Patents by Inventor Ernst Muller
Ernst Muller 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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Publication number: 20180291148Abstract: The invention relates to a method for producing polyether carbonate polyols by agglomeration of alkyl oxides and carbon dioxide on carboxylic acid in the presence of a double metal cyanide (DMC) catalyst, wherein one or more carboxylic acids are continually added to the reactor during the reaction, characterized in that the carboxylic acid is at least difunctional and has a pKa value greater than or equal to 1.5, and the adding of the one or more carboxylic acids occurs such that, at any time in the method according to the invention, the molar concentration of unconverted carboxylic acid in the reaction mixture does not exceed a value in the amount of 0.001 mol/g multiplied by the mass of the catalyst used per liter of reaction mixture, specified in grams, and two carboxylic acid groups present in the same molecule are separated from each other at least by one carbon atom. The method further relates to the polyether carbonate polyols obtained according to the invention.Type: ApplicationFiled: May 24, 2016Publication date: October 11, 2018Inventors: Thomas Ernst Müller, Christoph Gürtler, Michael Pohl, Muhammad Afzal Subhani, Walter Leitner
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Publication number: 20180037697Abstract: The present invention relates to a process for preparing aromatic polycarbonates, comprising the step of reacting bisphenols with dithiocarbonates or selenium analogues thereof in the presence of a catalyst. It further relates to the use of dithiocarbonates or selenium analogues thereof as transesterifying reagents for the preparation of polycarbonates.Type: ApplicationFiled: February 15, 2016Publication date: February 8, 2018Inventors: Thomas Ernst MÜLLER, Christoph GÜRTLER, Nicolai KOLB, Burkhard KÖHLER, Walter LEITNER, Jan HEIJL, Alexandra GROßE BÖWING
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Publication number: 20180022871Abstract: The present invention relates to polyoxazolidinone compounds, a method for the production of polyoxazolidinone compounds, comprising the step of reacting a biscarbamate compound with a bisepoxide compound in the presence of a mono-carbamate, a mono-isocyanate and/or a mono-epoxide compound as chain regulator and a suitable base having a pKb value of ?9 as catalyst. The invention further relates to the use of polyoxazolidinone compounds with high thermal stability.Type: ApplicationFiled: February 9, 2016Publication date: January 25, 2018Inventors: Thomas Ernst Müller, Christoph Gürtler, Susmit Basu, Claudine Rangheard, David Rivillo, Walter Leitner, Burkhard Köhler
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Publication number: 20180009941Abstract: The invention provides a process for preparing polyether carbonate polyols by addition of alkylene oxides and carbon dioxide onto 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 onto H-functional starter substance in a reactor 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, wherein a reaction mixture comprising the polyether carbonate polyol is obtained, and wherein (?) the reaction mixture obtained in step (?) remains in the reactor or is transferred continuously into a postreactor, wherein the content of free alkylene oxide in the reaction mixture is reduced in each case in the manner of a postreaction, characterized in that a component K is added during the postreaction, component K being selected from at least one compound containing a pType: ApplicationFiled: January 27, 2016Publication date: January 11, 2018Inventors: Jörg Hofmann, Thomas Ernst Müller, Michael Pohl, Walter Leitner
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Publication number: 20180001310Abstract: The invention relates to a method for producing isocyanurates and isocyanurate-containing polyurethanes, comprising the step of reacting an isocyanate in the presence of a catalyst.Type: ApplicationFiled: December 10, 2015Publication date: January 4, 2018Inventors: Thomas Ernst Müller, Torsten Hagen, Bolko Raffel, Christoph Gürtler, Henning Vogt, Abdulghani Al Nabulsi, Burkhard Köhler, Walter Leitner
