Patents by Inventor Hans-Jurgen Denu
Hans-Jurgen Denu 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: 20120157577Abstract: The present invention relates to aqueous multistage polymer dispersions obtainable by free-radically initiated aqueous emulsion polymerization, having a soft phase and a hard phase, and a hard-to-soft stage ratio of 25% to 95% by weight to 75% to 5% by weight, the glass transition temperature (Tg) of the soft phase, as first stage, being ?30 to 0° C. and that of the hard phase, as second stage, being 20 to 60° C., comprising at least one monomer of the general formula I in which the variables have the following definitions: n=0 to 2, R1, R2, R3=independently of one another hydrogen or methyl group, X=O or NH, Y=H, alkali metal or NH4, to processes for preparing these aqueous polymer dispersions, and to the use thereof as binders in coatings, and also to coatings comprising the polymer dispersion of the invention.Type: ApplicationFiled: December 21, 2011Publication date: June 21, 2012Applicant: BASF SEInventors: Sebastian ROLLER, Ekkehard Jahns, Hans-Jürgen Denu
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Patent number: 7166355Abstract: The invention relates to the use of microcapsules with latent heat storage materials as capsule cores on gypsum plasterboards, gypsum plasterboards containing the same and a method for production thereof.Type: GrantFiled: August 7, 2002Date of Patent: January 23, 2007Assignee: BASF AktiengesellschaftInventors: Ekkehard Jahns, Hans-Jurgen Denu, Joachim Pakusch, Horst Seibert, Marco Schmidt
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Publication number: 20070004834Abstract: A process for preparing a polymer powder by evaporating the volatile constituents from an aqueous dispersion of a film-forming polymer P, wherein prior to the evaporation of the volatile constituents the aqueous polymer dispersion still comprises drying assistants T, present in an amount of from 0.1 to 80% by weight, based on the polymer P of the dispersion, and there being used as drying assistant T polyvinylformamide. The polyvinylformamide used preferably has a K value (KW), determined by the method of Fikentscher in accordance with DIN 53726, of from 5 to 50.Type: ApplicationFiled: May 10, 2004Publication date: January 4, 2007Applicant: BASF AktiengesellschaftInventors: Joachim Pakusch, Markus Koppers, Wolfgang Gaschier, Heinrich Sack, Jurgen Schmidt-Thummes, Hans-Jurgen Denu
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Patent number: 6872773Abstract: A readily water-redispersible and water-wettable polymer powder is prepared by spray-drying of an aqueous dispersion of polymer particles with admixing of a hydrophilic and of a hydrophobic antiblocking agent.Type: GrantFiled: April 2, 2004Date of Patent: March 29, 2005Assignee: BASF AktiengesellschaftInventors: Joachim Pakusch, Ines Pietsch, Hans-Jürgen Denu, Heinrich Sack, Bernd Reck
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Publication number: 20040234738Abstract: The invention relates to the use of microcapsules with latent heat storage materials as capsule cores on gypsum plasterboards, gypsum plasterboards containing the same and a method for production thereof.Type: ApplicationFiled: February 10, 2004Publication date: November 25, 2004Inventors: Ekkehard Jahns, Hans-Jurgen Denu, Joachim Pakusch, Horst Seibert, Marco Schmidt
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Patent number: 6809148Abstract: Polymer dispersions comprise at least one copolymer which contains, as polymerized monomers, a) from 25 to 70% by weight of at least one conjugated aliphatic diene, b) from 25 to 70% by weight of at least one vinylaromatic monomer, c) from 2.5 to 15% by weight of at least one monoester of a C2-C10-alkanediol with acrylic acid or methacrylic acid or c′) from 0.1 to 10% by weight of at least one alkylpolyethylene glycol (meth)acrylate of the formula (I) where R1 is hydrogen or methyl, R2 is C1-C4-alkyl and n is an integer from 1 to 100, or c″) from 2 to 15% by weight of a mixture of the monoester c) and the alkylpolyethylene glycol (meth)acrylate c′), d) from 0 to 1.0% by weight of ethylenically unsaturated monomers which have at least one acid group, or salts thereof, e) from 0 to 5.0% by weight of ethylenically unsaturated nitriles and f) from 0 to 1.0% by weight of amides of &agr;,&bgr;-ethylenically unsaturated mono- and dicarboxylic acids.Type: GrantFiled: March 10, 2003Date of Patent: October 26, 2004Assignee: BASF AktiengesellschaftInventors: Markus Koppers, Joachim Pakusch, Hermann Anders, Marco Schmidt, Hans-Jürgen Denu
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Publication number: 20040198896Abstract: A readily water-redispersible and water-wettable polymer powder is prepared by spray-drying of an aqueous dispersion of polymer particles with admixing of a hydrophilic and of a hydrophobic antiblocking agent.Type: ApplicationFiled: April 2, 2004Publication date: October 7, 2004Applicant: BASF AktiengesellschaftInventors: Joachim Pakusch, Ines Pietsch, Hans-Jurgen Denu, Heinrich Sack, Bernd Reck
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Publication number: 20040087702Abstract: Clay moldings comprise a mineral material based on clay minerals as the main component and at least one hydrophopic, film-forming polymer uniformly distributed in the molding.Type: ApplicationFiled: March 3, 2003Publication date: May 6, 2004Inventors: Mario Sandor, Manfred Schwartz, Bertold Bechert, Joachim Pakusch, Hans-Jurgen Denu, Dietbert Knofel, Karl-Georg Bottger
