Patents by Inventor Christoph KLAUS-NIETROST
Christoph KLAUS-NIETROST 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: 11976417Abstract: A recycled cellulose raw material and a method for recycling a cellulose raw material from blended textile waste with high reliability and yielding high raw material quality is shown, the method comprising the steps in the given order: providing the blended textile waste containing at least one cellulose component and at least one synthetic polymer component, treating the blended textile waste in a non-oxidizing aqueous treatment medium in order to degrade the at least one synthetic polymer component, whereby the treatment is carried out at a temperature between 100° C. and 200° C., and obtaining the recycled cellulose raw material from the treated blended textile waste.Type: GrantFiled: October 24, 2019Date of Patent: May 7, 2024Assignee: LENZING AKTIENGESELLSCHAFTInventors: Richard Herchl, Christoph Klaus-Nietrost, Christian Weilach
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Patent number: 11952714Abstract: A process (1, 101, 201) for separating a fibrous target component (21) from textile waste (2, 5) is shown, said textile waste (2, 5) containing the target component (21) and at least one ancillary component (22), whereby the target component (21) consists of water-swellable textile fibers (51) with a density higher than the density of water, the process (1, 101, 201) comprising the steps: a) dispersing the comminuted textile waste (5) in an aqueous solution (7) to obtain a suspension (8) containing the textile waste (5), and b) separating the dispersed textile waste (5) into a high-density target fraction (81) comprising the target component (21), and a low-density residual fraction (82) comprising the at least one ancillary component (22), according to the respective density of said components (21, 22).Type: GrantFiled: January 14, 2019Date of Patent: April 9, 2024Assignee: LENZING AKTIENGESELLSCHAFTInventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
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Patent number: 11828005Abstract: A method of producing a chemical pulp from a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and producing regenerated molded bodies from the chemical pulp based on the cellulosic fibers after mechanically separating and chemically separating.Type: GrantFiled: December 2, 2022Date of Patent: November 28, 2023Assignee: Lenzing AktiengesellschaftInventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
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Publication number: 20230125354Abstract: What is shown is a method for the recovery of raw materials from blended textile wastes, which includes the following steps in the given order: a) providing blended textile waste that includes at least a cellulose component and at least a polyester component, b) treating the blended textile waste in an aqueous treatment solution in order to depolymerize the polyester component and dissolve it in the treatment solution, c) separating the cellulose component from the treatment solution and recovering a cellulose raw material, d) filtering the treatment solution in order to remove foreign substances, particularly dyes and metal ions, from the treatment solution, and e) precipitating terephthalic acid from the treatment solution, separating the precipitated terephthalic acid, and recovering a terephthalic-acid-including polyester raw material.Type: ApplicationFiled: December 3, 2020Publication date: April 27, 2023Inventors: Richard Herchl, Christoph Klaus-Nietrost, Sabrina Theis, Christian Weilach
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Publication number: 20230095901Abstract: A regenerated cellulosic molded body of cellulose and at least a part of at least one foreign matter, and is produced by supplying a starting material which comprises cellulose and at least one foreign matter, transferring at least a part of the starting material with at least a part of the at least one foreign matter into a spinning mass which additionally contains a solvent for solving at least a part of the cellulose of the starting material in the solvent, and extruding the spinning mass to the molded body, and subsequently precipitating in a spinning bath.Type: ApplicationFiled: December 2, 2022Publication date: March 30, 2023Inventors: Christoph KLAUS-NIETROST, Richard HERCHL, Christian WEILACH
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Publication number: 20230096086Abstract: A method of producing a chemical pulp from a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and producing regenerated molded bodies from the chemical pulp based on the cellulosic fibers after mechanically separating and chemically separating.Type: ApplicationFiled: December 2, 2022Publication date: March 30, 2023Inventors: Christoph KLAUS-NIETROST, Richard HERCHL, Christian WEILACH
