Abstract: The present invention provides an additive blend containing cellulose ether and psyllium suitable for use in dry mix compositions containing a hydraulic binder. The dry mix compositions are particularly useful as a mortar composition, especially for tile adhesives because the compositions improve slip resistance of cement containing tile adhesives, the present invention also provides improved cement containing tile adhesives for larger tiles.

Abstract: The present invention relates to a hydraulic binder-free composition comprising a water soluble polysaccharide-derived water retention agent for use in the preparation of dry mortar formulations, in particular, cement based tile adhesives (CBTA), adhesive, ETICS base coat or adhesive formulations and/or grouts. The invention further relates to a dry mortar formulation comprising said a hydraulic binder-free composition. Furthermore, the invention is directed to the use of such a hydraulic binder-free compositions for increasing, once cured, the adhesive, flexural and/or compressive strength of a dry mortar formulation.

Abstract: The present invention relates to a redispersible powder composition for use in the preparation of dry mortar formulations, especially of cementitious bound tile adhesives (CBTA). The invention further relates to a dry mortar formulation comprising said redispersible powder composition. Furthermore, the invention is directed to a method of increasing the open time of a dry mortar formulation without deteriorating the mechanical strength of the cured dry mortar formulation.

Abstract: The present invention relates to a redispersible polymer powder (RDP) composition for use in the preparation of dry mortar formulations, in particular, cement based tile adhesives (CBTA), adhesive, ETICS base coat or adhesive formulations and/or grouts. The invention further relates to a dry mortar formulation comprising said RDP composition. Furthermore, the invention is directed to the use of such RDP compositions for increasing, once cured, the adhesive, flexural and/or compressive strength of a dry mortar formulation.

Abstract: Cellulose ethers, wherein at least a part of the hydroxyl groups of the cellulose backbone are substituted by methoxy groups and hydroxyalkoxy groups, and optionally alkoxy groups being different from methoxy groups, having an unconventional distribution of methoxy substituents at the 2-, 3- and 6-positions of the anhydroglucose units are described. Such cellulose ethers exhibit significantly higher thermoreversible gel strengths than any known hydroxyalkyl methyl celluloses of comparable viscosity and kind and level of substitution rendering them useful as additives for building compositions such as cement based tile adhesives. In particular, such cellulose ethers can be used to improve the attainable adhesion strength after heat storage conditioning and the temporal setting characteristics of a building composition.

Abstract: A hydraulic setting adhesive containing a hydraulic binder, fillers, a water retention agent, a sulfoalkylester surfactant, and optionally a redispersible polymer powder and/or a polymer dispersion, wherein the surfactant is represented by the formula of MSO3—R1—(—COOR2)n, wherein M is selected from the group consisting of hydrogen, alkali metals, alkaline earth metals, and ammonium; R1 is linear or branched, saturated or unsaturated C1-C10 alkylene that optionally can be substituted by one or more hydroxyl, halogen, nitro or cyano groups; R2 can be identical or different from R1 and is represented by C1-C22 linear or branched alkyl; and n is an integer from 1 to 10, and wherein the hydraulic setting adhesive based on its dry weight comprises 0.1-3% by weight of the water retention agent.

Abstract: Cellulose ethers, wherein at least a part of the hydroxyl groups of the cellulose backbone are substituted by methoxy groups and hydroxyalkoxy groups, and optionally alkoxy groups being different from methoxy groups, having an unconventional distribution of methoxy substituents at the 2-, 3- and 6-positions of the anhydroglucose units are described. Such cellulose ethers exhibit significantly higher thermoreversible gel strengths than any known hydroxyalkyl methyl celluloses of comparable viscosity and kind and level of substitution rendering them useful as additives for building compositions such as cement based tile adhesives. In particular, such cellulose ethers can be used to improve the attainable adhesion strength after heat storage conditioning and the temporal setting characteristics of a building composition.

Abstract: The present invention provides an additive blend containing cellulose ether and psyllium suitable for use in dry mix compositions containing a hydraulic binder. The dry mix compositions are particularly useful as a mortar composition, especially for tile adhesives because the compositions improve slip resistance of cement containing tile adhesives, the present invention also provides improved cement containing tile adhesives for larger tiles.

Abstract: A hydraulic setting adhesive containing a hydraulic binder, fillers, a water retention agent, a sulfoalkylester surfactant, and optionally a redispersible polymer powder and/or a polymer dispersion, wherein the surfactant is represented by the formula of MSO3-R1—(—COOR2)n, wherein M is selected from the group consisting of hydrogen, alkali metals, alkaline earth metals, and ammonium; R1 is linear or branched, saturated or unsaturated C1-C10 alkylene that optionally can be substituted by one or more hydroxyl, halogen, nitro or cyano groups; R2 can be identical or different from R1 and is represented by C1-C22 linear or branched alkyl; and n is an integer from 1 to 10, and wherein the hydraulic setting adhesive based on its dry weight comprises 0.1-3% by weight of the water retention agent.

Abstract: The present invention relates to a cellulose ether composition for use in the preparation of dry mortar formulations, especially of cementitious bound tile adhesives (CBTA). The invention further relates to a dry mortar formulation comprising said cellulose ether composition. Furthermore, the invention is directed to a method of improving the slip resistance of a dry mortar formulation without deteriorating the mechanical strength and the open time of the cured dry mortar formulation.

Abstract: The present invention relates to a cellulose ether composition for use in the preparation of dry mortar formulations, especially of cementitious bound tile adhesives (CBTA). The invention further relates to a dry mortar formulation comprising said cellulose ether composition. Furthermore, the invention is directed to a method of improving the slip resistance of a dry mortar formulation without deteriorating the mechanical strength and the open time of the cured dry mortar formulation.

