Patents by Inventor Gerald Kurek
Gerald Kurek 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: 9206331Abstract: The invention relates to a method for producing aqueous polyurethane-polyurea dispersions, aqueous polyurethane-polyurea dispersions produced by this method and their use to produce coating agents and adhesives.Type: GrantFiled: April 13, 2011Date of Patent: December 8, 2015Assignee: Covestro Deutschland AGInventors: Alfred Zastrow, Reiner Witkowski, Ralf Werner, Gerald Kurek, Thorsten Rische, Evgeny Avtomonov, Harald Kraus, Henricus Peerlings
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Publication number: 20130144007Abstract: The invention relates to a method for producing aqueous polyurethane-polyurea dispersions, aqueous polyurethane-polyurea dispersions produced by this method and their use to produce coating agents and adhesives.Type: ApplicationFiled: April 13, 2011Publication date: June 6, 2013Applicant: Bayer Intellectual Property GmbHInventors: Alfred Zastrow, Reiner Witkowski, Ralf Werner, Gerald Kurek, Thorsten Rische, Evgeny Avtomonov, Harald Kraus, Henricus Peerlings
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Publication number: 20080305342Abstract: The present invention relates to polyurethane dispersions comprising polysiloxane building blocks reactive towards isocyanates and processes for using their preparation and their use in coating leather.Type: ApplicationFiled: May 29, 2008Publication date: December 11, 2008Inventors: Juergen Reiners, Tillmann Hassel, Gerald Kurek
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Patent number: 7425516Abstract: This invention relates to solutions of polyurethaneureas in ?-butyrolactone or mixtures of ?-butyrolactone with toxicologically acceptable organic solvents. A process for coating substrates using these polyurethaneurea solutions, and substrates coated by said process are also provided. The substrates coated according to the invention are preferably textile products or leather, but materials such as wood or concrete can also be coated according to the invention.Type: GrantFiled: February 17, 2006Date of Patent: September 16, 2008Assignee: Bayer MaterialScience AGInventors: Jürgen Köcher, Gerald Kurek, Holger Casselmann, Jürgen Urban, Thomas Feller
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Publication number: 20070167565Abstract: The invention relates to new, hydrolysis-stable, aqueous polyurethane-polyurea dispersions based on polyether-polycarbonate-polyols, to a process for preparing them and to their use in coating materials.Type: ApplicationFiled: January 10, 2007Publication date: July 19, 2007Inventors: Thorsten Rische, Thomas Feller, Holger Casselmann, Gerald Kurek, Steffen Hofacker
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Publication number: 20070049684Abstract: The present invention relates to aqueous polyurethane-polyurea dispersions wherein the dispersions contain polyurethane-polyureas that are the reaction products of I) polyisocyanates having an isocyanate group functionality of ?2, II) a polymeric polyol component containing a) 50% to 100% by weight, based on the weight of polyol component II), of polyester polyols having a number average molecular weight Mn of 200 to 8000 g/mol and synthesized from a hydroxyl component and an acid component wherein 50% to 100% by weight, based on the total weight of the hydroxyl component used to prepare polyester polyols II.a), are diols corresponding to formula 1), wherein n is 1 and/or 2, and b) 0% to 50% by weight, based on the weight of polyol component II), of polymeric polyols other than polyester polyols a), and III) optionally other isocyanate-reactive compounds.Type: ApplicationFiled: July 28, 2006Publication date: March 1, 2007Inventors: Thorsten Rische, Holger Casselmann, Thomas Feller, Harald Blum, Gerald Kurek
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Publication number: 20060237682Abstract: The invention provides hydrolysis-stable size compositions based on polycarbonate polyols and polytetramethylene glycol polyols, their preparation and use.Type: ApplicationFiled: April 17, 2006Publication date: October 26, 2006Inventors: Thorsten Rische, Gerald Kurek, Jurgen Meixner, Thomas Feller
