Abstract: A mixing machine (1) for the mixing of a homogeneous mixture with one or more components to obtain a viscous mixture, comprising a mixing chamber (2) which is divided in a push (A), a mixing (B) and a discharge zone (C), and wherein the mixing chamber (2) comprises the following parts: multiple walls, consisting of one or more top plates (22) with multiple inflow channels (10, 11, 12), one or more bottom plates (24) and multiple side walls (6); an outlet mouth (18); an outlet valve (13); several rotors (5); in and out sliding push and/or mixing blades (3, 4); and a self-cleaning system (16, 17); characterised in that the rotors (5) are integrated in the side walls (6) of the mixing chamber (2); the rotors are equipped with transit channels (30) for the in and out sliding push or mixing blades (3, 4); and the self-cleaning system comprises a cleaning plate (16) and a driving mechanism (17) wherein the cleaning plate (16) can move longitudinally through the mixing chamber (2).

Abstract: Disclosed are compositions useful in a wide variety of applications, including heat transfer fluids which possess a highly desirable and unexpectedly superior combination of properties, and heat transfer systems and methods based on these fluids. The preferred heat transfer fluid comprises from about 1 to about 40 percent, on a weight basis, of carbon dioxide (CO2) and from about 99 to about 60 percent, on a weight basis, of a compound having the Formula I XCFzR3-z (I), where X is a C2 or a C3 unsaturated, substituted or unsubstituted, alkyl radical, each R is independently Cl, F, Br, I or H, and z is 1 to 3. A preferred compound of Formula I is tetrafluoropropene, particularly 1,1,1,3-tetrafluoropropene and/or 1,1,1,3-tetrafluoropropene.

Abstract: The invention described herein generally pertains to temperature-indicating foam gun nozzles and/or at least one temperature-indicating hose which employs at least one thermochromic material disposed within said foam gun nozzle and/or hoses.

Abstract: A foam generator includes a body and a removable insert positioned within the body. The insert is held to the body by a cap releasably engaging a mating surface of the body. The body includes a plurality of inlets for foam constituents adjacent the mating surfaces of the body and an outlet for the foam opposite end. To change the insert, the can is disengaged from the mating surface without the need for tools and without disturbing the inlets. A new insert can be placed within the body and a cap of the new insert engaged with the mating surface without the need for tools.

Abstract: The present invention provides a low-cost and highly productive mixing head apparatus that achieves high agitation of a liquid blend and improves the smooth flow of the liquid blend from a discharge port, and a molding method using the same. In the mixing head apparatus wherein two types of chemically reactive fluid component materials 5 are expelled into a chamber interior 10 from fine holes respectively provided in side walls 11 of the chamber so that both component materials 5 impinge on and mix with each other, a plurality ranging from two to four of fine holes 30 are provided for at least one of both component materials 5, center axis lines 35 at distal ends of two or more of the two to four fine holes 30 intersecting with each other in the chamber interior 10, so that jets 50 of the component material expelled from the fine holes 30 with intersecting center axis lines impinge on each other in the chamber interior 10 prior to impingement with the other component material.

Abstract: A method of manufacturing a porous film includes a decomposition step of introducing a porous film precursor which is formed by coagulating an undiluted film forming solution containing a hydrophilic polymer and a hydrophobic polymer, into a decomposition container; bringing a heated chemical containing an oxidizing agent into contact with the porous film precursor in the decomposition container; warming the porous film precursor in contact with the chemical; and decomposing the hydrophilic polymer remaining inside the porous film precursor using the oxidizing agent. An apparatus for manufacturing a porous film includes a decomposition device provided with the decomposition container.

Abstract: A container is provided that may include a transparent portion that reveals an interior portion of the container, an access aperture communicating with the interior portion of the container, and a lid adjacent the access aperture. A first component is placed into the interior portion. A second component is poured into the interior portion. The lid of the container is closed to fully enclose the first and second components. The first and second components in the container are agitated until the first and second components are a mixture of uniform color, without an appearance of marbling and swirling, when viewed through the transparent portion of the container. The lid is opened to expose the mixture of uniform color. The mixture of uniform color is poured from the container into a receiving structure. The mixture of uniform color is transformed into a closed-cell polyurethane structure within the receiving structure.

