Patents by Inventor Pantea Nazaran
Pantea Nazaran 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: 10640604Abstract: The present invention relates to hydrophilized polyurethanes having a particularly high content of hydroxy-functional, unsaturated triglycerides, to a process for preparing polyurethane dispersions based thereon, to the use of the dispersions as binders in oxidatively drying coating materials having particularly high chemical resistance, and to articles and substrates coated with these coating materials.Type: GrantFiled: December 6, 2016Date of Patent: May 5, 2020Assignee: Covestro Deutschland AGInventors: Michael Ludewig, Maria Almato Guiteras, Pantea Nazaran, Eva Tejada Rosales
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Publication number: 20180118971Abstract: The present invention relates to an aqueous polyurethane-polyacrylate dispersion, obtainable by radical polymerization of a component A), comprising an ethylenically unsaturated compound, at least in the presence of a component B), comprising water and a polyurethane resin, obtainable by reaction of the following synthesis components I), comprising at least one aliphatic, cycloaliphatic, araliphatic and/or aromatic compound having at least two or more isocyanate groups, II), comprising at least one polycarbonate polyol having an average molecular weight of 500 to 3000 g/mol, III), comprising at least one anionically hydrophilizing compound which has at least one OH- or NH-functional group and comprising a carboxyl and/or carboxylate group, IV), comprising at least one polyol and/or polyamine having an average molecular weight of between ?62 and ?500 g/mol, and optionally V), comprising at least one or more monoalcohols and/or monoamines, the radical polymerization being initiated using a hydrophilic initiatorType: ApplicationFiled: April 12, 2016Publication date: May 3, 2018Inventors: Pantea Nazaran, Rolf Gertzmann, Tanja Hebestreit
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Patent number: 9790317Abstract: The present invention relates to an aqueous polyurethane dispersion obtainable by the reaction of at least: (A) one polyisocyanate with two or more isocyanate groups, (B) one polyester component comprising (B1) a polyesterpolyol with a mean molecular weight of 300 to 900 g/Mol, having structural units derived from terephthalic acid, (C) one ionic group introducing compound with at least one sulphonate and/or carboxylate group and at least one isocyanate reactive group, (D) one diol with a mean molecular weight of 62 to 400 g/Mol, (E) one polyol with a mean molecular weight of 62 to 400 g/Mol, having three or more hydroxyl groups, (F) one amino functional and/or aminohydroxyl functional compound, its use to coat a substrate and a coating obtained by using the dispersion.Type: GrantFiled: July 23, 2013Date of Patent: October 17, 2017Assignee: Covestro Deutschland AGInventors: Pantea Nazaran, Rolf Gertzmann, Hiroshi Morita, Nakao Makoto
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Publication number: 20170166685Abstract: The present invention relates to hydrophilized polyurethanes having a particularly high content of hydroxy-functional, unsaturated triglycerides, to a process for preparing polyurethane dispersions based thereon, to the use of the dispersions as binders in oxidatively drying coating materials having particularly high chemical resistance, and to articles and substrates coated with these coating materials.Type: ApplicationFiled: December 6, 2016Publication date: June 15, 2017Inventors: Michael Ludewig, Maria Almato Guiteras, Pantea Nazaran, Eva Tejada
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Patent number: 9650467Abstract: The invention relates to a cationically hydrophilized polyurethaneurea characterized in that it is synthesized from a) at least one aliphatic, araliphatic and/or cycloaliphatic polyisocyanate, b) polyols having a number-average molecular weight Mn?400 and ?6000 g/mol and a hydroxyl functionality of ?1.Type: GrantFiled: November 13, 2015Date of Patent: May 16, 2017Assignee: Covestro Deutschland AGInventors: Pantea Nazaran, Rolf Gertzmann, Juan Miguel Garcia Martinez, Maria Almato Guiteras, Eva Tejada
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Patent number: 9624387Abstract: The invention is directed to a one-component (1K) coating system comprising an aqueous polyacrylate polymer dispersion and one or more compounds of elements of sub-groups 5 and/or 6 of the periodic table in which the particular element has an oxidation state of at least +4.Type: GrantFiled: February 14, 2012Date of Patent: April 18, 2017Assignee: Covestro Deutschland AGInventors: Rolf Gertzmann, Pantea Nazaran, Joan Miguel Garcia Martinez, Maria Almato Guiteras
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Publication number: 20160137773Abstract: The invention relates to a cationically hydrophilized polyurethaneurea characterized in that it is synthesized from a) at least one aliphatic, araliphatic and/or cycloaliphatic polyisocyanate, b) polyols having a number-average molecular weight Mn?400 and ?6000 g/mol and a hydroxyl functionality of ?1.Type: ApplicationFiled: November 13, 2015Publication date: May 19, 2016Inventors: Pantea Nazaran, Rolf Gertzmann, Juan Miguel Garcia Martinez, Maria Almato Guiteras, Eva Tejada
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Patent number: 9321939Abstract: Method for the production of adhesive-coated articles, articles obtainable thereby and their use A method for the production of adhesive-coated articles comprises the steps of: (I) providing a substrate; (II) applying a first polyurethane and/or polyurethane-polyurea polymer onto the substrate, the first polyurethane and/or polyurethane-polyurea polymer being capable of attaining an at least partially crystalline state with a final degree of crystallinity and wherein during and/or after the application the first polyurethane and/or polyurethane-polyurea polymer is present in a non-crystalline state.Type: GrantFiled: September 14, 2011Date of Patent: April 26, 2016Assignee: Covestro Deutschland AGInventors: Jörg Büchner, Harald Kraus, Pantea Nazaran, Matthias Wintermantel
