Abstract: The invention relates to a method for producing isocyanate-terminated, urethane group-containing prepolymers, comprising reacting a reaction mixture that contains a stoichiometric excess of at least one aliphatic and/or cycloaliphatic diisocyanate and a polyol composition having an OH number >400, characterized in that the reaction mixture is mixed with a specific power input of 0.5 kW/m3 to 40 kW/m3, relative to the total volume of the reaction mixture.

Abstract: The present invention relates to a process for preparing a polyisocyanate composition containing urethane groups, and to the polyisocyanate compositions containing urethane groups that are obtained or obtainable by this process.

Abstract: The invention relates to a novel method for producing polyisocyanurates comprising isocyanate groups, based on 2,4- and 2,6-toluylene diisocyanate (TDI) and to the use thereof in coating compositions.

Abstract: The invention relates to a novel method for producing polyisocyanurates comprising isocyanate groups, based on 2,4- and 2,6-toluylene diisocyanate (TDI) and to the use thereof in coating compositions.

Abstract: The invention relates to polyisocyanates comprising urethane groups, based on toluylene diisocyanate, to a method for their production, and to their use as the polyisocyanate component in one- and two-component polyurethane coatings.

Abstract: The invention relates to a novel method for producing polyisocyanurates comprising isocyanate groups, based on 2,4- and 2,6-toluylene diisocyanate (TDI) and to the use thereof in coating compositions.

Abstract: The invention relates to a process for preparing polyisocyanates containing isocyanurate groups by trimerising cycloaliphatic diisocyanates using a catalyst solution comprising at least one quaternary ammonium hydroxide, characterized in that the catalyst solution is metered in such that the reaction temperature is >90° C. and ?140° C.

Abstract: The invention relates to a novel method for producing polyisocyanurates comprising isocyanate groups, based on 2,4- and 2,6-toluylene diisocyanate (TDI) and to the use thereof in coating compositions.

Abstract: The invention relates to polyisocyanates comprising urethane groups, based on toluylene diisocyanate, to a method for their production, and to their use as the polyisocyanate component in one- and two-component polyurethane coatings.

Abstract: The invention relates to a process for preparing polyisocyanates containing isocyanurate groups by trimerising cycloaliphatic diisocyanates using a catalyst solution comprising at least one quaternary ammonium hydroxide, characterized in that the catalyst solution is metered in such that the reaction temperature is >90° C. and ?140° C.

Abstract: A process for the removal of at least one volatile compound from a reactive or unreactive mixture of substances with the aid of at least one micro-evaporator, the micro-evaporator displaying channels for carrying the mixture of substances having a hydraulic diameter of 5 to 1000 ?m and a specific evaporator surface area of at least 103 m2/m3.

Abstract: The invention relates to a novel process for preparing low-monomer-content trimers based on 2,4- and/or 2,6-diisocyanatotoluene (TDI). A catalytic trimerization is carried out in a mixture of from 20 to 80% by weight of a diisocyanate component containing at least 80% by weight of 2,4- and/or 2,6-diisocyanatotoluene, from 20 to 80% by weight of solvent, and 0–20% by weight of an alcohol component, and also phenolic catalysts containing dialkylamino-methyl groups. In the course of ongoing trimerization, in one or more steps, additional monomeric 2,v4-diisocyanatotoluene is metered in.

Abstract: The invention relates to a novel process for preparing low-monomer-content trimers based on 2,4- and 2,6-diisocyanatotoluene (TDI) and to the use thereof in coatings. The trimers are produced from a mixture of from 20 to 80% by weight of diisocyanate component containing at least 80% by weight of 2,4- and/or 2,6-diisocyanatotoluene and from 20 to 80% by weight of solvents and/or diluents and also phenolic catalysts containing dialkylaminomethyl groups.

Abstract: A process for the removal of at least one volatile compound from a reactive or unreactive mixture of substances with the aid of at least one micro-evaporator, the micro-evaporator displaying channels for carrying the mixture of substances having a hydraulic diameter of 5 to 1000 ?m and a specific evaporator surface area of at least 103 m2/m3.

Abstract: The present invention relates to a process for producing uretdione group-containing polyaddition products, which are solid below 40° C. and liquid above 125° C.

Abstract: This invention relates to polyurethane compositions which cross-link via a silane polycondensation and contain at least one alkoxysilane-functional polyurethane, at least one basic filler, at least one reaction product of an aminosilane with a maleic or fumaric ester, at least one organometallic compound and optionally additional auxiliary substances, to a process for their preparation, and to their use.

Abstract: The invention relates to a novel process for preparing low-monomer-content trimers based on 2,4- and 2,6-diisocyanatotoluene (TDI) and to the use thereof in coatings. The trimers are produced from a mixture of from 20 to 80% by weight of diisocyanate component containing at least 80% by weight of 2,4- and/or 2,6-diisocyanatotoluene and from 20 to 80% by weight of solvents and/or diluents and also phenolic catalysts containing dialkylaminomethyl groups.

Abstract: The invention relates to a novel process for preparing low-monomer-content trimers based on 2,4- and/or 2,6-diisocyanatotoluene (TDI). A catalytic trimerization is carried out in a mixture of from 20 to 80% by weight of a diisocyanate component containing at least 80% by weight of 2,4- and/or 2,6-diisocyanatotoluene, from 20 to 80% by weight of solvent, and 0-20% by weight of an alcohol component, and also phenolic catalysts containing dialkylamino-methyl groups. In the course of ongoing trimerization, in one or more steps, additional monomeric 2,v4-diisocyanatotoluene is metered in.

Abstract: The present invention relates to new alkoxysilane-functional piperazinone derivatives, a process for their production, as well as their use as additives in sealants, adhesives, lacquers or coating agents.

Abstract: This invention relates to polyurethane prepolymers which comprise alkoxysilane terminal groups and which are based on special, very high molecular weight polyurethane prepolymers, to a method of producing them and to their use as binders for low-modulus sealing materials.