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: 20030069441Abstract: 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: ApplicationFiled: July 3, 2002Publication date: April 10, 2003Inventors: Hans-Joachim Leimkuhler, Herbert Stutz, Helmut Schmidt
-
Publication number: 20030013909Abstract: The present invention relates to a process for preparing (cyclo)aliphatic diisocyanates and triisocyanates corresponding to the formulaType: ApplicationFiled: July 3, 2002Publication date: January 16, 2003Inventors: Hans-Joachim Leimkuhler, Herbert Stutz, Wolfgang Leuckel
-
Patent number: 5859146Abstract: 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: GrantFiled: July 31, 1996Date of Patent: January 12, 1999Assignee: BASF AktiengesellschaftInventors: Sabine Kielhorn-Bayer, Herbert Stutz, Dietrich Sanger, Friedhelm Lehrich, Peter Rieger
-
Patent number: 5516935Abstract: 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: GrantFiled: March 30, 1995Date of Patent: May 14, 1996Assignee: Bayer AktiengesellschaftInventors: Eric Bischof, Peter Briedenbach, Jurgen Dahmer, Andreas Flink, Attila Molnar, Herbert Stutz
-
Patent number: 5026789Abstract: 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: GrantFiled: December 15, 1989Date of Patent: June 25, 1991Assignee: BASF AktiengesellschaftInventors: Thomas Weber, Walter Heckmann, Jurgen Mertes, Helmut Tesch, Volker Altstaedt, Wolfgang Eberle, Thomas Folda, Herbert Stutz, Hans-Gert Recker
-
Patent number: 4879408Abstract: 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: GrantFiled: April 7, 1987Date of Patent: November 7, 1989Assignee: Bayer AktiengesellschaftInventors: Hartmut Knofel, Michael Brockelt, Stefan Penninger, Herbert Stutz
-
Patent number: 4879409Abstract: 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: GrantFiled: April 7, 1987Date of Patent: November 7, 1989Assignee: Bayer AktiengesellschaftInventors: Hartmut Knofel, Michael Brockelt, Stefan Penninger, Herbert Stutz
-
Patent number: 4847408Abstract: 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: GrantFiled: April 25, 1988Date of Patent: July 11, 1989Assignee: Bayer AktiengesellschaftInventors: Hans-Georg Frosch, Heinrich Grave, Herbert Stutz, Eckart Waldau, Peter Fuhrmann
-
Patent number: 4786751Abstract: 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: GrantFiled: November 12, 1985Date of Patent: November 22, 1988Assignee: Bayer AktiengesellschaftInventors: Hartmut Knofel, Michael Brockelt, Stefan Penninger, Herbert Stutz
-
Patent number: 4675437Abstract: 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: GrantFiled: April 29, 1985Date of Patent: June 23, 1987Assignee: Bayer AktiengesellschaftInventors: Hartmut Knofel, Stefan Penninger, Michael Brockelt, Gunter Hammen, Herbert Stutz
-
Patent number: 4665150Abstract: 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: GrantFiled: April 16, 1986Date of Patent: May 12, 1987Assignee: BASF AktiengesellschaftInventors: Helmut Tesch, Michael Portugall, Herbert Stutz, Gerhard Heinz
-
Patent number: 4607069Abstract: 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: GrantFiled: July 3, 1985Date of Patent: August 19, 1986Assignee: BASF AktiengesellschaftInventors: Helmut Tesch, Manfred Heym, Walter Doerflinger, Herbert Stutz, Peter Neumann, Dietmar Nissen, Gerhard Schaefer
-
Patent number: 4603189Abstract: 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: GrantFiled: April 29, 1985Date of Patent: July 29, 1986Assignee: Bayer AktiengesellschaftInventors: Hartmut Knofel, Stefan Penninger, Michael Brockelt, Gunter Hammen, Herbert Stutz
-
Patent number: 4559398Abstract: 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: GrantFiled: July 31, 1984Date of Patent: December 17, 1985Assignee: BASF AktiengesellschaftInventors: Helmut Tesch, Andreas Henne, Manfred Heym, Herbert Stutz
-
Patent number: 4507431Abstract: 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: GrantFiled: September 8, 1983Date of Patent: March 26, 1985Assignee: BASF AktiengesellschaftInventors: Herbert Stutz, Gunter Eckert
-
Patent number: 4448946Abstract: 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: GrantFiled: September 16, 1982Date of Patent: May 15, 1984Assignee: BASF AktiengesellschaftInventors: Herbert Stutz, Karl H. Illers, Herbert Haberkorn, Walter Heckmann
-
Patent number: 4436869Abstract: 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: GrantFiled: March 30, 1982Date of Patent: March 13, 1984Assignee: Elastogran GmbHInventors: Otmar Zipp, Heinz Bollmann, Herbert Stutz, Wolfgang Scholz
-
Patent number: 4421870Abstract: 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: GrantFiled: September 20, 1982Date of Patent: December 20, 1983Assignee: BASF AktiengesellschaftInventors: Herbert Stutz, Karl H. Illers, Herbert Haberkorn, Walter Heckmann
-
Patent number: 4251639Abstract: 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: GrantFiled: April 9, 1979Date of Patent: February 17, 1981Assignee: BASF AktiengesellschaftInventors: Wolfgang Jarre, Herbert Stutz, Ernst Schoen
-
Patent number: RE32628Abstract: 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: GrantFiled: November 24, 1986Date of Patent: March 22, 1988Assignee: BASF AktiengesellschaftInventors: Helmut Tesch, Manfred Heym, Walter Doerflinger, Herbert Stutz, Peter Neumann, Dietmar Nissen, Gerhard Schaefer