Patents by Inventor Carmen-Elena Cimpeanu
Carmen-Elena Cimpeanu 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: 8980437Abstract: The use of polyelectrolyte complexes is described, for providing an oxygen barrier to packaging materials made of polymer foils. Polymeric components of the polyelectrolyte complex are applied in polymerized form to the polymer foil. The polymer foil is either coated with an aqueous dispersion comprising a dispersed polyelectrolyte complex previously produced by water-in-water emulsion polymerization, or is coated with a composition comprising a polyelectrolyte complex produced from anionic polymer and from cationic surfactant, or the polymer foil is coated with at least three alternating layers, where respectively one of two adjacent layers comprises an anionic polyelectrolyte component and the other of two adjacent layers comprises a cationic polyelectrolyte component, and polyelectrolyte complexes form at the opposite, adjacent interfaces of the alternating layers.Type: GrantFiled: August 17, 2010Date of Patent: March 17, 2015Assignee: BASF SEInventors: Carmen-Elena Cimpeanu, Thomas Breiner, Dieter Urban, Karl-Heinz Schumacher, Volker Schaedler, Heiko Diehl, Hermann Seyffer
-
Publication number: 20140342171Abstract: Described is an aqueous polymer dispersion comprising a chain growth addition polymer obtainable via free-radically initiated emulsion polymerization from ethylenically unsaturated, free-radically polymerizable monomers, wherein the chain growth addition polymer is formed to an extent of not less than 60 wt % from primary monomers selected from vinylaromatic compounds, conjugated aliphatic dienes, vinyl esters of saturated C1- to C20-carboxylic acids, esters of acrylic acid or of methacrylic acid with monohydric C1- to C20-alcohols, aliphatic hydrocarbons having 2 to 8 carbon atoms and one or two double bonds, or mixtures thereof, wherein the monomers are polymerized in the presence of lignosulfonate and wherein the chain growth addition polymer is branched or crosslinked. Also described is a process for preparing the aqueous polymer dispersion. The polymer dispersion is useful for preparing paper coating compositions.Type: ApplicationFiled: February 11, 2013Publication date: November 20, 2014Applicant: BASF SEInventors: Rabie Al-Hellani, Carmen-Elena Cimpeanu, Juergen Schmidt-Thuemmes, Dirk Lawrenz, Kristina Georgieva, Anja Song
-
Publication number: 20140302335Abstract: A paper coating slip additive obtainable by free-radical polymerization, its preparation and its use in paper coating compositions are described. The additive is formed from (a) acid monomers selected from ethylenically unsaturated C3 to C8 carboxylic acids, (b) associative monomers of the general formula H2C?CR1—COO-(EO)n—(PO)m—R2 where R1 is hydrogen or methyl, n is at least two, m is from zero to 50, EO is an ethylene oxide group, PO is a propylene oxide group and R 2 is a C8-C30 alkyl group or a C8-C30 alkaryl group, and (c) nonionic copolymerizable monomers other than a) and b), wherein said additive has a weight average molecular weight of below 200 000 and wherein tert-dodecyl mercaptan is used as chain transfer agent.Type: ApplicationFiled: November 7, 2012Publication date: October 9, 2014Applicant: BASF SEInventors: Hermann Seyffer, Carmen-Elena Cimpeanu, Anja Song, Thomas Steinmacher, Joerg Claussen, Philipp Zacharias, Vijay Raman, Petra Schoecker
-
Publication number: 20140275415Abstract: A finely divided, starch-containing polymer dispersion which is obtainable by free radical emulsion polymerization of ethylenically unsaturated monomers in the presence of at least one redox initiator and starch, wherein (a) from 0 to less than 40% by weight of at least one optionally substituted styrene, (b) from greater than 60 to 100% by weight of at least one C1-C12-alkyl acrylate and/or C1-C12-alkyl methacrylate, (c) from 0 to 10% by weight of at least one other ethylenically unsaturated copolymerizable monomer, are used as the ethylenically unsaturated monomers, the sum (a)+(b)+(c) being 100% and being based on the active monomer content and (d) from 15 to 40% by weight of at least one degraded starch which has a molar mass Mw of from 1000 to 65000 g/mol, based on the total weight of solids content of components (a)+(b)+(c)+(d), are used as the starch, and the polymerization being carried out in the presence of at least 0.Type: ApplicationFiled: October 11, 2012Publication date: September 18, 2014Applicant: BASF SEInventors: Carmen-Elena Cimpeanu, Holger Kern, Petra Arnold, Christoph Hamers