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Publication number: 20170321005Abstract: The invention relates to a method for producing polyether carbonate polyols, comprising the step of reacting alkylene oxide with carbon dioxide in the presence of an h-functional starter compound and double metal cyanide catalyst. The invention is characterized in that the method comprises the following steps: (?) optionally, pre-treating the double metal cyanide catalyst (DMC catalyst) at a temperature of 50 to 200° C.Type: ApplicationFiled: November 16, 2015Publication date: November 9, 2017Applicant: Covestro Deutschland AGInventors: Thomas Ernst Müller, Christoph Gürtler, Matthias Wohak, Jörg Hofmann, Carlson Torren
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Publication number: 20170313816Abstract: The present invention relates to a method for producing polyether carbonates containing alkoxysilyl groups in which (a) an unsaturated polyether carbonate polyol is reacted with (b) an alkoxysilane compound of formula (II) Si(X)m(R1)n(R2)o (II), where X=H, Y—S—H and Y=C1-C22 alkylene, C6-C14 arylene, C7-C14 aralkylene, C7-C14 alkylarylene; R1=C1-C8 alkoxy, C7-C20-aralkoxy, C6-C14 aroxy, C7-C20 alkylaroxy; R2=C1-C22 alkyl, C6-C14 aryl, C7-C14 aralkyl, C7-C14 alkylaryl, and m and n represent, independently of one another, an integer ?1, o is zero or an integer ?1 and m+n+o=4. The invention further relates to the production of a polyurethane polymer using such a polyether carbonate, a cross-linked, siloxane group containing polymer and a molded part containing or consisting of said cross-linked polymer.Type: ApplicationFiled: September 21, 2015Publication date: November 2, 2017Applicant: Covestro Deutschland AGInventors: Thomas Ernst Müller, Christoph Gürtler, Muhammad Afzal Subhani, Burkhard Koehler
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Publication number: 20170233526Abstract: A process for the preparation of polyethercarbonate polyols comprises the reaction of a reaction mixture comprising one or more H-functional starter compounds, one or more alkylene oxides, carbon dioxide and a double metal cyanide (DMC) catalyst. The reaction is conducted in a reactor under stirring with a specific power input into the reaction mixture, expressed as Watts per liter (W/L), of ?0.07 to ?5.00.Type: ApplicationFiled: August 10, 2015Publication date: August 17, 2017Inventors: Stefanie Braun, Thomas Ernst Müller, Jörg Hofmann, Kabir Rakibul, Walter Leitner, Muhammad Afzal Subhani
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Patent number: 9688814Abstract: The invention relates to a method for producing functionalized polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in addition taking place in the presence of a starter compound comprising at least 2 Zerewitinoff active H atoms, to obtain an intermediate product. The intermediate product obtained is subsequently reacted with a cyclic carboxylic acid ester or carbonic acid ester, thus obtaining a functionalized polyoxymethylene block copolymer. The invention further relates to functionalized polyoxymethylene block copolymers obtained by such a method and to the use of said copolymers.Type: GrantFiled: December 18, 2013Date of Patent: June 27, 2017Assignee: Covestro Deutschland AGInventors: Thomas Ernst Müller, Christoph Gürtler, Walter Leitner, Henning Vogt, Gabor Barath
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Patent number: 9676905Abstract: The invention relates to a method for producing polyether carbonate polyols by attaching alkylene oxides and carbon dioxide to one or more H-functional starters in the presence of a double-metal cyanide catalyst, characterized in that (alpha) a suspending agent which contains no H-functional groups is provided in a reactor, (ss) optionally, a moiety of alkylene oxide is added to the mixture from step (alpha) at temperatures of 90 to 150 DEG C., and the addition of the alkylene oxide compound is then interrupted; and (gamma) one or more H-functional starters are continuously metered into the reactor during the reaction.Type: GrantFiled: August 23, 2013Date of Patent: June 13, 2017Assignee: Covestro Deutschland AGInventors: Thomas Ernst Müller, Christoph Gürtler, Jörg Hofmann, Matthias Wohak, Stefanie Braun, Aurel Wolf, Ilja Peckermann
