Patents by Inventor Karl Fuhr
Karl Fuhr 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).
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Patent number: 5741838Abstract: This invention relates to halogen-free flame retardant thermoplastic moulding compounds prepared from polycarbonate and graft polymer, which may contain thermoplastic copolymer and/or polyalkylene terephthalate, wherein the flame retardant used is polyphenylene oxide combined with phosphorus compounds.Type: GrantFiled: August 9, 1995Date of Patent: April 21, 1998Assignee: Bayer AGInventors: Karl Fuhr, Thomas Eckel, Dieter Wittmann, Heinrich Alberts
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Patent number: 5658974Abstract: The invention relates to halogen-free, flameproofed, thermoplastic moulding compounds made from polycarbonate and graft polymers which may optionally contain a copolymer and/or polyalkylene terephthalate, wherein a silicon resin in combination with a blend of monophosphate and oligomeric polyphosphates is used as a flameproofing agent.Type: GrantFiled: October 4, 1995Date of Patent: August 19, 1997Assignee: Bayer AGInventors: Karl Fuhr, Thomas Eckel, Dieter Wittmann, Heinrich Alberts
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Patent number: 5621029Abstract: This invention relates to halogen-free flame retardant thermoplastic moulding compositions prepared from polycarbonate and graft polymer, which may optionally contain thermoplastic copolymer and/or polyalkylene terephthalate.The flame retardant used is a synergistic combination of silicone resin and polyphenylene oxide.Type: GrantFiled: November 24, 1995Date of Patent: April 15, 1997Assignee: Bayer AGInventors: Thomas Eckel, Karl Fuhr, Dieter Wittmann, Heinrich Alberts
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Patent number: 5272193Abstract: Thermoplastic polycarbonate moulding compounds containing 40 to 90 parts by weight of a thermoplastic aromatic polycarbonate; 0 to 80 parts by weight of a copolymer or polycondensate consisting of 0 to 50 parts by weight of a thermoplastic copolymer of 50 to 95% by weight of styrene, .alpha.-methylstyrene, styrene alkylated in the nucleus, halogenated styrene or mixtures thereof and 5 to 50% by weight of acrylonitrile, methacrylonitrile, alkyl acrylate, alkyl methacrylate, maleic acid anhydride, N-substituted maleiimide, vinyl acetate or mixtures thereof and/or 0 to 80 parts by weight of a thermoplastic polyalkylene terephthalate; 1 to 25 parts by weight of graft polymer prepared from 5 to 90 parts by weight of a mixture of: 50 to 95% by weight of styrene, .alpha.Type: GrantFiled: June 29, 1992Date of Patent: December 21, 1993Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott
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Patent number: 5240978Abstract: A flame resistant molding composition containing a polycarbonate resin, a graft polymer and, as a flame retarding agent a phosphoric acid ester of novolak in combination with an anti drip agent is disclosed. The composition may further contain a thermoplastic copolymer and/or polyalkylene terephthalate. A process for the preparation of the composition is also disclosed.Type: GrantFiled: May 20, 1992Date of Patent: August 31, 1993Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott, Jochen Schoeps, Horst Peters, Werner Ballas
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Patent number: 5191000Abstract: The flameproofed, non-dripping polyalkylene terephthalate molding compounds according to the invention based on phosphoric acid esters may be used for the production of moldings. The fire behavior of the polyalkylene terephthalate molding compounds is improved by the addition of certain phosphoric acid esters, a surprising reduction in the phosphorus content of the molding compounds being achieved at the same time, particularly in combination with highly heat-resistant thermoplastics.Type: GrantFiled: May 10, 1991Date of Patent: March 2, 1993Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott
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Patent number: 5157065Abstract: Thermoplastic molding compositions containing thermoplastic, aromatic polycarbonates, graft polymers, special phosphorus compounds, antidripping agents and optionally other thermoplasts as well as conventional additives are disclosed. The compositions are characterized by their flame resistance and mechanical properties. Also disclosed is a process for the preparation of the molding compositions.Type: GrantFiled: June 17, 1991Date of Patent: October 20, 1992Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott
