Patents by Inventor Urs Rauwald
Urs Rauwald 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: 11434321Abstract: A process for producing rigid PUR/PIR foams via the reaction of a reaction mixture comprising A1 an isocyanate-reactive component, A2 a flame retardant, A3 a blowing agent, A4 a catalyst, and A5 optionally auxiliaries and additives with B an organic polyisocyanate component. Component A1 comprises a diurethane diol A1.1 and a compound A1.2 selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol, and polyether ester polyol. Also disclosed is a rigid PUR/PIR foam, an insulating material, a composite element, and a mixture.Type: GrantFiled: December 12, 2018Date of Patent: September 6, 2022Assignee: COVESTRO DEUTSCHLAND AGInventors: Hartmut Nefzger, Persefoni Hilken, Urs Rauwald
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Patent number: 11149145Abstract: This invention relates to novel macromers containing dithiocarbonate (or xanthate) groups, novel preformed stabilizers comprising macromers, and novel polymer polyols comprising the novel macromers and/or novel preformed stabilizers. This invention also relates to processes for the preparation of these materials. Other aspects of this invention include foams comprising the novel polymer polyols and a process for preparing foam comprising the novel polymer polyols.Type: GrantFiled: November 19, 2019Date of Patent: October 19, 2021Assignees: Covestro LLC, Covestro Deutschland AGInventors: Rick L. Adkins, Jack R. Reese, Thomas Ernst Müller, Christoph Gürtler, Urs Rauwald, Muhammad Afzal Subhani, Verena Jakoby, Burkhard Köhler, Walter Leitner
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Publication number: 20200392277Abstract: A process for producing rigid PUR/PIR foams via the reaction of a reaction mixture comprising A1 an isocyanate-reactive component, A2 a flame retardant, A3 a blowing agent, A4 a catalyst, and A5 optionally auxiliaries and additives with B an organic polyisocyanate component. Component A1 comprises a diurethane diol A1.1 and a compound A1.2 selected from the group consisting of polyether polyol, polyester polyol, polyether carbonate polyol, and polyether ester polyol. Also disclosed is a rigid PUR/PIR foam, an insulating material, a composite element, and a mixture.Type: ApplicationFiled: December 12, 2018Publication date: December 17, 2020Inventors: Hartmut Nefzger, Persefoni Hilken, Urs Rauwald
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Patent number: 10836858Abstract: The invention relates to a method for producing polyether carbonate polyols by adding alkylene oxides and carbon dioxide to an H-functional starter substance in the presence of a double metal cyanide (DMC) catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, wherein (?) alkylene oxide and carbon dioxide are added to an H-functional starter substance in a reactor with a total pressure (absolute) of 5 to 120 bar in the presence of a double metal cyanide catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, and a reaction mixture containing the polyether carbonate polyol is obtained, (?) the reaction mixture obtained in step (?) remains in the reactor or is optionally continuously transferred to a downstream reactor at a starting total pressure (absolute) of 5 to 120 bar, the content of free alkylene oxide in the reaction mixture being reduced in the course of a downstream reaction in each case, and the total pressure (absolute)Type: GrantFiled: June 20, 2017Date of Patent: November 17, 2020Assignee: Covestro Deutschland AGInventors: Jörg Hofmann, Urs Rauwald, Stefanie Braun, Matthias Wohak, Hartmut Nefzger, Nicole Welsch, Aurel Wolf, Michael Traving, Lars Krueger
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Publication number: 20200087511Abstract: This invention relates to novel macromers containing dithiocarbonate (or xanthate) groups, novel preformed stabilizers comprising macromers, and novel polymer polyols comprising the novel macromers and/or novel preformed stabilizers. This invention also relates to processes for the preparation of these materials. Other aspects of this invention include foams comprising the novel polymer polyols and a process for preparing foam comprising the novel polymer polyols.Type: ApplicationFiled: November 19, 2019Publication date: March 19, 2020Inventors: Rick L. ADKINS, Jack R. Reese, Thomas Ernst Müller, Christoph Gürtler, Urs Rauwald, Muhammad Afzal Subhani, Verena Jakoby, Burkhard Köhler, Walter Leitner
