Abstract: The present application relates to an additive component comprising a component A and a component B, wherein component A comprises at least one hardening retarder selected from glyoxylic acid, salts thereof, condensation or addition products of glyoxylic acid or salts thereof, and mixtures thereof, and component B comprises at least one hardening accelerator selected from calcium-silicate-hydrate, calcium formate, calcium nitrate, calcium chloride, calcium hydroxide, lithium carbonate, lithium sulfate, potassium sulfate, sodium sulfate, ground gypsum, and combinations thereof, in 3D printing of a construction material composition.

Abstract: A wetting agent composition may include (i) a wetting agent selected from the group consisting of anionic, cationic, nonionic wetting agents and a combination of these wetting agents, and (ii) a pulverulent carrier. A dry mixture may include such a wetting agent composition and at least one mineral binder, as may a wet mixture obtainable by mixing the dry mixture with water.

Abstract: The present invention relates to a method for producing a gypsum-containing foamed prefabricated building material and to a gypsum-containing foamed prefabricated building material.

Abstract: The invention relates to a composition comprising (?) at least one water-soluble polymer based on (a) 5 to 40 wt % of at least one monomer of the formula (I) and (b) 5 to 95 wt % of at least one monomer (b) which comprises acid groups and is different from monomer (a), and (?) at least one associative thickener. Further disclosed is a mixture comprising an inorganic binder and also the composition of the invention. A further aspect of the present invention is the use of the composition of the invention as a rheological additive.

Abstract: The present invention concerns an additive for construction chemical compositions, in particular mortar and cement compositions. The additive comprises at least one amide or ester of a sugar acid and at least one water-soluble comb polymer which contains, on the main chain, acid functions and side chains having ether functions. The additive is useful for retarding the hardening of a construction chemical composition.

Abstract: The present invention relates to a construction chemical formulation which cures rapidly and with low stress and which comprises calcium sulfate, an ettringite former, an activator, an aggregate and a polymeric binder, and also to the use of the construction chemical formulation for producing sealants, coatings, adhesives, screeds, or leveling compositions.

Abstract: The invention relates to a pulverulent composition which can be produced by bringing a powder which comprises at least one inorganic binder into contact with from 0.01 to 10% by weight, based on the total mass of the composition, of a liquid component comprising at least one copolymer which can be obtained by polymerization of a mixture of monomers comprising (I) at least one ethylenically unsaturated monomer which comprises at least one radical selected from the group consisting of carboxylic acid, carboxylic acid salt, carboxylic esters, carboxamide, carboxylic anhydride and carboximide and (II) at least one ethylenically unsaturated monomer having a polyalkylene oxide radical, where the liquid component contains at least 1% by weight of the at least one copolymer and at least 30% by weight of an organic solvent. Furthermore, a process for producing the liquid component, the use thereof and also specific copolymers are disclosed.

Abstract: The invention relates to a pulverulent composition preparable by contacting a powder with 0.01 to 50 wt %, based on the overall mass of the composition, of a liquid component comprising at least one copolymer obtainable by polymerizing a mixture of monomers comprising (I) at least one ethylenically unsaturated monomer which comprises at least one radical from the series carboxylic acid, carboxylic salt, carboxylic ester, carboxylic amide, carboxylic anhydride, and carboxylic imide and (II) at least one ethylenically unsaturated monomer having a polyalkylene oxide radical, the liquid component comprising at least 1 wt % of the at least one copolymer and at least 30 wt % of an organic solvent, and the powder which is contacted with the liquid component comprising no inorganic binder. Further disclosed is a binder composition which comprises a pulverulent composition of the invention and an inorganic binder.

Abstract: The invention relates to a composition comprising (?) at least one water-soluble polymer based on (a) 5 to 40 wt % of at least one monomer of the formula (I) and (b) 5 to 95 wt % of at least one monomer (b) which comprises acid groups and is different from monomer (a), and (?) at least one associative thickener. Further disclosed is a mixture comprising an inorganic binder and also the composition of the invention. A further aspect of the present invention is the use of the composition of the invention as a rheological additive.

Abstract: The present invention relates to a method for producing a gypsum-containing foamed prefabricated building material and to a gypsum-containing foamed prefabricated building material.