Abstract: An RF inductor such as a Tesla antenna splices nanotube ends together to form a nanostructure in a polymer foam matrix. High Internal Phase Emulsion (HIPE) is gently sheared and stretched in a reactor comprising opposed coaxial counter-rotating impellers, which parallel-align polymer chains and also carbon nanotubes mixed with the oil phase. Stretching and forced convection prevent the auto-acceleration effect. Batch and continuous processes are disclosed. In the batch process, a fractal radial array of coherent vortices in the HIPE is preserved when the HIPE polymerizes, and helical nanostructures around these vortices are spliced by microhammering into longer helices. A disk radial filter produced by the batch process has improved radial flux from edge to center due to its area-preserving radial vascular network. In the continuous process, strips of HIPE are pulled from the periphery of the reactor continuously and post-treated by an RF inductor to produce cured conductive foam.

Abstract: Provided is an apparatus for producing hard polyurethane foam by a froth process having a foaming agent supply means that quantitatively supplies the inert gas as a foaming agent and a foaming means that discharges a hard polyurethane foam obtained by forming a foaming polyol composition, in which the foaming agent supply means has a pressure-reducing valve that reduces and adjusts the pressure of the inert gas and a needle valve that adjusts the flow rate of the inert gas, the foaming means has a compression cylinder for compressing and supplying the polyol composition, a regulation means that regulates the supply of the inert gas to the foaming means is provided between the foaming means and the foaming agent supply means, and a control means that controls the regulation means by sensing the operation of the compression cylinder is connected to the regulation means.

Abstract: The instant invention is a device for producing dispersions. The device for producing dispersions includes a first stator, a second stator, a shell encasing the first stator and the second stator, a rotor being disposed therebetween the first stator and the second stator thereby forming a first chamber and a second chamber, at least one first inlet port into the first chamber, and at least one outlet port out of the second chamber. The device may optionally include at least one additional second inlet port into the second chamber.

Abstract: A high-pressure mixing apparatus for producing and discharging a composite material resulting from a reactive mixture of at least a first and a second chemical components and from a filler material. The apparatus includes a main body, provided with a discharge duct for the composite material, at least one high-pressure mixing chamber for the chemical components and a first cleaning member axially displaceable between a forward and a rearward position within the discharge duct. The apparatus also comprises a second cleaning member with a control device selectively actuable to sequentially move the first and the second cleaning member between the rearward position, in which the first cleaning member opens the discharge duct, and the forward position in which the facing annular surfaces of the discharge duct and the second cleaning member are mutually abutting to eject the residual reactive mixture and close the exit port of the mixing chamber.

Abstract: An RF inductor such as a Tesla antenna splices nanotube ends together to form a nanostructure in a polymer foam matrix. High Internal Phase Emulsion (HIPE) is gently sheared and stretched in a reactor comprising opposed coaxial counter-rotating impellers, which parallel-align polymer chains and also carbon nanotubes mixed with the oil phase. Stretching and forced convection prevent the auto-acceleration effect. Batch and continuous processes are disclosed. In the batch process, a fractal radial array of coherent vortices in the HIPE is preserved when the HIPE polymerizes, and helical nanostructures around these vortices are spliced by microhammering into longer helices. A disk radial filter produced by the batch process has improved radial flux from edge to center due to its area-preserving radial vascular network. In the continuous process, strips of HIPE are pulled from the periphery of the reactor continuously and post-treated by an RF inductor to produce cured conductive foam.

Abstract: A high-pressure mixing apparatus suitable for producing a composite material from a reactive mixture of at least a first and a second chemical components and from a filler material, including a main body conformed with a discharge duct for the composite material, a high-pressure mixing chamber for the chemical components, and a first cleaning member axially displaceable between a forward position and a rearward position within the discharge duct.

Abstract: A system for processing large quantities of a reaction medium while maintaining the reaction medium in sheets. The system includes a reactor having a plurality of vertically-spaced downwardly-sloped trays over which the reaction medium flows while it is subjected to reaction conditions. The slope of the trays increases downwardly to accommodate for the increased viscosity of the reaction medium while the reaction medium flows downwardly through the reactor. An upper portion of the trays have a uni-directional configuration, while a lower portion of the trays have a bi-directional configuration. Further, the orientation of flow across the uni-directional trays is rotated by 90 degrees in at least one location as the reaction medium flows down the uni-directional trays.