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Publication number: 20060189234Abstract: This invention relates to solutions of polyurethaneureas in ?-butyrolactone or mixtures of ?-butyrolactone with toxicologically acceptable organic solvents. A process for coating substrates using these polyurethaneurea solutions, and substrates coated by said process are also provided. The substrates coated according to the invention are preferably textile products or leather, but materials such as wood or concrete can also be coated according to the invention.Type: ApplicationFiled: February 17, 2006Publication date: August 24, 2006Inventors: Jurgen Kocher, Gerald Kurek, Holger Casselmann, Jurgen Urban, Thomas Feller
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Publication number: 20060128885Abstract: The present invention relates to aqueous polyurethane-polyurea dispersions having two discrete maxima in the particle size distribution, wherein the maximum of the fine fraction is between 51 and 150 nm and the maximum of the coarse fraction is between 160 and 700 nm. The present invention also relates to a process for preparing the polyurethane-polyurea dispersions, to coating compositions containing these polyurethane-polyurea dispersions, and to coated substrates prepared from these coating compositions.Type: ApplicationFiled: December 8, 2005Publication date: June 15, 2006Inventors: Thorsten Rische, Gerald Kurek, Holger Casselmann, Thomas Feller, Thomas Munzmay, Detlef-Ingo Schutze, Harald Blum, Hans-Georg Muller
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Publication number: 20060084775Abstract: The invention relates to aqueous coating material compositions stable to hydrolysis, to a process for preparing them and to their use as soft feel paint. The compositions comprise hydroxyl-free polyurethanes and/or polyurethane-ureas based on polycarbonate polyols and polytetramethylene glycol polyols, ionically modified, hydroxyl- and/or amino-containing polyurethanes and/or polyurethane-ureas and at least one crosslinker, and optionally further film-forming resins.Type: ApplicationFiled: September 15, 2005Publication date: April 20, 2006Inventors: Thorsten Rische, Gerald Kurek, Jurgen Meixner, Torsten Pohl, Uwe Klippert, Thomas Feller
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Publication number: 20050222368Abstract: Polyurethane which is obtainable by reacting a) an NCO-containing prepolymer composed of a1) at least one polyesterpolyol, preferably polycarbonatepolyol, carbonate group-free polyesterpolyol, polyestercarbonatepolyol, polyesteramidepolyol, in particular polyesterdiol, having an average molecular weight, determined as the number average, greater than or equal to 500 g/mol, preferably from 500 to 6000 g/mol, in particular from 500 to 4000 g/mol, very particularly preferably from 800 to 4000 g/mol, and a2) at least one polyetherpolyol which differs from a1) and is preferably polyalkylene glycol, such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol, polyhexamethylene glycol and copolyethers, in particular those containing building blocks from the group consisting of ethyleneoxy, propyleneoxy, tetramethyleneoxy and/or hexamethyleneoxy, having a molecular weight, determined as the number average, greater than or equal to 500, preferably from 500 to 10 000 g/mol, in particular from 500 to 40Type: ApplicationFiled: March 29, 2005Publication date: October 6, 2005Inventors: Juergen Reiners, Tillmann Hassel, Gerald Kurek
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Patent number: 6677400Abstract: An aqueous polyurethane resin dispersions containing i) a polyol component with a molecular weight above 300 daltons, containing a polyether diol initiated on an aromatic diol, ii) a polyol component with a molecular weight of 62 to 299 daltons, iii) a monofunctional isocyanate-reactive compound with an ethylene oxide content of at least 50 wt. % and a molecular weight of at least 400 daltons, iv) a polyisocyanate v) an aliphatic polyamine with a molecular weight of 60 to 300 daltons or hydrazine, and vi) a hydrophilic aliphatic diamine, a process for making the dispersion and substrates primed with the dispersion.Type: GrantFiled: August 5, 2002Date of Patent: January 13, 2004Assignee: Bayer AktiengesellschaftInventors: Thomas Münzmay, Uwe Klippert, Frank Kobor, Claus Kobusch, Gerald Kurek
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Patent number: 6642303Abstract: The invention concerns ionic and/or non-ionic hydrophilic, aqueous polyurethane-polyurea dispersions (PU dispersions) based on polycarbonate polyols and polytetramethylene glycol polyols, a process for their production and their use as coating compositions, in particular for the production of very stable thick foam deposits in a single coat.Type: GrantFiled: May 6, 2002Date of Patent: November 4, 2003Assignee: Bayer AktiengesellschaftInventors: Detlef-Ingo Schütze, Gerald Kurek, Thorsten Rische, Jürgen Urban, Tillmann Hassel
