Abstract: The invention relates to novel modified polyisocyanurate plastics, obtainable by means of catalytic trimerization of a composition (A), wherein the composition (A) contains oligomeric, modified polyisocyanates (B), which represent a reaction product from an oligomeric polyisocyanate (B1) and at least one functionalization reagent (B2) which is reactive to isocyanate groups, wherein the composition (A) comprises a content of monomeric diisocyanates of 20 wt % at maximum and wherein the at least one functionalization reagent (B2) which is reactive to isocyanate groups has at least one relative functional group which is reactive to isocyanate groups and which is not an isocyanate group. The invention further relates to the method by which the polyisocyanurate plastics according to the invention are obtainable, to the use of the polyisocyanurate plastics according to the invention for producing coatings, films, semi-finished products, composite materials and molded parts, and substrates coated by such a coating.

Abstract: The present invention relates to novel modified polyisocyanurate plastics obtainable by catalytic trimerization of a composition A), wherein the composition A) comprises oligomeric modified polyisocyanates B) that are a reaction product of an oligomeric polyisocyanate B1) and at least one functionalizing reagent B2) reactive toward isocyanate groups, where the composition A) has a content of monomeric diisocyanates of not more than 20% by weight and where the at least one functionalizing reagent B2) reactive toward isocyanate groups has at least one functional group reactive toward isocyanate groups which is not an isocyanate group. The invention further relates to the process from which the polyisocyanurate plastics of the invention are obtainable, to the use of the polyisocyanurate plastics of the invention for production of coatings, films, semifinished products, composites and moldings, and to substrates coated with such a coating.

Abstract: The present invention relates to process for producing polyisocyanurate plastics, comprising the following steps: a) providing a polyisocyanate composition A) which comprises oligomeric polyisocyanates and is low in monomeric diisocyanates, “low in monomeric diisocyanates” meaning that the polyisocyanate composition A) has a content of monomeric diisocyanates of not more than 20% by weight, b) catalytically trimerizing the polyisocyanate composition A) using at least one tertiary organic phosphine catalyst B). The invention further relates to polyisocyanurate plastics obtainable by the process according to the invention, to coatings, films, semifinished products and mouldings comprising or consisting of the polyisocyanurate plastic according to the invention, and to the use of the polyisocyanurate plastics according to the invention for production of coatings, films, semifinished products and mouldings.

Abstract: The present invention relates to a process for producing translucent polyurethane and polyisocyanurate foams by reaction of a component A, comprising A1 at least one polyol reactive with component B; A2 optionally at least one amine; A3 water and optionally formic acid or at least one physical blowing agent or mixtures thereof; A4 at least one foam stabilizer; A5 optionally auxiliary and/or additive substances; A6 optionally at least one flame retardant; A7 at least one catalyst; and a component B, comprising B1 at least one aliphatic or cycloaliphatic polyisocyanate component or a combination thereof; and B2 optionally at least one hydrophilized isocyanate; and B3 more than or equal to 10 parts by weight and up to 70 parts by weight of an aromatic polyisocyanate component, wherein the parts by weight of B3 are based on the sum of the parts by weight of B1 to B3 which are normalized to 100 parts by weight.

Abstract: The present invention relates to a modified polyisocyanate and use thereof, in particular as a crosslinking component of water-soluble or water-dispersible coatings. The modified polyisocyanate is obtained by a reaction of a system comprising the following components: at least an aminosulfonic acid; at least a polyisocyanate; at least a tertiary amine; and optionally a polyether alcohol containing an ethylene oxide group. The modified polyisocyanate comprises at least an iminooxadiazinedione structure and at least an isocyanurate structure, the weight ratio of the iminooxadiazinedione structure to the isocyanurate structure being 1:300 to 1:5. The amount of sulfonate group of the modified polyisocyanate is 0.75% by weight to 1.1% by weight, based on the amount of the modified polyisocyanate as 100% by weight. The viscosity thereof is 500 mPa·s to 10000 mPa·s, as determined according to DIN EN ISO 3219:1994-10 at a temperature of 23° C. and a shear rate of 10 s?1.

