Patents by Inventor Herbert Stutz

Herbert Stutz 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).

  • Publication number: 20030069441
    Abstract: The present invention relates to a novel process for preparing (cyclo)aliphatic diisocyanates and triisocyanates by phosgenation of (cyclo)aliphatic diamines and triamines in the gas phase by accelerating the flow of at least one of reactants in the region where the reactants are mixed.
    Type: Application
    Filed: July 3, 2002
    Publication date: April 10, 2003
    Inventors: Hans-Joachim Leimkuhler, Herbert Stutz, Helmut Schmidt
  • Publication number: 20030013909
    Abstract: The present invention relates to a process for preparing (cyclo)aliphatic diisocyanates and triisocyanates corresponding to the formula
    Type: Application
    Filed: July 3, 2002
    Publication date: January 16, 2003
    Inventors: Hans-Joachim Leimkuhler, Herbert Stutz, Wolfgang Leuckel
  • Patent number: 5859146
    Abstract: Thermoplastic molding materials containA) from 10 to 99.5% by weight of a thermoplastic polymer selected from the group consisting of the polyoxymethylenes, polyolefins, polyesters, polycarbonates, polystyrene, ABS, ASA, SAN, polyamides or poly(meth)acrylates or mixtures thereof,B) from 0.5 to 80% by weight of a thermoplastic polyurethane having a melting point of <200.degree. C.,C) from 0 to 50% by weight of a fibrous or particulate filler or a mixture thereof andD) from 0 to 30% by weight of conventional additives and processing assistants,the percentages by weight of the components A) to D) summing to 100%.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: January 12, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Sabine Kielhorn-Bayer, Herbert Stutz, Dietrich Sanger, Friedhelm Lehrich, Peter Rieger
  • Patent number: 5516935
    Abstract: Diisocyanates are produced by gas-phase phosgenation of aliphatic diamines having two primary amino groups in the 1,2- or 1,3-position to one another or by cycloaliphatic diamines having two primary amino groups in the 1,2- or 1,3-position to one another.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: May 14, 1996
    Assignee: Bayer Aktiengesellschaft
    Inventors: Eric Bischof, Peter Briedenbach, Jurgen Dahmer, Andreas Flink, Attila Molnar, Herbert Stutz
  • Patent number: 5026789
    Abstract: A curable impact modified epoxy resin mixture suitable for producing high performance composites is composed ofA. an aromatic epoxy compound,B. an amine type curing agent,C. from 10 to 40% by weight of an aromatic thermoplastic oligomer which contains reactive groups, preferably a polyether sulfone, andD. from 0.1 to 10% by weight of a high molecular weight emulsifier, preferably a phenoxy resin, an epoxy resin or a thermoplastic copolymer, which is compatible not only with the epoxy compound A but also with oligomer C.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: June 25, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Weber, Walter Heckmann, Jurgen Mertes, Helmut Tesch, Volker Altstaedt, Wolfgang Eberle, Thomas Folda, Herbert Stutz, Hans-Gert Recker
  • Patent number: 4879408
    Abstract: Diisocyanates and isomer mixtures of diisocyanates corresponding to the formula ##STR1## in which R.sup.1, R.sup.2, m and n are as defined herein are produced by phosgenating diamines and isomer mixtures of diamines corresponding to the formula ##STR2## in which R.sup.1, R.sup.2, m and n are as defined herein. These diisocyanates which are liquid at room temperature and highly compatible with polyols are particularly useful in the production of polyurethanes.
    Type: Grant
    Filed: April 7, 1987
    Date of Patent: November 7, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hartmut Knofel, Michael Brockelt, Stefan Penninger, Herbert Stutz
  • Patent number: 4879409
    Abstract: A diisocyanate corresponding to the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3, m and n are as defined herein is prepared by phosgenating a diamine corresponding to the formula ##STR2## in which R.sup.1, R.sup.2, R.sup.3, m and n are as defined herein. The diisocyanate may contain C.sub.1 -C.sub.12 -monoalkyl-substituted methylene-bis-(cyclohexylisocyanate)isomers in an amount of up to 40 wt. %. These new diisocyanates which are liquid at room temperature and compatible with polyols are particularly useful in the production of polyurethanes.
