Abstract: The present invention relates to the use of tertiary amines as catalysts for the cross-linking of isocyanate groups which are aliphatically and/or cyclo-aliphatically bonded. The catalysts according to the invention have the particular advantage that they are thermally latent.

Abstract: The invention relates to compounds and methods for extending the pot life of mixtures of isocyanates and isocyanate-reactive compounds when using acidic phosphoric acid ester as a mould release agent.

Abstract: The invention relates to a method for producing a treated object, comprising the steps: a) producing an object by means of additive manufacturing, the object being produced by the repeated arrangement, layer by layer, of at least one first material on a substrate spatially selectively in accordance with a cross-section of the object, the method comprising the additional method step: b) at least partially bringing the object, which is still on the substrate or has already been detached from the substrate and which has been produced by additive manufacturing, into contact with a liquid heated to ?T or a powder bed of a second material heated to ?T for a time ?1 minute in order to obtain the treated object, T standing for a temperature of ?25° C. The invention further relates to an object produced by a method of this type.

Abstract: The invention relates to compounds and methods for extending the pot life of mixtures of isocyanates and isocyanate-reactive compounds when using acidic phosphoric acid ester as a mould release agent.

Abstract: The present invention relates to urethane, thiourethane and urea adducts of tertiary amines and the use thereof as catalysts for the crosslinking of aliphatically, cycloaliphatically, araliphatically or aromatically bonded isocyanate groups with one another. The catalysts according to the invention have the particular advantage that they are thermolatent.

Abstract: The present invention relates to the use of tertiary amines as catalysts for the cross-linking of isocyanate groups which are aliphatically and/or cyclo-aliphatically bonded. The catalysts according to the invention have the particular advantage that they are thermally latent.

Abstract: The invention relates to a process for producing an optical casting comprising at least one volume-holographic optical element by means of at least one casting operation, the process comprising the following steps: providing a casting mould comprising a first mould section having a flat, spherical, aspherical or free-form first surface and a second mould section having a flat, spherical, aspherical or free-form second surface, the first mould section being connectable to the second mould section to form the casting mould, providing at least one holographic optical element, positioning and aligning the at least one holographic optical element with respect to the first mould section or/and with respect to the second mould section, combining the first and second mould sections to form the casting mould, introducing casting material in one or more casting steps, the casting material having a maximum viscosity at 25° C.

Abstract: A composition comprising an isocyanate component A) comprising at least one cycloaliphatic or araliphatic diisocyanate, a polyol component B) comprising at least one polyol having an OH number of 80 to 1000 mg KOH/g, an additive component C) comprising at least one internal demoulding agent, and a catalyst component D) comprising at least one inorganic metal complex as thermally latent catalyst, characterized in that the thermally latent catalyst has a quotient of reaction rates between catalysed reaction and uncatalysed reaction at 30° C. of =5.0 and at 60° C. of =1.1. The present invention further provides a process for producing an elastomer and for the use of the composition for production of transparent shaped bodies.

Abstract: The invention relates to a process for producing an optical casting comprising at least one volume-holographic optical element by means of at least one casting operation, the process comprising the following steps: providing a casting mould comprising a first mould section having a flat, spherical, aspherical or free-form first surface and a second mould section having a flat, spherical, aspherical or free-form second surface, the first mould section being connectable to the second mould section to form the casting mould, providing at least one holographic optical element, positioning and aligning the at least one holographic optical element with respect to the first mould section or/and with respect to the second mould section, combining the first and second mould sections to form the casting mould, introducing casting material in one or more casting steps, the casting material having a maximum viscosity at 25° C.

Abstract: The invention relates to a composition for producing transparent polythiourethane bodies, containing or consisting of A) a polyisocyanate component that contains at least one polyisocyanate having an isocyanate group functionality of at least 2 per molecule, B) a thiol component that contains at least one polythiol having a thiol group functionality of at least 2 per molecule, and if appropriate, C) auxiliary and additional agents, the ratio of isocyanate groups to groups that are reactive to isocyanates being between 0.5:1 to 2.0:1, and said composition being characterised in that it also contains D) at least one aromatic nitrile. The invention also relates to a method for producing transparent polythiourethane bodies by reacting such a composition, to the polythiourethane bodies produced in this manner, to the use of aromatic nitriles for producing transparent polythiourethane bodies, and to a mixture of a polyisocyanate and an aromatic nitrile.