Abstract: A composition contains glycolipids and triethyl citrate (TEC). The TEC can assist in stabilizing a foam of a corresponding aqueous composition. A method can be used for preparing a corresponding formulation, preferably a cosmetical or pharmaceutical formulation, by providing the composition and diluting the composition. The pH of the composition may be adjusted during the dilution by adding an organic or inorganic base.
Type:
Grant
Filed:
March 8, 2021
Date of Patent:
March 5, 2024
Assignees:
Evonik Operations GmbH, Evonik Dr. Straelmans GmbH
Inventors:
Kathrin Daniela Brandt, Stefan Julian Liebig, Hans Henning Wenk, Manuela Salmina-Petersen, Christoph Tölle, Alina Muss
Abstract: Method for thermal insulation of an evacuable container comprising an inner container, an outer container and a cavity disposed between the inner container and the outer container, wherein said method comprises a) using a vacuum pump to reduce a pressure in the cavity and after achieving a first value of the pressure interrupting the connection to the vacuum pump, b) subsequently making a connection from a reservoir container of the thermally insulating particulate material to a filling opening provided in the region of the cavity, c) setting the evacuable container into motion, wherein the thermally insulating particulate material flows into the cavity according to a) and the pressure in the cavity increases due to the air introduced with the thermally insulating particulate material, d) terminating the filling at a second value of the pressure by interrupting the connection from the cavity to the reservoir container, e) repeating step a), wherein the output of the vacuum pump with which the cavity is deaer
Type:
Grant
Filed:
May 30, 2018
Date of Patent:
March 5, 2024
Assignees:
EVONIK OPERATIONS GMBH, STIEBEL ELTRON GMBH & CO. KG
Inventors:
Matthias Geisler, Ann-Kathrin Herr, Hark-Oluf Asbahr, Thorsten Schultz, Dirk Schäffner, Frank Menzel, Andreas Meng, Dominik Meier
Abstract: A polymer composition can be used for selective absorbing sintering, SAS, or selective inhibition sintering, SIS. The polymer has open mesopores and the cumulative pore volume distribution of the mesopores, measured to DIN 66134, is at least 0.01 cm3/g.
Type:
Grant
Filed:
October 26, 2021
Date of Patent:
March 5, 2024
Assignee:
Evonik Operations GmbH
Inventors:
Wolfgang Diekmann, Maik Grebe, Franz-Erich Baumann, Wolfgang Christoph, Sylvia Monsheimer, Beatrice Küting
Abstract: In a cyclic anthraquinone process for producing hydrogen peroxide, which comprises a distillation unit with vapor compression for concentrating hydrogen peroxide, aqueous condensate from the distillation unit is passed over a bed of a cation exchange resin in its protonated from to provide a purified condensate, and the purified condensate is used as extractant for extracting hydrogen peroxide in the anthraquinone process, as column reflux for the distillation unit or as a diluent for diluting an aqueous hydrogen peroxide solution.
Type:
Grant
Filed:
May 26, 2021
Date of Patent:
February 27, 2024
Assignee:
Evonik Operations GmbH
Inventors:
Nils Henning Seidel, Johannes Kamp, Jürgen Glenneberg, Christian Panz, Eduardo Federico Arévalo Saade, Hari Prasad Mangalapally
Abstract: The present invention relates to a computer-implemented method for identifying an incorrectly or non-calibrated infrared spectrometer, comprising the steps of a) recording an infrared spectrum of a sample with a first infrared spectrometer to provide a sample infrared spectrum, b) recording an infrared spectrum of the same sample as in step a) with a second infrared spectrometer to provide a reference infrared spectrum, wherein said second spectrometer is a correctly calibrated infrared spectrometer, or b?) providing a reference spectrum of the same sample as in step a), wherein said reference spectrum was recorded on a second infrared spectrometer, which is a correctly calibrated spectrometer, c) determining a difference between the wavelength of each extreme point in the sample of step a) and the wavelength of each extreme point in the reference spectrum of step b) or b?), and d) indicating the infrared spectrometer of step a) as incorrectly calibrated or non-calibrated, when at least one difference was det
Type:
Grant
Filed:
December 13, 2019
Date of Patent:
February 27, 2024
Assignee:
Evonik Operations GmbH
Inventors:
Ingolf Reimann, Joachim Reising, Christoph Mueller
Abstract: A process for removing butenes from C4-hydrocarbon streams containing butanes and butenes involves extractive distillation with a suitable solvent. The process also involves heat integration, which allows utilization of the heat of the solvent for heating and/or at least partly evaporating various streams.
