Patents by Inventor Werner Nielinger

Werner Nielinger 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).

  • Thermally stable copper-containing polyamide molding compounds
    Patent number: 5965652
    Abstract: The invention relates to thermally stable and UV-stable polyamide molding compounds containing colloidal copper formed in situ and to a process for their production.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: October 12, 1999
    Assignee: Bayer AG
    Inventors: Aziz El Sayed, Edgar Ostlinning, Alban Hennen, Georg Heger, Werner Nielinger, Karsten-Josef Idel, Klaus Sommer, Raymond Audenaert
  • Ternary copolyamide
    Patent number: 5739262
    Abstract: This invention relates to a novel ternary polyamide for the production of monofilaments, films and injection moulded articles.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: April 14, 1998
    Assignee: Bayer AG
    Inventors: Heinrich Morhenn, Dieter Brokmeier, Werner Nielinger
  • Multi-layer films made from copolyamides
    Patent number: 5645945
    Abstract: The invention relates to transparent multi-layer films made from polyamides and polyolefines using copolyamides of .epsilon.-caprolactam together with diamines and dicarboxylic acids.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: July 8, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Helmut Schulte, Bernhard Schulte, Edgar Ostlinning
  • Process for the production of high molecular weight polyamide 6
    Patent number: 5597888
    Abstract: The invention relates to a process for the production of high molecular weight polyamide 6 (polycaprolactam).
    Type: Grant
    Filed: June 9, 1995
    Date of Patent: January 28, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Andreas Gittinger, Edgar Ostlinning, Karsten-Josef Idel, Helmut Schulte
  • Production of blend systems by the condensation of oligocarbonates in the presence of mass-polymerized ABS
    Patent number: 5416161
    Abstract: The present invention relates to a process for producing polymer blends from polycarbonate and mass-polymerized ABS by the condensation of oligocarbonate in the presence of mass-polymerized ABS.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: May 16, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Hermann Kauth, Dieter Wittmann, Dieter Freitag, Karsten-Josef Idel
  • Production of caprolactam by thermal depolymerization of polyamide 6
    Patent number: 5233037
    Abstract: The invention relates to a process for the production of caprolactam by thermal depolymerization of polyamide in the presence of small quantities of potassium carbonate at 250.degree. to 320.degree. C. and to a process for purifying the resulting caprolactam.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: August 3, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Edgar Ostlinning, Karsten-Josef Idel, Dieter Freitag, Hans-Josef Buysch
  • Polyamide moulding compositions containing finely divided polyarylene sulphides
    Patent number: 5115050
    Abstract: The invention relates to a process for the preparation of polyamide moulding compositions containing 0.1 to 40 wt. % of a polyarylene sulphide by reaction of polyamide-forming components in the presence of polyarylene sulphides.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: May 19, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Karsten-Josef Idel, Uwe Westeppe, Dieter Freitag, Claus Wulff, Hans-Detlef Heinz
  • Process for the production of polyamide sheet products
    Patent number: 5013518
    Abstract: This invention relates to a process for the production of shrinkable sheet products from copolyamides with good processing properties. The copolyamides consist of .epsilon.-caprolactam and equimolar quantities of dimeric fatty acids and diamines.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: May 7, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, August Bockmann, Hermann Brinkmeyer, Helmut Schulte
  • Glass-fiber-reinforced stabilized polyamide molding compositions
    Patent number: 4937276
    Abstract: Improved polyamide molding compositions are characterized in that(a) the polyamide essentially contains the polycondensation product of adipic acid, terephthalic acid and hexamethylenediamine,(b) the molding compositions are reinforced with glass fibers and(c) a mixture of copper-, halogen- and phosphorus-containing compounds is present as stabilizer.