Abstract: Process for providing a flow of particulate matter to a reactor, by intermittently adding the particulate matter and a diluent to a mixing tank, and continuously withdrawing a slurry of particulate matter in diluent from the mixing tank for introduction into the reactor. Prior to each addition of particulate matter and diluent to the mixing tank, the concentration of particulate matter in the diluent already in the mixing tank is measured or calculated, and the amount of particulate matter and diluent subsequently added is measured so as to achieve the same concentration at the end of the addition as that measured or calculated prior to the addition.

Abstract: This disclosure relates to pelletized polyolefin resins. More particularly, the disclosure relates to a process that allows for adjustment of certain desired properties of either the resin, such as modification of the bulk density of resin pellets, or adjustment of properties for the articles made from the resin, such as improved odor and taste properties, when used as a bottle cap, for example, or tailoring of the resin volatile or wax level, when used to make pipe, for example. This disclosure also relates to a system for making pelletized resins, such as mono-modal or multi-modal olefin polymer resins.

Abstract: The present invention provides a low-cost and highly productive mixing head apparatus that achieves high agitation of a liquid blend and improves the smooth flow of the liquid blend from a discharge port, and a molding method using the same. In the mixing head apparatus wherein two types of chemically reactive fluid component materials 5 are expelled into a chamber interior 10 from fine holes respectively provided in side walls 11 of the chamber so that both component materials 5 impinge on and mix with each other, a plurality ranging from two to four of fine holes 30 are provided for at least one of both component materials 5, center axis lines 35 at distal ends of two or more of the two to four fine holes 30 intersecting with each other in the chamber interior 10, so that jets 50 of the component material expelled from the fine holes 30 with intersecting center axis lines impinge on each other in the chamber interior 10 prior to impingement with the other component material.

Abstract: The systems and methods described herein relate to providing mattresses with foam that is odor-free. Unpleasant odors can be reduced in foam members by including a source of cyclodextrin during the manufacture of foam. Instead of masking odors with fragrances, the systems and methods described herein reduce odors with the aid of, among other things, a cyclodextrin-water solution. In one aspect, a method of manufacturing an odor-free foam for use in a mattress is provided. The method includes solubilizing cyclodextrin in water to form a cyclodextrin solution, and adding the cyclodextrin solution to a reacting mixture of a polyol and a isocyanate to form an odor-free or reduced-odor foam.

Abstract: The method for the manufacture of foamed or foamable polymer particles employs a mixture of a polymer melt and a recycled polymer melt produced from recycled, propellant-containing polymer particles. The associated plant for the manufacture of the foamed or foamable polymer particles is provided with an apparatus for the processing of recycled, propellant-containing polymer particles.

Abstract: An RF inductor such as a Tesla antenna splices nanotube ends together to form a nanostructure in a polymer foam matrix. High Internal Phase Emulsion (HIPE) is gently sheared and stretched in a reactor comprising opposed coaxial counter-rotating impellers, which parallel-align polymer chains and also carbon nanotubes mixed with the oil phase. Stretching and forced convection prevent the auto-acceleration effect. Batch and continuous processes are disclosed. In the batch process, a fractal radial array of coherent vortices in the HIPE is preserved when the HIPE polymerizes, and helical nanostructures around these vortices are spliced by microhammering into longer helices. A disk radial filter produced by the batch process has improved radial flux from edge to center due to its area-preserving radial vascular network. In the continuous process, strips of HIPE are pulled from the periphery of the reactor continuously and post-treated by an RF inductor to produce cured conductive foam.

Abstract: A system and device for preparing polyurea compounds. The system comprising a chamber for reacting amines and isocyanates in the presence of a liquid diluent in a high-pressure impingement mixing device under conditions sufficient to produce a polyurea compound having the consistency of a powder and in which diluent is dispersed.

Abstract: Thermal barrier synthetic polymer composite embraces a synthetic polymer matrix made from reaction of a mixture of at least an isocyanate and an active hydrogen-containing compound, in intimate admixture and combination with at least one water-releasing mineral additive. Thermal barrier, fire resistance, fire retardant, and smoke reducing properties are provided by the composite.

Abstract: A process is disclosed for providing a flow of particulate matter such as a catalyst to a reactor, comprising intermittently adding said particulate matter and a diluent to a mixing tank, and continuously withdrawing a slurry of particulate matter in diluent from the mixing tank for introduction into the reactor, wherein prior to each addition of particulate matter and diluent to the mixing tank, the concentration of particulate matter in the diluent already in the mixing tank is measured or calculated, and the amount of particulate matter and diluent subsequently added is measured so as to achieve the same concentration at the end of the addition as that measured or calculated prior to the addition. Preferably measurement of the amount of particulate mailer and diluent added to the mixing tank is carried out before any diluent is added to the particulate matter.

