Patents Represented by Attorney Gene Harsh
  • Patent number: 4851567
    Abstract: This invention relates to N,N'-bis(5-isocyanatonaphthyl)urea and a process for its preparation by hydrolysis of naphthalene-1,5-diisocyanate. This invention also relates to a method for preparing a polyurethane or polyurea comprising reacting N,N'-bis(5-isocyanatonaphthyl)urea with an NCO-reactive compound.
    Type: Grant
    Filed: January 10, 1989
    Date of Patent: July 25, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Ruckes, Gerhard Grogler, Richard Kopp, Heinrich Hess
  • Patent number: 4851531
    Abstract: The present invention is directed to isocyanato isocyanurates prepared from diisocyanates which contain a sterically unhindered isocyanate group bound to a primary aliphatic carbon atom and a sterically hindered isocyanate group which is bound to a tertiary carbon atom forming part of a cycloaliphatic ring system, said diisocyanate having an NCO content of about 20 to 50% by weight. The present invention is further directed to a process for preparing these isocyanato isocyanurates by catalytic trimerization and the use of the isocyanato isocyanurates in a process for the production of polyisocyanate polyaddition products, preferably two-component polyurethane stoving lacquers.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: July 25, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Reinhard Halpaap, Gerhard Klein, Roland Richter, Hanns P. Muller, Josef Pedain, Hans-Joachim Kreuder
  • Patent number: 4851570
    Abstract: This invention relates to a process for the continuous production of an organic monoisocyanate or polyisocyanate in a single stage reaction. A reaction mixture is formed by continuously mixing, at a temperature elevated above room temperature but not exceeding about 150.degree. C., a solution in a substantially inert organic solvent of a monoamine or polyamine corresponding to the monoisocyanate or polyisocyanate and a solution in a substantially inert organic solvent of phosgene. The reaction mixture is continuously passed upwards from below through a reaction column comprising at least 10 separate chambers separated by perforated plates, wherein each perforation of said perforated plates has a diameter of less than about 20 mm.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: July 25, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gottfried Zaby, Helmut Judat, Siegbert Humburger, Stefaan de Vos, Rolf W. Eckermann
  • Patent number: 4847408
    Abstract: The present invention relates to a process for the preparation of diisocyanates corresponding to the formulaOCN--R--NCOwhereinR denotes a (cyclo)aliphatic hydrocarbon group with up to 15 carbon atomsby phosgenation of the corresponding diamines represented by the formulaH.sub.2 N--R--NH.sub.2in the gas phase, characterized in that(a) the diamines in vapor form, optionally diluted with an inert gas or with the vapors of an inert solvent, and phosgene are separately heated to temperatures of about 200.degree. to 600.degree. C. and continuously reacted together in a cylindrical reaction chamber which is free from moving parts and heated to about 200.degree. to 600.degree. C., while a turbulent flow is maintained in the reaction chamber.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: July 11, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Georg Frosch, Heinrich Grave, Herbert Stutz, Eckart Waldau, Peter Fuhrmann
  • Patent number: 4847312
    Abstract: A polycarbonate molding composition comprising an aromatic polycarbonate resin and a compound conforming to ##STR1## wherein n, x and y independently are 0 or 1 and R is a C.sub.1 -C.sub.20 hydrocarbon radical was found to have advantageous hydrolytic stability.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: July 11, 1989
    Assignee: Mobay Corporation
    Inventors: Charles E. Lundy, Sivaram Krishnan
  • Patent number: 4847320
    Abstract: The present invention relates to a process for the production of stable dispersions of polyureas and/or polyhydrazodicarbonamides in a hydroxyl-group-containing material by reacting an organic di- or polyisocyanate with a composition selected from the group consisting of polyamines containing primary and/or secondary amine groups, hydrazines, hydrazides, and mixtures thereof, in said hydroxyl-group containing material, in the presence of a dispersion stabilizing compound.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: July 11, 1989
    Assignee: Mobay Corporation
    Inventors: Michael K. Lowery, Richard E. Keegan, Mark A. Koshute
  • Patent number: 4847153
    Abstract: The invention concerns thermoplastic molding compositions comprising a blend of a polycarbonate resin, a conjugated diene graft polymer and an impact modifying agent characterized in that said conjugated diene graft polymer contains at least some .alpha.-methyl styrene which compositions combine improved impact strength and good HDT values.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: July 11, 1989
    Assignee: Mobay Corporation
    Inventors: Ulrich R. Grigo, Stuart L. Cohen
  • Patent number: 4846099
