Patents by Inventor Andrea THESING
Andrea THESING 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: 11739055Abstract: The invention relates to a process for preparing a diisocyanate of the formula (A) where R is selected from the group consisting of alkyl, aryl, and combinations thereof, comprising the following process steps in the indicated order; 1) providing an intermediate of the formula (B) with a process using lysine and urea and where R and each R? are independently selected from the group consisting of alkyl, aryl, and combinations thereof; and 2) thermolytic cleavage of the intermediate of the formula (B), thereby affording the diisocyanate of the formula (A), and also to the diisocyanate directly prepared therewith.Type: GrantFiled: June 25, 2021Date of Patent: August 29, 2023Assignee: Evonik Operations GmbHInventors: Emmanouil Spyrou, Holger Loesch, Susanne Kreischer, Andrea Diesveld, Andrea Thesing, Jörg-Joachim Nitz
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Patent number: 11661974Abstract: A torque-transmitting apparatus for a drive assembly includes: a first coupling device for transmitting torque and compensating a shaft offset, and a second coupling device for transmitting and limiting torque, the first and second coupling devices being connected in series. The second coupling device includes an inner hollow part and an outer hollow part. The inner hollow part radially outwardly includes a first frictional surface and the outer hollow part radially inwardly includes a second frictional surface, which is connected to the first frictional surface and interacts therewith. The inner hollow part includes a fillable pressure chamber.Type: GrantFiled: October 22, 2018Date of Patent: May 30, 2023Assignee: RENK GMBHInventors: Mohamed Sfar, Andreas Thesing, Matthias Drerup
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Patent number: 11453744Abstract: The present invention provides compositions consisting of a) at least one metal salt, ammonium salt or phosphonium salt of a strong Brønsted acid and b) at least one primary aliphatic monoamine, processes for preparation thereof and use thereof.Type: GrantFiled: October 5, 2020Date of Patent: September 27, 2022Assignee: Evonik Operations GmbHInventors: Emmanouil Spyrou, Holger Loesch, Andrea Thesing, Andrea Diesveld, Susanne Kreischer
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Publication number: 20220081393Abstract: The present invention relates to a process for preparing at least one ethylenically unsaturated, urethane group-containing compound from i) diisocyanate, ii) at least one compound having at least one hydroxyl group and at least one ethylenically unsaturated, polymerizable group, iii) and optionally at least one hydroxyl group-containing compound, in which 1 diisocyanate is subjected to a determination of the peroxide content immediately prior to the reaction, 2 a) if the determined peroxide content is greater than or equal to 20 mmol/kg, the diisocyanate is subjected to distillative purification until the determined peroxide content is less than 20 mmol/kg, or or b) if the determined peroxide content is less than 20 mmol/kg, no distillative purification is performed, and 3.Type: ApplicationFiled: September 10, 2021Publication date: March 17, 2022Inventors: Emmanouil Spyrou, Holger Loesch, Susanne Kreischer, Andrea Diesveld, Andrea Thesing
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Publication number: 20210403417Abstract: The invention relates to a process for preparing a diisocyanate of the formula (A) where R is selected from the group consisting of alkyl, aryl, and combinations thereof, comprising the following process steps in the indicated order; 1) providing an intermediate of the formula (B) with a process using lysine and urea and ?where R and each R? are independently selected from the group consisting of alkyl, aryl, and combinations thereof; and 2) thermolytic cleavage of the intermediate of the formula (B), thereby affording the diisocyanate of the formula (A), and also to the diisocyanate directly prepared therewith.Type: ApplicationFiled: June 25, 2021Publication date: December 30, 2021Inventors: Emmanouil Spyrou, Holger Loesch, Susanne Kreischer, Andrea Diesveld, Andrea Thesing, Jörg-Joachim Nitz