Abstract: A system and a method of providing PUR/PIR foam using flammable blowing agent. The flammable blowing agent is introduced to PUR/PIR manufacturing equipment via an independent feed-line. This enables a flammable blowing agent storage vessel to be located off site from the foam manufacturing equipment. The independent flammable blowing agent feed-line couples the off-site flammable blowing agent storage vessel with the foam production system. The preferred flammable blowing agent is pentane.

Abstract: A system for processing large quantities of a reaction medium while maintaining the reaction medium in sheets. The system includes a reactor having a plurality of vertically-spaced downwardly-sloped trays over which the reaction medium flows while it is subjected to reaction conditions. The slope of the trays increases downwardly to accommodate for the increased viscosity of the reaction medium while the reaction medium flows downwardly through the reactor. An upper portion of the trays have a uni-directional configuration, while a lower portion of the trays have a bi-directional configuration. Further, the orientation of flow across the uni-directional trays is rotated by 90 degrees in at least one location as the reaction medium flows down the uni-directional trays.

Abstract: The method for the manufacture of foamed or foamable polymer particles employs a mixture of a polymer melt and a recycled polymer melt produced from recycled, propellant-containing polymer particles. The associated plant for the manufacture of the foamed or foamable polymer particles is provided with an apparatus for the processing of recycled, propellant-containing polymer particles.

Abstract: A method and an apparatus for high-pressure mixing of reactive chemical components. The chemical components are fed into a mixing chamber, by respective injectors at least one of which comprises a nozzle and a plug member for controlling the pressure drop; the nozzle and/or the plug member are shaped to form a lobed outlet orifice having an adjustable outlet cross section and a plurality of radially extending lobed formations, to create a vortical or swirling and highly turbulent state in the fluid jet. The surfaces in contact with the fluid of the nozzle and/or of the plug member can either be smooth or have sharp edges which contribute to increase the turbulence and swirling state of the fluid jet; a highly effective mixing degree is thereby achieved in the manufacture of polyurethane resins, bi-component resins and molded articles.

Abstract: A mixing head includes a mixing device which is secured to a housing and has a mixing chamber for mixing at least two plastic components to form a material mixture. Received in a recess of the housing is a cleaning device which has a cleaning piston for back-and-forth movement in relation to the mixing chamber between a first position in which the cleaning piston is retracted from the mixing chamber and a second position in which the cleaning piston extends into the mixing chamber. The cleaning device has a barrier which interacts with a housing wall for pushing the material mixture radially outside. The barrier has a flank which has an incline which is steeper than an incline of the housing wall.

Abstract: The high-pressure mixing apparatus, for reactive chemical components, comprises a device for self-lubricating and scraping the outlet duct of the chemical mixture, and flushing out the scraped residues. The self-lubricating and scraping device comprises a delivery chamber for the lubricant material axially aligned and in fluid communication with the outlet duct; the lubricant delivery chamber is connected to a storage tank by a feeding and re-circulation circuit. The lubricant is sucked into the outlet duct and subsequently returned into the delivery chamber by a cleaning member in the form of a pumping piston sliding into the outlet duct, the pumping piston being provided with scraping rings for removing the reacted mixture adhered to the inner surface of the outlet duct.

Abstract: A method of dispensing polyurethane foam from DOT-39 compliant tank, the method includes providing DOT-39 compliant tanks of each of the components of the polyurethane foam, each tank having at least two valves. At least one valve of each of the DOT-39 compliant tanks is connected to a source of pressure. At least one valve of each of the DOT-39 compliant tanks is connected to a dispenser to mix the components and dispense the foam under pressure.

Abstract: A portable disinfectant transfer system for transferring a toxic and/or noxious fluid between a container and a reprocessor reservoir includes a container for containing the fluid, a pump having a conduit for drawing the fluid from the reservoir and expelling the fluid through an opening of the conduit into the container and an opening in the container for receiving a neutralizing chemical into the container simultaneously with the expelling of the fluid from the reservoir into the container to provide a simultaneously introduced neutralizing chemical. The opening of the conduit is positioned to produce a swirling motion of the fluid within the container to mix the simultaneously introduced neutralizing chemical with the fluid while the fluid is expelled into the container. A further pump having a further conduit is provided for drawing the fluid out of the container.

