Patents by Inventor Christoph Krohnke
Christoph Krohnke 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).
-
Patent number: 9446344Abstract: The invention describes a method for enriching at least one component from a gaseous mixture of substances, comprising the steps of (i) contacting a flow of a first gaseous mixture of substances which contains at least one component to be enriched, with a composite material at a first pressure p1 such that the at least one component to be enriched is adsorbed to the composite material and a charged composite material is obtained, said composite material comprising (a) a porous matrix of a fluorine-containing polymer having a percentage of tetrafluoroethylene monomer units of at least 95 mol % based on the total number of monomer units and (b) zeolite particles which are embedded in the matrix and around which matrix filaments extend; (ii) disrupting the flow of the gaseous mixture of substances and (iii) desorbing the at least one component to be enriched from the charged composite material by reducing the pressure to a pressure p2, with p1?p2?200 mbar, such that a second gaseous mixture of substances is prodType: GrantFiled: June 1, 2012Date of Patent: September 20, 2016Assignee: CLARIANT PRODUKTE (DEUTSCHLAND) GMBHInventors: Achim Koch, Michael Zavrel, Christoph Kröhnke, Ulrich Kettling
-
Patent number: 9193847Abstract: The present invention relates to polymer compositions comprising (a) a polymer containing hydroxyl alkylene repeating units and (b) an additive selected from compounds of the formulae (1) to (6) wherein Ra1, Ra2, Ra3 and Ra4 can be the same or different and independently represent a group selected from the moieties having formula (A) or formula (B), wherein Rb is selected from hydrogen, C1-6 alkyl, C1-6 alkoxy and —CO—C1-4 alkyl.Type: GrantFiled: November 25, 2009Date of Patent: November 24, 2015Assignee: Clariant Production (France) S.A.S.Inventors: Christoph Kröhnke, Csaba Kenyō, Károly Renner, Béla Pukánszky
-
Publication number: 20140326138Abstract: The invention describes a method for enriching at least one component from a gaseous mixture of substances, comprising the steps of (i) contacting a flow of a first gaseous mixture of substances which contains at least one component to be enriched, with a composite material at a first pressure p1 such that the at least one component to be enriched is adsorbed to the composite material and a charged composite material is obtained, said composite material comprising (a) a porous matrix of a fluorine-containing polymer having a percentage of tetrafluoroethylene monomer units of at least 95 mol % based on the total number of monomer units and (b) zeolite particles which are embedded in the matrix and around which matrix filaments extend; (ii) disrupting the flow of the gaseous mixture of substances and (iii) desorbing the at least one component to be enriched from the charged composite material by reducing the pressure to a pressure p2, with p1?p2?200 mbar, such that a second gaseous mixture of substances is prodType: ApplicationFiled: June 1, 2012Publication date: November 6, 2014Applicant: CLARIANT PRODUKTE (DEUTSCHLAND) GMBHInventors: Achim Koch, Michael Zavrel, Christoph Kröhnke, Ulrich Kettling
-
Publication number: 20130184364Abstract: Disclosed is a foamable polymer preparation comprising, relative to the total weight of (a), (b) and (c), (a) 19.9 to 89.9% by weight of at least one polymer which single polymer or group of polymers has (i) a water absorption of 0.5% or less, and (ii) a softening point and/or a dropping point in the range of 60 to 170° C., (b) 10 to 80% by weight of at least one functional additive which is (b1) a zeolite and/or (b2) an oxygen scavenger, and (c) 0.1 to 5.0% by weight of heat-expandable microspheres containing a liquid and/or gaseous hydrocarbon encapsulated in a gas-tight thermoplastic shell that expand when heated to the softening point and/or the dropping point of said at least one polymer (a), Furthermore disclosed is a foamed composition obtainable by heating the foamable polymer preparation and a molded article prepared from said foamed composition.Type: ApplicationFiled: July 11, 2011Publication date: July 18, 2013Applicant: SUD-CHEMIE IP GMBH & CO. KG.Inventors: Christoph Krohnke, Achim Koch
-
Publication number: 20110262673Abstract: The present invention relates to polymer compositions comprising (a) a polymer containing hydroxyl alkylene repeating units and (b) an additive selected from compounds of the formulae (1) to (6) wherein Ra1, Ra2, Ra3 and Ra4 can be the same or different and independently represent a group selected from the moieties having formula (A) or formula (B), wherein Rb is selected from hydrogen, C1-6 alkyl, C1-6 alkoxy and —CO—C1-4 alkyl.Type: ApplicationFiled: November 25, 2009Publication date: October 27, 2011Applicant: AIRSEC S.A.S.Inventors: Christoph Krohnke, Csaba Kenyo, Karoly Renner, Bela Pukanszky
-