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Patent number: 9657135Abstract: The invention relates to a method for producing polyether ester carbonate polyols by attaching at least one alkylene oxide, at least one cyclical anhydride, and carbon dioxide to one or more H-functional starter substances in the presence of a double metal cyanide catalyst. The method is characterized in that (?) a suspension agent, which does not contain H-functional groups, is provided in a reactor, and (?) one or more H-functional starter substances are continuously metered into the reactor during the reaction process, and the one or more alkylene oxides, the cyclical anhydride, and optionally the carbon dioxide are metered simultaneously or sequentially.Type: GrantFiled: February 23, 2015Date of Patent: May 23, 2017Assignee: Covestro Deutschland AGInventors: Thomas Ernst Muller, Christoph Gurtler, Muhammad Afzal Subhani, Walter Leitner
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Publication number: 20170088659Abstract: The present invention relates to a method for the production of oxazolidinone compounds with low colour intensity, comprising the step of reacting an isocyanate compound with an epoxide compound in the presence of a catalyst which is free of halide anions. The invention further relates to a method for the production of oligooxazolidinone and/or polyoxazolidinone compounds, comprising the step of reacting a polyisocyanate compound with a polyepoxide compound in the presence of said catalyst. The invention further relates to oligooxazolidinone and/or polyoxazolidinone compounds with low colour intensity, obtainable by a method according to the invention.Type: ApplicationFiled: May 7, 2015Publication date: March 30, 2017Applicant: Covestro Deutschland AGInventors: Thomas Ernst Müller, Christoph Gürtler, Susmit Basu, Claudine Rangheard, Anna Weber, Henning Vogt, Walter Leitner
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Publication number: 20170081459Abstract: The present invention relates to a method for the production of polyoxazolidinone compounds, comprising the step of reacting an isocyanate compound, preferably a diisocyanate compound with an epoxide compound, preferably a diepoxide compound. The invention further relates to a polyoxazolidinone compound obtainable by said method, a polymeric resin obtainable by reacting a polymeric compound according to the invention with a cross linking compound and the use of a polymeric resin according to the invention as a coating, additive and composite material.Type: ApplicationFiled: May 7, 2015Publication date: March 23, 2017Inventors: Thomas Ernst Müller, Christoph Gürtler, Susmit Basu, Claudine Rangheard, Anna Weber, Walter Leitner
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Publication number: 20170081462Abstract: The present invention relates to a method for the selective production of oxazolidinone compounds with high activities, comprising the step of reacting an isocyanate compound with an epoxide compound in the presence of an onium salt as catalyst and to the oxazolidinone compounds obtainable by said method. The invention further relates to a polyoxazolidinone compound, obtainable by reacting a polyisocyanate compound with a polyepoxide compound in the presence of an onium salt as catalyst, with a regioselectivity towards the 5-substituted 1,3-oxazolidin-2-one regioisomer of ?78%.Type: ApplicationFiled: May 7, 2015Publication date: March 23, 2017Inventors: Thomas Ernst Müller, Christoph Gürtler, Susmit Basu, Irene Latorre, Claudine Rangheard, Walter Leitner
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Patent number: 9534090Abstract: The invention relates to a method for producing NCO-modified polyoxymethylene block copolymers comprising the step of polymerizing formaldehyde in a reaction vessel in the presence of a catalyst, the polymerization of formaldehyde in addition taking place in the presence of a starter compound comprising at least 2 Zerewitinoff active H atoms to obtain an intermediate product. The intermediate product obtained is reacted further with an isocyanate to obtain an NCO-modified polyoxymethylene block copolymer. The invention also relates to NCO-modified polyoxymethylene block copolymers obtained by a method of this type and to the use of said copolymers for producing polyurethane polymers.Type: GrantFiled: December 16, 2013Date of Patent: January 3, 2017Assignee: Covestro Deutschland AGInventors: Thomas Ernst Müller, Christoph Gürtler, Walter Leitner, Henning Vogt, Gabor Barath