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Patent number: 5137953Abstract: The invention relates to thermoplastic molding compounds containing thermoplastic aromatic polycarbonates, thermoplastic copolymers, optionally graft polymers and/or tetrafluoroethylene polymers and/or silicone resins, characterized in that they contain phosphorus compounds corresponding to formula (I) ##STR1## in which R is a --CH.sub.2 --, ##STR2## group and the aromatic radicals may even be alkyl-substituted.Type: GrantFiled: December 4, 1990Date of Patent: August 11, 1992Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott, Jochen Schoeps, Horst Peters, Werner Ballas
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Patent number: 5102931Abstract: The subject of the invention is flameproofed, non-dripping polyamide moulding compounds which contain specific amounts of the following:A) Phosphinic acid esters of polyphenols based on phenolaldehyde/ketone condensates,B) Anti-dripping agents (such as polyfluoroethylene polymers or aramides),C) Zinc borate,D) Thermoplastics with a predominantly aromatic main chain and a high thermal deflection temperature (Vicat B.gtoreq.180.degree. C.),and, if applicable, reinforcing agents and other additives for flameproofing and processing.Type: GrantFiled: July 23, 1990Date of Patent: April 7, 1992Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott, Aziz El-Sayed, Peter-Rolf Muller, Martin Wandel
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Patent number: 5100958Abstract: The invention relates to powder-form polymer mixtures of silicone resins (B) and thermoplastic polymers (A), to their production and to their use for the modification of thermoplatics.Type: GrantFiled: April 24, 1989Date of Patent: March 31, 1992Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott, Ottfried Schlak, Gebhard Wagner
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Patent number: 5047496Abstract: This invention relates to a process for the preparation of high molecular weight aromatic polyethersulphones from diphenols and dihalogenoaryls, characterized in that N-alkylated acid amides are used as solvents and at the same time for the azeotropic removal of the water of reaction.Type: GrantFiled: June 13, 1989Date of Patent: September 10, 1991Assignee: Bayer AktiengesellschaftInventors: Thomas Eckel, Karl Fuhr, Karl-Heinz Ott
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Patent number: 5021488Abstract: The invention relates to flameproofed, non-dripping polyamide moulding compositions which contain certain amounts ofA) phosphinic acid esters of polyphenols based on phenol-aldehyde/ketone condensates,B) antidripping agents (such as polyfluoroethylene polymers or aramides) andC) zinc borateand if appropriate reinforcing agents and other additives for flameproofing and for processing etc.Type: GrantFiled: July 23, 1990Date of Patent: June 4, 1991Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott, Aziz El-Sayed, Peter-Rolf Muller, Martin Wandel
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Patent number: 4988748Abstract: The invention relates to thermoplastic polycarbonate molding compounds containing polycarbonates, copolymers, phosphorus compounds, tetrafluoroethylene polymers and, optionally, graft polymers and also further additives and other thermoplastics and also stabilizers, pigments, flow aids, mold release agents, antistatic agents and/or other flameproffing agents, characterized in that they contain as phosphorus compounds those corresponding to formula (I) ##STR1## and to a process for the production of the polycarbonate molding compounds.Type: GrantFiled: July 10, 1989Date of Patent: January 29, 1991Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott, Hans-Dieter Block, Bernd Urbanneck, Werner Ballas
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Patent number: 4837276Abstract: The invention relates to oligomeric and polymeric esters of difunctional polyphenylene ethers and phosphinic acids, phosphonic acids and phosphoric acid and to their use as a flame-retarding mixing component for other plastics.Type: GrantFiled: December 28, 1987Date of Patent: June 6, 1989Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott
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Patent number: 4632951Abstract: Flameproofing additives for plastics materials consisting of a coating- and carrier material. The coating consists of metal oxides, the carrier of organic compounds, in which halogen is bound to carbon. The combination of the two components of the flameproofing additives has an inhibiting action on the fire and gives plastics materials an effective fire protection according to the invention, for example, V-2 to V-0 according to UL 94.Type: GrantFiled: June 19, 1985Date of Patent: December 30, 1986Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Theobald Eicher
