Patents by Inventor Juergen Dombrowski
Juergen Dombrowski 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: 9932268Abstract: A powdered polyurethane, preferably a powdered recycled polyurethane rigid foam is co-dried with a water insoluble film-forming polymer to obtain a redispersible polymer powder composite for use in hydraulic binders or cementitious compositions to improve performance of cementitious compositions or mortar, in applications such as cement based the adhesives (CBTA), or external thermal insulating composite systems (ETICS).Type: GrantFiled: October 24, 2012Date of Patent: April 3, 2018Assignee: Dow Global Technologies LLCInventors: Juergen Dombrowski, Hartmut Kuehn, Margarita Perello, Sonja Scharlemann
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Patent number: 9745459Abstract: The present invention relates to a water redispersible polymer powder (RDP) which comprises a co-dried admixture of a water-insoluble film forming polymer, a colloidal stabilizer and rubber particles. The presence of rubber within the RDP does not significantly affect redispersibility and may, when incorporated into hydraulically-binding compositions, provide an improvement in the physical properties of the resultant hydraulically bound composition.Type: GrantFiled: December 11, 2013Date of Patent: August 29, 2017Assignee: Dow Global Technologies LLCInventors: Juergen Dombrowski, Hartmut Kuehn, Margarita Perello, Sonja Scharlemann
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Patent number: 9296653Abstract: Dry mix formulations containing a redispersible polymer powder (RDP) made of a low carboxylation, large particle size water-insoluble film-forming styrene butadiene polymer having at least one ethylenically unsaturated dicarboxylic acid monomer, and a high alumina content cement such as a calcium aluminate cement (CAC) or a calcium sulfoaluminate cement (CSA) provides cement compositions having unexpectedly superior water immersion shear strength and set time for a cement containing tile adhesive (CBTA or CTA), superior adhesion properties in water proofing mortars or mortar applications, and superior flexural and compressive strength in grout applications.Type: GrantFiled: December 15, 2011Date of Patent: March 29, 2016Assignee: Dow Global Technologies LLCInventors: Linda Kim-Habermehl, Liang Hong, Sean M. Keenan, Juergen Dombrowski, Hartmut Kuehn, Margarita Perello, Sonja Scharlemann, Liang Zhang
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Styrene-butadiene based redispersible polymer powders with improved stability in cement applications
Patent number: 9199881Abstract: A water redispersible polymer powder is produced by drying an aqueous mixture of a carboxylated styrene butadiene polymer and a colloidal stabilizer which includes a polyvinyl alcohol modified with an alkyl end chain. The alkyl modified polyvinyl alcohol provides excellent redispersibility of the redispersible polymer powder without adversely affecting spray drying. Cement compositions such as mortars, which contain the redispersible polymer powder with the alkyl modified polyvinyl alcohol exhibit unexpectedly superior stability and an unexpectedly lower rate of mortar viscosity buildup which is advantageous for workability or troweling.Type: GrantFiled: September 21, 2011Date of Patent: December 1, 2015Assignee: Dow Global Technologies, LLCInventors: Etienne Lazarus, Gerold Lohmüller, Juergen Dombrowski, Hartmut Kuehn, Margarita Perello, Sonja Scharlemann -
Publication number: 20150322253Abstract: The present invention relates to a water redispersible polymer powder (RDP) which comprises a co-dried admixture of a water-insoluble film forming polymer, a colloidal stabilizer and rubber particles. The presence of rubber within the RDP does not significantly affect redispersibility and may, when incorporated into hydraulically-binding compositions, provide an improvement in the physical properties of the resultant hydraulically bound composition.Type: ApplicationFiled: December 11, 2013Publication date: November 12, 2015Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Juergen DOMBROWSKI, Hartmut KUEHN, Margarita PERELLO, Sonja SCHARLEMANN
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Patent number: 9181130Abstract: Redispersible polymer powder compositions which include a polyglycol in admixture with a redispersible polymer powder (RDP), which powder includes a codried mixture of a carboxylated, water insoluble film-forming styrene butadiene polymer and a colloidal stabilizer, results in cement compositions having unexpectedly superior overall bonding strength and adhesion after water immersion. Use of the polyglycol provides good workability or ease of troweling during application. In addition, the RDP composition, which includes the RDP and the polyglycol, provides the cement-based composition with excellent abrasion resistance, surface appearance, and color. Also, the RDP composition provides for at least a 30% reduction, for example a 50% or more reduction in the amount of retarder or retardant employed in the dry mix formulation for cement compositions, such as self leveling flooring compounds or compositions, and cement-based tile adhesives.Type: GrantFiled: June 14, 2011Date of Patent: November 10, 2015Assignee: Dow Global Technologies LLCInventors: Jürgen Dombrowski, Hartmut Kühn, Margarita Perello, Gerold A. Lohmüller, Etienne Lazarus
