets, pellets and/or an active ingredient-containing matrix. The inventive method is characterized in that a copolymer is used that consists of 20 to 34 wt. % methacrylic acid, 20 to 69 wt. % methylacrylate and 0 to 40 wt. % ethylacrylate and, optionally, of 0 to 10 wt.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: November 16, 2010
    Assignee: Evonik Roehm GmbH
    Inventors: Hans-Ulrich Petereit, Thomas Suefke, Christian Meier, Michael Schnabel, Ingrid Blesing, Stefan Grimm
  • Patent number: 7605193
    Abstract: The invention describes a novel impact modifier, built up from core-shell1- and shell 2, the core being capable of plastic deformation. Good mechanical properties were achieved using a small amount of impact modifier.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: October 20, 2009
    Assignee: Roehm GmbH & Co. KG
    Inventors: Klaus Schultes, Thomas Suefke, Reiner Mueller, Thomas Arndt, Goerg Michler, Joachim Laatsch
  • Patent number: 7381552
    Abstract: The invention relates to a macroporous plastics bead material with an average particle diameter from 10 to 1000 ?m, containing a copolymer of a) 5-60 wt. % vinylically polymerizable monomers with a water solubility of at least 1% at 20° C., b) 1-40 wt. % vinylically polymerizable monomers with an additional functional group, which can enter into covalent bonds with the nucleophilic groups of the ligands in a polymer-like reaction, c) 10-40 wt. % hydrophilic, crosslinking radical-polymerizable monomers with two or more ethylenically unsaturated polymerizable groups and d) 10-60 wt. % vinylically polymerizable monomers with a water solubility of at most 1% at 20° C. are contained, as a rule with the monomers a) to d) adding up to 100%.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: June 3, 2008
    Assignee: Roehm GmbH & Co. KG
    Inventors: Stefan Menzler, Hans-Ulrich Petereit, Christian Meier, Thomas Boller, Thomas Suefke, Klaus Schultes, Roger Recktenwald
  • Publication number: 20070123610
    Abstract: The invention describes a novel impact modifier, built up from core-shell1- and shell 2, the core being capable of plastic deformation. Good mechanical properties were achieved using a small amount of impact modifier.
    Type: Application
    Filed: November 22, 2006
    Publication date: May 31, 2007
    Applicant: ROEHM GMBH & CO. KG
    Inventors: Klaus Schultes, Thomas Suefke, Reiner Mueller, Thomas Arndt, Goerg Michler, Joachim Laatsch
  • Patent number: 7179852
    Abstract: The invention relates to a novel impact-resistance modifier, constructed from a core-shell 1 and a shell 2, whereby the core is plastically deformable. The invention is characterised by excellent mechanical properties obtained by a low content of impact-resistance modifier.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: February 20, 2007
    Assignee: Roehm GmbH & Co. KG
    Inventors: Klaus Schultes, Thomas Suefke, Reiner Mueller, Thomas Arndt, Goerg Michler, Joachim Laatsch
  • Patent number: 7011963
    Abstract: The invention relates to a process for synthesis, by inverse bead polymerization of a monomer phase, of a bead-like, cross-linked, hydrophilic copolymer which has binding activity toward ligands containing nucleophilic groups. The invention relates to support polymer materials with high binding capacity for penicillin acylase and low swelling factor, as well as to use of the same.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: March 14, 2006
    Assignee: Roehm GmbH & Co KG
    Inventors: Christian Meier, Thomas Suefke, Hans-Ulrich Petereit, Roger Recktenwald, Thomas Boller
  • Publication number: 20060052515
    Abstract: The present invention relates to a process for preparing an aqueous dispersion, by a) forming an initial charge from water and emulsifier, b) adding from 25.0 to 45.0 parts by weight of a first composition comprising A) from 50.0 to 99.9 parts by weight of alkyl methacrylates, B) from 0.0 to 40.0 parts by weight of alkyl acrylates, C) from 0.1 to 10.0 parts by weight of crosslinking monomers and D) from 0.0 to 8.0 parts by weight of styrenic monomers and polymerizing, c) adding from 35.0 to 55.0 parts by weight of a second composition comprising E) from 80.0 to 100.0 parts by weight of (meth) acrylates F) from 0.05 to 10.0 parts by weight of crosslinking monomers and G) from 0.0 to 20.0 parts by weight of styrenic monomers, and polymerizing, d) adding from 10.0 to 30.0 parts by weight of a third composition comprising H) from 50.0 to 100.0 parts by weight of alkyl methacrylates, I) from 0.0 to 40.0 parts by weight of alkyl acrylates and J) from 0.0 to 10.
