Patents by Inventor Herbert Eichenauer

Herbert Eichenauer 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: 5714541
    Abstract: Thermoplastics built up from N-(2-ethyl-6-methyl)phenylmaleimide and styrene, it being possible for all or some of the styrene to be replaced by at least one other monomer component.
    Type: Grant
    Filed: September 16, 1996
    Date of Patent: February 3, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Erwin Piejko, Herbert Eichenauer, Torsten Groth, Josef Kasbauer, Bernd-Michael Konig
  • Patent number: 5708079
    Abstract: Thermoplastic moulding compositions containingA) 5 to 95 parts by wt of at least one particle-shaped graft rubber polymer of the ABS type manufactured by emulsion polymerization, in which the graft rubber particles have such a structure detectable by transmission electron microscope photographs, in which the individual particles contain irregular cell-shaped inclusions of resin-forming polymer and the surface of the particles shows such an irregular toothed structure, that for every particle imaged 5 to 30 of such teeth are present, which are distinguished from an idealized round particle (with a diameter d) by a diameter d+d/x with x=3 to 15,B) 95 to 5 parts by wt of at least one particle-shaped graft rubber polymer of the ABS type manufactured by emulsion polymerization, in which the graft rubber particles have such a structure detectable by transmission electron microscope photographs, in which the individual particles do not have a pronounced inner structure as in A) and possess a round particle shape wit
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: January 13, 1998
    Assignee: Bayer AG
    Inventors: Herbert Eichenauer, Edgar Leitz, Karl-Erwin Piejko, Peter Kruger
  • Patent number: 5696204
    Abstract: Thermoplastic moulding compositions comprisingA) 1 to 60 parts by weight of at least one particulate graft rubber polymer of the ABS type which is produced by emulsion polymerisation, in which at least 50% of the graft rubber particles (number) have a structure detectable via transmission electron microscopy photographs in which the individual particles contain irregular cellular inclusions of resin-forming polymer and the surface of the particles has an irregular jagged structure such that 5 to 30 of such peaks are present per depicted particle, which particles differ from an idealised round particle (having a diameter d) by a diameter d+d/x, where x=3 to 15,B) 40 to 99 parts by weight of at least one particulate graft rubber polymer of the ABS type which is produced by solution or bulk polymerisation and which has the morphology which is characteristic of bulk types of ABS, and optionallyC) 0 to 200 parts by weight of at least one thermoplastic, rubber-free resin.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: December 9, 1997
    Assignee: Bayer AG
    Inventors: Herbert Eichenauer, Edgar Leitz, Karl-Erwin Piejko, Heinrich Alberts
  • Patent number: 5679759
    Abstract: Thermoplastic moulding materials containingA. 15 to 80 parts by weight of a thermoplastic polycarbonate or polyester carbonate, andB. 4 to 40 parts by weight of a graft polymer ofB.1 20 to 60 weight % of one or more monomers onB.2 40 to 80 weight % of one or more graft bases having glass transition temperatures <0.degree. C., andC. 16 to 45 parts by weight of a thermoplastic, aromatic vinyl (co)polymer,wherein the graft base B.2 has an average particle size (d.sub.50 value) of 0.20 to 0.35 .mu.m and the weight ratio of components B:C is between 2:1 and 1:4.