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Patent number: 9062143Abstract: Polymer powders comprising in copolymerized form a) one or more vinyl aromatic comonomers, b) one or more 1,3-diene comonomers, c) from 0.1 to 15 percent, based on the total comonomer weight, of one or more comonomers selected from the group consisting of ethylenically unsaturated mono- and dicarboxylic acids and their salts, wherein at least 75 percent of the total number of carboxylic groups present in the polymer are located at the surface of the polymer particles in the powder and at least 75 percent of the carboxylic groups located at the surface of the polymer particles in powder are present in their salt form, and d) from 0 to 40 percent, based on the total comonomer weight, of one or more additional comonomers have an excellent redispersibility in water.Type: GrantFiled: July 29, 2010Date of Patent: June 23, 2015Assignee: Dow Global Technologies LLCInventors: Margarita Perello, Harmut Kühn, Jürgen Dombrowski, Francois M. Casati, Etienne Lazarus, Gerold Lohmüller
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Publication number: 20150087751Abstract: Dry mix formulations containing a redispersible polymer powder (RDP) made of a low carboxylation, large particle size water-insoluble film—forming styrene butadiene polymer having at least one ethylenically unsaturated dicarboxylic acid monomer, and a high alumina content cement such as a calcium aluminate cement (CAC) or a calcium sulfoaluminate cement (CSA) provides cement compositions having unexpectedly superior water immersion shear strength and set time for a cement containing tile adhesive (CBTA or CTA), superior adhesion properties in water proofing mortars or mortar applications, and superior flexural and compressive strength in grout applications.Type: ApplicationFiled: December 15, 2011Publication date: March 26, 2015Inventors: Linda H. Kim-Habermehl, Liang Hong, Sean M. Keenan, Juergen Dombrowski, Hartmut Kuehn, Margarita Perello, Sonja Scharlemann, Chengbin Dong, Liang Zhang
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Publication number: 20140288202Abstract: A powdered polyurethane, preferably a powdered recycled polyurethane rigid foam is co-dried with a water insoluble film-forming polymer to obtain a redispersible polymer powder composite for use in hydraulic binders or cementitious compositions to improve performance of cementitious compositions or mortar, in applications such as cement based the adhesives (CBTA), or external thermal insulating composite systems (ETICS).Type: ApplicationFiled: October 24, 2012Publication date: September 25, 2014Inventors: Juergen Dombrowski, Hartmut Kuehn, Margarita Perello, Sonja Scharlemann
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Publication number: 20140275307Abstract: Powdered polyurethane flexible foams, preferably powdered recycled polyurethane flexible foams are used with a redispersible polymer powder (RDP), preferably as a preblended additive, in hydraulic binders or cementitious compositions to improve performance of cementitious compositions or mortar, in applications such as cement based tile adhesives (CBTA), or external thermal insulating composite systems (ETICS). The use of the powdered polyurethane flexible foam as a partial replacement for an RDP unexpectedly provides an increase in wet mortar density while maintaining excellent workability and quick open time, quicker setting times, improved impact resistance, and increased adhesion after water immersion.Type: ApplicationFiled: October 24, 2012Publication date: September 18, 2014Inventors: Juergen Dombrowski, Hartmut Kuehn, Margarita Perello, Sonja Scharlemann
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Patent number: 8268927Abstract: A water redispersible polymer powder is produced by drying an aqueous mixture of a high Tg carboxylated styrene butadiene polymer and a low Tg carboxylated styrene butadiene polymer, where the ratio of the mean or average particle size of the high Tg polymer to the particle size of the low Tg polymer is from 1:1 to 5:1, preferably from 1:1 to 3:1, and the amount of the high Tg polymer is from 20 wt. % to 35 wt. %, preferably from 25 wt. % to 30 wt. %, based upon the total weight of the high Tg polymer and the low Tg polymer. Cement compositions such as mortars, which contain the redispersible polymer powder exhibit unexpectedly superior high bond strength and high impact resistance.Type: GrantFiled: June 23, 2011Date of Patent: September 18, 2012Assignee: Dow Global Technologies LLCInventors: Robert Baumann, Juergen Dombrowski, Hartmut Kuehn, Etienne Lazarus, Gerold A Lohmuller, Margarita Perello, Yafei Zhu
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STYRENE-BUTADIENE BASED REDISPERSIBLE POLYMER POWDERS WITH IMPROVED STABILITY IN CEMENT APPLICATIONS
Publication number: 20120077907Abstract: A water redispersible polymer powder is produced by drying an aqueous mixture of a carboxylated styrene butadiene polymer and a colloidal stabilizer which includes a polyvinyl alcohol modified with an alkyl end chain. The alkyl modified polyvinyl alcohol provides excellent redispersibility of the redispersible polymer powder without adversely affecting spray drying. Cement compositions such as mortars, which contain the redispersible polymer powder with the alkyl modified polyvinyl alcohol exhibit unexpectedly superior stability and an unexpectedly lower rate of mortar viscosity buildup which is advantageous for workability or troweling.Type: ApplicationFiled: September 21, 2011Publication date: March 29, 2012Inventors: Etienne Lazarus, Gerold Lohmüller, Juergen Dombrowski, Hartmut Kuehn, Margarita Perello, Sonja Scharlemann -
