Abstract: The invention relates to the use of branched copolymers as dispersants of mineral binders, wherein the copolymers are formed from (1) at least one olefinically unsaturated carboxylic acid monomer (2) at least one olefinically unsaturated macromonomer of the general structure (I) where R1 is an olefinically unsaturated radical which has 2-10 carbon atoms and may optionally be substituted by oxygen and/or nitrogen, preferably vinyl, allyl, methallyl, vinyloxybutyl, isoprenyl, acryloyl and/or methacryloyl, X=O or NH, A is in each case independently C1-C10 alkylene, preferably ethylene, propylene and/or butylene, R2=C1-C16 alkyl, B is in each case independently C1-C10 alkylene, preferably ethylene, propylene and/or butylene, m is in each case independently an integer in the range of 0-350, preferably 2-200, more preferably 5-150, especially 7-30, n is an integer in the range of 0-100, preferably 1-100, more preferably 2-75, most preferably 5-55, p is 0 or 1, preferably 0, o is an integer in the range

Abstract: Heat-curing epoxy resin compositions containing a curing agent in the form of a mixture of aromatic dicarboxylic dihydrazide with a dihydrazide chosen from the group consisting of glutaric dihydrazide, adipic dihydrazide, pimelic dihydrazide, 8,12-eicosadienedioic acid-1,20-dihydrazide and 4-isopropyl-2,5-dioxoimidazolidine-1,3-di(propionohydrazide). The epoxy resin compositions are particularly suitable for automotive body-in-white bonding, where after induction pre-curing without additional metal joining techniques the pre-cured adhesives are cured again in a further step at temperatures of around 180° C.

Abstract: An adhesive composition includes at least one acrylic compound A, a reaction product RP obtained by polyaddition reaction of at least one compound P and at least one hardener H, and at least one free radical initiator I. A method for preparing an adhesive composition, to an at least partially cured adhesive, to a sealing device, to a method producing a sealing device, and to a waterproofed structure.

Abstract: A method of producing a hem flange bond wherein the method uses a one-component thermosetting epoxy resin composition including 20-60% by weight of at least one epoxy resin A, a latent curing agent for epoxy resins B, 10-40% by weight of at least one toughness improver D, and 4-12% by weight of a room temperature solid, crystalline polyester polyol PP. This enables compositions that are suitable for spray application and are not expressed from the hem flange in the crimping operation.

Abstract: A method for adhesively bonding two substrates, including the steps: (a) applying a liquid, radiation-curable primer composition onto the surface of a first substrate; (b) curing the liquid, radiation-curable primer composition by applying radiation with a suitable wavelength, intensity and temporal exposure such that the radiation-curable primer composition is cured into a solidified, coherent or interrupted layer adhering to the surface of the substrate; (c) optionally storing the primed substrate for a time of up to 6 months; (d) applying a curable adhesive composition onto the cured primer composition on the substrate; (e) joining a second substrate to the adhesive composition on the first substrate such that an adhesive bond is formed between the substrates, wherein the surface of the second substrate to be adhesively bonded is optionally pre-treated to improve adhesion before step (e) is performed; (f) curing the curable adhesive composition.

Abstract: A moisture-curable composition, including at least one polymer P containing reactive silane groups; between 0.1 and 5 wt.-%, based on the total composition, of at least one organosilane OS of the formula (I), wherein R20 independently stands for a monovalent, optionally cyclic or branched, hydrocarbyl or heterocarbyl radical, optionally comprising aromatic moieties, which contains 1 to 12 carbon atoms and wherein the carbon atom next to the silicon atom either bonds via a C?C double bond to another carbon atom or bonds to a heteroatom selected from O, N, and S; R21 independently stands for a linear, cyclic, or branched divalent hydrocarbyl radical having 2 to 12 carbon atoms and optionally containing aromatic moieties; R22 stands for a hydrogen atom or a group of the formula (Ia); characterized in that the curable composition does not contain catalytically active organometallic or acidic compounds.

Abstract: A thermosetting epoxy resin composition including, as curing agent, a dihydrazide selected from the group consisting of glutaric dihydrazide, adipic dihydrazide and pimelic dihydrazide, in combination with a specific urea accelerator, which features good storage stability and a low curing temperature. The epoxy resin composition is especially suitable for use as bodywork adhesive.

Abstract: An admixture for cement based compositions, the admixture including a) an aqueous solution of polycarboxylate ether and b) at least one functionalized nanomaterial selected from carbon nanotubes functionalized by carboxyl groups and carbon nanofibers functionalized by carboxyl groups, wherein the at least one functionalized nanomaterial is dispersed in the aqueous solution. Low dosages of the admixture in cement based compositions result in significant enhancement of compressive strength.

Abstract: A mortar composition, in particular a leveling mortar composition, including: a) 3-45 wt. % of a hydraulic binder, b) 15-80 wt. % of lightweight aggregates, c) 5-50 wt. % of a polymer.

Abstract: A process for the production of backfilling pastes for underground operations, the process including or essentially consisting of the mixing of a) cement, b) tailings from underground operations, c) optionally extra water, d) at least one polycarboxylate ether, and e) calcium hydroxide; and a method for controlling the flow of a backfilling paste for underground operations, the method including at least one step of admixing an admixture including at least one polycarboxylate ether and calcium hydroxide to a mixture of cement, tailings, and water.