    Type: Grant
    Filed: April 7, 1987
    Date of Patent: November 7, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hartmut Knofel, Michael Brockelt, Stefan Penninger, Herbert Stutz
  • 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: 4786751
    Abstract: Diisocyanates and isomeric mixtures of diisocyanates corresponding to the formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3, m and n are as defined herein are made by phosgenating diamines corresponding to the formula ##STR2## in which R.sub.1, R.sub.2, R.sub.3, m and n are as defined herein at a temperature of from -20.degree. to 250.degree. C. These diisocyanates are particularly useful as starting materials for the production of polyurethanes by the isocyanate polyaddition process.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: November 22, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hartmut Knofel, Michael Brockelt, Stefan Penninger, Herbert Stutz
  • Patent number: 4675437
    Abstract: Cycloaliphatic triisocyanates or isomer mixtures of such triisocyanates corresponding to the formula ##STR1## in which R represents hydrogen or a C.sub.1 -C.sub.4 alkyl group are produced by phosgenating the corresponding cycloaliphatic triamines or isomer mixtures of such triamines or a salt thereof.These triisocyanates are useful in the production of polyisocyanate addition products, particularly polyurethane coatings and lacquers.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: June 23, 1987
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hartmut Knofel, Stefan Penninger, Michael Brockelt, Gunter Hammen, Herbert Stutz
  • Patent number: 4665150
    Abstract: A curable epoxy resin mixture containing an adduct of an epoxy resin with a bifunctional phenol or a bifunctional aromatic carboxylic acid of the formula ##STR1## where A=SO.sub.2 or CO, Ar is ##STR2## and X is OH or COOH, and an aromatic amine as a curing agent.
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: May 12, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Tesch, Michael Portugall, Herbert Stutz, Gerhard Heinz
  • Patent number: 4607069
    Abstract: A solvent-free curable composition has a long shelf life and consists ofA 100 parts by weight of an epoxy resin andB from 10 to 100 parts by weight of, as a curing agent for the epoxy resin, an aromatic diamine containing ##STR1## groups, with or without C from 0.01 to 5 parts by weight of an accelerator, the curing agent for the epoxy resin being finely dispersed in the latter and preferably having a particle size of less than 10 .mu.m. The preferred epoxy resin curing agent is 4,4'-diaminodiphenyl ketone. The curable composition is used in particular for the preparation of fiber-reinforced materials.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: August 19, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Tesch, Manfred Heym, Walter Doerflinger, Herbert Stutz, Peter Neumann, Dietmar Nissen, Gerhard Schaefer
  • Patent number: 4603189
    Abstract: Triisocyanates and isomeric mixtures of triisocyanates corresponding to the formula ##STR1## in which R represents hydrogen or an alkyl group having from 1 to 4 carbon atoms are made by phosgenating the corresponding triamine. These triisocyanates are particularly useful in the production of polyurethanes, especially polyurethane lacquer coats.
    Type: Grant
    Filed: April 29, 1985
    Date of Patent: July 29, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hartmut Knofel, Stefan Penninger, Michael Brockelt, Gunter Hammen, Herbert Stutz
  • Patent number: 4559398
    Abstract: A curable composition consisting ofA. 100 parts by weight of an epoxy resin,B. from 4 to 100 parts by weight of a conventional curing agent for epoxy resins, andC. from 0.1 to 5 parts by weight of an N-acylimidazole which possesses an aromatic acyl component which is substituted at the two positions ortho to the carbonyl groupcan be used to produce moldings, coatings, finishes, adhesives and composite fiber materials.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: December 17, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Tesch, Andreas Henne, Manfred Heym, Herbert Stutz
  • Patent number: 4507431
    Abstract: Aqueous dispersions of crosslinked polyurethane ionomers can be advantageously obtained by a method in which polyurethane prepolymers possessing salt groups and aliphatically and/or cycloaliphatically bonded terminal isocyanate groups, in a water-miscible organic solvent, are mixed with polyfunctional polyisocyanates, the resulting solution is dispersed in water and the organic solvent is evaporated off.
