Patents by Inventor Wolfgang Janas

Wolfgang Janas 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: 20140194585
    Abstract: The invention relates to the synthesis of (meth)acrylate-based mass polymers which are soluble in aqueous alkaline. The invention in particular relates to the synthesis of polymers by means of a mass polymerization. Said mass polymers have a significantly improved solubility in aqueous alkaline media over corresponding polymers produced by means of a heterogeneous aqueous polymerization method, such as emulsion or suspension polymerization. Improved solubility in said context refers to the dissolution rate being faster among particles of equal size, to no significant turbidity remaining after dissolution and to the viscosity of the obtained solutions being lower at the identical ratio of solids content. Furthermore, the compatibility of the compounds according to the invention with water-based varnishes is at least comparable or even improved.
    Type: Application
    Filed: March 11, 2014
    Publication date: July 10, 2014
    Applicant: Evonik Roehm GmbH
    Inventors: Dirk POPPE, Wolfgang Janas, Frank Kleinsteinberg, Anja Christofzik
  • Publication number: 20120157613
    Abstract: The invention relates to the synthesis of (meth)acrylate-based mass polymers which are soluble in aqueous alkaline. The invention in particular relates to the synthesis of polymers by means of a mass polymerization. Said mass polymers have a significantly improved solubility in aqueous alkaline media over corresponding polymers produced by means of a heterogeneous aqueous polymerization method, such as emulsion or suspension polymerization. Improved solubility in said context refers to the dissolution rate being faster among particles of equal size, to no significant turbidity remaining after dissolution and to the viscosity of the obtained solutions being lower at the identical ratio of solids content. Furthermore, the compatibility of the compounds according to the invention with water-based varnishes is at least comparable or even improved.
    Type: Application
    Filed: October 7, 2010
    Publication date: June 21, 2012
    Applicant: EVONIK ROEHM GmbH
    Inventors: Dirk Poppe, Wolfgang Janas, Frank Kleinsteinberg, Anja Christofzik
  • Patent number: 6740404
    Abstract: HMLS filaments consisting of a polyester, from 0.1 to 2.5% by weight of an incompatible, thermoplastic, amorphous, polymeric additive having a glass transition temperature of from 90 to 170° C. and a ratio of its melt viscosity to that of the polyester component of from 1:1 to 7:1, and from 0 to 5.0% by weight of conventional additives, where the polymeric additive is present in the filaments in the form of fibrils having a mean diameter of ≦80 nm. Process for the production of these HMLS filaments by static mixing with shearing of the polyester and of the polymeric additive and, optionally, of the additives, spinning of the mixture at a spinning take-off speed of from 2500 to 4000 m/min to give spun filaments which are stretched, heat-set and wound up, where the concentration of the polymeric additive is determined as a function of the pre-specified spinning take-off speed and the desired birefringence of the spun filaments.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: May 25, 2004
    Assignee: Zimmer AG
    Inventors: Joachim Cziollek, Werner Mrose, Dietmar Wandel, Helmut Schwind, Wolfgang Janas, Werner Ude
  • Publication number: 20040096655
    Abstract: The present invention relates to a method for the manufacture of synthetic fibers from a melt mixture of fiber forming matrix polymers, wherein at least one second amorphous additive polymer, which is immiscible with the fiber forming matrix polymer, is added to the fiber forming matrix polymers in a quantity of 0.05-5 wt % (with reference to the total weight of fiber forming matrix polymer and the additive copolymer). The additive polymer is obtained by multiple initiation. Furthermore, the present invention also relates to the synthetic fibers produced by the method.
    Type: Application
    Filed: November 10, 2003
    Publication date: May 20, 2004
    Applicant: Zimmer AG
    Inventors: Helmut Schwind, Werner Ude, Wolfgang Janas, Alexander Klein, Bernd Kretschmann
  • Patent number: 6667003
    Abstract: The present invention relates to a method for the manufacture of synthetic fibers from a melt mixture of fiber forming matrix polymers, wherein at least one second amorphous additive polymer, which is immiscible with the fiber forming matrix polymer, is added to the fiber forming matrix polymers in a quantity of 0.05-5 wt % (with reference to the total weight of fiber forming matrix polymer and the additive copolymer). The additive polymer is obtained by multiple initiation. Furthermore, the present invention also relates to the synthetic fibers produced by the method.
    Type: Grant
    Filed: May 10, 2001
    Date of Patent: December 23, 2003
    Assignee: Zimmer A.G.
    Inventors: Helmut Schwind, Werner Ude, Wolfgang Janas, Alexander Klein, Bernd Kretschmann
  • Patent number: 6656583
    Abstract: High strength polyester fibers comprising from 0.1 to 2.0 by weight of an incompatible, thermoplastic amorphous, polymeric additive.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: December 2, 2003
    Assignee: Lurgi Zimmer AG
    Inventors: Joachim Cziollek, Werner Mrose, Dietmar Wandel, Helmut Schwind, Wolfgang Janas, Werner Ude
  • Patent number: 6576339
    Abstract: Polyester staple fibres consisting of a polyester, from 0.1 to 2.0% by weight of an incompatible, thermoplastic, amorphous, polymeric additive having a glass transition temperature of from 90 to 170° C. and a ratio of its melt viscosity to that of the polyester component of from 1:1 to 10:1, and from 0 to 5.0% by weight of conventional additives, where the polymeric additive is present in the staple fibres in the form of fibrils having a mean diameter of ≦80 nm. Process for the production of these staple fibres by mixing with shearing of the polyester and of the polymeric additive and, optionally, of the conventional additives, spinning at a spinning take-off speed of <2500 m/min to give spun filaments, which are combined to form tows and stretched in a separate fibre stretching stage, crimped, dried and chopped to give staple fibres.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: June 10, 2003
    Assignee: Lurgi Zimmer AG
    Inventors: Ingo Cordes, Dietmar Wandel, Helmut Schwind, Wolfgang Janas, Werner Ude
  • Publication number: 20020017735
    Abstract: The present invention relates to a method for the manufacture of synthetic fibers from a melt mixture of fiber forming matrix polymers, wherein at least one second amorphous additive polymer, which is immiscible with the fiber forming matrix polymer, is added to the fiber forming matrix polymers in a quantity of 0.05-5 wt % (with reference to the total weight of fiber forming matrix polymer and the additive copolymer). The additive polymer is obtained by multiple initiation. Furthermore, the present invention also relates to the synthetic fibers produced by the method.
    Type: Application
    Filed: May 10, 2001
    Publication date: February 14, 2002
    Inventors: Helmut Schwind, Werner Ude, Wolfgang Janas, Alexander Klein, Bernd Kretschmann
  • Patent number: 5962131
    Abstract: Process for the production of preoriented filaments from polyester-based polymer mixtures by spinning the polymer mixtures with a draw-off speed v of at least 2500 m/min, a second amorphous, thermoplastically processable copolymer having a glass transition temperature of more than 100.degree. C. being added to the polyester, wherein the ratio of the melt viscosity of the copolymer to the melt viscosity of the polyester is 1:1 to 10:1, in that the amount of copolymer added to the polyester is at least 0.05 wt.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: October 5, 1999
    Assignee: Degussa Aktiengesellschaft
    Inventors: Helmut Schwind, Wolfgang Janas, Klaus Dorn, Peter Kempf, Dietmar Wandel, Joachim Cziollek, Ulrich Thiele, Alexander Klein, Heinz-Dieter Schumann