    Type: Grant
    Filed: May 9, 1988
    Date of Patent: June 26, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Heinz-Josef Fullmann, Jurgen Kirsch, Ludwig Bottenbruch
  • Flame-proof, glass fibre-reinforced polyamide moulding materials
    Patent number: 4789698
    Abstract: Polyamide moulding materials which have been reinforced with unsized glass fibres and to which a flame-proof finish has been imparted by means of melamine or melamine cyanurate and which have a high glow wire resistance.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: December 6, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinz Bonten, Werner Nielinger, Dietrich Michael, Harald Selbeck, Rolf-Volker Meyer
  • Flame-proof polyamides
    Patent number: 4788259
    Abstract: The invention relates to flame-proof polyamide materials which can be processed by a thermoplastic method and consist of blends of amorphous, partly aromatic polyamides and 3-40% by weight of polyphosphonates.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: November 29, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Hermann Kauth, Heinz-Josef Fullman
  • Process for the preparation of copolyamide from adipic acid, terephthalic acid and hexamethylene diamine
    Patent number: 4762910
    Abstract: Process for the preparation of copolyamides from adipic acid, terephthalic acid and hexamethylene diamine containing 25-48% by weight of units of hexamethylene terephthalamide, by precondensing the monomers at a temperature of at least 250.degree. C. and a pressure of at least 35 bar and completing the polycondensation in the usual manner.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: August 9, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Wolfgang Alewelt, Rudolf Binsack, Ludwig Bottenbruch, Heinz-Josef Fullmann
  • Multistage process for the preparation of poly(tetramethylene-adipamide)
    Patent number: 4719284
    Abstract: Process for the preparation of polyamides from 1,4-diaminobutane and adipic acid, wherein a 40 to 70% strength aqueous solution of the monomers is heated at 280.degree.-320.degree. C., preferably 290.degree.-310.degree. C., for a period of 5 to 30 minutes under a pressure of less than 8 bar, to give a precondensate having a relative viscosity of 1.05 to 2.0, and solid phase after-condensation at 180.degree.-260.degree. C.
    Type: Grant
    Filed: July 16, 1986
    Date of Patent: January 12, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Hermann Brinkmeyer, Rudolf Binsack, Ludwig Bottenbruch, Heinz-Josef Fullmann
  • Process for the production of copolyamide from aromatic dicarboxylic acids, adipic acid and hexamethylene diamine
    Patent number: 4673728
    Abstract: A process for the production of copolyamides from aromatic dicarboxylic acids, adipic acid, and hexamethylene diamine having from 30 to 51.5% by weight of units of the hexamethylene adipic acid amide, the monomers being precondensed at at least 250.degree. C. and under a pressure of at least 35 bars and the polycondensation being conducted in a conventional manner to completion.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: June 16, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Hermann Brinkmeyer, Rudolf Binsack, Ludwig Bottenbruch, Heinz-Josef Fullmann
  • Stabilized red phosphorus and the use thereof for flameproof, thermoplastic polyamide moulding compositions
    Patent number: 4670487
    Abstract: Pulverulent red phosphorus stabilized with zinc fluoride and the use thereof as flame-retarding agent to thermoplastic moulding compositions.
    Type: Grant
    Filed: March 5, 1986
    Date of Patent: June 2, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Dietrich Michael, Heinz-Josef Fullmann, Rudolf Binsack, Harald Selbeck
  • Polyamide stabilized against the effect of light with maleic imide carboxylic acid chloride chain terminator
    Patent number: 4645822
    Abstract: Thermoplastic polyamides with improved stability against reduction in molecular weight due to the effect of light, which have maleic imides as end groups.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: February 24, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Wolfgang Stix, Ludwig Bottenbruch
  • Stabilized red phosphorus and its use for flameproofing thermoplastic polyamide moulding compositions
    Patent number: 4550133
    Abstract: Red phosphorus stabilized with cadmium salts of carboxylic acids is suitable for use as a flameproofing agent for polyamide moulding compositions.
    Type: Grant
    Filed: May 8, 1984
    Date of Patent: October 29, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Karl H. Hermann, Dietrich Michael
  • Fire-resistant polyamide moulding compositions
    Patent number: 4525505
    Abstract: This invention relates to flame-proved polyamide moulding compositions containing a combination of from 10 to 18%, by weight melamine and from 1 to 7% by weight of a thermoplastic polyacetal, in each case based on the moulding composition.
    Type: Grant
    Filed: December 14, 1983
    Date of Patent: June 25, 1985
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinz Bonten, Werner Nielinger, Dietrich Michael, Heinrich Haupt
  • Method of producing polyamide foils
    Patent number: 4472338
    Abstract: A method of producing polyamide foils by extrusion wherein a dispersion of a solid inorganic nucleating agent is added to the polyamide.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: September 18, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl H. Hermann, Helmut Schulte, Werner Nielinger, Dietrich Michael
  • Process for the continuous production of polyamides
    Patent number: 4465821
    Abstract: A process for the production of polyamides by the polycondensation of aqueous solutions of salts of diamines and dicarboxylic acids by continuously introducing the aqueous salt solution into a precondensate melt under atmospheric pressure and simultaneously distilling off the water and maintaining the temperature of the melt at a minimum temperature of 180.degree. C.
    Type: Grant
    Filed: June 15, 1983
    Date of Patent: August 14, 1984
    Assignee: Bayer Aktiengesellschaft
    Inventors: Werner Nielinger, Wolfgang Alewelt, Karl H. Hermann