Type:
Application
Filed:
January 21, 2022
Publication date:
February 22, 2024
Applicant:
Evonik Operations GmbH
Inventors:
Tanita Valèrie SIX, Armin Matthias Rix, Moritz Schröder, Stephan Peitz, Niklas Paul, Philip Lutze, Andreas Oldenkott, Franz-Josef Stock, Marius Tiesbohnenkamp
Abstract: A process for removing butenes from C4-hydrocarbon streams containing butanes and butenes involves extractive distillation with a suitable solvent. The process also involves heat integration, which allows utilization of the heat of the solvent for heating and/or at least partly evaporating various streams.
Type:
Application
Filed:
January 21, 2022
Publication date:
February 22, 2024
Applicant:
Evonik Operations GmbH
Inventors:
Philip Lutze, Stephan Peitz, Armin Matthias Rix, Tanita Valèrie Six, Moritz Schröder, Niklas Paul
Abstract: A capsule shell contains 40 to 99% by weight of a core-shell polymer and 1 to 60% by weight of a cellulose. The core-shell polymer contains 50 to 90% by weight of a core, containing polymerized units of 65 to 75% by weight of ethyl acrylate and 25 to 35% by weight of methyl methacrylate; and 10 to 50% by weight of a shell, containing polymerized units of 45 to 55% by weight of ethyl acrylate and 45 to 55% by weight of methacrylic acid.
Abstract: A production process can produce foam materials from polymer compositions. This process involves preheating in the foaming of polymers containing blowing agents and subsequent foaming by a thermal process assisted by microwaves.
Type:
Grant
Filed:
December 19, 2019
Date of Patent:
February 20, 2024
Assignee:
Evonik Operations GmbH
Inventors:
Thomas Richter, Andreas Liebe, Christian Traßl, Florian Becker, Vincent Ma Junyong
Abstract: The production of SiOC-bonded, linear polydimethylsiloxane-polyoxyalkylene block copolymers comprising repeating (AB) units by reaction of polyether diols with trifluoromethanesulfonic acid-acidified, equilibrated ?,?-diacetoxypolydimethylsiloxanes is described, wherein the reaction is undertaken by adding a solid, liquid or gaseous base, optionally using inert solvents.
Abstract: A process for producing alkoxysiloxanes by thermal reaction of at least one waste silicone with at least one alkali metal alkoxide and at least one alcohol. The process includes a first step of reacting the at least one waste silicone by mixing with at least one alcohol and at least one alkali metal alkoxide with heating, but without removing any potentially occurring water from the reaction mixture, and a second step of neutralizing the reaction mixture resulting from this reaction using at least one Brønsted acid and separating the solid constituents, and subsequently isolating the alkoxysiloxane by thermal separation of volatile compounds.
Abstract: A process for producing one or more alkoxysiloxanes by thermal reaction of at least one siloxane parent structure with at least one alkali metal alkoxide and at least one alcohol, where the process includes mixing, while heating, the at least one siloxane parent structure with the at least includes one alcohol and the at least one alkali metal alkoxide to form a reaction mixture, neutralizing the reaction mixture by addition of at least one Brønsted acid and optionally with addition of at least one solvent, and subsequently isolating the one or more alkoxysiloxanes by thermal separation of volatile compounds. Potentially occurring water is not removed from the reaction mixture and the reaction mixture does not include solvents which form an azeotrope with water and/or further dehydrating agents.
Abstract: Processes may produce alkoxysiloxane(s) by reaction of siloxane parent structure(s) with alkali metal alkoxide(s). Such processes may include reacting siloxane parent structure(s) by mixing with alkali metal alkoxide(s) with heating and optionally adding silicon dioxide, but without adding alcohol and without removal of any potentially occurring water from the reaction mixture; and neutralizing the resulting reaction mixture by adding Brønsted acid(s), optionally solvent(s), and preferably separating solid constituents; and subsequently isolating the alkoxysiloxane(s) by thermally separating volatile compounds. The siloxane parent structure(s) may be a hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), dodecamethylcyclohexasiloxane (D6), mixture of cyclic branched D/T type siloxanes, silicone oils preferably including at least 100 D units, polydimethylsiloxanediol(s), and/or ?,?-divinylsiloxane(s).