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Patent number: 4528307Abstract: This invention relates to radiation hardenable primers based on prepolymers containing (meth) acryloyl groups and conventional auxiliary agents. The primers are characterized in that they contain organic and/or inorganic fibres having a fibre length distribution curve reaching its maximum in the region of from 50 to 600 .mu.m. These primers are suitable for coating articles which have absorbent surfaces, in particular for the continuous coating of wood-concrete articles such as wood-concrete boards.Type: GrantFiled: September 15, 1983Date of Patent: July 9, 1985Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Hans-Joachim Freier
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Patent number: 4380604Abstract: A radiation-hardenable binder comprising a reaction product ester containing hydroxyl groups and hydroxyalkyl acrylates, which comprises:(A) 1 NCO gram equivalent of a polyisocyanate containing from 2 to 3 isocyanate groups per molecule; (B) from 0.4 to 1.2 OH gram equivalents of an ethylenically-unsaturated partial ester having an OH number of from 80 to 150 of an alkoxylated trimethylol propane having a degree of alkoxylation of 3 to 4.5 and acrylic acid or methacrylic acid or a mixture thereof; and (C) from 0 to 0.6 OH gram equivalents of a hydroxy alkyl acrylate or hydroxy alkyl methacrylate or a mixture thereof containing from 2 to 6 carbon atoms in the alkyl group, wherein the sum total of the OH-gram equivalents of B and C is between 1 and 1.2.Aqueous dispersions containing the binder are used for impregnating, coating, reinforcing or priming textile materials, wood, plastics, non-wovens or leather.Type: GrantFiled: November 30, 1981Date of Patent: April 19, 1983Assignee: Bayer AktiengesellschaftInventors: Karl-Friedrich Neuhaus, Hermann Perrey, Karl Fuhr, Hans-Joachim Freier, Otto Bendszus
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Patent number: 4353980Abstract: An improved abrasion and scratch resistance and resistance to chemicals of photographic materials is achieved by applying a coating composition comprising an irradiation-hardening binder, a multifunctional acrylic monomer, optionally a diiso- or polyisocyanate and a photoinitiator to the photographic material and subsequently irradiating the coating composition with light from the ultra-violet region of the spectrum.Type: GrantFiled: November 25, 1980Date of Patent: October 12, 1982Assignee: AGFA-Gevaert AGInventors: Gunter Helling, Karl Fuhr
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Patent number: 4225695Abstract: A radiation-hardenable binder consisting of a reaction product of:(A) 1 gramme equivalent of NCO of a polyisocyanate containing 2 to 3 isocyanate groups per molecule,(B) 0 to 0.7 gramme equivalents of OH of a polyol containing at least 2 OH-groups per molecule, free from organically combined sulphur,(C) 0.01 to 0.7 gramme equivalents of OH of a hydroxyalkyl acrylate containing 2 to 6 carbon atoms in the alkyl group characterized in that the reaction product additionally has incorporated therein:(D) 0.01 to 0.3 gramme equivalents of OH of a polyol containing thio or dithio groups or thio and dithio groups, with at least 2 OH-groups per molecule,the sum of the OH gramme equivalents B to D is from 1 to 1.2, and the content of organically combined sulphur, derived from the thio and dithio groups, is from 0.01 to 10% by weight, based on the binder.Type: GrantFiled: August 15, 1978Date of Patent: September 30, 1980Assignee: Bayer AktiengesellschaftInventors: Karl-Ernst Schuster, Hans J. Rosenkranz, Hans Rudolph, Karl Fuhr, Bruno Zorn, Harro Traubel
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Patent number: 4179478Abstract: An improved process for the production of lacquer binders from 1,2-polyepoxides having more than one 1,2-epoxide group per molecule, comprising the steps of:(a) reacting the 1,2-polyepoxide with from 0.01 to 0.6 NH-equivalents, based on one epoxide equivalent, of an optionally substituted active amine hydrogen containing ammonium carbonic acid salt;(b) reacting the thus obtained compound with from 0.40 to 0.90 carboxyl equivalent, based on on epoxide equivalent of acrylic acid, methacrylic acid or a mixture thereof; and optionally(c) reacting the compound obtained from step (b) with from 0.40 to 0.2 carboxyl equivalents, based on one epoxide group, or a saturated aliphatic monocarboxylic acid;so that at least 80% of the epoxide groups originally present are reacted.Type: GrantFiled: June 13, 1978Date of Patent: December 18, 1979Assignee: Bayer AktiengesellschaftInventors: Hans J. Rosenkranz, Hans-Joachim Traenckner, Karl Fuhr