Patents by Inventor Margarita Perello
Margarita Perello 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: 11964912Abstract: The present invention provides substantially water free aluminate cement paste compositions that exhibit improved freeze thaw resistance and are storage stable upon being activated on admixture with water or an aqueous liquid. The compositions comprise a deep eutectic solvent mixture of a polar organic carrier component, preferably, glycerol or another hydrogen donor, and an anhydrous cation containing component, such as a metal salt or an onium compound in a paste with an aluminate cement. The compositions can be kept for as long as 30 days or more at room temperature without stabilization and then used to make cementitious coating layers or waterproofing membranes.Type: GrantFiled: February 13, 2020Date of Patent: April 23, 2024Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Debora Ressnig, Margarita Perello
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Publication number: 20240101487Abstract: The present invention provides a storage stable silicon-containing powder composition suitable for use in dry mix compositions containing cement and filler suitable as cement-based tile adhesives, the powder composition comprising (i) a water redispersible polymer powder (RDP); and, (ii) a granular composition of (a) a silicate carrier, (b) a polydiorganosiloxane, (c) a hydrolysable silane containing a C4 to C12 alkyl group, or an oligomer thereof, and (d) a polymer encapsulant for the hydrolysable silane and the polydiorganosiloxane, wherein the weight ratio of the total RDP to the total weight of granular composition ranges from 90:10 to 98:2. The present invention provides methods of using dry mixes as cement-based tile adhesives wherein the powder composition enables good open time and excellent tensile adhesion, especially after heat aging.Type: ApplicationFiled: April 13, 2022Publication date: March 28, 2024Inventors: Elodie Hablot, Margarita Perello, Jean-Paul Lecomte
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Publication number: 20220135483Abstract: The present invention provides substantially water free aluminate cement paste compositions that exhibit improved freeze thaw resistance and are storage stable upon being activated on admixture with water or an aqueous liquid. The compositions comprise a deep eutectic solvent mixture of a polar organic carrier component, preferably, glycerol or another hydrogen donor, and an anhydrous cation containing component, such as a metal salt or an onium compound in a paste with an aluminate cement. The compositions can be kept for as long as 30 days or more at room temperature without stabilization and then used to make cementitious coating layers or waterproofing membranes.Type: ApplicationFiled: February 13, 2020Publication date: May 5, 2022Inventors: Debora Ressnig, Margarita Perello
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Publication number: 20220098106Abstract: The present invention relates to substantially water free hydraulic cement pastes which remain shelf stable over extended time periods, for example, 100 days at room temperature. The substantially water free cement pastes comprise a deep eutectic solvent mixture of a polar organic carrier component, such as a hydrogen donor like a polyol, in association with an anhydrous cation containing component, and a hydraulic cement, preferably, an aluminate cement, or sulpho-aluminate cement. A preferred deep eutectic solvent mixture comprises K2CO3 and glycerol in molar ratios of from 1:1 to 1:6. The cement pastes are activated simply by addition of water or aqueous polymers to form thin set compositions.Type: ApplicationFiled: March 31, 2020Publication date: March 31, 2022Inventors: Debora Ressnig, Margarita Perello
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Publication number: 20220081362Abstract: Described herein are emulsion polymers, spray dried powders made with said emulsion polymers, and cementitious compositions made with said emulsion polymers or said spray dried powders. Emulsion polymers described herein comprise a shell portion comprising an alkali soluble resin (ASR), a core portion formed from polymerized units of at least one hydrophobic ethylenically unsaturated monomer, wherein no crosslinker is present when the shell portion and core portion are combined, and a nonionic water-soluble polymer.Type: ApplicationFiled: March 25, 2020Publication date: March 17, 2022Applicants: Dow Global Technologies LLC, Rohm & Haas Company, Dow Produktions Und Vertriebs GMBH & Co. OHGInventors: Margarita Perello, Ligeng Yin, Sonja Menz, Joerg Neubauer, Jing Meng