    Type: Application
    Filed: October 18, 2003
    Publication date: March 9, 2006
    Applicant: Roehm Gmbh & Co. KG
    Inventors: Klaus Schultes, Thomas Suefke, Reiner Mueller, Hartmut Schikowsky, Werner Hoess
  • Patent number: 6998140
    Abstract: The invention relates to a dispersion suitable for use as coating agent and binder for pharmaceutical forms, having a solids content of 10–70% by weight consisting of a) from 90 to 99% by weight of a methacrylate copolymer consisting of at least 90% by weight of (meth)acrylate monomers containing neutral radicals and having a glass transition temperature Tg of from ?20° C. to +20° C. as determined by the DSC method, and b) 1–10% by weight of a nonionic emulsifier having an HLB of from 15.2 to 17.3.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: February 14, 2006
    Assignee: Roehm GmbH & Co. KG
    Inventors: Christian Meier, Johanna Eisele, Michael Schnabel, Klaus Schultes, Stefan Grimm, Hans-Ulrich Petereit, Thomas Suefke
  • Publication number: 20050079216
    Abstract: The invention relates to a method for producing a pharmaceutical dosage form as tablets, pellets and/or in the form of an active ingredient-containing matrix, whereby the tablets, pellets and/or active ingredient-containing matrix contain a pharmaceutical active ingredient and a copolymer serving as a coating agent and/or binding agent, and optionally contain a core and pharmaceutically common additives. According to the invention, the copolymer, the pharmaceutical active ingredient, the optionally present core and/or the pharmaceutically common additives are processed using known techniques by melting, injection molding, extrusion, wet granulation, casting, dipping, spreading out, spraying on, or pressing to form tablets, pellets and/or an active ingredient-containing matrix. The inventive method is characterized in that a copolymer is used that consists of 20 to 34 wt. % methacrylic acid, 20 to 69 wt. % methylacrylate and 0 to 40 wt. % ethylacrylate and, optionally, of 0 to 10 wt.
    Type: Application
    Filed: January 30, 2003
    Publication date: April 14, 2005
    Applicant: Roehm GMBH & CO. KG
    Inventors: Hans-Ulrich Petereit, Thomas Suefke, Christian Meier, Michael Schnabel, Ingrid Blesing, Stefan Grimm
  • Publication number: 20050065224
    Abstract: The invention relates to a macroporous plastics bead material with an average particle diameter from 10 to 1000 ?m, containing a copolymer of a) 5-60 wt. % vinylically polymerizable monomers with a water solubility of at least 1% at 20° C., b) 1-40 wt. % vinylically polymerizable monomers with an additional functional group, which can enter into covalent bonds with the nucleophilic groups of the ligands in a polymer-like reaction, c) 10-40 wt. % hydrophilic, crosslinking radical-polymerizable monomers with two or more ethylenically unsaturated polymerizable groups and d) 10-60 wt. % vinylically polymerizable monomers with a water solubility of at most 1% at 20° C. are contained, as a rule with the monomers a) to d) adding up to 100%.
    Type: Application
    Filed: August 25, 2003
    Publication date: March 24, 2005
    Inventors: Stefan Menzler, Hans-Ulrich Petereit, Christian Meier, Thomas Boller, Thomas Suefke, Klaus Schultes, Roger Recktenwald
  • Publication number: 20040241753
    Abstract: The invention relates to a process for synthesis, by inverse bead polymerization of a monomer phase, of a bead-like, cross-linked, hydrophilic copolymer which has binding activity toward ligands containing nucleophilic groups. The invention relates to support polymer materials with high binding capacity for penicillin acylase and low swelling factor, as well as to use of the same.