Publication number: 20090215916Abstract: Foamable polymer preparation comprising (a) 19.9 to 89.9% by weight of a polymer, (b) 10 to 80% by weight of a desiccant, (c) 0.1 to 5.0% by weight of a foaming agent comprising a hydrogen carbonate metal salt and a component selected from the group consisting of a polycarboxylic acid containing 2 to 10 carbon atoms and at least 2 carboxyl groups, a metal salt thereof and an ester of said polycarboxylic acid in which at least one of the carboxyl groups have been esterified with an alcohol containing 1 to 6 carbon atoms; wherein the weight percentages relate to the weight of the foamable polymer preparation.Type: ApplicationFiled: February 25, 2009Publication date: August 27, 2009Applicant: AIRSECInventors: Christoph Krohnke, Valere Logel
-
Publication number: 20090194743Abstract: The invention relates to combinations of benzylidene-bis-malonate based lightsstabilizers with specific other additives showing synergistic efficiency during long term light exposure of organic substrates.Type: ApplicationFiled: August 27, 2007Publication date: August 6, 2009Applicant: CLARIANT FINANCE (BVI) LIMITEDInventors: Lajos Avar, Christoph Kröhnke
-
Publication number: 20090186987Abstract: The present invention relates to the manufacture of polyethylene based wall articles with improved color and processing conditions, which can be surprisingly reached by the use of a specific combination of stabilizers.Type: ApplicationFiled: July 25, 2007Publication date: July 23, 2009Applicant: CLARIANT FINANCE (BVI) LIMITEDInventors: Ernesto Dongiovanni, Korada Supat, Warangkana Saisuwan, Christoph Kröhnke
-
Publication number: 20090012224Abstract: The invention relates to a polyolefin composition comprising a water releasing additive comprising hydrated inorganic or organic compounds as well as to a process for prevention of discoloration in polyolefins.Type: ApplicationFiled: February 4, 2005Publication date: January 8, 2009Applicant: CLARIANT INTERNATIONAL LTDInventors: Christoph Krohnke, Jan Malik, Peter Staniek, Gert Berendsen, Robin J. Lee, Thoi H. Ho
-
Patent number: 7332535Abstract: A stabilizer mixture for one or more compounds of the general formula (1) and (1A) but preferably (1), wherein the groups R independently stand for an alkyl-, cycloalkyl-, aralkyl- or aryl-rest whereas the aromatic ring system may be optionally substituted by one or more groups R? which may be identical or different and which groups R? can be an aryl-, a saturated or unsaturated alkyl-, aralkyl- or cycloalkyl-group as well as halogen, an amino-, aminoalkyl-, aminocycloalkyl-, cyano-, thiocyano- or nitrogroup. and a UV-absorber, hindered amine stabilizer, sterically hindered phenol, organophosphite, organophosphonite, organophosphine, or mixtures thereof. The present invention is useful in the protection of various polymeric substrates against the damaging influence of light exposure by the long term storage of polymers. This effect can be observed especially in so-called engineering plastics (such as, for example, PC, PET, PBT, ABS, TPU).Type: GrantFiled: June 8, 2006Date of Patent: February 19, 2008Assignee: Clariant Finance (BVI) LimitedInventors: Christoph Kröhnke, Joseph R. Webster, Ernst Gronmaier, Lajos Avar
-
Publication number: 20060226395Abstract: A stabilizer mixture for one or more compounds of the general formula (1) and (1A) but preferably (1), wherein the groups R independently stand for an alkyl-, cycloalkyl-, aralkyl- or aryl-rest whereas the aromatic ring system may be optionally substituted by one or more groups R? which may be identical or different and which groups R? can be an aryl-, a saturated or unsaturated alkyl-, aralkyl- or cycloalkyl-group as well as halogen, an amino-, aminoalkyl-, aminocycloalkyl-, cyano-, thiocyano- or nitrogroup. and a UV-absorber, hindered amine stabilizer, sterically hindered phenol, organophosphite, organophosphonite, organophosphine, or mixtures thereof. The present invention is useful in the protection of various polymeric substrates against the damaging influence of light exposure by the long term storage of polymers. This effect can be observed especially in so-called engineering plastics (such as, for example, PC, PET, PBT, ABS, TPU).Type: ApplicationFiled: June 8, 2006Publication date: October 12, 2006Inventors: Christoph Krohnke, Joseph Webster, Ernst Gronmaier, Lajos Avar
-
Publication number: 20060211794Abstract: The invention relates to the use of sterically hindered piperidine derivatives (HA(L)S) in pigmented polyolefin polymers for the reduction of warpage effects which are induced by light. Preferably, such sterically hindered piperidine derivatives/amines (HA(L)S) are used in various combinations with UV absorbers, processing stabilisers, phenol-type antioxidants and acid scavengers normally used for the purpose of improved lightfastness and improved mechanical properties. In particular the invention relates to a method to reduce the warpage effect which is induced by light in polyolefin polymers, comprising the steps of combining in the polyolefin polymer at least one organic pigment and at least one sterically hindered piperidine derivative (HA(L)S).Type: ApplicationFiled: March 22, 2004Publication date: September 21, 2006Inventors: Christoph Krohnke, Ernesto Dongiovanni, Rozenn Sourdrille
-