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Publication number: 20210206730Abstract: The present invention provides a process for preparing isocyanurate from diisocyanate, in which i) prior to the reaction the peroxide content of the diisocyanate to be used is determined, and thereafter ii) a) if the determined peroxide content is greater than 10 mmol/kg, the diisocyanate is subjected to distillative purification until the determined peroxide content is less than or equal to 10 mmol/kg, orb) if the determined peroxide content is less than or equal to 10 mmol/kg, no further action is taken, and iii) distilled diisocyanate with respect to a) and/or untreated diisocyanate with respect to b) is subsequently converted to isocyanurate.Type: ApplicationFiled: December 18, 2020Publication date: July 8, 2021Applicant: Evonik Operations GmbHInventors: Emmanouil Spyrou, Holger Loesch, Susanne Kreischer, Andrea Diesveld, Andrea Thesing
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Publication number: 20210108026Abstract: The present invention provides compositions consisting of a) at least one metal salt, ammonium salt or phosphonium salt of a strong Brønsted acid and b) at least one primary aliphatic monoamine, processes for preparation thereof and use thereof.Type: ApplicationFiled: October 5, 2020Publication date: April 15, 2021Applicant: Evonik Operations GmbHInventors: Emmanouil Spyrou, Holger Loesch, Andrea Thesing, Andrea Diesveld, Susanne Kreischer
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Publication number: 20200256398Abstract: A torque-transmitting apparatus for a drive assembly includes: a first coupling device for transmitting torque and compensating a shaft offset, and a second coupling device for transmitting and limiting torque, the first and second coupling devices being connected in series. The second coupling device includes an inner hollow part and an outer hollow part. The inner hollow part radially outwardly includes a first frictional surface and the outer hollow part radially inwardly includes a second frictional surface, which is connected to the first frictional surface and interacts therewith. The inner hollow part includes a fillable pressure chamber.Type: ApplicationFiled: October 22, 2018Publication date: August 13, 2020Inventors: Mohamed SFAR, Andreas THESING, Matthias DRERUP
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Patent number: 10006493Abstract: Screw connection for a non-shiftable multiple plate clutch with a clamping bolt, a bolt nut cooperating with the clamping bolt, and a clamping bushing which likewise cooperates with the clamping bolt. A seat between the clamping bolt and clamping bushing has at least one gradation such that a first cylindrical seat surface having a first diameter is formed at a first side of the respective gradation and a second cylindrical seat surface having a second diameter is formed at a second side of the respective gradation.Type: GrantFiled: March 12, 2014Date of Patent: June 26, 2018Assignee: RENK AktiengesellschaftInventors: Andreas Thesing, Michael Kösters
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Patent number: 9593135Abstract: The present invention relates to a composition comprising (A) an isocyanate of formula (I) OCN-A-SiR1R2R3 (I), wherein A is straight-chain, branched, substituted and/or unsubstituted aliphatic hydrocarbyl of 1 to 12 carbon atoms or substituted or unsubstituted cycloaliphatic hydrocarbyl of 4 to 18 carbon atoms, wherein R1 is selected from the group comprising —O—Ralk, wherein R2 and R3 are each independently selected from the group of substituents comprising —Ralk and —O—Ralk, and wherein —Ralk is hydrocarbyl of 1 to 6 carbon atoms, and B) a Bronstedt or Lewis acid or a compound which releases a Bronstedt or Lewis acid at room temperature; and also to a process for producing a stabilized alkoxysilane-containing isocyanate comprising the step of adding a Lewis or Bronstedt acid or a compound which releases a Bronstedt or Lewis acid at room temperature to an alkoxysilane-containing isocyanate.Type: GrantFiled: September 25, 2013Date of Patent: March 14, 2017Assignee: EVONIK DEGUSSA GmbHInventors: Emmanouil Spyrou, Manfred Kreczinski, Holger Loesch, Andrea Thesing, Lars Hellkuhl
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Patent number: 9550313Abstract: A process for the production of storage-stable epoxy prepregs is provided. In addition, composites produced from the prepregs based on epoxides and acids having groups reactive to free-radical polymerization is provided.Type: GrantFiled: April 13, 2015Date of Patent: January 24, 2017Assignee: EVONIK DEGUSSA GmbHInventors: Emmanouil Spyrou, Holger Loesch, Susanne Kreischer, Andrea Thesing