Abstract: A cementitious composition with accelerated curing at low temperatures particularly at temperatures <5° C., especially at temperatures <0° C. The cementitious composition consists of 2 components with a first component A including at least one ordinary Portland cement, at least one cement selected from calcium aluminate cement and/or calcium sulfoaluminate cement, a powder P, selected from the group consisting of carbonates or hydrogen carbonates of alkali and/or alkaline earth metals, optionally aggregates, optionally other additives and a second component B comprising at least one accelerator, an anti-freeze agent, water, and optionally other additives. The composition shows increased development of compressive strength, maintain good workability, and have particularly low shrinkage, also when cured at temperatures <5° C., especially <0° C., and as low as ?10° C.

Abstract: A polymer material in manufacture of 3D articles by means of additive manufacturing, the polymer material including: a) at least one propylene polymer P having a flexural modulus determined according to ISO 178:2019 standard of at least 150 MPa, b) at least one propylene-based elastomer PBE having a flexural modulus determined according to ISO 178:2019 standard of not more than 100 MPa, and c) at least one solid inorganic compound SC.

Abstract: A thermally expandable composition includes at least one polymer P, at least one chemical blowing agent CBA, at least one physical blowing agent PBA composed of expandable microspheres, and at least one filler F. A damping element includes a first layer composed of an expansion material and a second layer composed of an acoustic damping material. The damping element is suitable for providing vibration and/or noise damped systems.

Abstract: Binders for geopolymers, which include: a) not less than 30 w % of a mixture of at least two chemically different aluminosilicates, b) not less than 20 w % of Ordinary Portland cement, and c) 8-20 w % of a mixture of calcium sulfoaluminate cement or calcium aluminate cement with a source of calcium sulfate, wherein in the mixture the weight ratio of calcium sulfate to calcium sulfoaluminate and/or calcium aluminate is between 0.08-1.5, preferably 0.3-1.1, more preferably 0.6-1.1. Also, geopolymers using such binders as well as their use in various construction methods.

Abstract: A single-component sealant or adhesive composition, including: a) an aqueous polymer dispersion comprising water and at least one water-dispersed polymer P having a median particle size D50 of less than 150 nm, b) at least one water-dispersed or water-dissolved epoxy- or carbodiimide-functional cross-linker C, wherein the pH of the composition is adjusted in the range of 7 to 12, and wherein the at least one water-dispersed polymer P is included in the composition with an amount of at least 45 wt.-%, based on the total composition, and wherein the epoxy- or carbodiimide-functional cross-linker C is included in the composition with an amount of between 0.5 and 5 wt.-%, based on the total composition.

Abstract: The present invention relates to an inorganic binder system comprising blast furnace slag, and at least one solid alkali metal silicate, wherein the inorganic binder system is obtainable by co-grinding a mixture comprising the blast furnace slag and the at least one solid alkali metal silicate.

Abstract: A one-component thermosetting epoxy resin adhesive, includes: a) at least one epoxy resin A of the formula (II): wherein the substituents R? and R? independently of one another are either H or CH3 and the index s has a value of 0-12, at least one epoxy novolac EN of the formula: where R2= or CH2, R1=H or methyl and z=0-7, at least one trifunctional or higher functional glycidyl amine type epoxy resin GA, least one latent hardener B for epoxy resins and at least at least one toughness improver D. The epoxy resin adhesive is notable in particular for providing a one-component thermosetting epoxy resin adhesive which shows good adhesion on metal substrates at temperatures around 80° C., even when cured at relatively low temperatures.

Abstract: A one-component thermosetting epoxy resin compositions that feature good storage stability. The epoxy resin compositions are especially suitable for use as bodywork adhesive and for production of structural foams.

Abstract: A basecoat coating composition includes an aromatic polyurethane pre-polymer having isocyanate terminal end groups, a first solvent and optionally a second VOC-exempt solvent, in which the total composition formulation has a VOC content of less than 97 g/L. A topcoat coating composition includes an aliphatic polyurethane pre-polymer having isocyanate terminal end groups, a first solvent and optionally a second VOC-exempt solvent, in which the total composition formulation has a VOC content of less than or equal to 95 g/L. The total composition formulations of the basecoat and/or topcoat may have a VOC content of less than 50 g/L. A membrane system may include an optional primer coating, and the above described basecoat and topcoat coating compositions.

Abstract: A method and system for evaluating crack intensity on polymeric sheet based on predetermined scale of crack intensity grades, which includes the steps of a) recording digital image of at least portion of surface of polymeric sheet using apparatus for recording digital images; and b) automatic classification of crack intensity by computer-implemented program for pattern recognition by means of trained artificial neural network, including 1) inputting digital image or one or more subareas of digital image to trained artificial neural network as input data, 2) classification by artificial neural network by assigning grade from predetermined scale of crack intensity grades to digital image or one or more subareas and 3) outputting assigned grade or grades for digital image and/or one or more subareas as output data, wherein artificial neural network is trained in advance in learning phase with plurality of digital images or subareas thereof of polymeric sheet surface portions.