Abstract: The present invention relates to a method for producing flexible polyurethane foams, wherein an isocyanate component (component B) is used which comprises polyether carbonate polyol, and to the isocyanate component itself. The invention also provides an NCO-terminated, urethane group-comprising prepolymer obtainable by reaction of one or more polyisocyanates (B1) with one or more polyether carbonate polyols.

Abstract: The invention relates to a method for producing flexible moulded polyurethane foams (flexible moulded PU foams) with horizontally disposed zones of different hardness, the method being implemented in such a way that at least two fluid reaction mixtures, forming foams with different hardnesses, are introduced in succession in horizontal disposition, in layer form, into the moulding cavity, with at least one fluid reaction mixture being freely foamed, before at least one further foam-forming fluid reaction mixture is introduced into the moulding cavity.

Abstract: The present invention relates to a process for the production of flexible polyurethane foams, wherein there is used as starting material a polyester polyol component which is composed of at least two dicarboxylic acids.

Abstract: A device for molding by impregnation of at least one reinforcing layer constituting a piece to be molded or at least one reinforcing layer covering a piece, with a resin in liquid form. The device includes a mold extending around the reinforcing layer by defining a resin circulation space, an end piece for supplying resin in the circulation space, an end piece for evacuating the surplus resin as well as elements for generating a flow of resin in the circulation space. The mold includes a flexible conduit and elements for mechanically deforming the flexible conduit to shape the circulation space according to the impregnation parameters.

Abstract: A method having the following steps: feeding a plastic material in the area of an inner surface of the mold, conforming the material to the inner surface of the mold, feeding a tubular film into the mold so that the material is positioned between an outer surface of the tubular film and the mold, expanding the tubular film using pressure and/or a vacuum, applying a pressure above atmospheric pressure and/or heating the mold so that the material is partly or completely melted and is adapted to conform to an inner contour of the mold and an outer contour of the expanded tubular film. The tubular film is shaped before it is fed into the mold. The invention further relates to a tubular film (1) and a method for manufacturing the same.

Abstract: The present invention provides a method for producing flame-retardant polyurethane foams, the resulting flame-retardant polyurethane foams having particularly low densities.

Abstract: The present invention relates to a method for producing flexible polyurethane foams, wherein an isocyanate component (component B) is used which comprises polyether carbonate polyol, and to the isocyanate component itself. The invention also provides an NCO-terminated, urethane group-comprising prepolymer obtainable by reaction of one or more polyisocyanates (B1) with one or more polyether carbonate polyols.

Abstract: A process for the preparation of polyricinoleic acid esters comprising the step of reaction of ricinoleic acid with an alcohol component which comprises mono- and/or polyfunctional alcohols having a molecular weight of ?32 g/mol to ?40 g/mol, wherein the reaction is carried out at least partly in the presence of a catalyst. The amount of catalyst, based on the total weight of the ricinoleic acid and the alcohol component, is in a range of from ?10 ppm to ?100 ppm. The reaction is ended when the acid number of the reaction product obtained is ?5 mg of KOH/g to ?100 mg of KOH/g. The invention furthermore relates to a polyurethane polymer, in particular a flexible polyurethane foam, which is obtainable using these polyricinoleic acid esters.

Abstract: A viscoelastic foam is produced by reacting (a) an isocyanate component that includes at least 25% by weight of diphenylmethane diisocyanate having a monomeric content of from 50 to 90% by weight, (b) an isocyanate-reactive component, (c) at least one catalyst, (d) at least one surface active agent, and (e) liquid carbon dioxide. These foams are characterized by a ball rebound of less than 20%. Particularly preferred foams are characterized by a 95% height recovery time greater than 4 seconds.

Abstract: Some embodiments provide a portable device for modifying operating parameter values and/or firmware of electronic control apparatuses of motor vehicles including storage means, processor means connected to the storage means and adapted to read out firmware components and/or operating parameter values from the storage means, and interface means connected to the processor means and adapted to be releasably connected to the communication terminal of the communication bus. The processor means comprises translation means, by means of which the processor means is able to transmit, receive and interpret data, and is adapted to automatically establish a communication connection, to carry out a survey of the control apparatuses as well as of the communication protocols used by them, and to transmit, for each recognized control apparatus, for which firmware components and/or operating parameter values are stored in the storage means, programming commands and data.

Abstract: The present invention relates to a method for producing flexible polyurethane foams, wherein an isocyanate component (component B) which comprises fatty acid derivatives comprising hydroxyl groups is used as starting substance. The flexible polyurethane foams according to the invention have a bulk density according to DIN EN ISO 3386-1-98 in the range of ?10 kg/m3 to ?150 kg/m3, preferably ?20 kg/m3 to ?70 kg/m3, and in general their compressive strength according to DIN EN ISO 3386-1-98 is in the range of ?0.5 kPa to ?20 kPa (at 40% deformation and 4th cycle). The invention also provides an NCO-terminated prepolymer comprising urethane groups obtainable by reaction of one or more polyisocyanates (B1) with one or more fatty acid derivatives comprising hydroxyl groups (B2).

