A dry mortar, in particular a cementitious tile adhesive using fibers. A method improves the slip resistance, the flexibility, and/or the consistency of a dry mortar mixed up with water. Moreover, a structure, in particular a floor, a wall or a ceiling, includes a cover element, in particular a tile, whereby the cover element is fixed to the structure with a dry mortar mixed up with water.

Aqueous polymer dispersions are produced by radically initiated emulsion polymerization of ethylenically unsaturated monomers in the presence of protective colloids and/or emulsifiers in a continuously operated tubular reactor, characterized in that the direction of flow of the reactor contents is reversed along the longitudinal axis of the reactor over the course of polymerization.

The invention relates to a preparation comprising at least one hydraulic binding agent and at least one cellulose ether selected from methylhydroxyethylhydroxypropylcellulose (MHEHPC) and the use thereof, in particular in building material systems.

A mortar composition, in particular for preparing a viscoelastic structure and/or a fire barrier, including: a) 15-50 wt.-% of a hydraulic binder, b) 5-35 wt.-% of lightweight aggregates, c) 5-25 wt. % of further aggregates which have a particle density that is higher than the particle density of the lightweight aggregates, and d) 10-50 wt.-% of a polymer.

A mixture along with methods of preparing, uses and/or products made from the mixture and methods of preparing products made from the same. Where the mixture contains 0.5% to 10% by weight of one or more superabsorbent polymers and 90% to 99.5% by weight of one or more protective-colloid-stabilized polymers based on one or more ethylenically unsaturated monomers and optionally one or more additives. Where the percentages by weight are based on the dry weight of the mixture and wherein no mineral binder is present within the mixture.

A wall compound for use in all applications and particularly well-suited for joining adjacent wallboards. The compound includes a latex resin, a thickener, fibers, and a filler material. In some embodiments, the repair compound is configured to exhibit at least one of yield stress and pseudoplastic-type behavior. In some embodiments, the compound includes hydrophobic and hydrophilic fibers of different morphologies. In some embodiments, the wall compound includes one or more associative thickeners.

The present invention relates to a process for producing a redispersible dispersion powder, to the redispersible dispersion powder obtainable by this process, to an aqueous dispersion obtainable by step (1) of this process, and to a building material composition comprising the redispersible dispersion powder and/or the aqueous dispersion, to the use of the redispersible dispersion powder in a building material composition and to the use of the aqueous dispersion for production of a redispersible dispersion powder.

The present invention relates generally to wall repair compounds such as joint compounds, spackling compounds, and the like used to repair imperfections in walls or fill joints between adjacent wallboard panels. Particularly, the present invention relates to such a wall repair compound comprising a dust reduction additive (DRA) that reduces the quantity of airborne dust generated when the hardened compound is sanded. The dust reduction additive also imparts adhesion to the wall repair compounds to which it is added, for example to a joint compound. More specifically, this dust reduction additive is of sufficiently lighter shade to not impact the shade of the joint compound upon addition. In one embodiment, this invention relates to a non-foaming dust reduction additive that comprises paraffin and/or micro-crystalline wax-based emulsion.

The present invention provides dry mixes for skim coat mortars having improved pot life and workability while reducing cellulose ether dosage comprising a white cement, one or more fillers having a sieve average particle size of from 15 to 60 microns, from 0.25 to 0.5 wt. % of one or more gel-like crosslinked cellulose ethers containing polyether groups, preferably, a mixed cellulose ether having polyoxypropylene dioxyethylene ether crosslinks, and from 1 to 2.5 wt. % of one or more polymer redispersible powders (RDP). At least one gel-like crosslinked cellulose ether has a crossover point as measured by oscillation rheometry, at which storage modulus (G′) and loss modulus (G″) intersect and are identical, of 1.0ω or less. The present invention also provides methods of using the dry mixes.

A two-component polyurethane composition including a polyol component and a polyisocyanate component, wherein the polyol component comprises at least one polyester polyol A1 based on dimer fatty acids and/or dimer fatty alcohols having an OH number of 65-350 mg KOH/g, at least one polybutadiene polyol A2 and at least one alkoxylated alkylenediamine A3. The polyurethane composition has high strength and only a minor dependence of the mechanical properties, especially strength, on temperature, especially in the range from −40° C. to +100° C.