Selected patent applications

At present 91 patent applications have been laid open. For details, see the following pages on the individual projects. 


Method for manufacturing polyether carbonate polyols (Kopie 1)

Christoph Gürtler, Jörg Hofmann, Walter Leitner, Thomas Ernst Müller, Ilja Peckermann, Afzal Muhammad Subhani, Matthias Wohak, Aurel Wolf

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°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.

The family: EP 2 703 425, WO 2014/033070

Priority date: 27.08.2012


Method for manufacturing polyether carbonate polyols

Stefanie Braun, Christoph Gürtler, Jörg Hofmann, Thomas Ernst Müller, Ilja Peckermann, Matthias Wohak, Aurel Wolf

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°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.

The family: EP 2 703 426, WO 2014/033071

Priority date: 27.08.2012


METHOD FOR ACTIVATING DOUBLE METAL CYANIDE CATALYSTS FOR THE PRODUCTION OF POLYETHER CARBONATE POLYOLS (Kopie 1)

Julien Barruet, Yvonne Dienes, Christoph Gürtler, Burkhard Köhler, Walter Leitner, Thomas Ernst Müller

The invention relates to a method for activating double metal cyanide (DMC)-catalysts with heterocumulenes, for the production of polyether carbonate polyols by catalytically copolymerising carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances, and also to a method for producing 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. The invention is characterised in that (a) the DMC catalyst is mixed with heterocumulene and an H-functional starter substance under an inert-gas atmosphere, an atmosphere consisting of a mixture of inert-gas and carbon dioxide, or a pure carbon dioxide atmosphere, and at temperatures of between 90 and 150 °C, (ß) alkylene oxide is added to the mixture from step (a) under an inert-gas atmosphere, an atmosphere consisting of a mixture of inert-gas and carbon dioxide, or a pure carbon dioxide atmosphere, at temperatures of between 100 and 150°C, and (?) one or more alkylene oxides and carbon dioxide are continually metered to the mixture which results from step (ß).

The family: CA 2 841 991, CN 000103797045, EP 2 734 567, EP 2 548 905, KR 10-2014-0048280, WO 2013/010987

Priority: 18.07.2011


METHOD FOR ACTIVATING DOUBLE METAL CYANIDE CATALYSTS FOR THE PRODUCTION OF POLYETHER CARBONATE POLYOLS

Stefan Grasser, Christoph Gürtler, Jörg Hofmann, Burkhard Köhler, Thomas Ernst Müller, Aurel Wolf

The invention relates to a method for producing polyether carbonate polyols by catalytically copolymerizing carbon dioxide (CO2) with alkylene oxides in the presence of one or more H-functional starter substances using double metal cyanide (DMC) catalysts and in the presence of additives A) selected from the group consisting of sterically unhindered phenols, catechols, pyrocatechols, thiazines, phenothiazines, thiazoles, benzothiazoles, oxazines, phenoxazines, 2,2,6,6,-tetramethylpiperidin-1-oxyl and nitrostyrolene and optionally in the presence of metal salts B).

The family: CA 2 794 087, CN 103180361, EP 2 550 314, JP 2013522438, KR 10-2013-0039719, MX 2012011003, SG 183823, US 2013/0072602, WO 2011/117332

Priority date: 24.03.2010


METHOD FOR PRODUCING POLYOLS BY HYDROGENATING CO/OLEFIN COPOLYMERS

Christoph Gürtler, Alexandra Keldenich, Walter Leitner, Thomas Ernst Müller, Henning Vogt

The invention relates to a method for producing polyols, comprising the step of hydrogenating CO/olefin copolymers in the presence of heterogeneous hydrogenation catalysts. The CO/olefin copolymer is a non-alternating copolymer having a CO content <= 33% mol%, and the heterogeneous hydrogenation catalyst has a metal selected from the group comprising manganese, technetium, rhenium, iron, ruthenium, osmium, cobalt, rhodium, iridium, nickel, and/or copper. The invention further relates to polyols that can be obtained by the method according to the invention and to the use of said polyols to produce polyurethane polymers or formaldehyde resins or to the use of said polyols as plasticizers.

The family: WO 2013/034536, DE 10 2011 053 466