-
Patent number: 8771812Abstract: Described is paper or cardboard packaging produced from mineral oil contaminated, recycled paper, wherein the packaging includes a barrier layer obtainable by applying an aqueous polymeric dispersion comprising a copolymer obtainable by emulsion polymerization of C1-C4 alkyl(meth)acrylates, acid monomers, e.g., acrylic acid or methacrylic acid, 0-20 wt % of acrylonitrile and 0 to 10 wt % of further monomers, wherein the glass transition temperature of the copolymer is in the range from +10 to +45° C. The barrier layer may be situated on one of the surfaces of the packaging or form one of multiple layers of a multilayered packaging coating or be situated as a coating on one side of an inner bag situated within the packaging.Type: GrantFiled: May 29, 2012Date of Patent: July 8, 2014Assignee: BASF SEInventors: Hermann Seyffer, Carmen-Elena Cimpeanu, Ines Pietsch, Axel Weiss, Peter Preishuber-Pfluegl, Heiko Diehl, Marc Bothe, Florian Buesch
-
Patent number: 8747955Abstract: A description is given of a method of producing packaging, the packaging surface being coated with a polyelectrolyte complex, and the polyelectrolyte complex being composed of at least one first polymer and at least one second polymer, the first polymer being an anionic polymer and the second polymer being a cationic polymer. The packaging is distinguished by good fat barrier properties.Type: GrantFiled: August 13, 2009Date of Patent: June 10, 2014Assignee: BASF SEInventors: Carmen-Elena Cimpeanu, Thomas Breiner, Dieter Urban, Hermann Seyffer, Volker Schaedler, Robert Feuerhake, Soumyajit Roy, Michel Awkal
-
Publication number: 20120308749Abstract: Paper or cardboard packaging produced from recycled paper contaminated by mineral oil, where the packaging includes a barrier layer obtained by applying an aqueous polymeric dispersion containing a mixture of at least two polymers A and B. Polymer A is obtained by emulsion polymerization of C1-C4 alkyl(meth)acrylates, acid monomers, e.g., acrylic acid or methacrylic acid, 0-20 wt % of acrylonitrile and 0-10 wt % of further monomers, where the glass transition temperature of copolymer A is greater than +45° C. and the glass transition temperature of polymer B is less than +10° C. The mean value calculated from the glass transition temperatures of the individual polymers is +10 to +45° C. The barrier layer may be situated on one of the surfaces of the packaging or form one of multiple layers of a multilayered packaging coating or be situated as a coating on one side of an inner bag situated within the packaging.Type: ApplicationFiled: May 30, 2012Publication date: December 6, 2012Applicant: BASF SEInventors: Hermann Seyffer, Carmen-Elena Cimpeanu, Heiko Diehl
-
Publication number: 20120305436Abstract: Described is paper or cardboard packaging produced from mineral oil contaminated, recycled paper, wherein the packaging includes a barrier layer obtainable by applying an aqueous polymeric dispersion comprising a copolymer obtainable by emulsion polymerization of C1-C4 alkyl (meth)acrylates, acid monomers, e.g., acrylic acid or methacrylic acid, 0-20 wt % of acrylonitrile and 0 to 10 wt % of further monomers, wherein the glass transition temperature of the copolymer is in the range from +10 to +45° C. The barrier layer may be situated on one of the surfaces of the packaging or form one of multiple layers of a multilayered packaging coating or be situated as a coating on one side of an inner bag situated within the packaging.Type: ApplicationFiled: May 29, 2012Publication date: December 6, 2012Applicant: BASF SEInventors: Hermann SEYFFER, Carmen-Elena Cimpeanu, Ines Pietsch, Axel Weiss, Peter Preishuber-Pflügl, Heiko Diehl, Marc Bothe, Florian Büsch
-
Publication number: 20120244350Abstract: An adhesive is described, in particular for applications on substrate materials made of flexible PVC, comprising a polymer which is obtainable via free-radical polymerization of ethylenically unsaturated compounds and which is composed of at least 50% by weight of soft acrylate monomers with glass transition temperature below 0° C., at least 1% by weight of ethylenically unsaturated nitriles, at least 1% by weight of hard acrylate monomers with glass transition temperature of at least 60° C., at least 0.1% by weight of ethylenically unsaturated acid monomers, and at least 0.01% by weight of monomers having at least two non-conjugated, polymerizable vinyl groups, where the polymerization reaction takes place via staged polymerization, and at least one portion of the soft acrylate monomers is polymerized in a first polymerization stage, and at least one portion of the hard acrylate monomers is polymerized in a second or subsequent polymerization stage.Type: ApplicationFiled: December 6, 2010Publication date: September 27, 2012Applicant: BASF SEInventors: Carmen-Elena Cimpeanu, Cornelis Petrus Beyers, Andree Dragon
