Patents by Inventor Josef Buekers

Josef Buekers 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: 5623026
    Abstract: Siloxanes containing epoxy groups having the formula 1 ##STR1## Formula 1 whereinA means a C.sub.1 -C.sub.20 alkyl radical with epoxy groupsB means R.sup.1 or AR.sup.1, R.sup.2 independently of each other, means C.sub.1 -C.sub.20 alkyl or C.sub.6 -C.sub.10 aryla means zero or a whole number from 1-100b means zero or a whole number from 1-100c means a whole number from 1-5.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: April 22, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Josef Buekers, Peter Bier, Sabine Schlitte, Hubertus Eversheim, Helmut-Martin Meier
  • Patent number: 5270385
    Abstract: Thermoplastic moulding compounds of 99.8-95% by weight of a mixture consisting of an aromatic polycarbonate, a graft polymer and optionally a thermoplastic vinyl polymer and/or the usual additives and 0.2 to 5% by weight of a polyalkylene ether which has been grafted with a polymer of C.sub.1 -C.sub.6 alkyl(meth)acrylates, cyclo-alkylacrylates or -methacrylates and optionally styrene or .alpha.-methylstyrene.
    Type: Grant
    Filed: June 8, 1992
    Date of Patent: December 14, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Norbert Schon, Herbert Eichenauer, Hans-Jurgen Kress, Josef Buekers
  • Patent number: 5254624
    Abstract: The invention relates to compatible blends of 94 to 10% by weight aromatic poly(ester) carbonates or polycarbonates, 5 to 70% by weight polyamides and 1 to 20% by weight ester-functional (meth)acrylate polymers and, optionally, elastomers in typical modifying quantities, to a process for the production of these blends and to their use for the production of moldings.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: October 19, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Georg Heger, Erwin Piejko, Josef Buekers, Leo Morbitzer, Alexander Karbach
  • Patent number: 5219934
    Abstract: The invention relates to compatible blends having good surfaces of aromatic polycarbonates or poly(ester) carbonates and polyamides and, optionally, graft polymers and typical additives with addition of polymers containing sulfonamide units as compatibilizers, to a process for the production of these blends and to their use for the production of moldings having good surface properties.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: June 15, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Georg Heger, Holger Lutjens, Gerd Fengler, Karl-Erwin Piejko, Josef Buekers
  • Patent number: 5061745
    Abstract: The invention relates to polycarbonate molding compounds consisting of halogen-free polycarbonates, graft polymers, phosphorus compounds, tetrafluoroethylene polymers and, optionally, copolymers and/or, optionally, other additives known per se and a process for their production.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: October 29, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dieter Wittmann, Horst Peters, Jochen Schoeps, Hans-Jurgen Kress, Josef Buekers, Karl-Heinz Ott
  • Patent number: 5030675
    Abstract: Flame-resistant molding compounds of polycarbonate, polyalkylene terephthalate, graft polymer, fluorinated polyolefine and phosphorus compound can be worked up into moulded products which have a particularly advantageous combination of joint line strength, dimensional stability under heat and toughness.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: July 9, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dieter Wittmann, Hans-Jurgen Kress, Horst Peters, Josef Buekers, Christian Lindner
  • Patent number: 4925891
    Abstract: The present invention relates to high impact strength flame-retardant polycarbonate moulding compositions, which are characterized in that they consist of halogen-free polydiorganosiloxane-polycarbonate block copolymers, halogen-free copolymers, halogen-free phosphorus compounds, tetrafluoroethylene polymers and, if appropriate, stabilizers, pigments, flow control agents, mould release agents and/or antistatics, and to processes for their preparation.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: May 15, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Kress, Christian Lindner, Friedemann Muller, Horst Peters, Dieter Wittmann, Josef Buekers
  • Patent number: 4920166
    Abstract: The invention relates to flame-resistant mixtures of polycarbonates with graft polymers and copolymers which are characterized in that they contain modified polyalkylene ethers as antistatic agent.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: April 24, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Norbert Schon, Hans-Jurgen Kress, Herbert Eichenauer, Josef Buekers
  • Patent number: 4883835
    Abstract: This invention relates to mixtures of polycarbonates with graft polymers and copolymers which have been rendered flame resistant and which are characterized by containing modified polyalkylene ethers as antistatic agents.