    Abstract: The present invention is directed to an apparatus for applying a foam-forming flowable reaction mixture onto a substrate comprising an applicator tube connected to a mixer, said tube being provided with outlet openings and extending transversely over the substrate, further characterized in that the applicator tube is connected to a vibrating means.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: July 11, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt Krippl, Karl D. Kreuer, Erwin Hoffmann
  • Patent number: 4847321
    Abstract: The present invention relates to a process for the production of storable thermosetting polyurethane-polyurea compositions wherein a storable isocyanate component stabilized by a surface coating and a polyol and/or polyamine component are separately prepared. A one-component polyurethane-polyurea reactive mixture is formed by mixing just before the intended use the separate components under mild shear forces at a temperature below the thickening temperature of the final reactive mixture.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: July 11, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinrich Hess, Gerhard Grogler, Richard Kopp, Manfred Bock, Werner Clarenz
  • Patent number: 4847307
    Abstract: The present invention is directed to a process for the production of optionally cellular, polyurethane elastomer moldings or optionally cellular, rigid structural polyurethanes by reacting a reaction mixture containing(i) a polyisocyanate,(ii) a high molecular weight polymer having at least two hydroxy groups and having a molecular weight of 400 to about 10,000,(iii) about 5 to 50% by weight, based on the weight of component (ii) of a chain-extender having at least two hydroxy groups and(iv) about 0.05 to 10 weight percent, based on the weight of components (ii) and (iii) of a salt based on a carboxy functional siloxane and an amidine group-containing compound of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: July 11, 1989
    Assignee: Mobay Corporation
    Inventors: John E. Dewhurst, Stephen J. Harasin
  • Patent number: 4843105
    Abstract: The invention is directed to the formation of filler containing anionically modified polyurethane (urea) compositions by reacting suitable polyurethane (urea) forming ingredients in the presence of from 5 to 97% by weight of fillers selected from the group consisting of(i) finely divided or lumpy foam particles,(ii) fossile lignocelluloses,(iii) carbon powder, and(iv) mixtures thereof,said filler-containing polyurethane (urea) having a water absorbability of from 33 to 97% by weight, and having an anionic group content of from 10 to 3000 milliequivalents of anionic groups and/or groups capable of anionic group formation per 1000 grams of said polyurethane (urea) components.
    Type: Grant
    Filed: July 11, 1986
    Date of Patent: June 27, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Artur Reischl, Kurt Mack
  • Patent number: 4843108
    Abstract: Polyamines are produced by hydrolyzing isocyanate compounds having an NCO content of from 0.5 to 40 wt. % with from 0.75 to 40 moles of water per equivalent of NCO groups in the presence of from 0.021 to 0.099 wt. % sodium hydroxide and at least 10 wt. % water-miscible polar organic solvent containing nitrile, ketone, sulfoxide or ether groups having a boiling point of from 56.degree. to 250.degree. C. The reaction mixture is maintained in a homogeneous phase. The reaction is carried out at 40.degree. to 170.degree. C. These polyamines are useful in the production of polyurethane(urea)s.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: June 27, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Ruckes, Werner Rasshofer, Klaus Konig, Richard Kopp
  • Patent number: 4843107
    Abstract: Polyamines containing primary amino groups are made by a one-shot process for the hydrolysis of prepolymers containing isocyanate end groups and having an isocyanate content of from 0.5 to 40 weight % with 0.75 to 40 mol of water per equivalent of isocyanate groups in the presence of very small quantities of sodium hydroxide in certain organic, polar solvents. The compounds containing isocyanate groups used for this process are isocyanate prepolymers (preferably containing urethane groups). Hydrolysis according to this process leads directly to the polyamines with elimination of carbon dioxide. These polyamines may be isolated by the usual methods and the removal of the small quantities of catalyst may advantageously be omitted. These polyamines are useful for the preparation of polyurethane(urea)s.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: June 27, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Ruckes, Werner Rasshofer, Klaus Konig, Richard Kopp
  • Patent number: 4837243
    Abstract: A Chemical Blowing Agent (CBA) concentrate was developed comprising a modifying agent and a chemical blowing agent. The CBA is characterized in that its decomposition products contain a primary amine. The modifying agent is a blend of a maleic anhydride copolymer and a butadiene based rubber. It was surprisingly found that resin degradation which often accompanies foam moldings using a CBA of the present type and is expressed in terms of a reduction in the molecular weight of the resin, is much reduced upon the incorporation of the modifying agent and chemical blowing agent of the invention. The concentrate may optionally further comprise a polymeric resin component.
