Patents by Inventor Alfred Steinmann
Alfred Steinmann 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: 7807757Abstract: This invention relates to a process for stabilising and at the same time phase compatibilising plastics or plastic compositions by incorporating polymeric compounds obtainable by reacting a compound selected from the group consisting of the sterically hindered phenols, sterically hindered amines, lactones, sulfides, phosphites, benzotriazoles, benzophenones and 2-(2-hydroxyphenyl)-1,3,5-triazines, which compounds contain at least one reactive group, with a compatibilisator.Type: GrantFiled: October 17, 2007Date of Patent: October 5, 2010Assignee: Ciba Specialty Chemicals Corp.Inventors: Rudolf Pfaendner, Heinz Herbst, Kurt Hoffmann, Samuel Evans, Alfred Steinmann
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Publication number: 20080051521Abstract: This invention relates to a process for stabilising and at the same time phase compatibilising plastics or plastic compositions by incorporating polymeric compounds obtainable by reacting a compound selected from the group consisting of the sterically hindered phenols, sterically hindered amines, lactones, sulfides, phosphites, benzotriazoles, benzophenones and 2-(2-hydroxyphenyl)-1,3,5-triazines, which compounds contain at least one reactive group, with a compatibilisator.Type: ApplicationFiled: October 17, 2007Publication date: February 28, 2008Inventors: Rudolf PFAENDNER, Heinz HERBST, Kurt HOFFMANN, Samuel EVANS, Alfred STEINMANN
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Patent number: 7300978Abstract: This invention relates to a process for stabilising and at the same time phase compatibilising plastics or plastic compositions by incorporating polymeric compounds obtainable by reacting a compound selected from the group consisting of the sterically hindered phenols, sterically hindered amines, lactones, sulfides, phosphites, benzotriazoles, benzophenones and 2-(2-hydroxyphenyl)-1,3,5-triazines, which compounds contain at least one reactive group, with a compatibilisator.Type: GrantFiled: February 23, 2004Date of Patent: November 27, 2007Assignee: Ciba Specialty Chemicals CorporationInventors: Rudolf Pfaendner, Heinz Herbst, Kurt Hoffmann, Samuel Evans, Alfred Steinmann
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Publication number: 20060266451Abstract: The proposed propellant powder exhibits a temperature-independent burning behavior and high ballistic stability. The production process starts with a perforated bulk powder grain, which is processed inside a mixing apparatus with a solid material, a plug-stabilizing moderator or deterrent (if necessary also a radical initiator) and a low-viscous liquid. With a minimum amount of solid material, moderator or deterrent and liquid and because of the continuous mixing, the form function is influenced in such a way that the gas-formation rate is practically independent of the propellant powder temperature. As a result, the muzzle energy at the normal temperature and, above all, at a low deployment temperature can be increased markedly as compared to that of a standard propellant powder.Type: ApplicationFiled: February 22, 2006Publication date: November 30, 2006Applicants: Nitrochemie Wimmis AG, Nitrochemie Aschau GmbHInventors: Markus Fahrni, Beat Vogelsanger, Alfred Steinmann, Bruno Ossola, Ulrike Jeck-Prosch, Alexander Huber, Kurt Ryf
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Publication number: 20060267252Abstract: A process for forming a three-dimensional article by stereolithography, said process comprising the steps: 1) coating a thin layer of a liquid radiation-curable composition onto a surface said composition including at least one filler comprising silica-type nano-particles suspended in the radiation-curable composition; 2) exposing said thin layer imagewise to actinic radiation to form an imaged cross-section, wherein the radiation is of sufficient intensity to cause substantial curing of the thin layer in the exposed areas; 3) coating a thin layer of the composition onto the previously exposed imaged cross-section; 4) exposing said thin layer from step (3) imagewise to actinic radiation to form an additional imaged cross-section, wherein the radiation is of sufficient intensity to cause substantial curing of the thin layer in the exposed areas and to cause adhesion to the previously exposed imaged cross-section; 5) repeating steps (3) and (4) a sufficient number of times in order to build up the three-dimensiType: ApplicationFiled: July 17, 2006Publication date: November 30, 2006Inventors: Bettina Steinmann, Alfred Steinmann
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Patent number: 7051658Abstract: The proposed propellant powder exhibits a temperature-independent burning behavior and high ballistic stability. The production process starts with a perforated bulk powder grain, which is processed inside a mixing apparatus with a solid material, a plug-stabilizing moderator or deterrent (if necessary also a radical initiator) and a low-viscous liquid. With a minimum amount of solid material, moderator or deterrent and liquid and because of the continuous mixing, the form function is influenced in such a way that the gas-formation rate is practically independent of the propellant powder temperature. As a result, the muzzle energy at the normal temperature and, above all, at a low deployment temperature can be increased markedly as compared to that of a standard propellant powder.Type: GrantFiled: March 13, 2002Date of Patent: May 30, 2006Assignees: Nitrochemie Wimmis AG, Nitrochemie Aschau GmbHInventors: Markus Fahrni, Beat Vogelsanger, Alfred Steinmann, Bruno Ossola, Ulrike Jeck-Prosch, Alexander Huber, Kurt Ryf