Abstract: A method and device (10) for mixing polyurethane-forming liquid chemical components for the production of polyurethane foams, in which positive use is made of the turbulency and swirling action caused by the injection of pressurized jets of chemical components, in order to provide a methodology tending to improve the mixing processes by impingement and by the turbulency induced by a pressure drop in conventional self-cleaning apparatuses.

Abstract: The method for the manufacture of foamed or foamable polymer particles employs a mixture of a polymer melt and a recycled polymer melt produced from recycled, propellant-containing polymer particles. The associated plant for the manufacture of the foamed or foamable polymer particles is provided with an apparatus for the processing of recycled, propellant-containing polymer particles.

Abstract: Cellular or compact polyurethane moldings are produced by conveying at least one isocyanate component and at least one polyol component by a metering machine in dispensing manner into a mixing chamber via component lines to form a polyurethane reaction mixture. Subsequently, the polyurethane reaction mixture is discharged from the mixing chamber into a mold. The pressures of the components are registered by means of pressure transducers in the component lines and are transmitted to a monitoring device. The temporal profiles of the pressures are compared with reference pressure values stored in the monitoring device. A malfunction is signalled in the event of deviation of at least one of the measured pressure profiles from the reference pressure profile beyond a predetermined tolerance threshold.

Abstract: The present invention provides a method for producing a UV induced crosslinked foam in which a melt stream comprising a thermoplastic polymer, a UV crosslinking agent and a photoinitiator is crosslinked by exposing the melt stream to a source of UV light source prior to extruding the melt through an extrusion die. Exposing the melt stream to UV light causes the photoinitiator to become excited and react with the crosslinking agent to generate a free radical. The thus generated free radical reacts with the thermoplastic polymer to induce crosslinking in the polymer. Crosslinking of the polymer can be done prior to extrusion so that the crosslinking process can be carried out without additional steps and/or without the aid of chemical crosslinking agents. The invention also provides an apparatus for producing a crosslinked foam in which the apparatus includes a UV chamber disposed between the extruder and the die through which UV light can be introduced into the melt stream.

Abstract: The present invention relates to a method for the continuous mixing of at least one polyol component and at least one isocyanate component and optionally additives to form a polyurethane reaction mixture in a stirrer mixer with an axially conveying stirrer.

Abstract: The present invention relates to a method of preparing expanded thermoplastic microspheres, comprising charging thermally expandable microspheres into an expansion device comprising rotating feeding means enveloped by a hollow body, and one or more scrapers. The invention further relates to an expansion device for expanding thermoplastic microspheres.

Abstract: A mixing head assembly comprising a housing having an input mix chamber passageway and a non-perpendicular output passageway. The assembly also includes a first input including a first nozzle for injecting a first fluid into the input mix chamber passageway and a second nozzle for injecting a second fluid into the input mix chamber passageway whereby the second fluid can mix with the first fluid to form a mixed fluid. The first nozzle and the second nozzle are configured to inject the first fluid and the second fluid into the input mix chamber passageway such that the first fluid and the second fluid meet at an intersection point. The first axial line and the second axial line are neither co-linear nor co-planar. Furthermore, an intersection point of the first fluid and the second fluid is not located along a longitudinal axis of the input mix chamber passageway.

Abstract: A batch-type polyester polymerization apparatus manufactured by assembling a conventional batch-type apparatus with a thin film tower. The batch-type polyester polymerization apparatus is advantageous in that oligomer is polymerized while forming a polyester thin film on each inclined plate of a thin film tower, and a polycondensation reaction is conducted in a polycondensation reactor as well as the thin film tower, thus greatly reducing polymerization time.

Abstract: A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (l) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of said first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to t

Abstract: The invention relates to a method for the production of polyurethane block foam, wherein a polyurethane reactive mixture containing carbon dioxide is suddenly relieved from a pressure above the pressure breaking the equilibrium of the carbon dioxide to a normal pressure, wherein the liquid polyurethane reactive mixture is foamed by releasing dissolved carbon dioxide.

Abstract: A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (l) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of the first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to th

Abstract: Polyurethane foams are continuously produced using CO2 as the blowing agent and a filler. The filler is mixed with at least a portion of one of the reactive components and any agglomerates are virtually completely broken up during or subsequent to such mixing. The filler-containing mixture is passed through at least one filter element to filter out any oversize grains, residual agglomerates and/or impurities. The CO2 is added under pressure to at least a portion of at least one of the reactive components to generate a mixture which comprises liquid CO2 or a mixture which comprises liquid CO2 and filler. This mixture is mixed with the other reactive component(s) and optionally further additives. The reactive mixture which includes CO2 and filler is then decompressed by division into a plurality of individual streams at shear velocities above 500 s-1 and the flow velocities thus generated are reduced before discharge.