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Publication number: 20230025524Abstract: The invention relates to a method for the treatment and utilization of waste liquor containing at least polyester degradation products and originating from an alkaline pulping process for the extraction of cellulose raw material from blended textile waste which contains at least a cellulose component and a polyester component. In order to make the method environmentally friendlier and more resource-efficient, it is proposed that the method comprises the following steps: the evaporation of water from the waste liquor in order to precipitate the polyester degradation product from the waste liquor and to obtain a two-phase mixture having an aqueous phase and a solid phase including the polyester degradation product, b) the separation of the solid phase from the liquid phase, and c) the thermal/energetic utilization of the solid phase.Type: ApplicationFiled: December 3, 2020Publication date: January 26, 2023Inventors: Richard Herchl, Christoph Klaus-Nietrost, Sabrina Theis, Christian Weilach
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Patent number: 11519100Abstract: Method of manufacturing a cellulose-regenerated-molded body, wherein the method comprises supplying a starting material which is manufactured by a lyocell-method and which comprises cellulose, which is manufactured by solving a cellulose source in a solvent for manufacturing a spinning mass, by extruding the spinning mass and by subsequently precipitating in a spinning bath, solving the starting material which comprises cellulose, in a solvent for manufacturing a spinning mass, and extruding, and subsequently precipitating the spinning mass in a spinning bath, wherein thereby the molded body is obtained.Type: GrantFiled: January 14, 2019Date of Patent: December 6, 2022Assignee: LENZING AKTIENGESELLSCHAFTInventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach, Christian Sperger
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Patent number: 11519101Abstract: Method of manufacturing a regenerated cellulosic molded body, wherein the method comprises supplying a starting material which comprises cellulose and at least one foreign matter, transferring at least a part of the starting material with at least a part of the at least one foreign matter into a spinning mass which additionally contains a solvent for solving at least a part of the cellulose of the starting material in the solvent, and extruding the spinning mass to the molded body, and subsequently precipitating in a spinning bath, wherein thereby the molded body is obtained, wherein the molded body comprises cellulose and at least a part of the at least one foreign matter.Type: GrantFiled: January 14, 2019Date of Patent: December 6, 2022Assignee: LENZING AKTIENGESELLSCHAFTInventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
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Patent number: 11519104Abstract: Method of recycling a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and the molded bodies are generated based on the cellulosic fibers after mechanically separating and chemically separating.Type: GrantFiled: January 14, 2019Date of Patent: December 6, 2022Assignee: LENZING AKTIENGESELLSCHAFTInventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
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Patent number: 11321658Abstract: Method of identifying a product which comprises cellulose, wherein in the method a data set is determined which is indicative for multiple constituents of the product or a preform of the product, and the data set which is correlated with the product or the preform is stored in a database.Type: GrantFiled: January 14, 2019Date of Patent: May 3, 2022Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
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Publication number: 20220049381Abstract: A recycled cellulose raw material and a method for recycling a cellulose raw material from blended textile waste with high reliability and yielding high raw material quality is shown, the method comprising the steps in the given order: providing the blended textile waste containing at least one cellulose component and at least one synthetic polymer component, treating the blended textile waste in a non-oxidizing aqueous treatment medium in order to degrade the at least one synthetic polymer component, whereby the treatment is carried out at a temperature between 100° C. and 200° C., and obtaining the recycled cellulose raw material from the treated blended textile waste.Type: ApplicationFiled: October 24, 2019Publication date: February 17, 2022Inventors: Richard Herchl, Christoph Klaus-Nietrost, Christian Weilach
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Publication number: 20210079564Abstract: A method of recycling a mixed textile, wherein the method comprises: i) supplying the mixed textile, wherein the mixed textile comprises cellulosic fibers and synthetic fibers, wherein the synthetic fibers comprise at least one synthetic plastic, ii) at least partially depleting the synthetic plastic from the cellulose, and iii) further processing the depleted mixed textile after depleting.Type: ApplicationFiled: January 14, 2019Publication date: March 18, 2021Inventors: Christoph KLAUS-NIETROST, Richard HERCHL, Christian WEILACH