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Publication number: 20180327310Abstract: The present invention provides two-component compositions for making a waterproofing membrane comprising as component A) one or more acrylic aqueous emulsion copolymerization product (copolymer) of (i) from 60 to 89.9 wt. % of one or more nonionic (meth)acrylic monomers, preferably, butyl acrylate, methyl acrylate or ethylhexyl (meth)acrylate, (ii) from 10 to 40 wt. % of one or more vinyl aromatic monomers, (iii) from 0.1 to 2.0 wt. % of one or more amide functional acrylic monomer, and mixtures thereof with itaconic acid or methacrylic acid, wherein the emulsion copolymer has at least one residue of an ascorbic acid reducing agent and of t-butyl hydroperoxide and has less than 40 ppm or, preferably, less than 20 ppm, or more preferably, less than 10 ppm, of residual (meth)acrylamide.Type: ApplicationFiled: October 24, 2016Publication date: November 15, 2018Inventors: Ann E. Evans, William C. Finch, Miroslav Janco, Sudhir M. Mulik, Margarita Perello, Marc Schmitz
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Patent number: 9988307Abstract: The present invention provides two-component compositions comprising a component A) one or more acrylic aqueous emulsion copolymer having a measured glass transition temperature (Tg) of from ?20 to 0° C. and which is the copolymerization product of (i) from 60 to 89.9 wt. % of one or more nonionic (meth)acrylic monomers, (ii) from 10 to 40 wt. % of one or more vinyl aromatic monomers, (iii) from 0.1 to 2.0 wt. % of one or more monomers chosen from itaconic acid, methacrylic acid, amides of a,?-unsaturated C3 to C6 carboxylic acids, and mixtures thereof, all wt. %s of monomers based on the total monomer solids, wherein the aqueous emulsion copolymer has at least one residue of an ascorbic acid reducing agent or is the copolymerization product of a monomer (iii) comprising itaconic acid, and, a separate component B) comprising a fast curing dry mix powder composition of a hydraulic cement and a high alumina content cement.Type: GrantFiled: June 10, 2015Date of Patent: June 5, 2018Assignees: Rohm and Haas Company, Dow Global Technologies LLCInventors: Jennifer Lowe, Margarita Perello, Marc Schmitz, Jouko Vyoerykkae
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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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Publication number: 20170226013Abstract: The present invention provides two-component compositions comprising a component A) one or more acrylic aqueous emulsion copolymer having a measured glass transition temperature (Tg) of from ?20 to 0° C. and which is the copolymerization product of (i) from 60 to 89.9 wt. % of one or more nonionic (meth)acrylic monomers, (ii) from 10 to 40 wt. % of one or more vinyl aromatic monomers, (iii) from 0.1 to 2.0 wt. % of one or more monomers chosen from itaconic acid, methacrylic acid, amides of a,?-unsaturated C3 to C6 carboxylic acids, and mixtures thereof, all wt. %s of monomers based on the total monomer solids, wherein the aqueous emulsion copolymer has at least one residue of an ascorbic acid reducing agent or is the copolymerization product of a monomer (iii) comprising itaconic acid, and, a separate component B) comprising a fast curing dry mix powder composition of a hydraulic cement and a high alumina content cement.Type: ApplicationFiled: June 10, 2015Publication date: August 10, 2017Inventors: Jennifer Lowe, Margarita Perello, Marc Schmitz, Jouko Vyoerykkae
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Patent number: 9499690Abstract: The present invention provides shelf-stable, non-cementitious dry mix compositions of inorganic non-cementious materials, such as sand, and water redispersible polymer powder (RDP) containing particles of a multi-stage acrylic copolymer having a calcium methacrylate salt group containing alkali-soluble resin outer stage and one or more inner stage, the particles further containing each of one or more nucleating agent having a boiling point of 150° C. to 500° C. and a water solubility of 3.5% or less, and one or more colloidal stabilizer, wherein the colloidal stabilizer and the multi-stage acrylic copolymer are contained in the same RDP particle.Type: GrantFiled: December 8, 2014Date of Patent: November 22, 2016Assignees: Rohm and Haas Company, Dow Global Technologies LLCInventors: Margarita Perello, Jeffrey J. Sobczak, Mark D. Westmeyer
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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: 20150159008Abstract: The present invention provides shelf-stable, non-cementitious dry mix compositions of inorganic non-cementious materials, such as sand, and water redispersible polymer powder (RDP) containing particles of a multi-stage acrylic copolymer having a calcium methacrylate salt group containing alkali-soluble resin outer stage and one or more inner stage, the particles further containing each of one or more nucleating agent having a boiling point of 150° C. to 500° C. and a water solubility of 3.5% or less, and one or more colloidal stabilizer, wherein the colloidal stabilizer and the multi-stage acrylic copolymer are contained in the same RDP particle.Type: ApplicationFiled: December 8, 2014Publication date: June 11, 2015Inventors: Margarita Perello, Jeffrey J. Sobczak, Mark D. Westmeyer
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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