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Publication number: 20030105219Abstract: The invention concerns ionic and/or non-ionic hydrophilic, aqueous polyurethane-polyurea dispersions (PU dispersions) based on polycarbonate polyols and polytetramethylene glycol polyols, a process for their production and their use as coating compositions, in particular for the production of very stable thick foam deposits in a single coat.Type: ApplicationFiled: May 6, 2002Publication date: June 5, 2003Inventors: Detlef-Ingo Schutze, Gerald Kurek, Thorsten Rische, Jurgen Urban, Tillmann Hassel
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Publication number: 20030049457Abstract: An aqueous polyurethane resin dispersions containingType: ApplicationFiled: August 5, 2002Publication date: March 13, 2003Inventors: Thomas Munzmay, Uwe Klippert, Frank Kobor, Claus Kobusch, Gerald Kurek
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Patent number: 6482885Abstract: The present invention relates to coating compositions comprising a mixture of at least two aqueous, anionic polyurethane polyurea dispersions A and B, wherein dispersion A as a dry film has a TG in the range from −30° C., to −45° and dispersion B as a dry film has a first TG in the range from −30° C. to −45° C. and a second TG in the range from +45° C. to +60° C., and the mixture of A and B as a dry film has only one TG in the range from −30° C. to −45° C.Type: GrantFiled: July 24, 2000Date of Patent: November 19, 2002Assignee: Bayer AktiengesellschaftInventors: Hanns-Peter Müller, Horst Gruttmann, Joachim Petzoldt, Heino Müller, Jürgen Meixner, Gerald Kurek
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Patent number: 6169141Abstract: The present invention relates to a coating composition containing: A) 25 to 50 wt. % of a polyisocyanate component, B) 5 to 20% wt. % of one or more polyaspartic acid esters C) 10 to 30 wt. % of one or more polyaldimines having a number average molecular weight of 112 to 600 D) 0.1 to 5.0 wt. % of an acetal corresponding to formula IV: E) 0.1 to 5.0 wt. % of castor oil. F) 0.1 to 10.0 wt. % of an organic solvent, G) 15 to 35 wt. % of a pigment and H) 0 to 10 wt. % of a coating additive other than D, F or G, wherein the sum of the percentages of components A to H is 100. The present invention also relates to the use of this coating composition as an anti-corrosive top coat.Type: GrantFiled: May 13, 1999Date of Patent: January 2, 2001Assignee: Bayer AktiengsellschaftInventors: Gerald Kurek, J{umlaut over (u)}rgen Schwindt, Peter Jahn
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Patent number: 6005046Abstract: This invention relates to polyisocyanates which are partially or completely blocked with 3,5-dimethyl-1,2,4-triazole, to heat curable, one-component coating compositions containing these blocked polyisocyanates and to the resulting coatings.Type: GrantFiled: February 9, 1999Date of Patent: December 21, 1999Assignee: Bayer AktiengesellschaftInventors: Gerald Kurek, Eberhard Konig, Klaus Nachtkamp, Theodor Engbert
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Patent number: 5889106Abstract: This invention relates to polyisocyanates which are partially or completely blocked with 3,5-dimethyl-1,2,4-triazole, to heat curable, one-component coating compositions containing these blocked polyisocyanates and to the resulting coatings.Type: GrantFiled: July 24, 1997Date of Patent: March 30, 1999Assignee: Bayer AktiengesellschaftInventors: Gerald Kurek, Eberhard Konig, Klaus Nachtkamp, Theodor Engbert
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Patent number: 5821326Abstract: The present invention relates to a new process for preparing mono and polyaspartates from primary mono and polyamines and maleates in presence of five-membered aromatic ring compounds containing nitrogen atoms in the ring structure as catalysts and use of these mono and polyaspartates as reactive components for polyisocyanates in two-component polyurethane coating compositions and for preparing polyurethane prepolymers.Type: GrantFiled: June 25, 1997Date of Patent: October 13, 1998Assignee: Bayer AktiengesellschaftInventors: Gerald Kurek, Josef Pedain, Reinhard Halpaap, Michael Sonntag