Publication number: 20120028064Abstract: Polymer powders comprising in copolymerized form a) one or more vinyl aromatic comonomers, b) one or more 1,3-diene comonomers, c) from 0.1 to 15 percent, based on the total comonomer weight, of one or more comonomers selected from the group consisting of ethylenically unsaturated mono- and dicarboxylic acids and their salts, wherein at least 75 percent of the total number of carboxylic groups present in the polymer are located at the surface of the polymer particles in the powder and at least 75 percent of the carboxylic groups located at the surface of the polymer particles in powder are present in their salt form, and d) from 0 to 40 percent, based on the total comonomer weight, of one or more additional comonomers have an excellent redispersibility in water.Type: ApplicationFiled: July 29, 2010Publication date: February 2, 2012Inventors: Margarita Perello, Harmut Kühn, Jürgen Dombrowski, Francois M. Casati, Etienne Lazarus, Gerold Lohmüller
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Publication number: 20120029119Abstract: A water redispersible polymer powder is produced by drying an aqueous mixture of a high Tg carboxylated styrene butadiene polymer and a low Tg carboxylated styrene butadiene polymer, where the ratio of the mean or average particle size of the high Tg polymer to the particle size of the low Tg polymer is from 1:1 to 5:1, preferably from 1:1 to 3:1, and the amount of the high Tg polymer is from 20 wt. % to 35 wt. %, preferably from 25 wt. % to 30 wt. %, based upon the total weight of the high Tg polymer and the low Tg polymer. Cement compositions such as mortars, which contain the redispersible polymer powder exhibit unexpectedly superior high bond strength and high impact resistance.Type: ApplicationFiled: June 23, 2011Publication date: February 2, 2012Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Juergen DOMBROWSKI, Hartmut KUEHN, Margarita PERELLO, Gerold A. LOHMULLER, Etienne LAZARUS, Robert BAUMANN, Yafei ZHU
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Publication number: 20110306705Abstract: Redispersible polymer powder compositions which include a polyglycol in admixture with a redispersible polymer powder (RDP), which powder includes a codried mixture of a carboxylated, water insoluble film-forming styrene butadiene polymer and a colloidal stabilizer, results in cement compositions having unexpectedly superior overall bonding strength and adhesion after water immersion. Use of the polyglycol provides good workability or ease of troweling during application. In addition, the RDP composition, which includes the RDP and the polyglycol, provides the cement-based composition with excellent abrasion resistance, surface appearance, and color. Also, the RDP composition provides for at least a 30% reduction, for example a 50% or more reduction in the amount of retarder or retardant employed in the dry mix formulation for cement compositions, such as self leveling flooring compounds or compositions, and cement-based tile adhesives.Type: ApplicationFiled: June 14, 2011Publication date: December 15, 2011Inventors: Jürgen Dombrowski, Hartmu Kühn, Margarita Perello, Gerold A. Lohmüller, Etienne Lazarus
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Publication number: 20110021698Abstract: The present disclosure provides embodiments of polymeric particles, aqueous coating compositions, coating compositions, processes of making polymeric particles hydrophobic coatings, processes for making hydrophobic synthetic latex compositions, processes of forming polymeric particle agglomerates for use in a hydrophobic coating, and process of making hydrophobic polymeric binders. In some embodiments, the polymeric particle includes a polymer having an elastic modulus greater than about 108 Pascal (Pa), measured at 25 degrees Celsius (° C.) and at a deformation frequency of 1 radian per second, where the polymeric particle is hydrophobic, and where the hydrophobicity is achieved by polymerizing a monomer in a mixture comprising water and a fatty acid, or salt thereof, where the monomer contains less than about 3 parts acid monomer per 100 parts dry monomer.Type: ApplicationFiled: January 9, 2009Publication date: January 27, 2011Inventors: Jouko T. Vyörykkä, Pekka J. Salminen, Etienne Lazarus, Peter Sandkuehler, Gerald A. Vandezande, Kenneth W. Hester, Juergen Dombrowski
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Publication number: 20100240819Abstract: The invention provides a polymer composition comprising (a) a copolymer comprising in polymerized form at least one vinyl ester (i) of a monocarboxylic acid having 2 to 4 carbon atoms and at least one vinyl ester (ii) of a monocarboxylic acid having at least 5 carbon atoms and (b) a copolymer different from copolymer (a) and comprising in polymerized form vinyl acetate and ethylene. In addition the invention concerns compositions comprising an inorganic hydraulic binding agent and said polymer composition; and uses of said polymer composition, especially in tile adhesives.Type: ApplicationFiled: February 28, 2008Publication date: September 23, 2010Inventors: Margarita Perello, Hartmut Kuehn, Juergen Dombrowski, Andreas Wichmann