Patents by Inventor Mirko Walden
Mirko Walden 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: 9534095Abstract: The present invention relates to a process for the preparation of water-absorbing polymer structures, comprising the following process steps: i) providing an untreated, water-absorbing polymer structure; and ii) bringing the untreated, water-absorbing polymer structure into contact with a salt comprising a divalent or higher-valent cation of a metal and at least one organic base as anion. The invention relates also to the water-absorbing polymer structures obtainable by that process, to water-absorbing polymer structures, to a composite comprising a water-absorbing polymer structure and a substrate, to a process for the preparation of a composite, to the composite obtainable by that process, to chemical products, such as foams, molded articles and fibers comprising water-absorbing polymer structures or a composite, to the use of water-absorbing polymer structures or of a composite in chemical products and to the use of a salt in the treatment of the surface of water-absorbing polymer structures.Type: GrantFiled: August 13, 2014Date of Patent: January 3, 2017Assignee: Evonik Degussa GmbHInventors: Mirko Walden, Harald Schmidt, Rainer Teni, Armin Reimann, Franck Furno, Jorg Issberner, Peter Herbe, Ursula Nielinger, Michael Keup
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Patent number: 9133342Abstract: The present invention relates to a superabsorber composition comprising an at least surface-crosslinked, water-absorbing polymer structure having a structure surface, a large number of fine particles at least partly immobilized on the structure surface. The invention furthermore relates to a process for the preparation of a superabsorber composition, the superabsorber composition obtainable by this process, a composite comprising the superabsorber composition according to the invention, a process for the production of a composite, the composite obtainable by this process, the use of the superabsorber composition according to the invention in chemical products and chemical products comprising the superabsorber composition according to the invention or the composite according to the invention.Type: GrantFiled: April 20, 2007Date of Patent: September 15, 2015Assignee: Evonik Degussa GmbHInventors: Mirko Walden, Rainer Teni, Armin Reimann, Harald Schmidt
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Patent number: 8907017Abstract: The present invention relates to a process for the preparation of water-absorbing polymer structures, comprising the following process steps: I) providing an untreated, water-absorbing polymer structure; and II) bringing the untreated, water-absorbing polymer structure into contact with a salt comprising a divalent or higher-valent cation of a metal and at least one organic base as anion. The invention relates also to the water-absorbing polymer structures obtainable by that process, to water-absorbing polymer structures, to a composite comprising a water-absorbing polymer structure and a substrate, to a process for the preparation of a composite, to the composite obtainable by that process, to chemical products, such as foams, molded articles and fibers comprising water-absorbing polymer structures or a composite, to the use of water-absorbing polymer structures or of a composite in chemical products and to the use of a salt in the treatment of the surface of water-absorbing polymer structures.Type: GrantFiled: April 20, 2007Date of Patent: December 9, 2014Assignee: Evonik Degussa GmbHInventors: Mirko Walden, Harald Schmidt, Rainer Teni, Armin Reimann, Franck Furno, Jörg Issberner, Peter Herbe, Ursula Nielinger, Michael Keup
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Publication number: 20140350191Abstract: The present invention relates to a process for the preparation of water-absorbing polymer structures, comprising the following process steps: i) providing an untreated, water-absorbing polymer structure; and ii) bringing the untreated, water-absorbing polymer structure into contact with a salt comprising a divalent or higher-valent cation of a metal and at least one organic base as anion. The invention relates also to the water-absorbing polymer structures obtainable by that process, to water-absorbing polymer structures, to a composite comprising a water-absorbing polymer structure and a substrate, to a process for the preparation of a composite, to the composite obtainable by that process, to chemical products, such as foams, molded articles and fibers comprising water-absorbing polymer structures or a composite, to the use of water-absorbing polymer structures or of a composite in chemical products and to the use of a salt in the treatment of the surface of water-absorbing polymer structures.Type: ApplicationFiled: August 13, 2014Publication date: November 27, 2014Inventors: Mirko Walden, Harald Schmidt, Rainer Teni, Armin Reimann, Franck Furno, Jorg Issberner, Peter Herbe, Ursula Nielinger, Michael Keup
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Patent number: 8372920Abstract: The present invention relates to a water-absorbing polymer structure comprising about 10 to about 100,000 ppm, based on the solids content of the water-absorbing polymer structure, of a non-polymerized sulphonate, a non-polymerized salt of a sulphonate or a mixture of a non-polymerized sulphonate and a non-polymerized salt of a sulphonate, and less than 1,000 ppm, based on the solids content of the water-absorbing polymer structure, of non-polymerized sulphites, non-polymerized bisulfites, non-polymerized sulphinates or non-polymerized salts of these compounds.Type: GrantFiled: November 7, 2008Date of Patent: February 12, 2013Assignee: Evonik Stockhausen GmbHInventor: Mirko Walden