    Type: Application
    Filed: June 30, 2004
    Publication date: December 2, 2004
    Applicant: ROEHM GBMH & CO. KG
    Inventors: Christian Meier, Thomas Suefke, Hans-Ulrich Petereit, Roger Recktenwald, Thomas Boller
  • Patent number: 6809163
    Abstract: The present invention provides a process for preparing bead polymers having an average particle size of 1 to 40 &mgr;m, which includes: contacting: at least one polymerizable mix which includes at least 50% by weight of at least one (meth)acrylate monomer, at least one aluminum compound, and an aqueous phase, to prepare a mixture; dispersing the mixture at a shear rate≧103 s−1 to form a dispersion, wherein the dispersion is stabilized by the aluminum compound; and polymerizing to produce bead polymers having an average particle size of 1 to 40 &mgr;m.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: October 26, 2004
    Assignee: Roehm GmbH & Co KG
    Inventors: Klaus Schultes, Thomas Suefke, Markus Parusel, Guenter Schmitt, Winfried Belzner
  • Patent number: 6803416
    Abstract: The present invention provides a moulding composition, which includes: a plurality of bead polymers dispersed in at least one matrix polymer; wherein the bead polymers: have an average particle size of 5 to 40 &mgr;m, and have a refractive index nD at 20° C. which is different from a refractive index nD at 20° C. of said matrix polymer; and wherein the bead polymers are prepared by a process, which includes: contacting: at least one polymerizable mix which includes at least 50% by weight of at least one (meth)acrylate monomer, at least one aluminum compound, and an aqueous phase, to prepare a mixture; dispersing the mixture at a shear rate ≧103 s−1 to form a dispersion, wherein the dispersion is stabilized by the aluminum compound; and polymerizing to produce the bead polymers having an average particle size of 5 to 40 &mgr;m.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: October 12, 2004
    Assignee: Roehm GmbH & Co. KG
    Inventors: Klaus Schultes, Thomas Suefke, Markus Parusel, Werner Hoess
  • Publication number: 20040030046
    Abstract: The invention relates to a novel impact-resistance modifier, constructed from a core-shell 1 and a shell 2, whereby the core is plastically deformable. The invention is characterised by excellent mechanical properties obtained by a low content of impact-resistance modifier.
    Type: Application
    Filed: August 18, 2003
    Publication date: February 12, 2004
    Inventors: Klaus Schultes, Thomas Suefke, Reiner Mueller, Thomas Arndt, Goerg Michler, Joachim Laatsch
  • Publication number: 20030060381
    Abstract: The invention relates to a dispersion suitable for use as coating agent and binder for pharmaceutical forms, having a solids content of 10-70% by weight consisting of
    Type: Application
    Filed: November 9, 2001
    Publication date: March 27, 2003
    Inventors: Christian Meier, Johanna Eisele, Michael Schnabel, Klaus Schultes, Stefan Grimm, Hans-Ulrich Petereit, Thomas Suefke
  • Publication number: 20020123565
    Abstract: The present invention provides a moulding composition, which includes:
    Type: Application
    Filed: December 28, 2001
    Publication date: September 5, 2002
    Applicant: ROEHM GMBH & CO. KG
    Inventors: Klaus Schultes, Thomas Suefke, Markus Parusel, Werner Hoess
  • Publication number: 20020123563
    Abstract: The present invention provides a process for preparing bead polymers having an average particle size of 1 to 40 &mgr;m, which includes:
    Type: Application
    Filed: December 28, 2001
    Publication date: September 5, 2002
    Applicant: ROEHM GMBH & CO. KG
    Inventors: Klaus Schultes, Thomas Suefke, Markus Parusel, Guenter Schmitt, Winfried Belzner
  • Patent number: 6288190
    Abstract: The invention relates to reactive polysols with a reactive monomer portion which is polymerized during thermal coating. The polysols exhibit good mechanical properties. A monofunctional (meth)acrylate monomer of formula (1) is used as reactive monomer component.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: September 11, 2001
    Assignee: Roehm GmbH
    Inventors: Volker Kerscher, Thomas Suefke