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Publication number: 20040047694Abstract: The invention relates to polymer-modified earthwork materials, containing a) a mineral main constituent based on sand, grit and/or gravel and b) at least one hydrophobic synthetic polymer that is uniformly distributed in the mineral main constituent. The invention also relates to a method for the production of said materials and to a method for the fortification of earth.Type: ApplicationFiled: June 16, 2003Publication date: March 11, 2004Inventors: Mario Sandor, Stefan Dreher, Joachim Pakusch, Hans-Jurgen Denu
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Publication number: 20030144386Abstract: Mixtures of finely divided solid hydrogel-forming polymers and of hydraulically setting building materials, wherein not more than 2% by weight of said finely divided hydrogel-forming polymers are more than 200 &mgr;m in particle size. The finely divided solid hydrogel-forming polymers used are in particular crosslinked polymers having acid groups.Type: ApplicationFiled: December 26, 2002Publication date: July 31, 2003Applicant: BASF AktiengesellschaftInventors: Joachim Pakusch, Hans-Jurgen Denu, Ekkehard Jahns, Rudiger Funk, Ulrike Hoss
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Patent number: 6559221Abstract: An aqueous polymer dispersion, wherein the dispersion contains from 0.0001 to 1 mol of a hydrolyzable silicon group and from 0.0001 to 1 mol of a urea or thiourea group, based, in each case, on 100 g of the polymer present in the dispersion.Type: GrantFiled: August 13, 2001Date of Patent: May 6, 2003Assignee: BASF AktiengesellschaftInventors: Mario Sandor, Joachim Pakusch, Wolfgang Hümmer, Hans-Jürgen Denu, Rolf Gulden
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Patent number: 6531179Abstract: The invention describes a method of coating a concrete molding which comprises a) the application of at least one plastic, cement-bound mineral composition to an uncoated mineral molding wherein said plastic composition comprises at least one aqueous polymer dispersion and b) bringing about the setting of the plastic composition, wherein the aqueous polymer dispersion comprises: at least one polymer P in the form of dispersed polymer particles with a glass transition temperature of from −20 to +80° C., the polymer containing not more than 2% by weight of copolymerized monoethylenically unsaturated monomers having an acid group.Type: GrantFiled: December 27, 2000Date of Patent: March 11, 2003Assignee: BASF AktiengesellschaftInventors: Manfred Schwartz, Bertold Bechert, Hans-Jürgen Denu, Eckehardt Wistuba
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Patent number: 6489381Abstract: Cement-based compositions comprising per 100 parts by weight of cement from 1 to 500 parts by weight of a polymer built up from a) 30-99.5% by weight of at least one alkyl ester of (meth)acrylic acid, b) 0-70% by weight of at least one vinylaromatic, c) 0.5-10% by weight of at least one alkyl polyethoxy(meth)acrylate of the formula where R1 is a hydrogen atom or a methyl group, R2 is a C1 to C4 alkyl group and n is an integer from 1 to 55, d) 0-10% by weight of at least one ethylenically unsaturated mono- or dicarboxylic acid, such as acrylic acid, methacrylic acid, maleic acid, itaconic acid, or anhydride, amide or hydroxyalkylamide thereof, e) 0-10% by weight of acrylonitrile or methacrylonitrile, and f) 0-50% by weight of further ethylenically unsaturated compounds other than a) to e).Type: GrantFiled: August 17, 2000Date of Patent: December 3, 2002Assignee: BASF AktiengesellschaftInventors: Stefan Dreher, Joachim Pakusch, Mario Sandor, Bernd Reck, Claudia Wood, Hans-Jürgen Denu
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Patent number: 6469135Abstract: The present invention provides a process for preparing polymer powders by evaporating the volatile constituents from aqueous dispersions of film-forming polymers P in the presence of drying assistants T selected from the salts of oligomeric arylsulfonic acid-formaldehyde condensates wherein prior to the evaporation of the volatile constituents the aqueous polymer dispersion comprises at least 1.5% by weight, preferably at least 1.7% by weight, based on the polymer in the dispersion, of at least one anionic surface-active compound AO having at least one C6-C32 alkyl group; the polymer powders obtainable by the process; and their use in binding mineral building materials.Type: GrantFiled: August 21, 2001Date of Patent: October 22, 2002Assignee: BASF AktiengesellschaftInventors: Mario Sandor, Joachim Pakusch, Heinrich Sack, Markus Koppers, Hans-Jürgen Denu, Rolf Gulden
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Patent number: 6291573Abstract: The present invention relates to a process for preparing polymer powders from aqueous polymer dispersions in which the dispersed polymer P comprises in copolymerized form: i) at least one vinylaromatic monomer (a), ii) 1,3-butadiene as monomer (b), and iii) one or more monomers (c) different than the monomers (a) and (b), which comprises drying the aqueous polymer dispersion in the presence of polyvinyl alcohol as drying agent. The present invention also relates to the polymer powders obtainable by this process and to the use of these polymer powders as binders in paints, varnishes and coating compositions generally, in adhesives, and for modifying mineral construction materials. The present invention also relates to mineral construction materials in the form of dry formulations comprising the polymer powders of the invention.Type: GrantFiled: December 14, 1998Date of Patent: September 18, 2001Assignee: BASF AktiengesellschaftInventors: Joachim Pakusch, Bernd Reck, Peter Claassen, Hans-Jürgen Denu, Eckehardt Wistuba, Claudia Heibel