Dow Global Technolgoies LLC

Rohm and Haas Company

Marc Schmitz

William Christopher Finch

Robert Baumann

Roland Bayer

Wei-Wen Tsai

Margarita Perello

Hongwei Shen

Alexandra Hild

Adam W Freeman

Miroslav Janco

Adam Wade Freeman

Jouko Vyoerykkae

Grit Grote

Philip M Imbesi

Jennifer Lowe

Jörn Breckwoldt

Sipei Zhang

Ann E Evans

Nipon Pothayee

A concrete-forming composition for producing a concrete article including: (a) at least one internal curing agent including a water-insoluble crosslinked cellulose ether wherein the water-insoluble crosslinked cellulose ether has a higher water adsorption capacity compared to typically used superabsorbent polymers and wherein the water-insoluble crosslinked cellulose ether can be successfully and efficiently used as a water-insoluble crosslinked cellulose either internal curing agent in concrete-forming compositions; and (b) a cementitious material; a process for making the above concrete-forming composition; and a concrete article made from the above concrete-forming composition with the objective of reducing autogenous shrinkage and crack formation in the resulting concrete article made from the above concrete-forming composition.

Concrete-forming composition

The present invention provides substantially nonionic brush polymers having pendant polyether groups, preferably poly(alkylene glycol) groups, which polymers are useful as synthetic polymer substitutes for cellulose ethers in mortars and hydraulic binders. The brush polymers are preferably crosslinked, such as with ethylene glycol di(meth)acrylates.

Synthetic polymer rheology modifier and water retention agent replacement for cellulose ether in cement compositions

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 mortar contains cement, one or more than one mineral additive, superplasticizer, aggregates, a hydroxyethyl methyl cellulose and water, wherein the hydroxyethyl methyl cellulose is characterized by the sum of its hydroxyethyl molecular substitution and methyl degree of substitution is 1.90 or higher and 2.30 or lower and its viscosity as a 2 weight-percent aqueous solution that is below 30,000 milliPascals*seconds.

Mortar with hydroxyethyl methyl cellulose for self-compacting concrete

The present invention relates to an extrudable hydraulic or non-hydraulic binding composition with improved properties with respect to crack formation and a method of making such a composition. The invention further relates to a method of decreasing or avoiding the formation of cracks of an extruded hydraulic or non-hydraulic binding composition and to a method of making an extruded article having less or no cracks. Furthermore, the invention is directed to a cellulose ether providing an extrudable hydraulic or non-hydraulic binding composition with improved properties with respect to crack formation.

Cellulose ether suitable for the extrusion of cement bound articles with improved properties

Growing community of inventors

Verden/Aller, Germany

Marc Schmitz