Abstract: The present invention relates to a method for preparing a compound of the formula (I) with a specific definition of the substituent R3 a mixture and also a corresponding application/use.

Abstract: The invention relates to dispersants for inorganic particles, preferably for hydraulic binders, which comprises the following structural units: i) at least one triazine structural unit, ii) at least one polyalkylene glycol structural unit, and iii) at least two phosphoric ester structural units on at least one carbon atom of one or more aromatic triazine rings of the formulae (IIa) and/or (IIb): —N—(CH2CH2—O—PO3H2)2,??(IIa) and —NH—CH2CH2—O—PO3H2.??(IIb) The invention also relates to a process for preparing the dispersants, to building material mixtures comprising one or more dispersants and one or more inorganic binders. The invention relates to the use of the dispersants as a water reducing agent, as a means for reducing the viscosity and for enhancing the early strengths of aqueous inorganic binders, and also to the use as a grinding aid in the production of cement.

Abstract: A colored cementitious composition is provided that is composed of hydraulic cement and a liquid coloring suspension. The liquid coloring suspension for cementitious compositions contains polycarboxylate dispersant, pigment, and a polysaccharide thixotropic additive. The liquid coloring suspension has improved viscosity consistency, improved shelf-life, anti-settling and anti-sludging properties, and decreased polycarboxylate dispersant requirements.

Abstract: The invention relates to coatings which can be obtained by adding mercapto groups to acrylates and/or by a radiation curing process, said coatings having good properties, to methods for producing same, and to the use thereof.

Abstract: The invention concerns a polycondensate containing (I) at least a structural unit, which is an aromatic moiety bearing a polyether side chain comprising 9 to 41 alkylene glycol units, (II) at least a structural unit, which is an aromatic moiety bearing at least one phosphoric acid ester group and (III) at least a methylene unit (—CH2—), the polycondensate having a polycondensation degree of 10 to 75. Also concerned are building material mixtures containing said polycondensates and the use as dispersant for inorganic binders.

Abstract: The present invention relates to an additive for hydraulically setting compositions, comprising a colloidally disperse preparation of at least one salt of a mono- or polyvalent metal cation and of at least one compound which is able to release an anion which forms a low-solubility salt with the metal cation, and of at least one polymeric sulphonated dispersant. The additive is suitable particularly as a slump retainer.

Abstract: The present invention relates to an additive for hydraulically setting compositions, comprising a colloidally disperse preparation of at least one water-soluble salt of a polyvalent metal cation, at least one compound capable of releasing an anion which forms a sparingly soluble salt with the polyvalent metal cation, and at least one polymeric dispersant which comprises anionic and/or anionogenic groups and polyether side chains.

Abstract: A cementitious composition including at least one cementitious material and at least one crack reducing admixture including: (i) from 0 to about 5 weight percent of at least one alcohol, based on the total weight of the admixture excluding water; and (ii) a compound having the chemical structure of formula (III): wherein: v is an integer from 0 to 50 and w is an integer from 0 to 50, with the proviso that the sum of v and w is at least 1 but not greater than 50. Also, methods of making the cementitious composition, reducing or eliminating the formation of cracks in a cementitious composition as the cementitious composition cures, and limiting the size of cracks which form in a cementitious composition as the cementitious composition cures using an admixture for cementitious compositions as described herein.

Abstract: The invention concerns a process for the for the preparation of a hardening accelerator composition by reaction of a water-soluble calcium compound with a water-soluble silicate compound, the reaction being carried out in the presence of an aqueous solution which contains a plasticizer suitable for hydraulic binders, characterized in that said reaction is being carried out in the presence of apatite and that the molar ratio of calcium to phosphor in the hardening accelerator is from 25/1 to 400/1.

Abstract: The present invention suggests 2-oxo-1,3-dioxolane-4-acyl halides of formula (I), wherein X is selected from F, Cl, Br, I and mixtures thereof, preferably Cl, processes for the preparation of said 2-oxo-1,3-dioxolane-4-acyl halides, the use of said 2-oxo-1,3-dioxolane-4-acyl halides for the preparation of 2-oxo-1,3-dioxolane-4-carboxylic esters of formula (II), the use of said 2-oxo-1,3-dioxolane-4-acyl halides for the preparation of 2-oxo-1,3-dioxolane-4-carboxamides of formula (III), and also the use of said 2-oxo-1,3-dioxolane-4-acyl halides as agents for the blocking of amines.