    Type: Grant
    Filed: September 8, 1983
    Date of Patent: March 26, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Stutz, Gunter Eckert
  • Patent number: 4448946
    Abstract: The invention relates to a process for the manufacture of noncellular polyurethane elastomers by reacting 4,4'-diisocyanato-1,2-diphenylethane or diisocyanato-1,2-diphenylethane isomer mixtures with a 4,4'-diisocyanato-1,2-diphenylethane content in excess of 95 percent by weight, higher molecular weight polyhydroxyl compounds and low molecular weight chain extenders optionally in the presence of auxiliaries and additives.The polyurethane elastomers produced in accordance with this invention excel by a greater hardness and improved mechanical properties compared with polyurethane elastomers based on 4,4'-diphenylmethane diisocyanate with otherwise comparable composition.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: May 15, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Stutz, Karl H. Illers, Herbert Haberkorn, Walter Heckmann
  • Patent number: 4436869
    Abstract: A process for the preparation of moldings, in particular resilient elements, which by virtue of a densified surface zone with substantially closed cells, have only a low water absorption, wherein a mixture comprising:(a) 100 parts by weight of an NCO-containing prepolymer, having an NCO content of from 3 to 6% by weight and based on organic diisocyanates and substantially linear polyester-polyols or polytetramethylene ether glycol,(b) from 0.5 to 1.6 parts by weight of water,(c) one or more catalysts, preferably a tertiary amine, in an amount of from 0.01 to 2.0 parts by weight and(d) assistants, with or without additives, is reacted in a closed mold, while undergoing densification, the surface temperature of the inner wall of the mold being from 50.degree. to 70.degree. C.
    Type: Grant
    Filed: March 30, 1982
    Date of Patent: March 13, 1984
    Assignee: Elastogran GmbH
    Inventors: Otmar Zipp, Heinz Bollmann, Herbert Stutz, Wolfgang Scholz
  • Patent number: 4421870
    Abstract: The invention relates to a method for the preparation of cellular polyurethane elastomers with densities of approximately 250 to 800 grams per liter by reacting 4,4'-diisocyanato-1,2-diphenylethane or a diisocyanato-1,2-diphenylethane isomer mixture with a 4,4'-diisocyanato-1,2-diphenylethane content of more than 95 percent by weight with higher molecular weight polyhydroxyl compounds and water, as well as optionally chain extenders in the presence of auxiliaries and/or additives according to the one-shot or preferably the prepolymer method in closed molds.Compared with products based on 4,4'-diisocyanatodiphenylmethane, the polyurethane elastomer molded parts have improved physical and thermal properties.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: December 20, 1983
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Stutz, Karl H. Illers, Herbert Haberkorn, Walter Heckmann
  • Patent number: 4251639
    Abstract: This invention concerns a process for the manufacture of flexible polyurethane foams from urethane-modified aromatic polyisocyanates having an NCO content of 15 to 30 percent by weight and a viscosity of 100 to 2000 centipoises at 20.degree. C., which are obtained by reaction of a mixture of diphenylmethane diisocyanates and polyphenylene polymethylene polyisocyanates containing 55 to 85 percent by weight of diphenylmethane diisocyanate based on the total weight of the polyisocyanate mixture and a hydroxyl compound with 2 to 4 Zerewitinoff active hydrogen atoms and a molecular weight of 60 to 1500, in an equivalency ratio of NCO groups to active hydrogen atoms of the hydroxyl compound of 2:1 to 60:1, polyols, catalysts, blowing agents, and optionally, chain extenders, auxiliaries, and additives.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: February 17, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang Jarre, Herbert Stutz, Ernst Schoen
  • Patent number: RE32628
    Abstract: A solvent-free curable composition has a long shelf life and consists ofA 100 parts by weight of an epoxy resin andB from 10 to 100 parts by weight of .[.,.]. .Iadd.4,4-bis-(para-aminobenzoyl)-piperazine .Iaddend.as a curing agent for the epoxy resin, .[.an aromatic diamine containing ##STR1## groups,.]. with or without C from 0.01 to 5 parts by weight of an accelerator, the curing agent for the epoxy resin being finely dispersed in the latter and preferably having a particle size of less than 10 .mu.m. .[.The preferred epoxy resin curing agent is 4,4'-diaminodiphenyl ketone..]. The curable composition is used in particular for the preparation of fiber-reinforced materials.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: March 22, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Helmut Tesch, Manfred Heym, Walter Doerflinger, Herbert Stutz, Peter Neumann, Dietmar Nissen, Gerhard Schaefer