Patents by Inventor Karl-Heinz Ott

Karl-Heinz Ott 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: 5374716
    Abstract: A process for the production of surface-active alkyl glycosides which is carried out by the transacetalization method with butanol, leads to a new alkyl glycoside as end product which is characterized by high color-stability in alkaline medium; besides a high proportion of alkyl monoglycoside, the product also contains polyglycoside on polyglycose and butyl glucoside.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: December 20, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Manfred Biermann, Karlheinz Hill, Willi Wuest, Rainer Eskuchen, Josef Wollmann, Andreas Bruns, Guenter Hellmann, Karl-Heinz Ott, Walter Winkle, Klaus Wollmann
  • Patent number: 5362810
    Abstract: Thermoplastic molding compositions of A) 70 to 99.5% by weight of a thermoplastic aromatic polyether sulfone or mixtures of several thermoplastic polyether sulfones and B) 30 to 0.5% by weight of a hydrogenated nitrile rubber.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: November 8, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Hartmuth Buding, Thomas Eckel, Karl-Heinz Ott
  • Patent number: 5314990
    Abstract: A process for the continuous processing of vinyl polymer latices to produce thermoplastically processible vinyl polymer powder by coagulating a stream of a vinyl polymer latex by the addition of a stream of a coagulant with intensive mixing and shearing in a cascade of vessels at an average residence time per vessel of 10 to 60 minutes and at temperatures from 50 to 120.degree. C., volatile auxiliary substances and residual monomers in the polymer being optionally removed by steam distillation and part of the serum separated from the vinyl polymer being added to the stream of coagulant.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: May 24, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Ulrich Jansen, Karl-Heinz Ott, Wolfgang Herrig, Otto Koch, Alfred Pischtschan, Dieter Wittmann
  • Patent number: 5302663
    Abstract: Thermoplastic molding compounds comprising three resin components with different molecular weights and two graft rubbers. The thermoplastic molding compounds have high toughness, adequate heat resistance, adjustable surface gloss and excellent thermoplastic processability. The invention also relates to a process for the production of the molding compounds.
    Type: Grant
    Filed: June 1, 1993
    Date of Patent: April 12, 1994
    Assignee: Bayer AG
    Inventors: Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan
  • Patent number: 5302664
    Abstract: Thermoplastic molding compounds comprising three resin components with different molecular weights and two graft rubbers. The thermoplastic molding compounds have good toughness, high heat resistance, adjustable surface gloss and good thermoplastic processability. The invention also relates to a process for the production of the molding compounds.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: April 12, 1994
    Assignee: Bayer AG
    Inventors: Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan
  • Patent number: 5300550
    Abstract: A thermoplastic molding composition is disclosed comprising(i) a thermoplastic resin(ii) a low molecular weight additive, and(iii) a specially prepared carrier material magnesium-aluminum-silicate.The carrier material which is characterized by its particle size and low bulk density was found to be effective in minimizing the thermal processing-related evaporation of the low molecular additive.
    Type: Grant
    Filed: February 23, 1993
    Date of Patent: April 5, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Eckel, Dieter Wittmann, Karl-Heinz Ott, Claus H. Wulff, Dieter Freitag
  • Patent number: 5272193
    Abstract: Thermoplastic polycarbonate moulding compounds containing 40 to 90 parts by weight of a thermoplastic aromatic polycarbonate; 0 to 80 parts by weight of a copolymer or polycondensate consisting of 0 to 50 parts by weight of a thermoplastic copolymer of 50 to 95% by weight of styrene, .alpha.-methylstyrene, styrene alkylated in the nucleus, halogenated styrene or mixtures thereof and 5 to 50% by weight of acrylonitrile, methacrylonitrile, alkyl acrylate, alkyl methacrylate, maleic acid anhydride, N-substituted maleiimide, vinyl acetate or mixtures thereof and/or 0 to 80 parts by weight of a thermoplastic polyalkylene terephthalate; 1 to 25 parts by weight of graft polymer prepared from 5 to 90 parts by weight of a mixture of: 50 to 95% by weight of styrene, .alpha.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: December 21, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott
  • Patent number: 5248727
    Abstract: Thermoplastic molding compositions of a vinyl chloride polymer and one or more emulsion polymers made with special emulsifiers have improved properties for technical application, such as reduced fogging. They are used for the production of molded articles, sheet products and films.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: September 28, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Adolf Schmidt, Herbert Eichenauer, Karl-Erwin Piejko, Karl-Heinz Ott
  • Patent number: 5240978
    Abstract: A flame resistant molding composition containing a polycarbonate resin, a graft polymer and, as a flame retarding agent a phosphoric acid ester of novolak in combination with an anti drip agent is disclosed. The composition may further contain a thermoplastic copolymer and/or polyalkylene terephthalate. A process for the preparation of the composition is also disclosed.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: August 31, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott, Jochen Schoeps, Horst Peters, Werner Ballas
  • Patent number: 5225465
    Abstract: A process for processing polymers of the ABS type present in emulsion form and effectively stabilized against oxidative attack with optionally continuous recovery and direct reuse of untreated monomers, wherein a combination of at least one phenolic antioxidant having a molecular weight above 300 without ester groups in the molecule and at least one sulfur-containing co-stabilizer having a molecular weight above 500 without ester groups in the molecule is added to the ABS polymer emulsion for stabilization against oxidative degradation.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: July 6, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Ulrich Jansen, Ralph Ostarek, Otto Koch, Karl-Heinz Ott
  • Patent number: 5223572
    Abstract: Thermoplastic moulding compounds based on fully aromatic polyester carbonates polyalkylene terephthalates and grafted diene rubber have a well balanced combination of notched impact strength at room temperature and low temperatures and high weld line strength and may be used for the production of moulded articles, in particular by injection moulding.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: June 29, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Eckel, Dieter Wittmann, Jochen Schoeps, Horst Peters, Karl-Heinz Ott
  • Patent number: 5210135
    Abstract: Thermoplastic molding compounds, containingA) 5-95 weight % of a thermoplastic homo-, co- or terpolymer of styrene, alpha-methylstyrene, ring-substituted styrene, methyl methacrylate, acrylonitrile, methacrylonitrile, maleic anhydride, N-substituted maleimide, vinyl acetate or mixtures thereof,B) 5-95 weight % of a graft polymer ofB.1) 5-90 parts by weight of styrene, alpha-methylstyrene, ring-substituted styrene, methyl methacrylate, acrylonitrile, methacrylonitrile, maleic anhydride, N-substituted maleimide, vinyl acetate or mixtures thereof onB.2) 95-10 parts by weight of a rubber with a glass transition temperature .ltoreq.10.degree. C. andC) 0.1-5 parts by weight per 100 parts by weight A+B of a grafted product of resin-forming monomers on an ethylene-propylene-diene terpolymer rubber with a rubber content of 20-60 weight %.