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Patent number: 8247499Abstract: A water-absorbing polymer structure is disclosed, whose surface has been brought into contact with a combination of a metal salt and an oxide of a metal. The invention also relates to a process for treating the surface of water-absorbing polymer structures whereby the surface of water-absorbing polymer structures is brought into contact with a combination of a metal salt and an oxide of a metal at a temperature of from about 50 to about 300° C. The present invention further relates to the water-absorbing polymer structures obtainable by this process, a composite comprising a water-absorbing polymer structure and a substrate, chemical products such as foams and fibers comprising water-absorbing polymer structures or a composite, and the use of a combination of an oxide of a metal and of a metal salt for treatment of the surface of super-absorbing polymer structures.Type: GrantFiled: April 21, 2006Date of Patent: August 21, 2012Assignee: Evonik Stockhausen GmbHInventors: Mirko Walden, Franck Furno, Harald Schmidt
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Patent number: 8236876Abstract: The invention relates to absorptive, crosslinked polymeric compositions that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive, crosslinked polymeric composition further includes an antioxidant and is color stable.Type: GrantFiled: November 15, 2011Date of Patent: August 7, 2012Assignee: Evonik Stockhausen, LLCInventors: Iqbal Ahmed, Mirko Walden, Brian King, Scott J. Smith, Harald Schmidt
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Publication number: 20120145956Abstract: The present invention relates to a process for producing surface-modified water-absorbing polymer structures, comprising the process steps of providing a multitude of water-absorbing polymer structures and treating the surface of the water-absorbing polymer structures with a plasma and mixing a filler with the water-absorbing polymer structures. The invention also relates to an apparatus for this process, to the surface-modified water-absorbing polymer structures obtainable by this process, to a composite comprising these surface-modified water-absorbing polymer structures and a substrate, to a process for producing a composite, to a composite obtainable by this process, to chemical products comprising these surface-modified water-absorbing polymer structures or the composite, and to the use of the surface-modified water-absorbing polymer structures or of the composite in chemical products.Type: ApplicationFiled: August 18, 2010Publication date: June 14, 2012Inventors: Mirko Walden, Christoph Loick, Jürgen Erwin Lang, Maciej Olek, Harald Schmidt
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Publication number: 20120083411Abstract: The invention relates to absorptive, crosslinked polymeric compositions that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive, crosslinked polymeric composition further includes an antioxidant and is color stable.Type: ApplicationFiled: November 15, 2011Publication date: April 5, 2012Inventors: Iqbal Ahmed, Mirko Walden, Brian King, Scott J. Smith, Harald Schmidt
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Patent number: 8063118Abstract: The invention relates to absorptive, crosslinked polymeric compositions that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive, crosslinked polymeric composition further includes an antioxidant and is color stable.Type: GrantFiled: September 17, 2010Date of Patent: November 22, 2011Assignee: Evonik Stockhausen, LLCInventors: Iqbal Ahmed, Mirko Walden, Brian King, Scott J. Smith, Harald Schmidt
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Publication number: 20110009841Abstract: The invention relates to absorptive, crosslinked polymeric compositions that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive, crosslinked polymeric composition further includes an antioxidant and is color stable.Type: ApplicationFiled: September 17, 2010Publication date: January 13, 2011Inventors: Iqbal Ahmed, Mirko Walden, Brian King, Scott J. Smith, Harald Schmidt
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Publication number: 20100286287Abstract: The present invention relates to a water-absorbing polymer structure comprising about 10 to about 100,000ppm, based on the solids content of the water-absorbing polymer structure, of a non-polymerized sulphonate, a non-polymerized salt of a sulphonate or a mixture of a non-polymerized sulphonate and a non-polymerized salt of a sulphonate, and less than 1,000 ppm, based on the solids content of the water-absorbing polymer structure, of non-polymerized sulphites, non-polymerized bisulfites, non-polymerized sulphinates or non-polymerized salts of these compounds.Type: ApplicationFiled: November 7, 2008Publication date: November 11, 2010Inventor: Mirko Walden
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Patent number: 7816426Abstract: The invention relates to absorptive, crosslinked polymeric compositions that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive, crosslinked polymeric composition further includes an antioxidant and is color stable.Type: GrantFiled: July 16, 2007Date of Patent: October 19, 2010Assignee: Evonik Stockhausen, LLCInventors: Iqbal Ahmed, Mirko Walden, Brian King, Scott J. Smith, Harald Schmidt
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Patent number: 7728079Abstract: The present invention relates to a process for producing postcrosslinked water-absorbing polymeric formations, comprising the steps of contacting water-absorbing polymeric formations P1 obtained by polymerization of ethylenically unsaturated acid-functional monomers or salts thereof in the presence of a crosslinker with a fluid F1 comprising a postcrosslinker, heating the water-absorbing polymeric formations in contact with the fluid F1 to a temperature in a range from 40 to 300° C. to obtain postcrosslinked water-absorbing polymeric formations P2, the water-absorbing polymeric formations P1 having a thermal stability, as determined in accordance with the test method described herein, of less than 3.0%.Type: GrantFiled: February 24, 2006Date of Patent: June 1, 2010Assignee: Evonik Degussa GmbHInventors: Jörg Harren, Jörg Issberner, Mirko Walden, Rainer Teni, Franck Furno, Peter Werle, Hans-Peter Krimmer