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Publication number: 20160362518Abstract: The invention relates to a method for producing polyether ester carbonate polyols by attaching at least one alkylene oxide, at least one cyclical anhydride, and carbon dioxide to one or more H-functional starter substances in the presence of a double metal cyanide catalyst. The method is characterized in that (?) a suspension agent, which does not contain H-functional groups, is provided in a reactor, and (?) one or more H-functional starter substances are continuously metered into the reactor during the reaction process, and the one or more alkylene oxides, the cyclical anhydride, and optionally the carbon dioxide are metered simultaneously or sequentially.Type: ApplicationFiled: February 23, 2015Publication date: December 15, 2016Inventors: Thomas Ernst MULLER, Christoph GURTLER, Muhammad Afzal SUBHANI, Walter LEITNER
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Patent number: 9469715Abstract: The invention relates to a method for producing non-alternating formaldehyde/CO2 copolymers, said method comprising the step of reacting formaldehyde or a compound that releases formaldehyde with carbon dioxide in the presence of a catalyst system. Said method is characterized in that the catalyst system comprises a Lewis acid component and a basic component, the Lewis acid component being at least temporarily coordinatively unsaturated under reaction conditions and the basic component having a pKb value of >=0.Type: GrantFiled: December 17, 2013Date of Patent: October 18, 2016Assignee: Covestro Deutschland AGInventors: Thomas Ernst Müller, Christoph Gürtler, Henning Vogt, Mario Krautschick, Walter Leitner
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Patent number: 9382417Abstract: The present invention relates to a process for the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances with the aid of double metal cyanide (DMC) catalysts and in the presence of additives A) chosen from the group consisting of sterically non-hindered phenols, catechols, pyrocatechols, thiazines, phenothiazines, thiazoles, benzothiazoles, oxazines, phenoxazines, 2,2,6,6-tetramethylpiperidine 1-oxyl and nitrostyrenes and optionally in the presence of metal salts B).Type: GrantFiled: March 24, 2011Date of Patent: July 5, 2016Assignee: Covestro Deutschland AGInventors: Christoph Gürtler, Jörg Hofmann, Thomas Ernst Müller, Aurel Wolf, Stefan Grasser, Burkhard Köhler
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Patent number: 9309356Abstract: The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts with heterocumulenes for the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances, and to a process for the preparation of polyether carbonate polyols from one or more H-functional starter substances, one or more alkylene oxides and carbon dioxide in the presence of a double metal cyanide catalyst, characterized in that (?) under an inert gas atmosphere, under an atmosphere of an inert gas/carbon dioxide mixture or under a pure carbon dioxide atmosphere, at temperatures of from 90 to 150° C., the DMC catalyst is mixed with a heterocumulene and H-functional starter substance, (?) alkylene oxide is added at temperatures of from 100 to 150° C.Type: GrantFiled: July 16, 2012Date of Patent: April 12, 2016Assignee: Bayer Intellectual Property GmbHInventors: Thomas Ernst Müller, Christoph Gürtler, Yvonne Dienes, Julien Barruet, Burkhard Köhler, Walter Leitner
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Patent number: 9273183Abstract: The invention relates to a method for producing polyether carbonate polyols by attaching alkylene oxides and carbon dioxide to one or more H-functional starters in the presence of a double-metal cyanide catalyst, characterized in that (alpha) a suspending agent which contains no H-functional groups and is selected from among one or more compounds from the group consisting of aliphatic lactones, aromatic lactones, lactides, cyclic carbonates comprising at least three optionally substituted methylene groups between the oxygen atoms of the carbonate group, aliphatic cyclic anhydrides, and aromatic cyclic anhydrides, is provided in a reactor; (ss) optionally, a moiety of alkylene oxide is added to the mixture from step (alpha) at temperatures of 90 to 150 DEG C., and the addition of the alkylene oxide compound is then interrupted; and (gamma) one or more H-functional starters are continuously metered into the reactor during the reaction.Type: GrantFiled: August 23, 2013Date of Patent: March 1, 2016Assignee: Covestro Deutschland AGInventors: Thomas Ernst Müller, Christoph Gürtler, Matthias Wohak, Jörg Hofmann, Muhammad Afzal Subhani, Walter Leitner, Ilja Peckermann, Aurel Wolf