Abstract: Spherical amorphous, non-porous silicas are useful for oral compositions. A method of making the spherical amorphous, non-porous silicas is also provided.
Type:
Application
Filed:
February 3, 2022
Publication date:
February 15, 2024
Applicant:
Evonik Operations GmbH
Inventors:
Nathan Motl, Terry W, NASSIVERA, Fitzgerald A. Sinclair, Scott Pentz, Michael S. Darsillo, Eric G. Lundquist
Abstract: The present invention relates to a process for the preparation of methionine comprising the step of contacting a solution or suspension comprising 2-amino-4-(methylthio)butanenitrile and/or 2-amino-4-(methylthio)butaneamide with water in the presence of a catalyst to give a methionine comprising mixture, wherein the catalyst comprises CeO2 comprising particles, wherein the CeO2 comprising particles have a BET surface area of from 175 to 300+/?10% m2/g measured according to DIN ISO 9277-5 (2003), a mean maximum Feret diameter xFmax, mean of from 3+/?10% to 40+/?10% nm and a mean minimum Feret diameter xFmin, mean of from 2+/?10% to 30+/?10% nm, both measured according to DIN ISO 9276-6 (2012).
Type:
Grant
Filed:
June 8, 2020
Date of Patent:
February 13, 2024
Assignee:
Evonik Operations GmbH
Inventors:
Jürgen Bilz, Cornelia Borgmann, Achim Fischer, Lucas Geist, Anja Nordschild, Christian Renner, Christian Reus, Axel Ronneburg
Abstract: In a method for producing hydrogen cyanide by passing a feed mixture comprising ammonia and methane through reaction tubes, coated on the inner surface with a catalyst comprising platinum, at a reaction temperature of 1000° C. to 1400° C., operated for a time period of at least 100 h, the concentration difference between the ammonia concentration and the methane concentration in the product gas mixture is maintained in a range of from 1.05 % by volume to 3.0% by volume for at least 80% of the time.
Type:
Grant
Filed:
September 26, 2017
Date of Patent:
February 13, 2024
Assignee:
Evonik Operations GmbH
Inventors:
Martin Steurenthaler, Martin Steffan, Thomas Müller, Manfred Bäuml
Abstract: A method for the preparation of homo- and copolymers of alkyl (meth)acrylates having a low residual monomer content involves preparing a reaction mixture containing monomers, charging the reaction mixture, heating the reaction mixture, adding an additional monomer after initial monomer conversion, and optional further processing of the reaction mixture. The homo- and copolymers of alkyl (meth)acrylates obtained by this method as useful in lubricant applications.
Type:
Application
Filed:
December 17, 2021
Publication date:
February 8, 2024
Applicant:
Evonik Operations GmbH
Inventors:
Frank-Olaf Mähling, Maria Stimeier, Thomas Schimmel, Stefan Karl Maier, Sofia Sirak
Abstract: Composition for producing polyurethane foam, in particular rigid polyurethane foam, comprising at least an isocyanate component, a polyol component, optionally a catalyst that catalyses the formation of a urethane or isocyanate linkage, blowing agents, wherein the composition comprises polyester-polysiloxane block copolymers.
Type:
Application
Filed:
November 22, 2021
Publication date:
February 8, 2024
Applicant:
EVONIK OPERATIONS GMBH
Inventors:
Michael SUCHAN, Michael FERENZ, Carsten SCHILLER
Abstract: The present invention relates to a new structural class of phenalkamine, phenalkamine curing agent compositions, methods of making such phenalkamine, and methods of making such compositions. The phenalkamine curing agent compositions of the present invention can be prepared by reacting cardanol with an aldehyde compound and a mixture of methylene bridged poly(cycloaliphatic-aromatic)amines. These curing-agent compositions may be used to cure, harden, and/or crosslink an epoxy resin.