Abstract: The present invention relates to a layer composite comprising a lower base paint layer and a cover layer arranged thereabove on a substrate, wherein the base paint is greater than or equal to 50 wt. % and less than 100 wt. % of polymers selected from the group consisting of polyacrylates, polyurethanes, polyether polyols, polycarbonate polyols, polyester polyols, melamine resins, alkyd resins or mixtures thereof; the cover layer is greater than or equal to 40 wt. % and less than or equal to 100 wt. % of prepolymers containing silane groups and/or the crosslinking products thereof; and the base paint is greater than or equal to 0.5 wt. % and less than or equal to 15 wt. % of prepolymers containing silane groups and/or the crosslinking products thereof, and wherein the prepolymers containing silane groups and/or the crosslinking products thereof have at least one thiourethane and/or urethane unit in the molecule.

Abstract: The invention relates to a method for producing a polyisocyanate polymer and to the polyisocyanate polymer obtainable from the method and to the use thereof as part of a two-stage method for producing a polyisocyanurate plastic, in particular for producing coatings, films, semi-finished products or molded parts containing such a polyisocyanurate plastic.

Abstract: The invention relates to a process for producing polyisocyanates containing sulfonate groups, the products obtainable or obtained by said process and also to the use thereof as starting component for producing polyurethane plastics. The invention further relates to coating compositions comprising polyisocyanates containing sulfonate groups and also to the substrates coated with said coating compositions.

Abstract: The present invention relates to aqueous, curable composition, comprising or consisting of A) at least one uretdione prepolymer, which comprises at least one uretdione group, and which is obtainable by reacting A1) at least one uretdione polyisocyanate having an isocyanate functionality of at least 2.0, whereby said uretdione polyisocyanate is obtained from at least one aliphatic polyisocyanate, with A2) at least one compound comprising at least one Zerewitinoff-active group, and A3) at least one reactant, which comprises at least one Zerewitinoff-active group and being different from A2 or which is H2O, preferably in the presence of at least one catalyst, to obtain the uretdione prepolymer, wherein the prepolymer has an acid number of at most 4 mg KOH/g, preferably determined according to DIN EN ISO 2114:2002-06 as 37 wt. % aqueous dispersion; and B) optionally at least one compound, which comprises at least one Zerewitinoff-active group; and C) at least one azolate-compound.

Abstract: The invention relates to a polyisocyanate mixture comprising a polyisocyanate component A) having aliphatically and/or cycloaliphatically bonded isocyanate groups and a polyisocyanate component B) having araliphatically and/or aromatically bonded isocyanate groups, characterized in that the polyisocyanate component A) comprises at least 0.85% by weight of sulfonate groups (calculated as SO3; molar weight=80 g/mol) in chemically bonded form and the proportion of the polyisocyanate component B) is 7 to 43% by weight of the total amount of the components A) and B). The invention further relates to the use thereof and also coating compositions comprising the polyisocyanate mixture and also the substrates coated with these coating compositions.

Abstract: The invention relates to a method for producing an object from a precursor, comprising the steps: I) depositing a radically cross-linked resin on a carrier so that a layer of a construction material connected to the carrier is obtained, said layer corresponding to a first selected cross-section of the precursor; II) depositing a radically cross-linked resin on a previously applied layer of the construction material so that an additional layer of the construction material is obtained, which corresponds to a further selected cross-section of the precursor and which is connected to the previously applied layer; III) repeating step II) until the precursor is formed, wherein, at least in step II), the deposition of a radically cross-linked resin is carried out by allowing energy to act on a selected region of a radically cross-linkable resin, corresponding to the respectively selected cross-section of the object, wherein the radically cross-linkable resin has a viscosity (23° C.