    Type: Grant
    Filed: November 15, 1988
    Date of Patent: June 6, 1989
    Assignee: Mobay Corporation
    Inventors: Roger J. White, Sivaram Krishnan
  • Patent number: 4837359
    Abstract: Polyisocyanates with biuret structures are produced at temperatures above 250.degree. C. More specifically, an excess of a diisocyanate having aliphatically and/or cycloaliphatically bound isocyanate groups is reacted with a diamine containing aliphatically and/or cycloaliphatically bound amino groups at temperatures above 250.degree. C. for relatively brief periods of time. Water and/or polyvalent alcohols may optionally be included in the reaction mixture. The polyisocyanates with biuret structures produced by this process are characterized by good color, good dilutability with covalent solvents and comparatively low viscosity.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: June 6, 1989
    Assignees: Bayer Aktiengesellschaft, Mobay Corporation
    Inventors: Helmut Woynar, Klaus Konig, Josef Pedain, William E. Slack
  • Patent number: 4837321
    Abstract: The present invention is directed to a process for the preparation of isocyanurate group-containing polyisocyanates by trimerizing a portion of the isocyanate groups of an organic polyisocyanate and terminating the trimerization reaction by the addition of a catalyst poison, characterized in that the trimerization catalyst used is a quaternary phosphonium salt of a tertiary phosphine and an alkylating ester of an acid of phosphorus. The present invention also relates to the use of the polyisocyanates obtained according to this process, optionally, in a form that has been freed from excess starting polyisoyanate and/or optionally blocked with blocking agents for isocyanate groups as the isocyanate component for the preparation of polyisocyanate polyaddition products, preferably polyurethanes.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: June 6, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Dimitrios Kerimis, Hanns P. Muller
  • Patent number: 4835224
    Abstract: Polyamines are produced by hydrolyzing an isocyanate compound in the presence of at least one of a selected group of catalysts and a water miscible polar organic solvent in substantially homogeneous phase at 40.degree.-170.degree. C. The catalyst employed is selected from potassium hydroxide, rubidium hydroxide, cesium hydroxide, potassium alcoholates, rubidium alcoholates, cesium alcoholates, potassium carboxylates, rubidium carboxylates and cesium carboxylates. These polyamines are useful in the production of polyurethane(urea)s.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: May 30, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Andreas Ruckes, Werner Rasshofer, Klaus Konig, Richard Kopp
  • Patent number: 4835239
    Abstract: The present invention relates to diisocyanates having an isocyanate content of from about 20 to 50% by weight, optionally in the form of isomeric mixtures, characterized in that, in addition to containing a sterically unhindered isocyanate group attached to a primary aliphatic carbon atom, they contain a sterically hindered isocyanate group attached to a tertiary carbon atom which forms part of a cycloaliphatic ring system.The invention also relates to the use of the new diisocyanates, optionally blocked with blocking agents for isocyanate groups, as isocyanate component for the preparation of polyurethanes suitable for use as coatings.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: May 30, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gerhard Klein, Dieter Arlt
  • Patent number: 4834003
    Abstract: This invention relates to a process for the combustion of aqueous sewage sludge comprising burning, in a fluidized bed furnace, an aqueous mixture of a sewage sludge and a TDI residue, said aqueous mixture having a total solids content of from 25 to 98% by weight of the aqueous mixture, wherein the TDI residue comprises 25 to 95% by weight of the total solids content.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: May 30, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Artur Reischl, Friedhelm Sahlmen
  • Patent number: 4833176
    Abstract: The present invention is directed to a process for the preparation of cold setting, flexible, polyurethane, molded foams in a closed mold by reacting a polyisocyanate with a high molecular weight polyol in the presence of about 5 to 15, preferably about 6 to 12 parts by weight of water, based on the weight of the high molecular weight polyol at an isocyanate index below 70.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: May 23, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus-Dieter Wolf, Hans-Joachim Kogelnik