Patent number: 7105590Abstract: The instant invention relates to stabilizer compositions for thermoplastic polymers comprising a) at least one organophosphine, b) at least one 2-phenylbenzofuranone, and c) at least one sterically hindered piperidine based stabilizer (HAS), wherein the weight ratio of component a) to component b) to component c) is from 1:0.05:0.5 to 1:3:5. The instant compositions need an overall lower concentration as compared with the conventional phenol-containing formulations. In polyolefin articles, particularly in polyolefin-fibers, discoloration during processing and service life by both the formation of quinoid products and by action of NOx gases (gasfading) is avoided.Type: GrantFiled: August 5, 2002Date of Patent: September 12, 2006Assignee: Clariant Finance (BVI) LimitedInventors: Christoph Kröhnke, Peter Staniek
-
Patent number: 7083743Abstract: The invention relates to a synergistic mixture comprising a) at least one compound from the group which consists of the phosphanes of the formula (I), (di/oligo)phosphanes of the formulae (II) and (III) and cyclophosphanes of the formula (IV) and b) at least one 6-hydroxychromane derivative of the general formula (V) and also to a process which stabilizes polymers with respect to thermooxidative degradation by addition and incorporation of this synergistic mixture.Type: GrantFiled: December 18, 2000Date of Patent: August 1, 2006Assignee: Clariant Finance (BVI) LimitedInventors: Christoph Kröhnke, Peter Staniek
-
Patent number: 6995200Abstract: The present invention relates to a stabilizer composition comprising a) at least one sterically hindered phenol, b) at least one phosphorus-containing secondary antioxidant, and c) at least one Leucine compound, wherein the weight ratio of component (a) to component (b) to component (c) is from 1:5:3 to 1:0,5:0,1 for the stabilization of polyolefine-based thermoplastic polymers against degradation, crosslinking and/or discoloration due to the exposure to heat and/or light, especially in the presence of oxygen.Type: GrantFiled: February 20, 2002Date of Patent: February 7, 2006Assignee: Clariant Finance (BVI) LimitedInventor: Christoph Kröhnke
-
Publication number: 20050250889Abstract: The invention relates to synergistic stabilizer compositions comprising Hindered Amine Stabilizers (HAS), phenolic antioxidants, and, if appropriate, UV-absorbers, for pigmented thermoplastic polymers, especially for polyolefin pipes and other polyolefin molding materials, which are in prolonged contact with water. These mixtures show superior long term performance as measured by standard test methods such as color measurements.Type: ApplicationFiled: August 8, 2001Publication date: November 10, 2005Inventors: Jan Malik, Christoph Krohnke
-
Publication number: 20040192877Abstract: The instant invention relates to polyamides containing chemically bound UV-absorbers of the type oxanilide or benzylidene-malonate produced by co-condensation of the UV-absorbers with the prepolymeric compounds and to a process for the production of polyamides with improved mechanical properties wherein the prepolymeric compounds and the UV-absorbers are mixed prior to the condensation reaction and wherein the UV-absorbers are used in a concentration range of from 0.0001 to 5% by weight, related to the prepolymeric compounds.Type: ApplicationFiled: February 5, 2004Publication date: September 30, 2004Inventors: Christoph Krohnke, Jan Malik
-
Publication number: 20040186207Abstract: The instant invention relates to stabilizer compositions for thermoplastic polymers comprising a) at least one organophosphine, b) at least one 2-phenylbenzofuranone, and c) at least one sterically hindered piperidine based stabilizer (HAS), wherein the weight ratio of component a) to component b) to component c) is from 1:0.05:0.5 to 1:3:5. The instant compositions need an overall lower concentration as compared with the conventional phenol-containing formulations. In polyolefin articles, particularly in polyolefin-fibers, discoloration during processing and service life by both the formation of quinoid products and by action of NOx gases (gasfading) is avoided.Type: ApplicationFiled: February 5, 2004Publication date: September 23, 2004Inventor: Christoph Krohnke
-
Patent number: 6787591Abstract: The invention relates to synergistic stabilizer compositions comprising Hindered Amine Stabilizers (HAS), phenolic antioxidants, and, if appropriate, UV-absorbers, for thermoplastic polymers, especially for polyolefin pipes and other polyolefin molding materials, which are in prolonged contact with water. These mixtures show superior long term performance as measured by standard test methods such as oxidation induction time (OIT).Type: GrantFiled: August 22, 2002Date of Patent: September 7, 2004Assignee: Clariant Finance (BVI) LimitedInventors: Harald Koch, Christoph Kröhnke, Alexander Lichtblau, Matthias Zäh
-
Patent number: 6762225Abstract: The invention relates to a light stabilizer composition obtainable by the process comprising the steps of a) mixing a polymer with at least one polyalkylpiperidine and at least one free radical generator b) melt-blending of that mixture at a temperature above the melting point of the polymer and above the decomposition temperature of the free radical generator and at shear conditions sufficient to blend the components. The invention also provides a method for enhancing the light stability of polymers, preferably polyolefins.Type: GrantFiled: September 6, 2002Date of Patent: July 13, 2004Assignee: Clariant Finance (BVI) LimitedInventors: Jan Malik, Christoph Kröhnke