Abstract: A mix head assembly including a mix chamber having a mixer rotatably mounted therein. The mixer extends for a longitudinal length and defines a multiple of vanes which agitate the fluid material components as the mixer is rotated. A plunger is movably mounted in the mix chamber relative to the mixer. As the plunger is driven relative the mixer, the plunger scrapes the fluid material off the mixer such that no remnants remain within the mix chamber.

Abstract: A process is described for producing foam materials from two-component reactive plastics using carbon dioxide as blowing agent by mixing at least one of the reactive components with carbon dioxide under pressure, mixing the components, at least one of which contains carbon dioxide under pressure, expanding the reactive mixture containing carbon dioxide obtained by mixing, and hardening, wherein the expansion takes place suddenly with the production of high rates of shear. Preferably the rate of flow of the reaction mixture is reduced after expansion.

Abstract: A process is described for producing foam materials from two-component reactive plastics using carbon dioxide as blowing agent by mixing at least one of the reactive components with carbon dioxide under pressure, mixing the components, at least one of which contains carbon dioxide under pressure, expanding the reactive mixture containing carbon dioxide obtained by mixing, and hardening, wherein the expansion takes place suddenly with the production of high rates of shear. Preferably the rate of flow of the reaction mixture is reduced after expansion.

Abstract: A deflector-mixing head for a reaction molding machine, comprises a mixing chamber with a control piston for regulation of component inflow, an overflow chamber is arranged downstream from the mixing chamber in a perpendicular position thereto and provided with a cleaning piston which controls the opening and closing of the mixing chamber side of the inlet of the overflow chamber, wherein an improved mixing quality is obtained by arranging a connection chamber substantially parallel to the axis of the overflow chamber, between the mixing and overflow chambers and provided with deflector elements positioned in the flow path between the inlet and the outlet side of the connecting chamber, and by arranging a displacement piston parallel to the cleaning piston for emptying the connection chamber.

Abstract: Apparatus for removing a concentrated slurry from a flowing stream of slurry in a conduit characterized by a channel in an outlet area of the conduit, the outlet being adapted to continuously remove slurry. In a specific embodiment, an olefin polymerization apparatus is disclosed wherein monomer, diluent and catalyst are circulated in a continuous pipe loop reactor and product slurry is recovered by a continuous product take off means. The pipe has a channel or groove leading to the continuous product take off means. In one embodiment, the slurry is heated in a flash line heater and passed to a high pressure flash where a majority of the diluent is separated and thereafter condensed by simple heat exchange, without compression, and thereafter recycled, bottoms from the high pressure flash being passed to a low pressure flash where polymer is recovered and entrained liquid is flashed overhead. In another embodiment the flash line feeds a single flash chamber.

Abstract: Reaction mixtures which form polyurethane foamed material, with production conditions which are varied during production, e.g. variation of the proportion of foaming agent, variation of the ratio of reaction components, variation of the throughput, or fine adjustment, can be produced by employing an improved apparatus which comprises a depressurisation element (creamer) (10), wherein a perforated plate or sieve plate constructed as a first throttle plate (24), and a second perforated or sieve plate, which is constructed as a throttle plate (26, 27, 28) and which is disposed downstream thereof, are disposed in the creamer (10), wherein the spacing a between these two throttle plates (24, 26) can be varied during operation in accordance with the variable production conditions, and wherein a calming element (29) is disposed after the second throttle plate (26) in the direction of flow.

Abstract: A deflector-mixing head for a reaction molding machine, comprises a mixing chamber with a control piston for regulation of component inflow, an overflow chamber is arranged downstream from the mixing chamber in a perpendicular position thereto and provided with a cleaning piston which controls the opening and closing of the mixing chamber side of the inlet of the overflow chamber, wherein an improved mixing quality is obtained by arranging a connection chamber substantially parallel to the axis of the overflow chamber, between the mixing and overflow chambers and provided with deflector elements positioned in the flow path between the inlet and the outlet side of the connecting chamber, and by arranging a displacement piston parallel to the cleaning piston for emptying the connection chamber.