Patents by Inventor Dorota Greszta-Franz
Dorota Greszta-Franz 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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Publication number: 20110281965Abstract: The invention relates to the use of polyurethane casting compounds for producing light-resistant compact or expanded polyurethane or polyurethane urea bodies that are characterized by exceptionally good mechanical and visual properties and particularly have a very high heat shape retention.Type: ApplicationFiled: January 13, 2010Publication date: November 17, 2011Applicant: Bayer MateialScience AGInventors: Hans-Josef Laas, Jens Krause, Reinhard Halpaap, Christian Wamprecht, Dorota Greszta-Franz
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Publication number: 20110281966Abstract: The invention relates to the use of polyurethane sealing compounds for the production of light-fast compact or foamed polyurethane bodies or polyurethane urea bodies which have excellent mechanical and optical properties and especially a very high thermostability.Type: ApplicationFiled: January 13, 2010Publication date: November 17, 2011Inventors: Dorota Greszta-Franz, Hans-Josef Laas, Jens Krause, Dieter Mager, Christian Wamprecht
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Publication number: 20110229645Abstract: Composition and process for low temperature curing of polyuretdione-polyol compositions in which the polyuretdione is prepared from a polyisocyanate with isocyanate groups and a polyol containing primary hydroxyl groups. The catalyst for the composition and process is an amine catalyst containing the group —N?C—N—, being aprotic, having a pKa greater than 20 and upon addition to the liquid coating composition causing a phase-change of the coating composition from liquid to solid at 25° C. and 1 atm. within one week.Type: ApplicationFiled: March 19, 2010Publication date: September 22, 2011Applicants: Bayer MaterialScience LLC, Bayer MaterialScience AG, PPG Industries, Inc.Inventors: Myron W. Shaffer, Abdullah Ekin, Carol L. Kinney, Dorota Greszta-Franz, Jonathan T. Martz, Jun Deng, Deborah E. Hayes, Stephen J. Thomas
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Patent number: 7960446Abstract: A process for preparing binders containing allophanate groups which contain, at the oxygen atom of the allophanate group that is bonded via two single bonds, organic radicals with activated groups capable of participating in a polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation; the process includes reacting A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups capable of participating in a polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation, and C) optionally further NCO-reactive compounds, and D) in the presence of one or more compounds containing phenoxide groups, as catalysts. The binders can be used in preparing coatings, coating materials, coating compositions, adhesives, printing inks, casting resins, dental compounds, sizes, photoresists, stereolithography systems, resins for composite materials and sealants.Type: GrantFiled: February 22, 2008Date of Patent: June 14, 2011Assignee: Bayer MaterialScience AGInventors: Christophe Dètrembleur, Jan Weikard, Dorota Greszta-Franz, Frank Richter, Wolfgang Fischer, Jörg Schmitz, Holger Mundstock
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Publication number: 20110124805Abstract: The present invention relates to a process for preparing radiation-curing binders containing allophanate groups by reacting at temperatures of ?130° C. A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups), C) optionally NCO-reactive compounds other than B), in the presence of D) a catalyst containing at least one zinc compound, to form allophanate groups by opening the uretdione ring. The present invention also relates to the binders obtained by the process of the invention and to coating compositions containing these binders.Type: ApplicationFiled: January 27, 2011Publication date: May 26, 2011Applicant: Bayer MaterialScience AGInventors: Jan Weikard, Christophe Detrembleur, Dorota Greszta-Franz, Frank Richter, Wolfgang Fischer, Jörg Schmitz, Holger Mundstock
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Patent number: 7919552Abstract: The present invention relates to polyurethane powder lacquers with optimized flow behavior, a process for their production, a process for coating substrates with these powder lacquers, as well as substrates coated with these powder lacquers.Type: GrantFiled: September 19, 2007Date of Patent: April 5, 2011Assignee: Bayer MaterialScience AGInventors: Michael Grahl, Hans-Josef Laas, Dorota Greszta-Franz, Reinhard Halpaap
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Patent number: 7902315Abstract: The present invention relates to a process for preparing radiation-curing binders containing allophanate groups by reacting at temperatures of ?130° C. A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups), C) optionally NCO-reactive compounds other than B), in the presence of D) a catalyst containing at least one zinc compound, to form allophanate groups by opening the uretdione ring.Type: GrantFiled: September 1, 2005Date of Patent: March 8, 2011Assignee: Bayer MaterialScience AGInventors: Jan Weikard, Christophe Detrembleur, Dorota Greszta-Franz, Frank Richter, Wolfgang Fischer, Jörg Schmitz, Holger Mundstock
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Patent number: 7767778Abstract: The present invention relates to polyurethane powder coating compositions that do not split off blocking agents and have a low stoving temperature. The powder coating compositions contain a hydroxyl functional binder component having a content of carboxyl groups of from 0.5 to 2.0 wt. %, a polyaddition compound, at least one zinc compound as a hardening catalyst, and a compound reactive to carboxyl groups.Type: GrantFiled: March 30, 2005Date of Patent: August 3, 2010Assignee: Bayer MaterialScience AGInventors: James Rawlins, Michael Grahl, Dorota Greszta-Franz, Hans-Josef Laas, Reinhard Halpaap