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Patent number: 10526484Abstract: This invention relates to novel macromers containing dithiocarbonate (or xanthate) groups, novel preformed stabilizers comprising macromers, and novel polymer polyols comprising the novel macromers and/or novel preformed stabilizers. This invention also relates to processes for the preparation of these materials. Other aspects of this invention include foams comprising the novel polymer polyols and a process for preparing foam comprising the novel polymer polyols.Type: GrantFiled: December 20, 2017Date of Patent: January 7, 2020Assignees: Covestro LLC, Covestro Deutschland AGInventors: Rick L. Adkins, Jack R. Reese, Thomas Ernst Müller, Christoph Gürtler, Urs Rauwald, Muhammad Afzal Subhani, Verena Jakoby, Burkhard Köhler, Walter Leitner
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Use of alcohols which contain at least two urethane groups for producing polyether carbonate polyols
Patent number: 10519276Abstract: The present invention relates to a method for producing polyether carbonate polyols by attaching alkyloxides and carbon dioxide to H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as the H-functional starter compound.Type: GrantFiled: May 24, 2016Date of Patent: December 31, 2019Assignee: Covestro Deutschland AGInventors: Urs Rauwald, Jörg Hofmann, Bert Klesczewski, Hartmut Nefzger, Aurel Wolf, Jens Langanke -
Patent number: 10487175Abstract: The present invention relates to a process for preparing polyether polyols by adding alkylene oxides onto H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as H-functional starter compound.Type: GrantFiled: May 19, 2016Date of Patent: November 26, 2019Assignee: Covestro Deutschland AGInventors: Jörg Hofmann, Urs Rauwald, Bert Klesczewski, Hartmut Nefzger
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Publication number: 20190322801Abstract: The invention relates to a method for producing polyether carbonate polyols by adding alkylene oxides and carbon dioxide to an H-functional starter substance in the presence of a double metal cyanide (DMC) catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, wherein (?) alkylene oxide and carbon dioxide are added to an H-functional starter substance in a reactor with a total pressure (absolute) of 5 to 120 bar in the presence of a double metal cyanide catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, and a reaction mixture containing the polyether carbonate polyol is obtained, (?) the reaction mixture obtained in step (?) remains in the reactor or is optionally continuously transferred to a downstream reactor at a starting total pressure (absolute) of 5 to 120 bar, the content of free alkylene oxide in the reaction mixture being reduced in the course of a downstream reaction in each case, and the total pressure (absolute)Type: ApplicationFiled: June 20, 2017Publication date: October 24, 2019Inventors: Jörg HOFMANN, Urs RAUWALD, Stefanie BRAUN, Matthias WOHAK, Hartmut NEFZGER, Nicole WELSCH, Aurel WOLF, Michael TRAVING, Lars KRUEGER
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Publication number: 20190185666Abstract: This invention relates to novel macromers containing dithiocarbonate (or xanthate) groups, novel preformed stabilizers comprising macromers, and novel polymer polyols comprising the novel macromers and/or novel preformed stabilizers. This invention also relates to processes for the preparation of these materials. Other aspects of this invention include foams comprising the novel polymer polyols and a process for preparing foam comprising the novel polymer polyols.Type: ApplicationFiled: December 20, 2017Publication date: June 20, 2019Inventors: Rick L. Adkins, Jack R. Reese, Thomas Ernst Müller, Christoph Gürtler, Urs Rauwald, Muhammad Afzal Subhani, Verena Jakoby, Burkhard Köhler, Walter Leitner
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Publication number: 20180312632Abstract: The present invention relates to a process for preparing polyether polyols by adding alkylene oxides onto H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as H-functional starter compound.Type: ApplicationFiled: May 19, 2016Publication date: November 1, 2018Inventors: Jörg Hofmann, Urs Rauwald, Bert Klesczewski, Hartmut Nefzger
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USE OF ALCOHOLS WHICH CONTAIN AT LEAST TWO URETHANE GROUPS FOR PRODUCING POLYETHER CARBONATE POLYOLS
Publication number: 20180291149Abstract: The present invention relates to a method for producing polyether carbonate polyols by attaching alkyloxides and carbon dioxide to H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as the H-functional starter compound.Type: ApplicationFiled: May 24, 2016Publication date: October 11, 2018Inventors: Urs Rauwald, Jörg Hofmann, Bert Klesczewski, Hartmut Nefzger, Aurel Wolf, Jens Langanke -
