Patents by Inventor Martin Blomacher
Martin Blomacher 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: 10961384Abstract: Poly-1,3-dioxepane, poly-1,3-dioxolane, polytetrahydrofurane or mixtures thereof are used in molding materials comprising polyoxymethylene or a copolymer containing a majority of oxymethylene units, for improving the flexural toughness of moldings formed from the molding materials.Type: GrantFiled: May 20, 2015Date of Patent: March 30, 2021Assignee: BASF SEInventors: Bernd-Steffen Von Bernstorff, Marie-Claire Hermant, Martin Blömacher
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Publication number: 20170114216Abstract: Poly-1,3-dioxepane, poly-1,3-dioxolane, polytetrahydrofurane or mixtures thereof are used in molding materials comprising polyoxymethylene or a copolymer containing a majority of oxymethylene units, for improving the flexural toughness of moldings formed from the molding materials.Type: ApplicationFiled: May 20, 2015Publication date: April 27, 2017Applicant: BASF SEInventors: BERND-STEFFEN VON BERNSTORFF, Marie-Claire HERMANT, Martin BLÖMACHER
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Patent number: 9403212Abstract: Process for producing a shaped metallic body from a thermoplastic composition by injection molding or extrusion to form a shaped part, removal of the binder and sintering, wherein a thermoplastic composition composed of a metal powder and a polymer mixture B1) and B2) based on a polyoxymethylene homopolymer or copolymer B1) is used as binder and to remove the binder a) the shaped part is treated with a solvent which extracts the binder component B2) from the shaped part and in which the binder component B1) is insoluble, b) the solvent is then removed from the shaped part by drying and c) the shaped part is treated thermally at from 140 to 200° C. in an oxygen-comprising atmosphere, as a result of which the binder component B1) is removed from the shaped part; and also a shaped metallic body which can be obtained in this way.Type: GrantFiled: May 16, 2012Date of Patent: August 2, 2016Assignee: BASF SEInventors: Johan ter Maat, Martin Blömacher, Hans Wohlfromm
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Patent number: 9162927Abstract: A process for producing a metallic or ceramic shaped body from a thermoplastic material comprising A) 40 to 65% inorganic sinterable powder A B) 35 to 60% binder B1) 50 to 95% polyoxymethylene homo- or copolymers; B2) 5 to 50% of a polymer dissolved or dispersed in B1) with a particle size of less than 1 ?m, and C) 0 to 5% by volume of a dispersing aid, by injection molding or extrusion to give a green body, removing the binder and sintering, which comprises removing the binder by a) treating the molding with a solvent which extracts the binder component B2) from the molding and in which the binder component B1) is insoluble, b) removing the solvent from the molding by drying, and c) treating the molding in an acid-containing atmosphere is described.Type: GrantFiled: March 14, 2012Date of Patent: October 20, 2015Assignee: BASF SEInventors: Johan ter Maat, Martin Blömacher, Hans Wohlfromm
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Patent number: 8674018Abstract: The invention relates to binders for pulverulent metals, metal alloys or ceramics based on polyacetals, polyethers and polyesters, to thermoplastic compositions comprising these binders for the production of metallic or ceramic moldings, to the use thereof and to processes for production of moldings therefrom.Type: GrantFiled: September 7, 2012Date of Patent: March 18, 2014Assignee: BASF SEInventors: Johan ter Maat, Martin Blömacher, Hans Wohlfromm, Mario Nohe, Robert Loos
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Publication number: 20130062820Abstract: The invention relates to binders for pulverulent metals, metal alloys or ceramics based on polyacetals, polyethers and polyesters, to thermoplastic compositions comprising these binders for the production of metallic or ceramic moldings, to the use thereof and to processes for production of moldings therefrom.Type: ApplicationFiled: September 7, 2012Publication date: March 14, 2013Applicant: BASF SEInventors: Johan ter Maat, Martin Blömacher, Hans Wohlfromm, Mario Nohe, Robert Loos
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Publication number: 20120294749Abstract: Process for producing a shaped metallic body from a thermoplastic composition by injection molding or extrusion to form a shaped part, removal of the binder and sintering, wherein a thermoplastic composition composed of a metal powder and a polymer mixture B1) and B2) based on a polyoxymethylene homopolymer or copolymer B1) is used as binder and to remove the binder a) the shaped part is treated with a solvent which extracts the binder component B2) from the shaped part and in which the binder component B1) is insoluble, b) the solvent is then removed from the shaped part by drying and c) the shaped part is treated thermally at from 140 to 200° C. in an oxygen-comprising atmosphere, as a result of which the binder component B1) is removed from the shaped part; and also a shaped metallic body which can be obtained in this way.Type: ApplicationFiled: May 16, 2012Publication date: November 22, 2012Applicant: BASF SEInventors: Johan ter Maat, Martin Blömacher, Hans Wohlfromm
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Publication number: 20120235330Abstract: A process for producing a metallic or ceramic shaped body from a thermoplastic material comprising A) 40 to 65% inorganic sinterable powder A B) 35 to 60% binder B1) 50 to 95% polyoxymethylene homo- or copolymers; B2) 5 to 50% of a polymer dissolved or dispersed in B1) with a particle size of less than 1 ?m, and C) 0 to 5% by volume of a dispersing aid, by injection molding or extrusion to give a green body, removing the binder and sintering, which comprises removing the binder by a) treating the molding with a solvent which extracts the binder component B2) from the molding and in which the binder component B1) is insoluble, b) removing the solvent from the molding by drying, and c) treating the molding in an acid-containing atmosphere is described.Type: ApplicationFiled: March 14, 2012Publication date: September 20, 2012Applicant: BASF SEInventors: Johan ter Maat, Martin Blömacher, Hans Wohlfromm
