Abstract: A polyol formulation for producing flameproof polyurethane/polyisocyanate rigid foams (referred to individually or jointly in the following as “PUR/PIR rigid foams”), containing a polyester polyol having an OH number ?250 mg KOH/g, a functionality of 1.5 to 2.5 and a free glycol content with Mn<150 g/mol of <6 wt. %, a polyethylene glycol with an average molecular weight of <700 g/mol and an average functionality of <2.5 and specific polyethyleneglycol alkylphenyl ethers, and methods for producing PUR/PIR rigid foams using said polyol formulation and to the PUR/PIR rigid foams obtained thereby are provided.

Abstract: The invention relates to flame-retardant polyurethane foam materials or polyurethane/polyisocyanurate foam materials (also referred to individually or collectively as “PUR/PIR foam materials” below) and to methods for producing PUR/PIR foam materials by reacting a reaction mixture containing A1 an isocyanate-reactive component, A2 a propellant, A3 a catalyst, A4 optionally an additive, and A5 a flame retardant with B an isocyanate component, wherein the production is carried out using an index of 80 to 600. The invention is characterized in that the flame retardant A5 contains (hydroxymethyl)phosphonate and optionally the dimer thereof as component A5.1.

Abstract: The present disclosure relates to a method for producing a composition containing isocyanate and isocyanurate groups having the following steps: 1) mixing a monomer polyisocyanate with polymer diphenylmethane diisocyanate, thereby obtaining a mixture, and 2) allowing the mixture obtained in step 1) to react in the presence of a trimerization catalyst, thereby obtaining a composition containing isocyanate and isocyanurate groups. The monomer polyisocyanate used in step 1) has a total chlorine content of <100 ppm (determined using an X-ray fluorescence analysis according to DIN 51577 (1994) part 4). The present disclosure further relates to compositions which can be obtained using the aforementioned method, to the production of PUR/PIR rigid foams made of the compositions, to the rigid foams themselves, and to the use of such rigid foams.

Abstract: The invention relates to a process for producing rigid polyurethane (PUR) and polyurethane/polyisocyanurate (PUR/PIR) foams, comprising the steps of i) producing a reaction mixture containing the components A) an isocyanate-reactive component, B) a polyisocyanate component, and C) a blowing agent, and ii) applying the reaction mixture by using a system comprising at least one casting device. The casting device (100) having: a supply port (12) for feeding the reaction mixture (10), at least one discharge gap (13) extending in a transverse direction (Q) for the discharge of the reaction mixture (10), two gap-forming plates (14) arranged opposite one another, a gap space (15) extending between the gap-forming plates (14) above the discharge gap (13) in a height direction (H), wherein the reaction mixture can be introduced into the gap space (15), distributed over the length of the supply duct (16).

Abstract: The invention relates to a polyurethane-polyurea binder which contains specific silicones or polyvinyl pyrrolidones and which is suitable for the manufacture of press materials from organic and/or inorganic materials, to the corresponding use of said binders and to the press materials manufactured using the specific binders.

Abstract: The invention concerns a new polyol composition from isopropylidenediphenol-based polyethers, which are used in an advantageous manner for the production of polyurethane-polyisocyanurate (PUR-/PIR) rigid foams, as well as their production and use in PUR/PIR rigid foams.

Abstract: The invention concerns a new polyol composition from isopropylidenediphenol-based polyethers, which are used in an advantageous manner for the production of polyurethane-polyisocyanurate (PUR-/PIR) rigid foams, as well as their production and use in PUR/PIR rigid foams.

Abstract: The present invention relates to a process for producing a rigid polyurethane-polyisocyanurate foam C, comprising the step of reacting (i) an isocyanate-terminated prepolymer B with (ii) an activator component A comprising at least one trimerization catalyst A1 and at least one blowing agent A3 in a reaction mixture to form a foam, characterized in that—there is used an isocyanate-terminated prepolymer B obtained from a reaction of an isocyanate B1 having a mean isocyanate functionality of from ?2.3 to ?2.9 with a polyol component B2, and—the activator component A comprises water as the blowing agent A3 in an amount of from ?5 wt. % to ?50 wt. %,—the isocyanate index in the reaction mixture is in a range of from ?400 to ?500, and—the isocyanate content of the prepolymer B is in a range of from ?21 wt. % to ?30 wt. %, based on the total mass of the prepolymer B, and—wherein in the reaction of the prepolymer B and the activator component A a conversion contribution to polyisocyanurate of ?75% is achieved.

Abstract: The invention relates to a polyurethane-polyurea binder which contains specific silicones or polyvinyl pyrrolidones and which is suitable for the manufacture of press materials from organic and/or inorganic materials, to the corresponding use of said binders and to the press materials manufactured using the specific binders.

Abstract: The present invention relates to a process for producing a rigid polyurethane-polyisocyanurate foam C, comprising the step of reacting (i) an isocyanate-terminated prepolymer B with (ii) an activator component A comprising at least one trimerisation catalyst A1 and at least one blowing agent A3 in a reaction mixture to form a foam, characterised in that—there is used an isocyanate-terminated prepolymer B obtained from a reaction of an isocyanate B1 having a mean isocyanate functionality of from ?2.3 to ?2.9 with a polyol component B2, and—the activator component A comprises water as the blowing agent A3 in an amount of from ?5 wt. % to ?50 wt. %,—the isocyanate index in the reaction mixture is in a range of from ?400 to ?500, and—the isocyanate content of the prepolymer B is in a range of from ?21 wt. % to ?30 wt. %, based on the total mass of the prepolymer B, and—wherein in the reaction of the prepolymer B and the activator component A a conversion contribution to polyisocyanurate of ?75% is achieved.

Abstract: The invention relates to a method and to a pultrusion system (1) for producing a cord-shaped compound element (10) from a fiber bundle (11) and at least one filling component (12, 13), wherein the fiber bundle is guided into an injection box (14) having at least two supply channels (29) and an injection chamber (15), into which chamber die filling component (12, 13) is injected in a fluid state, such that the fiber bundle (11) is saturated with the filling component (12, 13) and whereby a material compound (16) is formed. According to the invention, energy is introduced in the injection chamber (15), such that the fiber bundle (11) is saturated with the filling component (12, 13) while energy is supplied.

Abstract: The invention relates to reinforced pultruded polyurethane and to a method for the production thereof by pultrusion.

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 polyurethane foams with incorporated phase change material, especially for reinforcing the back of deep-drawn films and components.

Abstract: A roof module for motor vehicles is disclosed having an exterior skin, a material layer adjacent thereto, a spacer layer, and a circumferential plastic material.

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.