    Type: Grant
    Filed: March 31, 1988
    Date of Patent: November 28, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Norbert Schon, Hans-Jurgen Kress, Herbert Eichenauer, Josef Buekers
  • Patent number: 4879342
    Abstract: The present invention relates to thermoplastic moulding compositions comprising polydiorganosiloxanepolycarbonate block copolymers, copolymers of styrene and maleic anhydrides, graft polymers and, where appropriate, further customary additives and a process for preparing these moulding compositions.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: November 7, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Kress, Winfried Paul, Horst Peters, Christian Lindner, Josef Buekers
  • Patent number: 4861829
    Abstract: The present invention relates to thermoplastic moulding materials from polydiorganosiloxane-polycarbonate block copolymers and copolymers from styrenes and maleic anhydride and, if appropriate, further conventional additives, and also a process for the preparation of these moulding materials.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: August 29, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Kress, Winfried Paul, Horst Peters, Christian Lindner, Josef Buekers
  • Patent number: 4839421
    Abstract: Thermoplastic moulding compounds consisting of 99.8-95% by weight of a mixture consisting of an aromatic polycarbonate, a graft polymer and optionally a thermoplastic vinyl polymer and/or the usual additives and 0.2 to 5% by weight of a polyalkylene ether which has been modified by a radical former.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: June 13, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Norbert Schon, Herbert Eichenauer, Hans-Jurgen Kress, Josef Buekers
  • Patent number: 4810739
    Abstract: Flame resistant thermoplastic moulding compositions consisting of(a) from 5 to 85 parts, by weight, of an aromatic polycarbonate,(b) from 15 to 95 parts, by weight, of a SAN-graft polymer,(c) from 0 to 50 parts, by weight, of a thermoplastic polymer,(d) optionally from 3 to 15 parts, by weight, (per 100 parts by weight of (a)+(b)+(c) of an organic, low molecular weight, oligomeric or polymeric halogen compound,(e) from 0.05 to 5 parts, by weight, (per 100 parts by weight of (a)+(b)+(c)) of antimony trioxide, antimony carbonate, bismuth trioxide or bismuth carbonate, and(f) from 0.05 to 0.5 parts, by weight, based on 100 parts, by weight, of the sum of (a)-(f), of finely-divided tetrafluoroethylene polumer having a fluorine content of from 65 to 76%, by weight, and a process for the production thereof.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: March 7, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Horst Peters, Josef Buekers, Bernd Urbanneck
  • Patent number: 4788238
    Abstract: The present invention provides thermoplastic flame-retardant moulding compositions containing halogen-containing copolycarbonates, styrene/maleic anhydride copolymers, phosphorus compounds of the formula (I) ##STR1## and tetrafluoroethylene polymers and, if desired, further known additives.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: November 29, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gert Todtemann, Klaus Reinking, Otto Koch, Kress Hans-Jurgen, Lindner Christian, Friedemann Muller, Horst Peters, Josef Buekers
  • Patent number: 4777212
    Abstract: The present invention relates to thermoplastic moulding compositions comprising polydiorganosiloxane-polycarbonate block copolymers, copolymers of styrene and maleic anhydrides, graft polymers and, where appropriate, further customary additives and a process for preparing these moulding compositions.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: October 11, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Kress, Winfried Paul, Horst Peters, Christian Lindner, Josef Buekers
  • Patent number: 4766165
    Abstract: The present invention relates to flame-retarding moulding compositions which are based on thermoplastic polycarbonates, copolymers of styrenes and maleic anhydride, phosphorus compounds of the formula (I) ##STR1## tetrafluoroethylene polymers, small amounts of graft polymers and optionally halogen compounds and which in addition can contain stabilizers, pigments, flow agents, release agents and/or antistatics, and to a process for their preparation.
    Type: Grant
    Filed: June 5, 1986
    Date of Patent: August 23, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Kress, Friedemann Muller, Christian Lindner, Horst Peters, Josef Buekers, Gert Todtemann
  • Patent number: 4751260
    Abstract: The present invention relates to flame-retarding, thermoplastic polycarbonate moulding materials of high impact strength consisting of halogen-containing polycarbonates, copolymers formed from styrenes and (meth)acrylonitrile, phosphorus compounds of the formula (I) ##STR1## tetrafluoroethylene polymers and small amounts of graft polymers and, if appropriate, effective amounts of stabilizers, pigments, lubricants, mould release agents and/or antistatic agents, and to a process for the preparation thereof.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: June 14, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Kress, Friedemann Muller, Christian Lindner, Horst Peters, Josef Buekers
  • Patent number: 4692488
    Abstract: The present invention relates to high-impact, flame-repellant thermoplastic polycarbonate moulding compositions consisting of halogen-free polycarbonates, halogen-free copolymers of styrenes and (meth)acrylonitrile, halogen-free phosphorus compounds of the formula (I) ##STR1## tetrafluoroethylene polymers and small amounts of graft polymers and, if appropriate, effective amounts of stabilizers, pigments, flow control agents, mould release agents and/or antistatics, and a process for their preparation.
    Type: Grant
    Filed: June 18, 1986
    Date of Patent: September 8, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Kress, Friedemann Muller, Christian Lindner, Horst Peters, Josef Buekers
  • Patent number: 4622363
    Abstract: The present invention relates to the use of a copolymer with an Mw of 2.times.10.sup.6 to 1.times.10.sup.7 in amounts of 0.5 to 5 parts by weight for improving the heat distortion point of thermoplastic mixtures containing polycarbonates, graft polymers and copolymers, and the thermoplastic mixtures correspondingly rendered dimensionally stable under the influence of heat.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: November 11, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Hans-Jurgen Kress, Karl-Heinz Ott, Horst Peters, Josef Buekers
  • Patent number: 4563496
    Abstract: This invention relates to self-extinguishing thermoplastic moulding compositions of an aromatic polycarbonate containing a co-condensed halogen, a thermoplastic copolymer containing nucleus-alkylated styrene and an ABS as graft copolymer.
    Type: Grant
    Filed: October 15, 1984
    Date of Patent: January 7, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Friedemann Muller, Horst Peters, Hans-Jurgen Kress, Josef Buekers