Patents by Inventor Ernst Mack
Ernst Mack 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: 7732559Abstract: A method of preparing a halophthalic acid is disclosed which comprises the steps of contacting in a liquid phase reaction mixture at least one halogen-substituted ortho-xylene with oxygen and acetic acid at a temperature in a range between about 120° C. and about 220° C. in the presence of a catalyst system yielding a product mixture comprising less than 10 percent halogen-substituted ortho-xylene starting material, a halophthalic acid product, and less than about 10,000 ppm halobenzoic acid and less than about 1000 ppm halophthalide by-products based on a total amount of halophthalic acid present in the product mixture. In addition methods for the preparation of halophthalic anhydride, and recovery of high purity acetic acid from an aqueous acetic acid stream comprising HCl, which is generated during the preparation of the halophthalic acid are also disclosed.Type: GrantFiled: July 18, 2008Date of Patent: June 8, 2010Assignee: Sabic Innovative Plastics IP B.V.Inventors: Robert Edgar Colborn, David Bruce Hall, Peter Alois Koch, Bernd Volker Demuth, Thomas Wessel, Karl Ernst Mack, Prashant Anil Tatake, Uptal Mahendra Vakil, Shyamal Bhaskar Gondkar, John Edward Pace, Kwang Woong Won
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Publication number: 20080275211Abstract: A method of preparing a halophthalic acid is disclosed which comprises the steps of contacting in a liquid phase reaction mixture at least one halogen-substituted ortho-xylene with oxygen and acetic acid at a temperature in a range between about 120° C. and about 220° C. in the presence of a catalyst system yielding a product mixture comprising less than 10 percent halogen-substituted ortho-xylene starting material, a halophthalic acid product, and less than about 10,000 ppm halobenzoic acid and less than about 1000 ppm halophthalide by-products based on a total amount of halophthalic acid present in the product mixture. In addition methods for the preparation of halophthalic anhydride, and recovery of high purity acetic acid from an aqueous acetic acid stream comprising HCl, which is generated during the preparation of the halophthalic acid are also disclosed.Type: ApplicationFiled: July 18, 2008Publication date: November 6, 2008Inventors: Robert Edgar Colborn, David Bruce Hall, Peter Alois Koch, Bernd Volker Demuth, Thomas Wessel, Karl Ernst Mack, Prashant Anil Tatake, Utpal Mahendra Vakil, Shyamal Bhaskar Gondkar, John Edward Pace, Kwang Woong Won
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Patent number: 7098371Abstract: Method of hydrodechlorinating nuclear-chlorinated o-xylenes and recovering o-xylene, forming hydrogen chloride, the nuclear-chlorinated o-xylenes being hydrogenated in the gas phase at a noble-metal-containing catalyst at a temperature in the range from 220 to 360° C. The catalyst preferably comprises palladium or platinum, in particular supported palladium or platinum. The nuclear-chlorinated o-xylenes can be used individually or as mixtures.Type: GrantFiled: September 10, 2003Date of Patent: August 29, 2006Assignee: Clarient GmbHInventors: Karl-Ernst Mack, Daniel Decker
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Patent number: 6930216Abstract: A method for the nuclear chlorination of ortho-xylene using a chlorinating agent in the presence of at least one Friedel-Crafts catalyst and chloro-substituted 2,8-dimethylphenoxathiin as co-catalyst.Type: GrantFiled: September 10, 2003Date of Patent: August 16, 2005Assignee: Clariant GmbHInventors: Karl-Ernst Mack, Hans-Jürgen Leitung, Daniel Decker
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Publication number: 20040054245Abstract: Method of hydrodechlorinating nuclear-chlorinated o-xylenes and recovering o-xylene, forming hydrogen chloride, the nuclear-chlorinated o-xylenes being hydrogenated in the gas phase at a noble-metal-containing catalyst at a temperature in the range from 220 to 360° C. The catalyst preferably comprises palladium or platinum, in particular supported palladium or platinum. The nuclear-chlorinated o-xylenes can be used individually or as mixtures.Type: ApplicationFiled: September 10, 2003Publication date: March 18, 2004Applicant: Clariant GmbHInventors: Karl-Ernst Mack, Daniel Decker
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Publication number: 20040054239Abstract: A method for the nuclear chlorination of ortho-xylene using a chlorinating agent in the presence of at least one Friedel-Crafts catalyst and chloro-substituted 2,8-dimethylphenoxathiin as co-catalyst.Type: ApplicationFiled: September 10, 2003Publication date: March 18, 2004Applicant: Clariant GmbHInventors: Karl-Ernst Mack, Hans-Jurgen Leitung, Daniel Decker