    Type: Grant
    Filed: September 20, 1995
    Date of Patent: October 21, 1997
    Assignee: Bayer AG
    Inventors: Dieter Wittmann, Thomas Eckel, Heinrich Alberts, Herbert Eichenauer, Ulrich Jansen
  • Patent number: 5674940
    Abstract: Thermoplastic molding compounds of the ABS type ofA) at least one graft polymer obtainable by emulsion polymerization of styrene and acrylonitrile in a ratio by weight of 90:10 to 50:50, the styrene and/or acrylonitrile being completely or partly replaceable by .alpha.-methyl styrene, methyl methacrylate or N-phenyl maleic imide, in the presence of at least two butadiene polymer latices of type (A) and (B), of which each contains 0 to 50% by weight of another vinyl monomer in copolymerized form, the ratio by weight of the monomers used to the butadiene polymers used being 25:75 to 70:30, andB) at least one copolymer of styrene and acrylonitrile in a ratio by weight of 90:10 to 50:50, the styrene and/or acrylonitrile being completely or partly replaceable by .alpha.-methyl styrene, methyl methacrylate or N-phenyl maleic imide,characterized in that the butadiene polymer latex (A) has a particle diameter d.sub.50 of .ltoreq.250 nm, a width of the particle size distribution (measured as d.sub.90 -d.sub.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: October 7, 1997
    Assignee: Bayer AG
    Inventors: Herbert Eichenauer, Ulrich Jansen, Karl-Erwin Piejko
  • Patent number: 5674939
    Abstract: Moulding compounds the ABS type consisting of at least one resin matrix and a particulate graft-rubber polymer distributed therein and produced by emulsion polymerisation, wherein at least 70% of the graft-rubber particles (number) exhibit a structure of the rubber phase which can be detected by photographs taken with the aid of a transmission electron microscope and in which the individual particles contain irregular cellular inclusions of resin-forming polymer and the surface of the particles exhibits an irregularly jagged structure such that, for each particle illustrated, 5 to 30 of such jagged projections are present which differ from an idealised round particle (with a diameter d) by virtue of a diameter d+d/x with x=3 to 15, as well as a process for the manufacture of said moulding compounds.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: October 7, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Adolf Schmidt, Edgar Leitz, Karl-Erwin Piejko
  • Patent number: 5668218
    Abstract: Elastic-thermoplastic graft polymers manufactured by radical emulsion polymerisation of resin-forming vinyl monomers in the presence of rubber present in latex form with the use of a combination of a peroxide of formula (I) ##STR1## where R.sup.1 signifies alkyl, cycloalkyl and aryl groups with 4 to 20 carbon atoms,X the groups --COOH and --SO.sub.3 H as well as their alkali, alkaline-earth or ammonium salts,n an integer in the range from 1 to 6,A alkylene, cycloalkylene and arylene groups with 6 to 40 carbon atomsand a reducing agent as initiator system, a method for their manufacture and their use as moulding compositions.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: September 16, 1997
    Assignee: Bayer AG
    Inventors: Herbert Eichenauer, Martin Bohnenpoll, Adolf Schmidt, Heinrich Alberts
  • Patent number: 5658985
    Abstract: Thermoplastic molding composition, containing: A) 5-95 weight percent 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 of B.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 on B.2) 95-10 parts by weight of a rubber with a glass transition temperature .ltoreq. 10.degree. C; and C) 0.1-10 parts bye weight per 100 parts by weight of A+B of one or more EPM and/or EPDM rubbers.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: August 19, 1997
    Assignee: Bayer AG
    Inventors: Herbert Eichenauer, Alfred Pischtschan, Karl-Heinz Ott
  • Patent number: 5605963
    Abstract: ABS polymer compositions consisting ofA) 5 to 80 parts by weight of at least one ABS polymer prepared by mass polymerization or solution polymerization, having rubber particles with an average particle diameter of from 800 to 15,000 nm and a rubber content of from 1 to 20% by weight,B) 1 to 50 parts by weight of at least one ABS polymer prepared by emulsion polymerization, having an average particle diameter of from 50 to 500 nm and a rubber content of from 20 to 80% by weight,C) 0 to 70 parts by weight of at least one thermoplastic vinyl resin prepared by radical polymerization of at least two monomer components selected from styrene, .alpha.-methylstyrene, methyl methacrylate, acrylonitrile, N-phenylmaleimide andD) 0.5 to 10 parts by weight of at least one polybutadiene prepared by emulsion polymerization, having an average particle diameter d.sub.50 in the latex form of from 80 to 500 nm and a gel content of from 10 to 95% by weight.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: February 25, 1997
    Assignee: Bayer Aktiengesellschaft