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Patent number: 9195215Abstract: This invention relates to a holographic medium comprising a protective layer and a photopolymer film which is bonded to the protective layer and contains polyurethane matrix polymers, acrylate writing monomers and photoinitiators, wherein the protective layer is impermeable to the constituents of the photopolymer film, is optically clear and is transparent to electromagnetic radiation having a wavelength in the range of from 350 to 800 nm. The invention further provides the use of a holographic medium according to the invention in the production of holograms, and a process for the production of a holographic medium according to the invention.Type: GrantFiled: November 11, 2012Date of Patent: November 24, 2015Assignee: Bayer Intellectual Property GmbHInventors: Marc-Stephan Weiser, Daniel Hentschel, Joachim Petzoldt, Pantea Nazaran, Sebastian Dörr, Dirk Dijkstra, Ute Flemm, Dennis Hönel, Friedrich-Karl Bruder, Thomas Fäcke, Thomas Rölle
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Publication number: 20150175737Abstract: The present invention relates to an aqueous polyurethane dispersion obtainable by the reaction of at least: (A) one polyisocyanate with two or more isocyanate groups, (B) one polyester component comprising (B1) a polyesterpolyol with a mean molecular weight of 300 to 900 g/Mol, having structural units derived from terephthalic acid, (C) one ionic group introducing compound with at least one sulphonate and/or carboxylate group and at least one isocyanate reactive group, (D) one diol with a mean molecular weight of 62 to 400 g/Mol, (E) one polyol with a mean molecular weight of 62 to 400 g/Mol, having three or more hydroxyl groups, (F) one amino functional and/or aminohydroxyl functional compound, its use to coat a substrate and a coating obtained by using the dispersion.Type: ApplicationFiled: July 23, 2013Publication date: June 25, 2015Inventors: Pantea Nazaran, Rolf Gertzmann, Hiroshi Morita, Nakao Makoto
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Patent number: 8980407Abstract: The invention relates to an aqueous adhesive composition containing at least one acrylate polymer with a glass transition temperature Tg>50° C. and at least one amorphous polyurethane or polyurethane-polyurea polymer with a glass transition temperature Tg<+10° C., the use of the adhesive compositions for the manufacture of heat-activated adhesive layers, and planar formations containing adhesive layers based on the adhesive composition.Type: GrantFiled: June 3, 2011Date of Patent: March 17, 2015Assignee: Bayer Intellectual Property GmbHInventors: Jörg Büchner, Harald Kraus, Pantea Nazaran, Dirk Dijkstra
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Publication number: 20140295329Abstract: This invention relates to a holographic medium comprising a protective layer and a photopolymer film which is bonded to the protective layer and contains polyurethane matrix polymers, acrylate writing monomers and photoinitiators, wherein the protective layer is impermeable to the constituents of the photopolymer film, is optically clear and is transparent to electromagnetic radiation having a wavelength in the range of from 350 to 800 nm. The invention further provides the use of a holographic medium according to the invention in the production of holograms, and a process for the production of a holographic medium according to the invention.Type: ApplicationFiled: November 11, 2012Publication date: October 2, 2014Applicant: Bayer Intellectual Property GmbHInventors: Marc-Stephan Weiser, Daniel Hentschel, Joachim Petzoldt, Pantea Nazaran, Sebastian Dörr, Dirk Dijkstra, Ute Flemm, Dennis Hönel, Friedrich-Karl Bruder, Thomas Fäcke, Thomas Rölle
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Publication number: 20140017449Abstract: The invention is directed to a one-component (1K) coating system comprising an aqueous polyacrylate polymer dispersion and one or more compounds of elements of sub-groups 5 and/or 6 of the periodic table in which the particular element has an oxidation state of at least +4.Type: ApplicationFiled: February 14, 2012Publication date: January 16, 2014Inventors: Rolf Gertzmann, Pantea Nazaran, Joan Miquel Garcia Martinez, Maria Almato Guiteras
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Publication number: 20130220543Abstract: Method for the production of adhesive-coated articles, articles obtainable thereby and their use A method for the production of adhesive-coated articles comprises the steps of: (I) providing a substrate; (II) applying a first polyurethane and/or polyurethane-polyurea polymer onto the substrate, the first polyurethane and/or polyurethane-polyurea polymer being capable of attaining an at least partially crystalline state with a final degree of crystallinity and wherein during and/or after the application the first polyurethane and/or polyurethane-polyurea polymer is present in a non-crystalline state.Type: ApplicationFiled: September 14, 2011Publication date: August 29, 2013Applicant: Bayer Intellectual Property GmbHInventors: Jörg Büchner, Harald Kraus, Pantea Nazaran, Matthias Wintermantel
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Publication number: 20130143010Abstract: The invention relates to an aqueous adhesive composition containing at least one acrylate polymer with a glass transition temperature Tg>50° C. and at least one amorphous polyurethane or polyurethane-polyurea polymer with a glass transition temperature Tg<+10° C., the use of the adhesive compositions for the manufacture of heat-activated adhesive layers, and planar formations containing adhesive layers based on the adhesive composition.Type: ApplicationFiled: June 3, 2011Publication date: June 6, 2013Applicant: Bayer Intellectual Property GmbH Creative Campus MonheimInventors: Jörg Büchner, Harald Kraus, Pantea Nazaran, Dirk Dijkstra