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Patent number: 5723647Abstract: N-(4-Bromo-2-fluorobenzyl)carbamates and a process for their preparationThe invention relates to N-(4-bromo-2-fluorobenzyl)carbamates of the formula (I), ##STR1## where R is (C.sub.1 -C.sub.12)alkyl, benzyl or phenyl, where the benzyl and phenyl radicals can also be substituted by (C.sub.1 -C.sub.3)alkyl or (C.sub.1 -C.sub.3)alkoxy, and to a process for preparing these compounds.Type: GrantFiled: September 20, 1996Date of Patent: March 3, 1998Assignee: Hoechst AktiengesellschaftInventors: Norbert Beye, Karl-Ernst Mack
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Patent number: 4659555Abstract: The invention relates to a process for the preparation of basic copper carbonate by reacting copper salts with alkali carbonate in aqueous solution at elevated temperatures and with stirring and subsequently isolating the copper carbonate. In this process, a waste solution from copper etching processes which contains hydrochloric acid and sodium chloride, is stirred into a 5 to 15 weight percent solution of alkali carbonate heated to 40.degree. to 70.degree. C., the pH of the solution not being allowed to fall below 6.5, and the precipitated basic copper carbonate is separated from the aqueous solution in a known manner. A light green, basic copper carbonate is obtained, which is free of copper chloride and copper oxide.Type: GrantFiled: April 26, 1985Date of Patent: April 21, 1987Assignee: Th. Goldschmidt AG 03Inventors: Werner Gottfried, Ernst Mack, Lothar Witzke
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Patent number: 4654931Abstract: A hinge device for tilting windows, particularly tilting windows for installation in an inclined roof, includes two hinge parts adapted to be secured to the frame of the window and its sash, respectively, the hinge parts having respective base plates, a guide on one of the base plates, the guide forming a part-circular guide channel, a slide member on the other of the base plates, the slide member corresponding in shape to the guide channel and defining a tilting axis spaced from the plane of the window, a plate element forming the concave guide on one side of the part-circular guide channel, the plate element being spaced from the base plate and secured thereto by rivets or similar pins to the base plate of the hinge part, an arched blade spring arranged in the space between the plate element and the base plate, the blade spring having curved end portions gripping partly around and held in place by two of the rivets securing the plate element, a guide pin on the hinge part having the slide member, the guideType: GrantFiled: July 2, 1985Date of Patent: April 7, 1987Assignee: V Kann Rasmussen Holding A/SInventors: Siegfried Sonneborn, Manfred Handel, Ernst Mack, Carl F. Gerstrom, Peter Sorensen
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Patent number: 4621466Abstract: The invention relates to a flashing frame for roof windows to be installed adjacent to each other with edges facing each other in the installed position with a connecting flange of its upper flashing members extending beneath the roofing and, if need be, with its lower flashing members and required intermediary flashing members, obliquely outwardly bent connecting webs and each with a connecting bar with supporting webs which rearwardly engage the connecting webs being adjacent to the width of the installation distance and are obliquely bent inwardly on both sides, and at least one inner projection which engages between the facing corner edges of the connecting webs in the installed position, thus maintaining these corner edges at the installation distance.Type: GrantFiled: May 30, 1985Date of Patent: November 11, 1986Assignee: Rasmussen Holding S/AInventors: Siegfried Sonneborn, Manfred Handel, Ernst Mack
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Patent number: 4543753Abstract: The invention relates to a flashing frame for roof windows to be installed adjacent to each other with edges facing each other in the installed position with a connecting flange of its upper flashing members extending beneath the roofing and, if need be, with its lower flashing members and required intermediary flashing members, obliquely outwardly bent connecting webs and each with a connecting bar with supporting ribs which rearwardly engage the connecting webs being adjacent to the width of the installation distance and are obliquely bent inwardly on both sides, and at least one inner projection which engages between the facing corner edges of the connecting webs in the installed position, thus maintaining these corner edges at the installation distance.Type: GrantFiled: February 22, 1983Date of Patent: October 1, 1985Assignee: Rasmussen Holding A/SInventors: Siegfried Sonneborn, Manfred Handel, Ernst Mack