Abstract: Internal combustion engine optimisation in which individual adjustment processes to be carried out to achieve optimal cooperation between the sensors, actuators, control device and internal combustion engine are started and carried out on the basis of the quality achieved for each of the individual adjustment processes in relation to one another, the ambient conditions of the internal combustion engine and the system states of the internal combustion engine in connection with a control program.

Abstract: The present invention relates to a method for producing flexible polyurethane foams, wherein a polyol component which comprises polyricinoleic acid esters is used as starting substance. The flexible polyurethane foams according to the invention have a bulk density according to DIN EN ISO 3386-1-98 in the range of ?10 kg/m3 to ?150 kg/m3, preferably ?20 kg/m3 to ?70 kg/m3, and in general their compressive strength according to DIN EN ISO 3386-1-98 is in the range of ?0.5 kPa to ?20 kPa (at 40% deformation and 4th cycle). The polyricinoleic acid esters are obtainable by the reaction of ricinoleic acid with an alcohol component which comprises mono- and/or polyhydric alcohols with a molecular mass of ?32 g/mol to ?400 g/mol, the reaction being carried out at least in part in the presence of a catalyst.

Abstract: The invention relates to a highly flexible sheet composite material comprising a block flexible foam and a layer of whipped foam made of polyurethane-based dispersions two-dimensionally bonded thereto, a process for preparing such a composite material, and the use thereof.

Abstract: The invention relates to a polyether polyol composition for the preparation of polyurethane foams, comprising: (a) a polyether polyol having a hydroxyl functionality of 2, an OH number within a range of from 50 to 65 mg of KOH/g and a proportion of primary hydroxyl groups within a range of from 40 to 80%, based on the total number of primary and secondary hydroxyl groups, having a PO content of from 45 to 55% by weight and an EO content of from 40 to 55% by weight; (b) a dispersion of a polymer in a polyether polyol, wherein the OH number of the dispersion is within a range of from 10 to 30 mg of KOH/g and the polyether polyol has a hydroxyl functionality of 3, a proportion of primary hydroxyl groups within a range of from 70 to 90%, based on the total number of primary and secondary hydroxyl groups, a PO content of from 70 to 90% by weight and an EO content of from 10 to 30% by weight; (c) a polyether polyol having a hydroxyl functionality of 3, an OH number within a range of from 220 to 290 mg of KOH/g a

Abstract: A manual press device for connecting two work pieces by means of embossing, comprising a press tool, a converting device, and an electric motor. The electric motor is designed as a brushless electric motor, and preferably connected directly to a hydraulic pump without interconnecting a transmission.

Abstract: The present invention relates to a process for the production of polyurethane foams from A1 compounds containing isocyanate-reactive hydrogen atoms and having a molecular weight of from 400 to 15,000, A2 optionally compounds containing isocyanate-reactive hydrogen atoms and having a molecular weight of from 62 to 399, A3 water and/or physical foaming agents, A4 optionally auxiliary substances and additives, A5 compounds having at least one semicarbazide group, and B di- or poly-isocyanates which yields polyurethane foams with reduced formaldehyde emission and wherein the activity of the raw material mixture is not substantially affected and wherein the mechanical properties of the resulting foam (in particular compression set and ageing behaviour under humid conditions) are not adversely affected.

Abstract: The present invention relates to polyether polyol compositions containing renewable raw materials, a process for preparing visco-elastic polyurethane foams using such compositions, correspondingly prepared visco-elastic foam materials, and the use thereof.

Abstract: The subject-matter of the present invention relates to a process for the production of flame-retardant polyurethane foams, preferably for the production of flame-retardant flexible polyurethane foams, from A1 a filler-containing polyether polyol (component A1.1), wherein the filler is a reaction product of a di- or poly-isocyanate with a compound containing isocyanate-reactive hydrogen atoms, and optionally further compounds containing isocyanate-reactive hydrogen atoms and having a molecular weight of from 400 to 18,000 (component A1.

Abstract: A method for producing a multicomponent compound involves pressing components out of cartridges by means of pistons. The method has particular applicability in connection with dental applications. The method prevents pressing the components initially under high pressures. At the beginning of the pressing-out process, a pressure lower than the characteristic pressing-out pressure of the components from the cartridges is employed. Feed speeds are adjusted to constant value as a function of the pressing-out behavior of the components which are compared with stored or calculated values for a known material.