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Publication number: 20160251472Abstract: Polyfunctional urethane (meth)acrylates comprising low-monomer-content diisocyanate monoadductsType: ApplicationFiled: September 30, 2014Publication date: September 1, 2016Applicant: EVONIK DEGUSSA GMBHInventors: Emmanouil SPYROU, Holger LOESCH, Marion EWALD, Laura RAMON-GIMENEZ, Andrea THESING
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Publication number: 20160025149Abstract: Screw connection for a non-shiftable multiple plate clutch with a clamping bolt, a bolt nut cooperating with the clamping bolt, and a clamping bushing which likewise cooperates with the clamping bolt. A seat between the clamping bolt and clamping bushing has at least one gradation such that a first cylindrical seat surface having a first diameter is formed at a first side of the respective gradation and a second cylindrical seat surface having a second diameter is formed at a second side of the respective gradation.Type: ApplicationFiled: March 12, 2014Publication date: January 28, 2016Inventors: Andreas THESING, Michael KÖSTERS
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HIGH-REACTIVITY POLYURETHANE COMPOSITIONS CONTAINING URETDIONE GROUPS AND COMPRISING CARBONATE SALTS
Publication number: 20160017179Abstract: A high-reactivity polyurethane composition useful in coatings and adhesives, contains the following components A)-D): A) 5 to 98.7 wt %, based on the total mass of the components, of at least one compound containing an uretdione group, and a free NCO content of less than 5 wt %, and an uretdione content of 2 to 25 wt %, based on i) aliphatic and/or (cyclo)aliphatic and/or cycloaliphatic polyisocyanates and ii) compounds containing hydroxyl groups; B) 0.2 to 5 wt %, based on the total mass of the components, of at least one catalyst selected from the group consisting of a substituted carbonate salt having a quaternary ammonium counterion, a substituted carbonate salt having a quaternary phosphonium counterion and mixtures thereof; C) 0.Type: ApplicationFiled: July 10, 2015Publication date: January 21, 2016Applicant: Evonik Degussa GmbHInventors: Emmanouil SPYROU, Andrea DIESVELD, Andrea THESING, Holger LOESCH -
Publication number: 20150306790Abstract: A process for the production of storage-stable epoxy prepregs is provided. In addition, composites produced from the prepregs based on epoxides and acids having groups reactive to free-radical polymerisation is provided.Type: ApplicationFiled: April 13, 2015Publication date: October 29, 2015Applicant: Evonik Industries AGInventors: Emmanouil SPYROU, Holger Loesch, Susanne Kreischer, Andrea Thesing
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Publication number: 20150274760Abstract: The present invention relates to a composition comprising (A) an isocyanate of formula (I) OCN-A-SiR1R2R3 (I), wherein A is straight-chain, branched, substituted and/or unsubstituted aliphatic hydrocarbyl of 1 to 12 carbon atoms or substituted or unsubstituted cycloaliphatic hydrocarbyl of 4 to 18 carbon atoms, wherein R1 is selected from the group comprising —O—Ralk, wherein R2 and R3 are each independently selected from the group of substituents comprising —Ralk and —O—Ralk, and wherein —Ralk is hydrocarbyl of 1 to 6 carbon atoms, and B) a Bronstedt or Lewis acid or a compound which releases a Bronstedt or Lewis acid at room temperature; and also to a process for producing a stabilized alkoxysilane-containing isocyanate comprising the step of adding a Lewis or Bronstedt acid or a compound which releases a Bronstedt or Lewis acid at room temperature to an alkoxysilane-containing isocyanate.Type: ApplicationFiled: September 25, 2013Publication date: October 1, 2015Applicant: EVONIK INDUSTRIES AGInventors: Emmanouil SPYROU, Manfred KRECZINSKI, Holger LOESCH, Andrea THESING, Lars HELLKUHL
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Publication number: 20150266992Abstract: The invention relates to a low-monomer NCO prepolymer composition of the type A-B-A, which is obtained by reacting CH-acidic compounds with diisocyanates, and methods for the production and use thereof.Type: ApplicationFiled: September 9, 2013Publication date: September 24, 2015Applicant: EVONIK DEGUSSA GMBHInventors: Emmanouil SPYROU, Holger LOESCH, Andrea DIESVELD, Andrea THESING