Abstract: The invention relates to a dispersant comprising a polymer obtainable by copolymerization of monomers including 5 to 80 mol % of a hydroxyalkyl acrylate phosphate and/or hydroxyalkylacrylamide phosphate (monomer 1), 0 to 20 mol % of a di(hydroxyalkyl acrylate) phosphate and/or di(hydroxyalkylacrylamide) phosphate (monomer 2) and 1 to 80 mol % of a polyalkylene glycol-containing macromonomer comprising an alkene group (monomer 3). Further disclosed is a process for preparing the polymers of the invention and the use thereof as dispersants in calcium sulphate-containing compositions. A further aspect of the invention is a process for producing shaped gypsum bodies, and also shaped gypsum bodies, more particularly gypsum plasterboards and self-levelling screeds, comprising the dispersant of the invention.

Abstract: The present invention relates to a composition comprising (?) at least one inorganic binder and (?) at least one water-soluble copolymer based on (a) 0.1 to 20 wt % of at least one monomer of the formula (I) and (b) 25 to 99.9 wt % of at least one hydrophilic monomer (b) which is different from monomer (a), where the at least one copolymer has a molar mass average M of 1 500 000 to 30 000 000 g/mol. Furthermore, a process for producing this composition is disclosed. A further aspect of the present invention is the use of the copolymer of component (?) as rheological additive in a composition of the invention.

Abstract: The present invention relates to a method for producing a gypsum-containing foamed prefabricated building material and to a gypsum-containing foamed prefabricated building material.

Abstract: The present invention relates to a composition comprising (?) at least one inorganic binder and (?) at least one water-soluble copolymer based on (a) 0.1 to 20 wt % of at least one monomer of the formula (I) and (b) 25 to 99.9 wt % of at least one hydrophilic monomer (b) which is different from monomer (a), where the at least one copolymer has a molar mass average M of 1 500 000 to 30 000 000 g/mol. Furthermore, a process for producing this composition is disclosed. A further aspect of the present invention is the use of the copolymer of component (?) as rheological additive in a composition of the invention.

Abstract: The invention relates to a pulverulent composition comprising, based on the overall mass of the composition, A) at least 20 wt % of a calcium sulfate-based binder and B) 0.01 to 4 wt % of at least one copolymer obtainable by polymerizing a mixture of monomers comprising (I) at least one ethylenically unsaturated monomer which comprises at least one radical from the series carboxylic acid, carboxylic salt, carboxylic ester, carboxylic amide, carboxylic anhydride, and carboxylic imide and (II) at least one ethylenically unsaturated monomer having a polyalkylene oxide radical, the pulverulent composition being producible by a method in which a powder component comprising a calcium sulfate-based binder is contacted with a liquid hydrous component comprising less than 30 wt % of an organic solvent, comprising B), the liquid hydrous component being used in an amount of less than 20 wt %, based on the overall mass of the pulverulent composition, and the pulverulent composition comprising no hydraulic binder.

Abstract: The invention relates to a composition comprising 1 to 70 wt % of at least one copolymer obtainable by polymerizing a mixture of monomers comprising (I) at least one ethylenically unsaturated monomer which comprises at least one radical from the series carboxylic acid, carboxylic salt, carboxylic ester, carboxylic amide, carboxylic anhydride, and carboxylic imide, and (II) at least one ethylenically unsaturated monomer having a polyalkylene oxide radical, 0.01 to 10 wt % of at least one emulsifier, and 30 to 98 wt % of at least one hydrocarbon liquid at 20° C. or a hydrocarbon mixture. Also disclosed are a process for preparing the composition, and a pulverulent mixture comprising the composition of the invention.

Abstract: The invention relates to a process for producing calcium sulphate dihydrate by reacting a water-soluble calcium compound with a water-soluble sulphate compound in the presence of water and a polymer containing acid groups, wherein the polymer containing acid groups comprises specific polyether groups. Additionally disclosed are calcium sulphate dihydrate producible by the process according to the invention, and the use thereof for production of gypsum plasterboard.

Abstract: Suggested is a novel coated particle of active ingredients with controlled release properties at pH-values from 10 to 14, wherein the active ingredient is selected from one or more construction chemical additives for the control of inorganic binders, characterized in that the coating comprises shellac, a process for its manufacture and the use thereof as an additive for mortars, dry mortars, cement slurries and/or concretes.

Abstract: Method for making light-weight gypsum board with enhanced compressive strength by addition of dispersants. Wallboards made by use of a gypsum-based composition comprising a ketone resin as dispersant and a foaming agent.

Abstract: A dry mortar mixture based on at least one hydraulic and/or latently hydraulic binder which in the made-up and not yet cured state has firm properties is claimed. The novel dry mortar mixture is characterized in that it contains at least one representative of a dispersant and at least one compound having superabsorbent properties. This mixture makes it possible to carry over the advantages of known tile adhesives for horizontal application to vertical application possibilities.