Dow Global Technolgoies LLC

Rohm and Haas Company

Margarita Perello

Juergen Dombrowski

Sonja Scharlemann

Gerold Lohmüller

Francois M Casati

Jürgen Dombrowski

Liang Zhang

William Christopher Finch

Hartmut Kuehn

Etienne Lazarus

Robert Baumann

Liang Hong

Mark D Westmeyer

Jeffrey Joseph Sobczak

Sandra Hofmann

Linda Kim-Habermehl

Marc Schmitz

Eva-Maria Michalski

Miroslav Janco

Jouko Vyoerykkae

Chengbin Dong

Debora Ressnig

Gerold A Lohmuller

Andreas Wichmann

Harmut Kühn

Hartmut Kühn

Sean M Keenan

Jennifer Lowe

Yafei Zhu

Gerald Adolf Lohmüller

Juergen Dombroski

Gerold A Lohmüller

Hartnut Kuehn

Sandra D Hofmann

Robert Baummann

Gerold Adolf LOHMÜLLER

Ann E Evans

Gerold Adolf Lohmueller

Gerald Adolf Lohmuller

Gerold Adolf Lohmuller

Eva-Marie Michalski

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.

Freeze-thaw stable quick-set additive

The present invention provides two-component compositions comprising a component A) one or more acrylic aqueous emulsion copolymer having a measured glass transition temperature (T) of from &#x2212;20 to 0&#xb0; 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,&#x3b2;-unsaturated Cto Ccarboxylic 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.

Emulsion polymer two-component compositions for fast curing cementitious waterproofing membranes

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).

Use of polyurethane powder as inner additive of redispersible polymer powder

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.

Redispersible polymer powder

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&#xb0; C. to 500&#xb0; 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.

EIFS formulations with enhance rain resistance

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.

Dry mix formulations containing carboxylated styrene-butadiene redispersible polymer powders and alumina rich containing cements

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.

Styrene-butadiene based redispersible polymer powders with improved stability in cement applications

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.

Redispersible polymer powder compositions prepared from styrene butadiene-based latex for dry mix formulations

Polymer powders comprising in copolymerized form

Water-redispersible polymer powder

The present invention provides compositions comprising redispersible polymer powders of polyolefins with carboxyl group containing dispersant polymers and vinyl ester copolymers which may further comprise hydraulic or water curable inorganic cements for various construction applications, such as cement tile adhesives. Methods of making redispersible polymer powders of polyolefins are also provided, including forming an aqueous polyolefin dispersion, such as, for example, by mechanical dispersion, followed by drying to form the redispersible polymer powders.

Redispersible polymer powder from polyolefin dispersions and the use thereof in construction applications

Polyurethane foams of improved resilience properties can be produced from: a) a polyisocyanate, b) a polyether polyol or polyester polyol, c) a blowing agent, d) one or more optional additives or auxiliary compounds, and e) a redispersible polymer powder based on a homopolymer or copolymer of one or more monomers from the group consisting of vinyl esters of un-branched or branched alkylcarboxylic acids having from 1 to 15 carbon atoms, methacrylic esters and acrylic esters of alcohols having from 1 to 15 carbon atoms, vinylaromatics, olefins, dienes and vinyl halides.

Flexible foams

A water redispersible polymer powder is produced by drying an aqueous mixture of a high Tcarboxylated styrene butadiene polymer and a low Tcarboxylated styrene butadiene polymer, where the ratio of the mean or average particle size of the high Tpolymer to the particle size of the low Tpolymer is from 1:1 to 5:1, preferably from 1:1 to 3:1, and the amount of the high Tpolymer is from 20 wt. % to 35 wt. %, preferably from 25 wt. % to 30 wt. %, based upon the total weight of the high Tpolymer and the low Tpolymer. Cement compositions such as mortars, which contain the redispersible polymer powder exhibit unexpectedly superior high bond strength and high impact resistance.

Redispersible polymer powders prepared from blends of carboxylate

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Duebendorf, Switzerland

Margarita Perello