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Publication number: 20080214691Abstract: A process for preparing binders containing allophanate groups which contain, at the oxygen atom of the allophanate group that is bonded via two single bonds, organic radicals with activated groups capable of participating in a polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation; the process includes reacting A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups capable of participating in a polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation, and C) optionally further NCO-reactive compounds, and D) in the presence of one or more compounds containing phenoxide groups, as catalysts. The binders can be used in preparing coatings, coating materials, coating compositions, adhesives, printing inks, casting resins, dental compounds, sizes, photoresists, stereolithography systems, resins for composite materials and sealants.Type: ApplicationFiled: February 22, 2008Publication date: September 4, 2008Inventors: Christophe Detrembleur, Jan Weikard, Dorota Greszta-Franz, Frank Richter, Wolfgang Fischer, Jorg Schmitz, Holger Mundstock
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Publication number: 20080182928Abstract: The present invention relates to polyurethane powder lacquers with optimized flow behavior, a process for their production, a process for coating substrates with these powder lacquers, as well as substrates coated with these powder lacquers.Type: ApplicationFiled: September 19, 2007Publication date: July 31, 2008Inventors: Michael Grahl, Hans-Josef Laas, Dorota Greszta-Franz, Reinhard Halpaap
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Patent number: 7381785Abstract: Process for preparing binders including reacting A) one or more NCO-functional compounds containing uretdione groups with B) one or more compounds containing groups capable of participating in polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation, and contain isocyanate-reactive groups, followed by C) reaction with one or more hydroxyl-containing compounds other than B), wherein at least one of these compounds has an OH functionality of?2, D) in the presence of one or more compounds containing phenoxide groups, as catalysts, and E) optionally auxiliaries and additives, where the reaction with compounds of component C) proceeds at least proportionally with the formation of allophanate groups and where and including binders containing allophanate groups and groups capable of participating in a polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation, and optionally also contain NCO-reactive groups.Type: GrantFiled: March 14, 2005Date of Patent: June 3, 2008Assignee: Bayer MeterialScience AGInventors: Christophe Dètrembleur, Jan Weikard, Dorota Greszta-Franz, Wolfgang Fischer, Jörg Schmitz, Holger Mundstock
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Patent number: 7361723Abstract: A process for preparing binders containing allophanate groups which contain, at the oxygen atom of the allophanate group that is bonded via two single bonds, organic radicals with activated groups capable of participating in a polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation; the process includes reacting A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups capable of participating in a polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation, and C) optionally further NCO-reactive compounds, and D) in the presence of one or more compounds containing phenoxide groups, as catalysts. The binders can be used in preparing coatings, coating materials, coating compositions, adhesives, printing inks, casting resins, dental compounds, sizes, photoresists, stereolithography systems, resins for composite materials and sealants.Type: GrantFiled: March 14, 2005Date of Patent: April 22, 2008Assignee: Bayer Materialscience AGInventors: Christophe Dètrembleur, Jan Weikard, Dorota Greszta-Franz, Frank Richter, Wolfgang Fischer, Jörg Schmitz, Holger Mundstock
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Publication number: 20070004856Abstract: The present invention relates to a process for preparing self-crosslinking polyurethane dispersions by I) reacting a1) polyisocyanates with a2) at least one hydroxyl component having an average OH functionality of ?2 and a number average molecular weight of 62 to 2500 g/mol, wherein the hydroxyl component contains at least one acid-functional compound containing at least one isocyanate-reactive group, to form an NCO-functional and optionally OH-functional prepolymer, II) then reacting the NCO-functional and optionally OH-functional prepolymer with a3) a hydroxyl component having an average OH functionality of >1 and a4) optionally another polyisocyanate component, which may be the same as or different from a1), to form an OH-functional and NCO-free polyurethane, III) adding a blocked polyisocyanate either before, during or after the reaction of steps I) and II), or forming a blocked polyisocyanate in situ from a polyisocyanate and a blocking agent after the reaction of step II) has taken place, IV) neutralType: ApplicationFiled: June 27, 2006Publication date: January 4, 2007Inventors: Jan Mazanek, Dorota Greszta-Franz, Sebastian Dorr, Jurgen Meixner, Reinhard Halpaap, Helmut Muller, Olaf Fleck, Heino Muller
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Patent number: 7148374Abstract: The present invention relates to novel blocked, elimination-free polyurethane (PUR) crosslinking agents, to a process for their preparation and to their use as starting components for the production of polyurethane plastics, especially as crosslinking agents for thermally crosslinkable powder coatings.Type: GrantFiled: December 17, 2003Date of Patent: December 12, 2006Assignee: Bayer AktiengesellschaftInventors: Dorota Greszta-Franz, Christoph Gürtler, Reinhard Halpaap, Michael Schelhaas, Michael Grahl