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Publication number: 20090227741Abstract: The present invention relates to a process for the preparation of water-absorbing polymer structures, comprising the following process steps: i) providing an untreated, water-absorbing polymer structure; and ii) bringing the untreated, water-absorbing polymer structure into contact with a salt comprising a divalent or higher-valent cation of a metal and at least one organic base as anion. The invention relates also to the water-absorbing polymer structures obtainable by that process, to water-absorbing polymer structures, to a composite comprising a water-absorbing polymer structure and a substrate, to a process for the preparation of a composite, to the composite obtainable by that process, to chemical products, such as foams, molded articles and fibers comprising water-absorbing polymer structures or a composite, to the use of water-absorbing polymer structures or of a composite in chemical products and to the use of a salt in the treatment of the surface of water-absorbing polymer structures.Type: ApplicationFiled: April 20, 2007Publication date: September 10, 2009Inventors: Mirko Walden, Harald Schmidt, Rainer Teni, Armin Reimann, Franck Furno, Jörg Issberner, Pater Herbe, Ursula Nielinger, Michael Keup
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Publication number: 20090105389Abstract: The present invention relates to a superabsorber composition comprising an at least surface-crosslinked, water-absorbing polymer structure having a structure surface, a large number of fine particles at least partly immobilized on the structure surface. The invention furthermore relates to a process for the preparation of a superabsorber composition, the superabsorber composition obtainable by this process, a composite comprising the superabsorber composition according to the invention, a process for the production of a composite, the composite obtainable by this process, the use of the superabsorber composition according to the invention in chemical products and chemical products comprising the superabsorber composition according to the invention or the composite according to the invention.Type: ApplicationFiled: April 20, 2007Publication date: April 23, 2009Inventors: Mirko Walden, Rainer Teni, Armin Reimann, Harald Schmidt
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Publication number: 20090023848Abstract: The invention relates to absorptive, crosslinked polymeric compositions that are based on partly neutralized, monoethylenically unsaturated monomer carrying acid groups wherein the absorptive, crosslinked polymeric composition further includes an antioxidant and is color stable.Type: ApplicationFiled: July 16, 2007Publication date: January 22, 2009Inventors: Iqbal Ahmed, Mirko Walden, Brian King, Scott J. Smith, Harald Schmidt
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Publication number: 20080280128Abstract: The present invention relates to water-absorbing polymer structures, whose surface has been brought into contact with a compound comprising a polycation and at least one anion. The invention further relates to a process for treating the surface of water-absorbing polymer structures, the surface-treated water-absorbing polymer structures obtainable by this process, a composite comprising a surface-treated, water-absorbing polymer structure as well as a substrate, a process for production of a composite, the composite obtainable by this process, chemical products such as foams, formed bodies, and fibers comprising surface-treated water-absorbing polymer structures or a composite, the use of surface-treated, water-absorbing polymer structures or of a composite in chemical products as well as the use of compounds comprising a polycation with a given structure for the treatment of the surface of water-absorbing polymer structures.Type: ApplicationFiled: April 21, 2006Publication date: November 13, 2008Inventors: Franck Furno, Mirko Walden, Jorg Issberner, Harald Schmidt
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Publication number: 20080221277Abstract: A water-absorbing polymer structure is disclosed, whose surface has been brought into contact with a combination of a metal salt and an oxide of a metal. The invention also relates to a process for treating the surface of water-absorbing polymer structures whereby the surface of water-absorbing polymer structures is brought into contact with a combination of a metal salt and an oxide of a metal at a temperature of from about 50 to about 300° C. The present invention further relates to the water-absorbing polymer structures obtainable by this process, a composite comprising a water-absorbing polymer structure and a substrate, chemical products such as foams and fibers comprising water-absorbing polymer structures or a composite, and the use of a combination of an oxide of a metal and of a metal salt for treatment of the surface of super-absorbing polymer structures.Type: ApplicationFiled: April 21, 2006Publication date: September 11, 2008Inventors: Mirko Walden, Franck Furno, Harald Schmidt
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Publication number: 20080214740Abstract: The present invention relates to a process for producing postcrosslinked water-absorbing polymeric formations, comprising the steps of contacting water-absorbing polymeric formations P1 obtained by polymerization of ethylenically unsaturated acid-functional monomers or salts thereof in the presence of a crosslinker with a fluid F1 comprising a postcrosslinker, heating the water-absorbing polymeric formations in contact with the fluid F1 to a temperature in a range from 40 to 300° C. to obtain postcrosslinked water-absorbing polymeric formations P2, the water-absorbing polymeric formations P1 having a thermal stability, as determined in accordance with the test method described herein, of less than 3.0%.Type: ApplicationFiled: February 24, 2006Publication date: September 4, 2008Applicant: DEGUSSA GMBHInventors: Jorg Harren, Jorg Issberner, Mirko Walden, Rainer Teni, Franck Furno, Peter Werle, Hans-Peter Krimmer