    Type: Grant
    Filed: August 26, 1992
    Date of Patent: May 11, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Alfred Pischtschan, Karl-Heinz Ott
  • Patent number: 5200491
    Abstract: This invention relates to a process for standardized preparation of thermoplastic polyurethane elastomers by deactivating metal traces during the reaction, at an NCO:OH ratio of between about 0.85 and about 1.2:1, of(a) substantially linear hydroxyl-terminated polyols;(b) organic diisocyanates;(c) optional diol chain extenders; and(d) optional catalysts or other auxiliaries and/or additives, in the presence of(e) 0.000001 to 0.3% by weight, based on the total weight of the other components, of certain phosphorus compounds, wherein the phosphorus compounds are added to one or more of the other components before or during preparation of the thermoplastic polyurethane elastomers.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: April 6, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wolfgang Brauer, Friedemann Muller, Karl-Heinz Ott
  • Patent number: 5191017
    Abstract: The invention relates to high-impact polyether sulfone molding compositions containing aromatic polyether sulfones, diene graft polymers and, optionally, other thermoplastic resins, at most half the aromatic polyether sulfone being replaceable by other thermoplastic resins.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: March 2, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Eckel, Dieter Wittmann, Karl-Heinz Ott, Christian Lindner
  • Patent number: 5191000
    Abstract: The flameproofed, non-dripping polyalkylene terephthalate molding compounds according to the invention based on phosphoric acid esters may be used for the production of moldings. The fire behavior of the polyalkylene terephthalate molding compounds is improved by the addition of certain phosphoric acid esters, a surprising reduction in the phosphorus content of the molding compounds being achieved at the same time, particularly in combination with highly heat-resistant thermoplastics.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: March 2, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott
  • Patent number: 5171786
    Abstract: The invention relates to thermoplastic PVC molding compounds containing specially synthesized silicone graft rubbers. These thermoplastic molding compounds show an excellent combination of properties such as impact strength at room temperature, impact strength at low temperatures and particularly high resistance to ageing under the effect of light, moisture and heat.
    Type: Grant
    Filed: June 23, 1989
    Date of Patent: December 15, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Volker Damrath, Karl-Erwin Piejko, Karl-Heinz Ott
  • Patent number: 5157065
    Abstract: Thermoplastic molding compositions containing thermoplastic, aromatic polycarbonates, graft polymers, special phosphorus compounds, antidripping agents and optionally other thermoplasts as well as conventional additives are disclosed. The compositions are characterized by their flame resistance and mechanical properties. Also disclosed is a process for the preparation of the molding compositions.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: October 20, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott
  • Patent number: 5153291
    Abstract: Trialkylsilyloxy-1,1-diphenyl ethylenes corresponding to general formula I, new polymers produced therewith terminated by aryl trialkylsilyl ether groups or by phenolic hydroxyl groups and a process for the production of these polymers by anionic polymerization ##STR1## in which R.sup.1, R.sup.2 .dbd.H, C.sub.1 -C.sub.4 alkyl, OCH.sub.3,R.sup.3 .dbd.H, C.sub.1 -C.sub.4 alkyl, O--C.sub.1 -C.sub.4 alkyl,R.sup.4 .dbd.H, C.sub.1 -C.sub.4 alkyl,R.sup.5 .dbd.C.sub.1 -C.sub.4 alkyl,R.sup.6 .dbd.H, C.sub.1 -C.sub.4 alkyl.
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: October 6, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Edgar Leitz, Hans-Josef Buysch, Ludwig Bottenbruch, Karl-Heinz Ott
  • Patent number: 5137953
    Abstract: The invention relates to thermoplastic molding compounds containing thermoplastic aromatic polycarbonates, thermoplastic copolymers, optionally graft polymers and/or tetrafluoroethylene polymers and/or silicone resins, characterized in that they contain phosphorus compounds corresponding to formula (I) ##STR1## in which R is a --CH.sub.2 --, ##STR2## group and the aromatic radicals may even be alkyl-substituted.
    Type: Grant
    Filed: December 4, 1990
    Date of Patent: August 11, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott, Jochen Schoeps, Horst Peters, Werner Ballas
  • Patent number: 5137970
    Abstract: A molding composition comprising a mixture of an aromatic polycarbonate based on a substituted dihydroxy diphenylcyclohexane, a copolymer of a resin forming vinyl monomer and a graft polymer of a resin forming monomer onto a diene rubber, and a process for its manufacture and use for making heat resistant shaped articles are disclosed.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: August 11, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Eckel, Dieter Wittmann, Dieter Freitag, Uwe Westeppe, Karl-Heinz Ott