Abstract: The invention relates to aqueous uretdione group-containing compositions comprising or consisting of (A) at least one uretdione group-containing curing agent based on aliphatic, cycloaliphatic, araliphatic, and/or aromatic polyisocyanates which do not contain chemically bonded hydrophilating groups; (B) at least one hydroxy group-containing polyol which contains at least one chemically bonded carboxylic acid group; (C) optionally solvents; and (D) optionally auxiliary agents and additives; wherein the quantity ratio of the components (A) and (B) is measured such that the molar ratio of the NCO groups of the curing agent (A), said groups being provided in the form of uretdione, to the NCO reactive groups of the polyol (B) equals 3.0:0.5 to 0.5:3.0, and A and B are provided as a physical mixture.

Abstract: The present invention relates to a catalyst system comprising: A) at least one compound selected from azoles, oxazoles, thiazoles, benzotriazole, benzimidazole, benzoxazole and salts thereof; B) at least one acid catcher, which contains at least one epoxy group; and C) at least one catalyst containing an N,N,N?-trisubstituted amidine structure with an amidine group content of from 12.0 to 47.0 wt %, calculated as CN2 with molecular weight=40. The invention also relates to a kit which comprises the catalyst system of the present invention and an aqueous uretdione dispersion having an acid number of from 1 to 100 KOH/g and additionally at least one carboxyl group. The invention further relates to a method for producing a polyurethane layer using the catalyst system of the present invention and said uretdione dispersion, and to the obtained polyurethane layer, and to the use of the catalyst system for curing aqueous acidic uretdione dispersions and/or for the production of paints or coatings.

Abstract: The invention relates to aqueous uretdione group-containing compositions comprising or consisting of (A) at least one uretdione group-containing curing agent based on aliphatic, cycloaliphatic, aliphatic and/or aromatic polyisocyanates which do not contain chemically bonded hydrophilating groups; (B) at least one polyacrylate copolymer; (C) optionally solvents; and (D) optionally auxiliary agents and additives; wherein the quantity ratio of the components (A) and (B) is measured such that the molar ratio of the NCO groups of the curing agent (A), said groups being provided in the form of uretdione, to the NCO reactive groups of the polyacrylate copolymer (B) equals 3.0:0.5 to 0.5:3.0, and A and B are provided as a physical mixture.

Abstract: The present invention relates to a specific uretdione prepolymer, and an aqueous curable composition based on the specific uretdione prepolymer. Furthermore, it pertains to a process for curing said aqueous curable composition, the cured article obtained by this process and additionally to the use of said aqueous composition for coatings, adhesives and/or sealants.

Abstract: The invention relates to a polyurethane powder coating material, to the use of such a polyurethane powder coating material, to a method for producing a coating, and to coated substrates.

Abstract: A method for producing polyurethanes containing alkoxysilane groups comprises the step of reacting a compound containing at least one NCO group with a compound containing at least one Zerewitinoff-active H atom in the presence of a catalyst component, wherein the compound containing at least one NCO group and/or the compound containing at least one Zerewitinoff-active H atom contain at least one alkoxysilane group, to obtain a polyurethane containing alkoxysilane groups. The invention also relates to a polymer containing alkoxysilane groups, a method for producing a curable polymer, a curable polymer, a cured polymer, and the use thereof. The polymers contain a complex of a lanthanide with at least one beta-diketonate ligand, preferably Yb(acac)3, and are free from organic tin compounds.

Abstract: The invention relates to a method for producing polyurethanes containing silane groups, to products that can be obtained by means of said method, and to the use of said products for producing cross-linkable binders, in particular for coatings, sealant raw materials, or glue raw materials.

Abstract: The invention relates to a method for preparing a silane-terminated polymer by reacting a polyol A) with a diisocyanate B), an isocyanatosilane C) and an amino silane E), wherein the polyol component A) is reacted simultaneously with a mixture of at least one diisocyanate B) and one isocyanatosilane C), and the resulting product is subsequently reacted with the amino silane E) to produce the silane-terminated polymer. The method according to the invention can be used to prepare mixed silane-terminated polymers having a low viscosity.

Abstract: The invention relates to coating agents that contain thioallophanates, containing silane groups, as cross-linking agents and to the use of said coating agents to produce coatings, in particular clear coats for automobile painting.