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Publication number: 20090288739Abstract: The present invention relates to binders for pulverulent metals or pulverulent metal alloys, thermoplastic compositions comprising these binders for producing shaped metallic bodies, a process for producing them, their use and a process for producing shaped bodies therefrom.Type: ApplicationFiled: July 5, 2007Publication date: November 26, 2009Applicant: BASF SEInventors: Hans Wohlfromm, Jens Assmann, Johan Herman Hendrik ter Maat, Martin Blömacher
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Publication number: 20080230964Abstract: The present invention relates to a process for the production of sintered three-dimensional strips of shaped bodies and for the production of the shaped bodies from a pulverulent, inorganic material, to sintered three-dimensional shaped bodies and to the use of the sintered, three-dimensional shaped bodies as shot pellets, munitions, angling weights, for balancing tires, as oscillating weight in clocks, for radiation screening, as a balancing weight in drive motors and engines, for the production of sports equipment or as a catalyst support.Type: ApplicationFiled: August 29, 2006Publication date: September 25, 2008Applicant: BASF SEInventors: Hans Wohlfromm, Johan Herman Hendrik ter Maat, Martin Blomacher
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Publication number: 20080199822Abstract: The apparatus for the continuous catalytic removal of binder from metallic and/or ceramic shaped bodies produced by powder injection molding, which comprises a binder removal furnace through which the shaped bodies pass in a transport direction and are brought to a suitable process temperature, a feed facility for introduction of a process gas which is required for binder removal and comprises a reactant, at least one facility for the introduction of a protective gas into a reaction space of the binder removal furnace and a flare to burn the gaseous reaction products obtained in binder removal, wherein one or more devices which lead to a flow of the process gas directed transversely to the transport direction in the apparatus are present.Type: ApplicationFiled: June 7, 2006Publication date: August 21, 2008Applicant: BASF AktiengesellschaftInventors: Martin Blomacher, Johan Herman Hendrik ter Maat, Hans Wohlfromm, Tsung-Chieh Cheng, Franz-Dieter Martischius, Arnd Thom
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Publication number: 20060099103Abstract: A novel metal injection molding material contains a) from 40 to 70% by volume of metal powder, including at least 50% by weight, based on the total amount of metal, of an iron-containing powder, at least 90% by weight, based on the amount of this iron-containing powder, of the particles of which have an effective diameter of at least 40 micrometers, b) from 30 to 60% by volume of a thermoplastic binder and c) from 0 to 5% by volume of a dispersant and/or other assistants. This injection molding material is shaped by injection molding, the injection molded parts are freed from the binder and said parts freed from the binder are sintered.Type: ApplicationFiled: October 21, 2003Publication date: May 11, 2006Applicant: BASF AKTIENGESELLSCHAFTInventors: Hans Wohlfromm, Raimund Felder, Johan Maat, Martin Blomacher
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Patent number: 6939488Abstract: A binder B for inorganic powders comprises a mixture of b1 from 80 to 99.5% by weight of a polyoxymethlene homopolymer or copolymer B1 and b2 from 0.5 to 20% by weight of a polymer system B2 which is not miscible with B1 and comprises b21 from 5 to 100% by weight of polytetrahydrofuran B21 and b22 from 0 to 95% by weight of at least one polymer B22 of C2-8-olefins, vinylaromatic monomers, vinyl esters of aliphatic C1-8-carboxylic acids, vinyl C1-8-alkyl ethers or C1-12-alkyl (meth)acrylates.Type: GrantFiled: April 19, 2001Date of Patent: September 6, 2005Assignee: BASF AktiengesellschaftInventors: Martin Blömacher, Dieter Weinand, Hans Wohlfromm, Johan Herman Hendrik ter Maat
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Publication number: 20050182176Abstract: At least one first inorganic molding (1) produced from a powder injection molding material by injection molding is permanently bonded to at least one second inorganic molding (2) produced by a method other than injection molding by a method comprising the method steps: a) injection molding the first inorganic molding (1) from binder-containing powder injection molding materials, b) removing binder from the first inorganic molding (1) and c) carrying out a sinter process with the first and second inorganic moldings (1, 2) fitted together, the at least one first inorganic molding (1) and the at least one second inorganic molding (2) being fitted together before step b) or before step c).Type: ApplicationFiled: February 11, 2005Publication date: August 18, 2005Inventors: Hans Wohlfromm, Arnd Thom, Johan Hendrik ter Maat, Martin Blomacher
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Patent number: 5802437Abstract: Metallic shaped bodies are produced from an injection-molding composition comprising at least one carbonyl metal powder and at least one element powder of metals from the group Cr, Mn, V, Si, Ti or of other metals which are at least as oxidation-sensitive by shaping, removing the binder and sintering. In place of an element powder, it is also possible to use an alloy powder comprising the corresponding metals.Type: GrantFiled: September 28, 1995Date of Patent: September 1, 1998Assignee: BASF AktiengesellschaftInventors: Hans Wohlfromm, Dieter Weinand, Martin Blomacher, Manfred Schwarz, Eva-Maria Langer