Abstract: The present invention relates to curable compositions based on elemental sulfur and polymer components. The inventive composition cures in the presence of elemental sulfur, thus providing a novel composition with enhanced chemical and physical properties in particular useful for sealing and coating applications.

Abstract: A process for the preparation of a hardening accelerator composition by reaction of a water-soluble calcium compound with a water-soluble silicate compound, said reaction being effected in the present of a water-soluble dispersant having at least one polyalkyleneglycol structural unit with a functional group at one end of the polyalkyleneglycol, being able to interact as an anchor group with the surface of cement particles, the hardening accelerator composition and its use.

Abstract: The present invention suggests a 2-oxo-1,3-dioxolane-4-carboxamide of formula (I), wherein R is an n-valent radical, n is an integer from 2 to 4, preferably from 2 to 3, and x is an integer from 1 to n?1. The invention furthermore suggests a process for the preparation of the 2-oxo-1,3-dioxolane-4-carboxamide of formula (I) from 2-oxo-1,3-dioxolane-4-carboxylic acid of formula (II) with a polyisocyanate of the formula R(NCO)n, where R and n have the meanings given, the use of the 2-oxo-1,3-dioxolane-4-carboxamide of formula (I) for the preparation of a 2-oxo-1,3-dioxolane-4-carboxamide-substituted prepolymer, and the 2-oxo-1,3-dioxolane-4-carboxamide-substituted prepolymer thus obtainable.

Abstract: An apparatus including: (a) a steam generator having a power output of less than or equal to about 6 boiler horsepower; (b) a steam conduit in fluid communication with the steam generator; (c) a fluid material conduit in fluid communication with a source of a fluid material, wherein the fluid material includes unexpanded, expandable polymeric microspheres; (d) a treatment zone in fluid communication with the steam generator via the steam conduit, and with the fluid material conduit, such that the fluid material is contacted by steam within the treatment zone; and (e) a back pressure generator in fluid communication with the treatment zone, capable of increasing pressure in the treatment zone, which results in expansion of the expandable polymeric microspheres when the fluid material exits the treatment zone.

Abstract: A process for the preparation of a hardening accelerator composition by reaction of a water-soluble calcium compound with a water-soluble silicate compound, said reaction being effected in the presence of a water-soluble dispersant having at least one polyalkyleneglycol structural unit with a functional group at one end of the polyalkyleneglycol, being able to interact as an anchor group with the surface of cement particles, the hardening accelerator composition and its use.

Abstract: The present invention relates to cationic copolymers, a process for the production of these cationic copolymers and the use of these cationic copolymers as dispersants for geopolymer binder systems. These cationic copolymers where the cationic charge is due to the presence of certain cyclic and/or polycationic groups are stable towards Hoffmann elimination that would otherwise occur at very high pH values. Moreover, the dispersing effect of cationic polymers can be further enhanced through the addition of polyvalent anions.

Abstract: The invention concerns a reinforced concrete element comprising an at least partially open-cell foamed, sound-absorbing material which is partially exposed on a surface of the concrete element. The surface on which the foamed material is exposed consists only partially of the foamed material and the reinforcement is partially surrounded by the foamed material. The invention further concerns a method of producing the concrete element and the use thereof as an acoustic ceiling in a building.

Abstract: A process for producing solid compositions containing calcium silicate hydrate (C—S—H) and a water-soluble comb polymer which is suitable as plasticizer for hydraulic binders, wherein the following process steps are carried out: a) contacting of an aqueous C—S—H-containing suspension with at least one comb polymer, b) optionally setting a suitable solids content of the product from step a) by dilution with water and c) drying of the product from step a) or b). The process products which can be obtained, the use thereof in building material mixtures, in particular, containing cement, the use as grinding aid in the production of cement and corresponding building material mixtures are likewise provided.

Abstract: A proposal is made for a cementitious system which comprises accelerator particles coated with crosslinked shellac, for the use as an additive component which comprises the accelerator particles coated with crosslinked shellac, and for a cement slurry which comprises the cementitious system and water.

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.