Abstract: The invention relates to a method for producing foamed molded bodies comprising the steps of A) providing a mold, and B) introducing a foam-forming reaction mixture into the mold under variable pressure of injection, wherein the method is characterized in that the foam-forming reaction mixture has a fiber time of ?20 s to ?60 s.

Abstract: A process for the production of ballast for railway track laying, road construction, dam construction and bank protection, wherein ballast stones are spread out to form ballast and a reaction mixture for the preparation of a polyurethane foam, produced from components by a low-pressure process, is applied between the spread ballast stones.

Abstract: The invention relates to a method for producing foamed molded bodies comprising the steps of A) providing a mold, and B) introducing a foam-forming reaction mixture into the mold under variable pressure of injection, wherein the method is characterized in that the foam-forming reaction mixture has a fiber time of ?20 s to ?60 s.

Abstract: The invention relates to a composite material made of a layer of inorganic, non-metal material and a sandwich element, and to a method for producing said composite material.

Abstract: A process for the production of ballast for railway track laying, road construction, dam construction and bank protection, wherein ballast stones are spread out to form ballast and a reaction mixture for the preparation of a polyurethane foam, produced from components by a low-pressure process, is applied between the spread ballast stones.

Abstract: A method for producing foamed mouldings comprises the steps of providing a mould (1) and introducing a foam-forming reaction mixture (6) into the mould (1), wherein the foam-forming reaction mixture (1) is introduced into the mould (1) under constant injection pressure and in a quantity which is variable over time. The introduced quantity of the foam-forming reaction mixture is changed over time by varying the output of a pump motor acting on the reaction mixture.

Abstract: The invention relates to the use of fibre-reinforced polyurethane to form a rail (10, 11) for a mounting arrangement to arrange at least one element (12) on a substrate (13) or on at least one receiving structure, in particular on a framework, where the rail (10, 11) has a C-shaped cross section with an open side (14), so that it is possible for the rail (10, 11) to receive at least one rear-engaging element (15) to connect to the element (12) to be arranged.

Abstract: The present invention relates to a method for the production of layers and moulded parts consisting of reactive plastic, the reactive components being intermixed on a plurality of planes with the aid of mixed gases. The invention further relates to a device which allows a corresponding method.

Abstract: The invention relates to a method for producing sound-absorbing flexible polyurethane foam mouldings.

Abstract: The invention relates to a method for producing a flameproof polyurethane (PUR) spray foam, especially a rigid PUR spray foam, to a spray foam body so produced and to the use thereof for heat insulation.

Abstract: The invention relates to a fibre-reinforced polyurethane moulded part which has structures such as ribs, struts or domes, said structures being likewise fibre-reinforced.

Abstract: The invention relates to a device and a process for the preparation of polyurethane composite materials reinforced by fibers or solid particles, comprising at least one PUR spray-mixing head with a defined spraying direction and at least one application means for the directional application of fibers and/or solid particles, characterized in that the exiting direction of the fibers and/or solid particles can be changed in space relative to the spraying direction of the PUR spray-mixing head.

Abstract: The invention relates to a process for the production of fiber-reinforced composite components in which an outer film is bonded with a layer containing fiber-reinforced polyurethane, characterised in that a) first an elastic intermediate layer which has a modulus of elasticity of 0.5 MPa to 50 MPa and a thickness of 0.3 mm to 6 mm, is applied to the outer film which has a thickness in the range of 0.2 mm to 5 mm, and then b) at least one other layer is applied to the back of the intermediate layer, at least one layer containing fiber-reinforced polyurethane being applied.

Abstract: The present invention relates to a process for producing a solids-containing PUR spray jet and also to a spray attachment, wherein a solids-containing gas stream is introduced into a liquid jet of a PUR reaction mixture.

Abstract: Polyurethane molded foams having a surface region and an interior region and comprising a flame-retardant solid, wherein the flame-retardant solid is present in the surface region in a proportion higher than a proportion of the flame-retardant solid in the interior region; processes for preparing the same; and materials comprising such foams.

Abstract: The present invention relates to a process for the production of polyurethane molded articles in which the polyurethane-forming mixture applied to reinforcing fiber layer(s) or a reinforcing fiber mat includes a gas and a foam stabilizer. These molded articles are useful in automotive and construction applications and in furniture.

Abstract: The invention relates to a process for the production of fibre-reinforced composite components in which an outer film is bonded with a layer containing fibre- reinforced polyurethane, characterised in that a) first an elastic intermediate layer which has a modulus of elasticity of 0.5 MPa to 50 MPa and a thickness of 0.3 mm to 6 mm, is applied to the outer film which has a thickness in the range of 0.2 mm to 5 mm, and then b) at least one other layer is applied to the back of the intermediate layer, at least one layer containing fibre-reinforced polyurethane being applied.

Abstract: Structural elements are produced by applying a polyurethane (PUR)-forming reactive mixture and solid particles to a fibrous web in amounts such that the particle density is from 0.01 to 10.0 g of solid particles/cm2 of coated fibrous web surface being set, and then pressing to harden the fibrous web coated with the not-fully-cured polyurethane reactive mixture containing solid particles.

Abstract: The present invention relates to a process for the production of polyurethane molded articles in which the polyurethane-forming mixture applied to reinforcing fiber layer(s) or a reinforcing fiber mat includes a gas and a foam stabilizer. These molded articles are useful in automotive and construction applications and in furniture.