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Publication number: 20060149019Abstract: The present invention relates to aqueous coating compositions containing A) at least one polyisocyanate which contains an average of at least two NCO groups per molecule and in which at least 85% of the NCO groups are blocked with a blocking agent selected from ?-caprolactam and/or a hydroxycarboxylic acid, and B) at least one hydrophilic polyester polyol containing an average of at least two reactive hydroxyl groups per molecule, or a mixture of hydrophilic and non-hydrophilic polyester polyols, wherein component B) has an acid number of ?15 mg KOH/g, a hydroxyl number of 20 to 300 mg KOH/g and a weight average molecular weight, Mw, of >1500 g/mol, wherein the equivalent ratio between the blocked isocyanate groups of component A) and the isocyanate-reactive groups of component B) is 0.5 to 5.0:1.Type: ApplicationFiled: December 13, 2005Publication date: July 6, 2006Inventors: Christian Wamprecht, Jan Mazanek, Beate Baumbach, Wolfram Kuttner, Dorota Greszta-Franz
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Publication number: 20060089481Abstract: The present invention is directed to blocked biuret group-containing polyisocyanate compositions, wherein the blocking agent is selected from the group consisting of di-C1-C12-alkyl and/or alkoxyalkyl malonates and acetoacetic acid C1-C12-alkyl and/or alkoxyalkyl esters.Type: ApplicationFiled: October 21, 2004Publication date: April 27, 2006Inventors: Richard Roesler, Yuliya Berezkin, Carol Kinney, Kyli Martin, Myron Shaffer, Poli Yu, Dorota Greszta-Franz, Reinhard Halpaap, Joachim Petzoldt
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Publication number: 20060052526Abstract: The present invention relates to a process for preparing radiation-curing binders containing allophanate groups by reacting at temperatures of ?130° C. A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups), C) optionally NCO-reactive compounds other than B), in the presence of D) a catalyst containing at least one zinc compound, to form allophanate groups by opening the uretdione ring. The present invention also relates to the binders obtained by the process of the invention and to coating compositions containing these binders.Type: ApplicationFiled: September 1, 2005Publication date: March 9, 2006Inventors: Jan Weikard, Christophe Detrembleur, Dorota Greszta-Franz, Frank Richter, Wolfgang Fischer, Jorg Schmitz, Holger Mundstock
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Publication number: 20060052527Abstract: The invention relates to a process for preparing binders which contain 1) allophanate groups, 2) groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups) and 3) optionally NCO-reactive groups, by reacting at temperatures ?130° C. A) one or more NCO-functional compounds containing uretdione groups with B) one or more compounds that contain isocyanate-reactive groups and groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups), and then C) with one or more saturated, hydroxyl-containing compounds other than B), at least one of these compounds having an OH functionality of ?2, in the presence of D) a catalyst containing one or more zinc compounds, the reaction with compounds C) taking place at least proportionally with the formation of allophanate groups. The present invention also relates to the binders obtained by the process of the invention.Type: ApplicationFiled: September 1, 2005Publication date: March 9, 2006Inventors: Jan Weikard, Dorota Greszta-Franz, Wolfgang Fischer, Jorg Schmitz, Holger Mundstock, Christophe Detrembleur
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Publication number: 20050222364Abstract: The present invention relates to polyurethane powder coating compositions containing A) a hydroxyl-functional binder component, which is solid below 40° C. and liquid above 130° C., has a content of carboxyl groups (calculated as COOH; molecular weight 45) of 0.5 to 2.0 wt. %, and contains at least one polymeric polyol having an OH number of 15 to 200 mg KOH/g and a number average molecular weight of 400 to 10,000 and B) a polyaddition compound which contains uretdione groups and optionally free isocyanate groups, is solid below 40° C. and liquid above 125° C., and is prepared from aliphatic and/or cycloaliphatic diisocyanates, C) at least one zinc compound as hardening catalyst, and D) a compound which has a number average molecular weight of 200 to 5000 and contains groups reactive to carboxyl groups, wherein i) components A) and B) are present in amounts such that 0.8 to 2.Type: ApplicationFiled: March 30, 2005Publication date: October 6, 2005Inventors: James Rawlins, Michael Grahl, Dorota Greszta-Franz, Hans-Josef Laas, Reinhard Halpaap
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Publication number: 20050209361Abstract: Process for preparing binders including reacting A) one or more NCO-functional compounds containing uretdione groups with B) one or more compounds containing groups capable of participating in polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation, and contain isocyanate-reactive groups, followed by C) reaction with one or more hydroxyl-containing compounds other than B), wherein at least one of these compounds has an OH functionality of ?2, D) in the presence of one or more compounds containing phenoxide groups, as catalysts, and E) optionally auxiliaries and additives, where the reaction with compounds of component C) proceeds at least proportionally with the formation of allophanate groups and where and including binders containing allophanate groups and groups capable of participating in a polymerization reaction with ethylenically unsaturated compounds on exposure to actinic radiation, and optionally also contain NCO-reactive groups.Type: ApplicationFiled: March 14, 2005Publication date: September 22, 2005Inventors: Christophe Detrembleur, Jan Weikard, Dorota Greszta-Franz, Wolfgang Fischer, Jorg Schmitz, Holger Mundstock