-
Publication number: 20120148836Abstract: The use of polyelectrolyte complexes as plasticizer barrier is described, in particular those formed from anionic polymer and from cationic polymer, as also are plasticized substrates and production of the same, where the plasticized substrates have been coated with at least one layer which comprises at least one polyelectrolyte complex.Type: ApplicationFiled: August 12, 2010Publication date: June 14, 2012Applicant: BASF SEInventors: Carmen-Elena Cimpeanu, Thomas Breiner, Dieter Urban, Karl-Heinz Schumacher, Axel Weiss, Axel Meyer, Soumyajit Roy
-
Publication number: 20120148855Abstract: The use of polyelectrolyte complexes is described, for providing an oxygen barrier to packaging materials made of polymer foils. Polymeric components of the polyelectrolyte complex are applied in polymerized form to the polymer foil. The polymer foil is either coated with an aqueous dispersion comprising a dispersed polyelectrolyte complex previously produced by water-in-water emulsion polymerization, or is coated with a composition comprising a polyelectrolyte complex produced from anionic polymer and from cationic surfactant, or the polymer foil is coated with at least three alternating layers, where respectively one of two adjacent layers comprises an anionic polyelectrolyte component and the other of two adjacent layers comprises a cationic polyelectrolyte component, and polyelectrolyte complexes form at the opposite, adjacent interfaces of the alternating layers.Type: ApplicationFiled: August 17, 2010Publication date: June 14, 2012Applicant: BASF SEInventors: Carmen-Elena Cimpeanu, Thomas Breiner, Dieter Urban, Karl-Heinz Schumacher, Volker Schaedler, Heiko Diehl, Hermann Seyffer
-
Publication number: 20120048463Abstract: A method is described for adhesively bonding labels to a substrate, in which a radiation-crosslinkable pressure-sensitive adhesive is applied to the label or to the substrate, label and substrate are brought together and bonded to one another, the pressure-sensitive adhesive, prior to bonding, is crosslinked by irradiation, with UV light, for example, with a radiation dose of 6 to 18 mJ/cm2, and the pressure-sensitive adhesive, prior to crosslinking, has a glass transition temperature of less than or equal to ?40° C. The labels can be washed off with basic, aqueous wash liquid.Type: ApplicationFiled: August 29, 2011Publication date: March 1, 2012Applicant: BASF SEInventors: Carmen-Elena CIMPEANU, Cornelis Petrus BEYERS, Andree DRAGON, Jose Maria Torres LLOSA, Erika FLAMING, Uwe WERNZ
-
Publication number: 20110151251Abstract: A description is given of an adhesive composition which comprises a polymer preferably in the form of an emulsion polymer in dispersion in water. The emulsion polymer has a glass transition temperature of less than ?61° C. and is preparable by emulsion polymerization at temperatures less than 80° C. from 80-95% by weight of 2-ethylhexyl acrylate and 5-20% by weight of further, ethylenically unsaturated, free-radically copolymerizable monomers, of which 0.2% to 2% by weight, based on the total amount of monomers, are acid-containing comonomers. The adhesive composition can be used in particular as a pressure-sensitive adhesive for producing plasticizer-free, self-adhesive, redetachable paper labels.Type: ApplicationFiled: September 1, 2009Publication date: June 23, 2011Applicant: BASF SEInventors: Karl-Heinz Schumacher, Carmen-Elena Cimpeanu
-
Publication number: 20110143156Abstract: A description is given of a method of producing packaging, the packaging surface being coated with a polyelectrolyte complex, and the polyelectrolyte complex being composed of at least one first polymer and at least one second polymer, the first polymer being an anionic polymer and the second polymer being a cationic polymer. The packaging is distinguished by good fat barrier properties.Type: ApplicationFiled: August 13, 2009Publication date: June 16, 2011Applicant: BASF SEInventors: Carmen-Elena Cimpeanu, Thomas Breiner, Dieter Urban, Hermann Seyffer, Volker Schaedler, Robert Feuerhake, Soumyajit Roy, Michel Awkal