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: 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: 5187231
    Abstract: Plastics suitable for use as thermoplastic moulding compositions obtained fromA) a thermoplastic vinyl polymer andB) a mixture ofB1) a copolymer of 35 to 49% by weight of maleic acid anhydride and 65 to 51% by weight of styrene andB2) a copolymer of styrene, .alpha.-methylstyrene or mixtures thereof on the one hand and acrylonitrile on the other having an acrylonitrile content of 35 to 60% by weight [based on B2)]and a process for their preparation.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: February 16, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Herbert Eichenauer, Holger Lutjens, Hans-Eberhard Braese
  • Patent number: 5183850
    Abstract: Graft polymers ofa) 5 to 95% by weight of a copolymer of 20 to 60% by weight of a 1,3,5-triazine derivative corresponding to formula (I) ##STR1## in which R=H, C.sub.1-2 alkyl, and 40 to 80% by weight of other vinyl monomers as the graft base andb) 5 to 95% by weight of a thermoplastic polymer as the graft shell,their use as thermoplastic molding compounds and as flame-proofing agents for other synthetic materials.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: February 2, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Christian Lindner, Herbert Eichenauer
  • Patent number: 5131916
    Abstract: Aqueous emulsions based on certain graft polymers are outstandingly suitable for the production of colored inks for so-called marker pens. They are distinguished, for example, by a high storage stability.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: July 21, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Artur Haus
  • Patent number: 5102939
    Abstract: Stabilizing, synergistically acting mixtures of phenolic antioxidants and sulphur-containing elastic-thermoplastic graft products having terminal thioalkyl groups.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: April 7, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Alfred Pischtschan, Karl-Heinz Ott
  • Patent number: 5100945
    Abstract: Reaction products of 1 mol of a cycloaliphatic diol corresponding to formula IHO--R--OH Iwith 2 mols cycloaliphatic carboxylic anhydrides corresponding to formulae II and/or III ##STR1## in which R is a cycloaliphatic hydrocarbon radical having 6 to 20 carbon atoms onto which the hydroxy groups are bonded directly or via methylene groups and X represents ##STR2## chemical bond --obtainable obtainable by fusion of the cycloaliphatic diol and the cycloaliphatic carboxylic anhydride in an inert gas atmosphere at temperatures of from 100.degree. C. to 250.degree. C., and the alkali and ammonium salts of these reaction products, and their use as emulsifiers.
    Type: Grant
    Filed: April 2, 1991
    Date of Patent: March 31, 1992
    Assignee: Bayer Aktiengesellschaft
    Inventors: Adolf Schmidt, Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan
  • Patent number: 5071921
    Abstract: Thermoplastic block copolymers of the idealized formulae (I)A--B--A; B--A--B or (A--B).sub.x (I)in whichx=1 to 40,and whereinA is the radical of a homopolymer of styrene, vinylnaphthalene, butadiene and isoprene, andB the radical of a homopolymer of a cyclic polycarbonate or lactone,the average molecular weight of blocks A and B being greater than 800, and a process for the preparation of these blocks copolymers in several reaction stages.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: December 10, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Christian Lindner, Edgar Leitz, Karl-Heinz Ott, Hans-Josef Buysch, Peter Mues, Hartwig Hocker, Helmut Keul
  • Patent number: 5071946
    Abstract: Reaction products of 1 mol of a cycloaliphatic diol corresponding to formula IHO--R--OH Iwith 2 mols cycloaliphatic carboxylic anhydrides corresponding to formulae II and/or III ##STR1## in which R is a cycloaliphatic hydrocarbon radical having 6 to 20 carbon atoms onto which the hydroxy groups are bonded directly or via methylene groups andX represents ##STR2## chemical bond obtainable by fusion of the cycloaliphatic diol and the cycloaliphatic carboxylic anhydride in an inert gas atmosphere at temperatures of from 100.degree. C. to 250.degree. C., and the alkali and ammonium salts of these reaction products, and their use as emulsifiers.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: December 10, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Adolf Schmidt, Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan
  • Patent number: 5066717
    Abstract: This invention relates to thermostable thermoplastic moulding compounds consisting of a thermoplastic aromatic polycarbonate resin, a graft polymer and optionally a thermoplastic vinyl polymer wherein the graft or vinyl polymer is emulsion polymerized with an emulsifier which is the reaction product of 2 mols of certain carboxylic anhydrides and 1 mole of certain diols.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: November 19, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Dieter Wittmann, Adolf Schmidt, Karl-Heinz Ott
  • Patent number: 5064885
    Abstract: This invention relates to aliphatic polycarbonates including sequential copolymers based on cyclic aliphatic carbonates and esters and block copolymers of blocks of polymerised cyclic aliphatic carbonates and blocks of polymerised vinyl compounds stabilized against thermal degradation containing 0.01 to 3.0% by weight, based on polymer, of a compound of trivalent phosphorus.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: November 12, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Friedemann Muller, Edgar Leitz, Herbert Eichenauer, Karl-Heinz Ott, Hans-Josef Buysch
  • Patent number: 5064899
    Abstract: Thermoplastic moulding compounds composed of99.8-95% by weight of A) 0-100% by weight of a graft polymer B) 100-0% by weight of a thermoplastic polymer of vinyl monomers and0.2 to 5% by weight of a polyalkylene ether which has been grafted with a polymer of C.sub.1 -C.sub.6 alkyl acrylates, cycloalkyl acrylates or methacrylates and optionally styrene or .alpha.-methyl styrene.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: November 12, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Norbert Schon, Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan
  • Patent number: 5061752
    Abstract: Thermoplastic moulding compositions composed ofI) 99.8-95% by weight of(A) 0-100% by weight of one or more graft polymers comprise the monomers styrene, .alpha.-methyl styrene, methyl methacrylate or a mixture of 95-50% by weight of styrene, .alpha.-methyl styrene, ring substituted styrene, methyl methacrylate or mixtures thereof with 5-50% by weight of methacrylonitrile, acrylonitrile, maleric acid anhydride, N-substituted malerimides or mixtures thereof, grafted onto a rubber substrate, andB) 100 to 0%, by weight of one or more thermoplastic vinyl polymers, andII) 0.2 to 5% by weight of a polyalkylene ether modified by a radical former which can be compounds conventionally used as an initiator for radical polymerization such as peroxides.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: October 29, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Josef Buysch, Norbert Schon, Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan
  • Patent number: 5041485
    Abstract: Dispersions of stabilizers for plastics in water which contain special reaction products of diols and carboxylic acid anhydrides as auxiliary emulsifiers, and which are characterized by simple preparation, stability and good effectiveness in chemical materials.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: August 20, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Karl-Erwin Piejko, Christian Lindner, Adolf Schmidt, Karl-Heinz Ott
  • Patent number: 5028349
    Abstract: Elastic-thermoplastic or thermoplastic powder-form moulding compositions having uniform particles size and improved thermal stability and processes for their manufacture.
