Abstract:
The present invention relates to new catalysts and production thereof as well as the preferred use thereof in the production of polyisocyanate polyaddition products. The described catalysts are tetravalent tin compounds with at least one ligand bonded via at least one oxygen atom or sulfur atom and containing at least one nitrogen atom.
Abstract:
The present invention relates to new catalysts and production thereof as well as the preferred use thereof in the production of polyisocyanate polyaddition products.
Abstract:
The invention relates to foams of high thermal stability, to the production thereof from organic polyisocyanates and polyepoxides, and to the use of the foams.
Abstract:
The present invention relates to the use of specific inorganic Sn(IV) for the production of polyisocyanate polyaddition products from a) at least one aliphatic, cycloaliphatic, araliphatic and/or aromatic polyisocyanate, b) at least one NCO-reactive compound, c) at least one thermolatent inorganic tin-containing catalyst, d) optionally further catalysts and/or activators other than c), e) optionally fillers, pigments, additives, thickeners, antifoams and/or other auxiliary substances and additives, wherein the ratio of the weight of the tin from component c) and the weight of component a) is less than 3000 ppm when component a) is an aliphatic polyisocyanate and less than 95 ppm when component a) is an aromatic polyisocyanate, wherein as thermolatent catalysts cyclic tin compounds of formula I, II or III: wherein n>1, are used.
Abstract:
The present invention relates to high-value polyurethane (PUR) and polyurethaneurea elastomers, which can be processed in a particularly simple manner by use of low-viscosity prepolymers based on naphthalene 1,5-diisocyanate, and to a process for production thereof.
Abstract:
The present invention relates to high-value polyurethane (PUR) and polyurethaneurea elastomers, which can be processed in a particularly simple manner by use of low-viscosity prepolymers based on naphthalene 1,5-diisocyanate, and to a process for production thereof.
Abstract:
The invention relates to moulded parts provided with reinforcing materials and consisting of polyurethane urea elastomers having defined urea and urethane contents, and to the use thereof.
Abstract:
The invention relates to foams of high thermal stability, to the production thereof from organic polyisocyanates and polyepoxides, and to the use of the foams.