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Publication number: 20050040562Abstract: A process for forming a three-dimensional article by stereolithography, said process comprising the steps: 1) coating a thin layer of a liquid radiation-curable composition onto a surface said composition including at least one filler comprising silica-type nano-particles suspended in the radiation-curable composition: 2) exposing said thin layer imagewise to actinic radiation to form an imaged cross-section, wherein the radiation is of sufficient intensity to cause substantial curing of the thin layer in the exposed areas; 3) coating a thin layer of the composition onto the previously exposed imaged cross-section; 4) exposing said thin layer from step (3) imagewise to actinic radiation to form an additional imaged cross-section, wherein the radiation is of sufficient intensity to cause substantial curing of the thin layer in the exposed areas and to cause adhesion to the previously exposed imaged cross-section; 5) repeating steps (3) and (4) a sufficient number of times in order to build up the three-dimensiType: ApplicationFiled: August 19, 2003Publication date: February 24, 2005Inventors: Bettina Steinmann, Alfred Steinmann
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Publication number: 20040170923Abstract: A liquid colored radiation-curable composition that comprises:Type: ApplicationFiled: February 27, 2003Publication date: September 2, 2004Applicant: 3D Systems, Inc.Inventors: Alfred Steinmann, Bettina Steinmann, Manfred Hofmann
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Publication number: 20040167291Abstract: This invention relates to a process for stabilising and at the same time phase compatibilising plastics or plastic compositions by incorporating polymeric compounds obtainable by reacting a compound selected from the group consisting of the sterically hindered phenols, sterically hindered amines, lactones, sulfides, phosphites, benzotriazoles, benzophenones and 2-(2-hydroxyphenyl)-1,3,5-triazines, which compounds contain at least one reactive group, with a compatibilisator.Type: ApplicationFiled: February 23, 2004Publication date: August 26, 2004Inventors: Rudolf Pfaendner, Heinz Herbst, Kurt Hoffmann, Samuel Evans, Alfred Steinmann
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Patent number: 6583245Abstract: The present invention relates to a polymerizable composition, comprising a) at least one compound of formula (I) (RG)—A—(Stab) (I), wherein (Stab) is a light stabilizer radical selected from the group consisting of sterically hindered amines, hydroxyphenyl-s-triazines, hydroxyphenyl-benzotriazols and o-hydroxy-benzophenones; A is a spacer group or a direct bond; and (RG) is a group containing at least one ethylenically unsaturated functional group; and either b1) a compound of formula (II) Y—X (II), wherein X represents a group having at least one carbon atom and is such that the free radical derived from X is capable of initiating polymerization and Y represents a group being such that the free radical Y· derived from it forms a stable free radical; or b2) a stable free radical Y· and a free radical source from which a radical is formed capable of initiating polymerization, or b3) a compound of formula (III) and a catType: GrantFiled: June 21, 2001Date of Patent: June 24, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Alfred Steinmann, Michael Roth, Werner Stauffer, Peter Nesvadba, Andreas Mühlebach
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Publication number: 20020134269Abstract: The proposed propellant powder exhibits a temperature-independent burning behavior and high ballistic stability. The production process starts with a perforated bulk powder grain, which is processed inside a mixing apparatus with a solid material, a plug-stabilizing moderator or deterrent (if necessary also a radical initiator) and a low-viscous liquid. With a minimum amount of solid material, moderator or deterrent and liquid and because of the continuous mixing, the form function is influenced in such a way that the gas-formation rate is practically independent of the propellant powder temperature. As a result, the muzzle energy at the normal temperature and, above all, at a low deployment temperature can be increased markedly as compared to that of a standard propellant powder.Type: ApplicationFiled: March 13, 2002Publication date: September 26, 2002Inventors: Markus Fahrni, Beat Vogelsanger, Alfred Steinmann, Bruno Ossola, Ulrike Jeck-Prosch, Alexander Huber, Kurt Ryf
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Patent number: 6455706Abstract: A polymerizable composition, comprising a) at least one ethylenically unsaturated monomer or oligomer, and b) an initiator compound of formula (I) wherein n is 0 or 1. The compounds of formula (I) are prepared from a free radical and a compound of formula R10NO or Further aspects of the present invention are a process for polymerizing ethylenically unsaturated monomers, novel initiator compounds and their use for polymerization, intermediate compounds and also the polymer or copolymer produced by this process.Type: GrantFiled: April 9, 2001Date of Patent: September 24, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Peter Nesvadba, Andreas Kramer, Alfred Steinmann, Werner Stauffer