Abstract: The present invention relates to a redispersible powder composition for use in the preparation of dry mortar formulations, especially of cementitious bound tile adhesives (CBTA). The invention further relates to a dry mortar formulation comprising said redispersible powder composition. Furthermore, the invention is directed to a method of increasing the open time of a dry mortar formulation without deteriorating the mechanical strength of the cured dry mortar formulation.

Abstract: The present invention relates to a new, particularly economical process for preparing particulate water-soluble cellulose derivatives. The process involves forming a feed composition of swollen and/or dissolved cellulose derivative, and water. The feed composition is contacted with a superheated gas mixture, in a sieve-free high rotational speed gas jet impact mill, and the cellulose derivative of the feed composition is converted into a solid state form of finely particulate particles. The superheated gas mixture, with which the feed composition is contacted, is selected from: (i) a superheated gaseous mixture of steam and an inert gas; and (ii) a superheated gas mixture of steam and air. The superheated gas mixture has a steam content of 40 wt. % to 99 wt. %, based on the total weight of the superheated gas mixture.

Abstract: Described is a building material composition prepared from or having added thereto a particulate material selected from particulate polysaccharides or particulate polysaccharide derivatives. The particulate material of the building material composition is prepared by a method comprising: (a) forming a feed composition comprising a member selected from the group consisting of polysaccharides and polysaccharide derivatives, and 35 wt. % to 99 wt. % of water, based on the total weight of the feed composition, wherein said member is at least one of swelled and dissolved in the feed composition; (b) contacting, in a mill, the feed composition with a gas stream, thereby converting simultaneously the water of said feed composition into water vapor, and said member of said feed composition into a solid state form of finely particulate material; (c) separating the particulate material from the gas stream; and (d) optionally drying the particulate material.

Abstract: This invention relates to a process for producing a substantially fiber-free carboxymethyl cellulose which predominantly exhibits elastic properties, to the use thereof as a superabsorbent material, and to the use thereof as an adjuvant substance for achieving suitable rheological and water retention properties for the cosmetics, pharmaceutical and food sectors, and for industrial applications, e.g. as an additive for coating materials, for the sealing of cables and for use in tunnelling and in civil and underground engineering.

Abstract: A hydrocolloid composition comprising at least one sulpoalkyl-substituted polysacharide ether, is described. More particularly, the hydrocolloid composition includes: a) at least one sulphoalkyl-substituted polysaccharide ether, which is soluble in each of cold water and hot water, e.g., carboxymethylsulphoethylcellulose (CMSEC); b) optionally at least one nonionic polysaccharide ether having a thermoreversible gel point (or cloud point) of greater than 35° C. and less than 100° C.; and c) optionally at least one additive, e.g., an antioxidant. Also described are dispersion-bound architectural formulations and emulsion paints which comprise the hydrocolloid compositions of the present invention.

Abstract: The present invention relates to a new, particularly economical process for producing particulate water-soluble cellulose derivatives. The process involves forming a feed composition of swollen and/or dissolved cellulose derivative, and water. The feed composition is contacted with a carrier and heat exchange gas, in a sieve-free high rotational speed gas jet impact mill, and the cellulose derivative of the feed composition is converted into a solid state form of finely particulate particles. The particulate cellulose derivative is then separated from the heat exchange gas and carrier gas, and optionally dried. The mill drying and the particulate cellulose derivative product are influenced by establishing a specific water content in the swollen and/or dissolved cellulose derivative.

Abstract: Described is a building material composition prepared from or having added thereto a particulate material selected from particulate polysaccharides or particulate polysaccharide derivatives. The particulate material of the building material composition is prepared by a method comprising: (a) forming a feed composition comprising a member selected from the group consisting of polysaccharides and polysaccharide derivatives, and 35 wt. % to 99 wt. % of water, based on the total weight of the feed composition, wherein said member is at least one of swelled and dissolved in the feed composition; (b) contacting, in a mill, the feed composition with a gas stream, thereby converting simultaneously the water of said feed composition into water vapor, and said member of said feed composition into a solid state form of finely particulate material; (c) separating the particulate material from the gas stream; and (d) optionally drying the particulate material.

Abstract: The present invention relates to a new, particularly economical process for producing particulate water-soluble cellulose derivatives. The process involves forming a feed composition of swollen and/or dissolved cellulose derivative, and water. The feed composition is contacted with a carrier and heat exchange gas, in a sieve-free high rotational speed gas jet impact mill, and the cellulose derivative of the feed composition is converted into a solid state form of finely particulate particles. The particulate cellulose derivative is then separated from the heat exchange gas and carrier gas, and optionally dried. The mill drying and the particulate cellulose derivative product are influenced by establishing a specific water content in the swollen and/or dissolved cellulose derivative.

Abstract: The present invention relates to a new, particularly economical process for preparing particulate water-soluble cellulose derivatives. The process involves forming a feed composition of swollen and/or dissolved cellulose derivative, and water. The feed composition is contacted with a superheated gas mixture, in a sieve-free high rotational speed gas jet impact mill, and the cellulose derivative of the feed composition is converted into a solid state form of finely particulate particles. The superheated gas mixture, with which the feed composition is contacted, is selected from: (i) a superheated gaseous mixture of steam and an inert gas; and (ii) a superheated gas mixture of steam and air. The superheated gas mixture has a steam content of 40 wt. % to 99 wt. %, based on the total weight of the superheated gas mixture.