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Publication number: 20210079121Abstract: A method of manufacturing a molded body which comprises cellulose, wherein the method comprises: i) providing a starting material which comprises cellulose and elastane, in particular wherein the elastane in the starting material is present separated from the cellulose, wherein the starting material is a solid body, and ii) generating the molded body which comprises cellulose, in particular by a lyocell-method or a viscose-method, on basis of the starting material, such that the regenerated cellulosic molded body comprises at least a part of the elastane of the starting material. The part of the elastane of the starting material is incorporated in the regenerated cellulosic molded body. Furthermore, a regenerated cellulosic molded body which comprises elastane incorporated in the cellulose, and which is manufactured according to a lyocell-method or a viscose-method.Type: ApplicationFiled: January 14, 2019Publication date: March 18, 2021Inventors: Christoph KLAUS-NIETROST, Richard HERCHL, Christian WEILACH
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Publication number: 20210062417Abstract: A process (1, 101, 201) for separating a fibrous target component (21) from textile waste (2, 5) is shown, said textile waste (2, 5) containing the target component (21) and at least one ancillary component (22), whereby the target component (21) consists of water-swellable textile fibers (51) with a density higher than the density of water, the process (1, 101, 201) comprising the steps: a) dispersing the comminuted textile waste (5) in an aqueous solution (7) to obtain a suspension (8) containing the textile waste (5), and b) separating the dispersed textile waste (5) into a high-density target fraction (81) comprising the target component (21), and a low-density residual fraction (82) comprising the at least one ancillary component (22), according to the respective density of said components (21, 22).Type: ApplicationFiled: January 14, 2019Publication date: March 4, 2021Inventors: Christoph Klaus-Nietrost, Richard Herchl, Christian Weilach
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Publication number: 20210062370Abstract: Method of manufacturing a regenerated cellulosic molded body, wherein the method comprises supplying a starting material which comprises cellulose and at least one foreign matter, transferring at least a part of the starting material with at least a part of the at least one foreign matter into a spinning mass which additionally contains a solvent for solving at least a part of the cellulose of the starting material in the solvent, and extruding the spinning mass to the molded body, and subsequently precipitating in a spinning bath, wherein thereby the molded body is obtained, wherein the molded body comprises cellulose and at least a part of the at least one foreign matter.Type: ApplicationFiled: January 14, 2019Publication date: March 4, 2021Inventors: Christoph KLAUS-NIETROST, Richard HERCHL, Christian WEILACH
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Publication number: 20210062369Abstract: Method of manufacturing a cellulose-regenerated-molded body, wherein the method comprises supplying a starting material which is manufactured by a lyocell-method and which comprises cellulose, which is manufactured by solving a cellulose source in a solvent for manufacturing a spinning mass, by extruding the spinning mass and by subsequently precipitating in a spinning bath, solving the starting material which comprises cellulose, in a solvent for manufacturing a spinning mass, and extruding, and subsequently precipitating the spinning mass in a spinning bath, wherein thereby the molded body is obtained.Type: ApplicationFiled: January 14, 2019Publication date: March 4, 2021Inventors: Christoph KLAUS-NIETROST, Richard HERCHL, Christian WEILACH, Christian SPERGER
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Publication number: 20200349491Abstract: Method of identifying a product which comprises cellulose, wherein in the method a data set is determined which is indicative for multiple constituents of the product or a preform of the product, and the data set which is correlated with the product or the preform is stored in a database.Type: ApplicationFiled: January 14, 2019Publication date: November 5, 2020Inventors: Christoph KLAUS-NIETROST, Richard HERCHL, Christian WEILACH
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Publication number: 20200347520Abstract: Method of recycling a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and the molded bodies are generated based on the cellulosic fibers after mechanically separating and chemically separating.Type: ApplicationFiled: January 14, 2019Publication date: November 5, 2020Inventors: Christoph KLAUS-NIETROST, Richard HERCHL, Christian WEILACH