    Type: Grant
    Filed: March 30, 1988
    Date of Patent: July 2, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Alfred Pischtschan, Karl-Heinz Ott
  • Patent number: 4968750
    Abstract: Block copolymers composed of recurrent structural units belonging to the series comprising polysiloxanes and recurring structural units belonging to the series comprising homopolymers, copolymers or terpolymers of vinyl-aromatic compounds and acrylic monomers of mixtures thereof.
    Type: Grant
    Filed: October 25, 1989
    Date of Patent: November 6, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Christian Lindner, Karl-Heinz Ott
  • Patent number: 4965300
    Abstract: Polymers having a sequential structure of the following formula--A--X--B].sub.r (I)with r=1 to 20, in which --A-- is a polymer of a cyclic carbonate, --B-- is a polymer of a lactone and --X-- is a link, with a decreasing concentration of residues of the cyclic carbonate in the --B-- direction and a decreasing concentration of residues of the lactone in the --A-- direction, and the use of the these products as molding compositions.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: October 23, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Edgar Leitz, Karl-Heinz Ott
  • Patent number: 4960822
    Abstract: Thermoplastic moulding compounds containing(A) from 5 to 90 parts by weight of one or more thermoplastic polymers,(B) from 5 to 90 parts by weight of one or more graft polymers and(C) from 0.25 to 40 parts by weight of a copolymer having a sequential structure corresponding to the idealized formula (I)(A-X-B).sub.n (I)whereinA=a polymer of a cyclic carbonate,B=a polymer of another cyclic ester andX=a middle member containing both partial structures of A and B.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: October 2, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Edgar Leitz, Karl-Heinz Ott, Alfred Pischtschan
  • Patent number: 4959410
    Abstract: Polymer mixtures having high tensile strength and good tear propagation resistance, consisting of(A) from 10 to 95 parts by weight of a graft polymer,(B) from 0 to 75 parts by weight of a thermoplastic resin component and(C) from 5 to 60 parts by weight of a copolymer having a sequence type of structure corresponding to the idealized formula (I)(A--X--B).sub.n (I)whereinA=polymer of a cyclic carbonate,B=polymer of another cyclic ester andX=middle member containing partial structures of both A and B.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: September 25, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Edgar Leitz, Karl-Heinz Ott, Christian Lindner, Lothar Meier, Otto Billinger
  • Patent number: 4959419
    Abstract: Polycarboxylic acids and their salts corresponding to the following general formula[X]--(NHOC--Y--COO M).sub.n (I)in whichX is the residue of a hydrophobic, linear or branched vinyl oligomer having an average molecular weight M.sub.n of from 200 to 5000 and preferably from 300 to 3000,Y is the 1,2-vinylene, 1,2-ethylene, 1,3-propylene, 1,2-phenylene, 1,2-cyclohexen-4-ylene or 1,2-cyclohexylene group,n is a number of from 1.4 to 3.0 and preferably from 1.6 to 2.3 andM is hydrogen, an alkali metal, an ammonium, C.sub.1 -C.sub.4 alkylammonium or C.sub.2 -C.sub.3 hydroxyalkylammonium group, which are useful as surfactants and emulsifiers in aqueous systems.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: September 25, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Adolf Schmidt, Udo W. Hendricks, Bruno Bomer, Karl H. Ott, Herbert Eichenauer, Alfred Pischtschan
  • Patent number: 4940747
    Abstract: Thermoplastic moulding materials, of vinyl chloride polymers, which contain a polymer, prepared in the presence of mercaptans, from styrene, .alpha.-methylstyrene, vinyltoluene, acrylonitrile, methyl methacrylate or mixtures thereof and which possess improved processing properties.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: July 10, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Christian Lindner, Karl-Heinz Ott, Hans-Eberhard Braese