Publication number: 20180265623Abstract: The invention relates to a method for producing polyurethane foams by reacting an isocyanate component with a component that is reactive to isocyanates and that comprises at least one polyether carbonate polyol, the reaction taking place in the presence of an amine antioxidant. The invention also relates to polyurethane foams produced according to the claimed method and to the use of said foams.Type: ApplicationFiled: January 29, 2016Publication date: September 20, 2018Inventors: Bert Klesczewski, Urs Rauwald, Jörg Hofmann
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Publication number: 20180044464Abstract: The present invention relates to a method for the production of viscoelastic polyurethane foams by reacting an isocyanate component with a component which is reactive towards isocyanates, comprising ?50 to ?100 weight parts of at least one polyether carbonate polyol with a hydroxyl number according to DIN 53240 of ?150 mg KOH/g to ?300 mg KOH/g. The invention also relates to polyurethane foams produced by the method of the invention and their use.Type: ApplicationFiled: February 23, 2016Publication date: February 15, 2018Inventors: Bert Klesczewski, Urs Rauwald, Jörg Hofmann
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Patent number: 8540959Abstract: According to some embodiments, the present invention provides a method for attaining short carbon nanotubes utilizing electron beam irradiation, for example, of a carbon nanotube sample. The sample may be pretreated, for example by oxonation. The pretreatment may introduce defects to the sidewalls of the nanotubes. The method is shown to produces nanotubes with a distribution of lengths, with the majority of lengths shorter than 100 tun. Further, the median length of the nanotubes is between about 20 nm and about 100 nm.Type: GrantFiled: May 7, 2007Date of Patent: September 24, 2013Assignee: William Marsh Rice UniversityInventors: Kirk J. Ziegler, Urs Rauwald, Robert H. Hauge, Howard K. Schmidt, W. Carter Kittrell, Zhenning Gu, Irene Morin Marek
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Patent number: 8378059Abstract: This invention pertains generally to supramolecular polymers comprising a polymeric molecule linked to a first CB[8] guest molecule and an attachment compound linked to a second CB[8] guest molecule, wherein the first and second CB[8] guest molecules form a ternary host-guest complex with a CB[8] molecule which non-covalently links the polymeric molecule and the attachment compound in a supramolecular polymer. These polymers are useful as vehicles for delivery of a therapeutic compound for use in a method of treatment of the human or animal body, in particular for use in a method of delivering the therapeutic compound to a target site in an individual. The invention also provides methods for the preparation of the supramolecular polymers.Type: GrantFiled: December 4, 2008Date of Patent: February 19, 2013Assignee: Cambridge Enterprise Ltd.Inventors: Urs Rauwald, Oren Alexander Scherman
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Publication number: 20100284898Abstract: According to some embodiments, the present invention provides a method for attaining short carbon nanotubes utilizing electron beam irradiation, for example, of a carbon nanotube sample. The sample may be pretreated, for example by oxonation. The pretreatment may introduce defects to the sidewalls of the nanotubes. The method is shown to produces nanotubes with a distribution of lengths, with the majority of lengths shorter than 100 tun. Further, the median length of the nanotubes is between about 20 nm and about 100 nm.Type: ApplicationFiled: May 7, 2007Publication date: November 11, 2010Applicant: William Marsh Rice UniversityInventors: Kirk J. Ziegler, Urs Rauwald, Robert H. Hauge, Howard K. Schmidt, Irene Morin Marek, Zhenning Gu, W. Carter Kittrell
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Publication number: 20100247477Abstract: This invention pertains generally to supramolecular polymers comprising a polymeric molecule linked to a first CB[8] guest molecule and an attachment compound linked to a second CB[8] guest molecule, wherein the first and second CB[8] guest molecules form a ternary host-guest complex with a CB[8] molecule which non-covalently links the polymeric molecule and the attachment compound in a supramolecular polymer. These polymers are useful as vehicles for delivery of a therapeutic compound for use in a method of treatment of the human or animal body, in particular for use in a method of delivering the therapeutic compound to a target site in an individual. The invention also provides methods for the preparation of the supramolecular polymers.Type: ApplicationFiled: December 4, 2008Publication date: September 30, 2010Applicant: Cambridge Enterprise LimitedInventors: Urs Rauwald, Oren Alexander Scherman