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Publication number: 20020128406Abstract: A process is described for polymerizing ethylenically unsaturated sterically hindered amines of the polyalkylpiperidine type (HALS) by means of metallocene catalyst, novel polymers resulting therefrom and novel unsaturated HALS. The novel monomeric or copolymeric compounds can be employed advantageously for stabilizing organic material against the damaging effect of light, oxygen and/or heat.Type: ApplicationFiled: June 16, 1999Publication date: September 12, 2002Inventors: CARL-ERIC MAGNUS WILEN, JAN ANDERS HARRY NASMAN, ALFRED STEINMANN
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Publication number: 20020123577Abstract: This invention relates to a process for stabilizing and at the same time phase compatibilising plastics or plastic compositions by incorporating polymeric compounds obtainable by reacting a compound selected from the group consisting of the sterically hindered phenols, sterically hindered amines, lactones, sulfides, phosphites, benzotriazoles, benzophenones and 2-(2-hydroxyphenyl)-1,3,5-triazines, which compounds contain at least one reactive group, with a compatibilisator.Type: ApplicationFiled: November 9, 2001Publication date: September 5, 2002Inventors: Rudolf Pfaendner, Heinz Herbst, Kurt Hoffmann, Samuel Evans, Alfred Steinmann
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Patent number: 6362278Abstract: This invention relates to a process for stabilizing and at the same time phase compatibilising plastics or plastic compositions by incorporating polymeric compounds obtainable by reacting a compound selected from the group consisting of the sterically hindered phenols, sterically hindered amines, lactones, sulfides, phosphites, benzotriazoles, benzophenones and 2-(2-hydroxyphenyl)-1,3,5-triazines, which compounds contain at least one reactive group, with a compatibilisator.Type: GrantFiled: April 21, 1999Date of Patent: March 26, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Rudolf Pfaendner, Heinz Herbst, Kurt Hoffmann, Samuel Evans, Alfred Steinmann
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Publication number: 20010039315Abstract: A polymerizable composition, comprisingType: ApplicationFiled: April 9, 2001Publication date: November 8, 2001Inventors: Peter Nesvadba, Andreas Kramer, Alfred Steinmann, Werner Stauffer
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Publication number: 20010008928Abstract: A polymerizable composition, comprisingType: ApplicationFiled: July 13, 1998Publication date: July 19, 2001Inventors: PETER NESVADBA, ANDREAS KRAMER, ALFRED STEINMANN, WERNER STAUFFER
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Patent number: 6262206Abstract: A polymerizabie composition, comprising a) at least one ethylenically unsaturated monomer or oligomer, and b) an initiator compound of formula (I) wherein n is O or 1. The compounds of formula (I) are prepared from a free radical and a compound of formula R10NO or Further aspects of the present invention are a process for polymerizing ethylenically unsaturated monomers, novel initiator compounds and their use for polymerization, intermediate compounds and also the polymer or copolymer produced by this process.Type: GrantFiled: July 13, 1998Date of Patent: July 17, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Peter Nesvadba, Andreas Kramer, Alfred Steinmann, Werner Stauffer
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Patent number: 6028129Abstract: The invention relates to a process for increasing the molecular weight of polycondensates and at the same time stabilizing them, essentially without crosslinking, which comprises heating a polyamide, a polyester, a polycarbonate or a copolymer or blend of these polymers with addition of at least one diepoxide comprising terminal epoxide groups and as a further structural element a tetramethylpiperidine radical located centrally between the epoxide groups to a temperature which is above the melting point of the polymer in the case of crystalline polycondensates or above the glass point in the case of amorphous polycondensates. The invention additionally relates to mixtures comprising the corresponding diepoxides, to their use, and to polycondensates prepared from them.Type: GrantFiled: January 20, 1999Date of Patent: February 22, 2000Assignee: Ciba Specialty Chemicals CorporationInventors: Rudolf Pfaendner, Alfred Steinmann, Heinz Herbst, Kurt Hoffmann
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Patent number: 6001905Abstract: A description is given of compounds of formula 1 ##STR1## and of compounds of formula 2 ##STR2## wherein X, Y and Z and the radicals R.sup.1 and also m and n have the meanings claimed in claim 1.The cited compounds are advantageously used e.g. for stabilizing organic material against the damaging effect of light, oxygen and/or heat.Type: GrantFiled: April 20, 1998Date of Patent: December 14, 1999Assignee: Ciba Specialty Chemicals CorporationInventor: Alfred Steinmann