    Inventors: Edgar Leitz, Herbert Eichenauer, Karl-Erwin Piejko, Dieter Wittmann, Ekkehard Frohberg
  • Patent number: 5486583
    Abstract: A mixture which is suitable as a defoamer, especially for ABS latices, comprising (A) a C.sub.10 -C.sub.20 alcohol, (B) a mineral oil, (C) an ester from a thiodicarboxylic acid with 4 to 8 carbon atoms and a C.sub.10 -C.sub.20 alcohol and (D) a non-ionic emulsifier and a process for removing residual monomers from ABS latices using these defoaming mixtures.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: January 23, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Karl-Erwin Piejko, Hans-Jurgen Bunte, Hans-Jurgen Thiem
  • Patent number: 5420181
    Abstract: Thermoplastic molding compositions containingA) ABS-type resin,B) aromatic polycarbonate resins,C) a compound bearing several carboxyl groups or mixtures thereof and optionallyD) further polymer resins,characterized in that an ABS resin with at least one basically acting additive is used as component A, component C is selected from compounds having a molecular weight of from 150 to 260 having at least two carboxyl groups (--COOH) in the molecule, and the weight ratio of basically acting additive in A: carboxyl groups in C is from 5:1 to 1:1.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: May 30, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan, Edgar Leitz, Karl-Erwin Piejko
  • Patent number: 5387647
    Abstract: The invention relates to thermoplastic molding compounds of 70 to 99.5% by weight thermoplastic polyamides and 30 to 0.5% by weight hydrogenated nitrile rubber and 0 to 29.5% by weight thermoplastic resin components and, optionally, standard additives in typical quantities. These thermoplastic molding compounds show high strength values, very good moldability and, above all, high weathering resistance.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: February 7, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Hartmuth Buding, Josef Merten, Karl-Heinz Ott
  • 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: 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: 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: 5274032
    Abstract: Moulding compositions comprisingA) from 5 to 95% by weight of a graft product of a mixture of from 50 to 100 parts by weight of styrene, .alpha.-methylstyrene, vinyl toluene, methyl methacrylate or mixtures thereof and from 0 to 50 parts by weight of acrylonitrile on a particulate silicone rubber having an average particle diameter (d.sub.50) of from 0.10 to 0.50 .mu.m with a total rubber content of from 30 to 90% by weight andB) from 95 to 5% by weight of a graft product of a mixture of from 50 to 100 parts by weight of styrene, .alpha.-methylstyrene, vinyl toluene, methyl methacrylate or mixtures thereof and from 0 to 50 parts by weight of acrylonitrile on a particulate EPDM rubber having an average particle diameter (d.sub.50) of from 0.20 to 1.00 .mu.m with a total rubber content of from 10 to 50% by weight.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: December 28, 1993
    Assignee: Bayer AG
    Inventors: Herbert Eichenauer, Alfred Pischtschan, Christian Lindner
  • Patent number: 5274031
    Abstract: Molding compounds ofA) 5 to 95 parts by weight of a graft product of resin-forming monomers on a particulate silicone rubber having a total rubber content of from 30 to 90% by weight andB) 95 to 5 parts by weight of resin-forming monomers on a particulate EPDM rubber having a total rubber content of 10 to 50% by weight andC) 10 to 200 parts by weight (based on 100 parts by weight A+B) of a graft product of resin-forming monomers on a particulate acrylate rubber having a total rubber content of from 30 to 80% by weight.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: December 28, 1993
    Assignee: Bauer AG
    Inventors: Herbert Eichenauer, Alfred Pischtschan, Christian Lindner
  • Patent number: 5272205
    Abstract: Molding compounds of(A) 5 to 95% by weight of a graft product of a mixture of 50 to 100 parts by weight styrene, .alpha.-methyl styrene, vinyl toluene, methyl methacrylate or mixtures thereof and 0 to 50 parts by weight acrylonitrile on a particulate silicone rubber with a mean particle diameter (d.sub.50) of from 0.10 to 0.50 .mu.m having a total rubber content of from 30 to 90% by weight and(B) 95 to 5% by weight of a graft product of a mixture of 50 to 100 parts by weight styrene, .alpha.-methyl styrene, vinyl toluene, methyl methacrylate or mixtures thereof and 0 to 50 parts by weight acrylonitrile on a particulate acrylate rubber with a mean particle diameter (d.sub.50) of from 0.05 to 1.00 .mu.m having a total rubber content of 30 to 80% by weight.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: December 21, 1993
    Assignee: Bayer
    Inventors: Herbert Eichenauer, Alfred Pischtschan, Christian Lindner
  • 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: 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