Generating Foamed Plastic Patents (Class 422/133)
  • Patent number: 9884946
    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.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: February 6, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Rajiv R. Singh, Hang T. Pham, Ian Shankland
  • Patent number: 9233385
    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.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: January 12, 2016
    Assignee: Fomo Products, Inc.
    Inventors: Stefan Gantenbein, Thomas Fishback, Douglas Caffoe, Sara Jonas, John McQuaid
  • Patent number: 9132393
    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.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: September 15, 2015
    Inventor: Michael Ross
  • Patent number: 8777478
    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.
    Type: Grant
    Filed: November 27, 2008
    Date of Patent: July 15, 2014
    Assignee: Inoac Corporation
    Inventors: Haruo Morita, Norishige Kobayashi
  • Publication number: 20140163124
    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.
    Type: Application
    Filed: August 3, 2012
    Publication date: June 12, 2014
    Applicant: Mitsubishi Rayon Co., Ltd.
    Inventors: Masaki Kurashina, Toshinori Sumi, Yasuo Hiromoto, Hiroyuki Fujiki
  • Publication number: 20140107244
    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.
    Type: Application
    Filed: October 11, 2012
    Publication date: April 17, 2014
    Inventor: Douglas E. Reeves
  • Publication number: 20130299415
    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.
    Type: Application
    Filed: July 1, 2013
    Publication date: November 14, 2013
    Inventor: Wilmot H. McCutchen
  • Patent number: 8512642
    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.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: August 20, 2013
    Assignee: Toyo Tire & Rubber Co., Ltd.
    Inventor: Akihiro Fujio
  • Patent number: 8506889
    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.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: August 13, 2013
    Assignee: Dow Global Technologies LLC
    Inventors: Kenneth W. Skaggs, Bedri Erdem, Paul A. Gillis
  • Patent number: 8480290
    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.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: July 9, 2013
    Assignee: Afros S.p.A.
    Inventors: Carlo Fiorentini, Maurizio Corti
  • Patent number: 8475616
    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.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: July 2, 2013
    Assignee: McCutchen Co.
    Inventor: Wilmot H. McCutchen
  • Publication number: 20120300574
    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.
    Type: Application
    Filed: May 18, 2012
    Publication date: November 29, 2012
    Applicant: AFROS S.P.A.
    Inventors: Carlo Fiorentini, Maurizio Corti
  • Patent number: 8309677
    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.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: November 13, 2012
    Assignee: Eastman Chemical Company
    Inventors: Thomas Lloyd Yount, Larry Cate Windes, Bruce Roger DeBruin
  • Patent number: 8202485
    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.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: June 19, 2012
    Assignee: Ineos Manufacturing Belgium NV
    Inventor: Brent Walworth
  • Publication number: 20120104664
    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.
    Type: Application
    Filed: November 3, 2010
    Publication date: May 3, 2012
    Inventors: Waseem Rahim, Robert Sander, John Yanosik
  • Publication number: 20120013035
    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.
    Type: Application
    Filed: November 27, 2008
    Publication date: January 19, 2012
    Applicant: INOAC Corporation
    Inventors: Haruo Morita, Norishige Kobayashi
  • Publication number: 20110265270
    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.
    Type: Application
    Filed: April 28, 2011
    Publication date: November 3, 2011
    Applicant: Dreamwell, Ltd.
    Inventors: Michael S. DeFranks, Ronald M. Herrington
  • Patent number: 7855237
    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.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: December 21, 2010
    Assignee: Sulzer Chemtech AG
    Inventor: Philip Nising
  • Publication number: 20100307665
    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.
    Type: Application
    Filed: June 4, 2010
    Publication date: December 9, 2010
    Applicant: MCCUTCHEN CO.
    Inventor: Wilmot H. McCutchen
  • Patent number: 7837957
    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.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: November 23, 2010
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: Mark W. Baum
  • Publication number: 20100151225
    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.
    Type: Application
    Filed: December 23, 2008
    Publication date: June 17, 2010
    Inventor: Michael John Mabey
  • Patent number: 7713490
    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.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: May 11, 2010
    Assignee: Ineos Manufacturing Belgium NV
    Inventor: Brent Walworth
  • Patent number: 7709543
    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.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: May 4, 2010
    Assignee: Apache Products Company
    Inventor: Sammie J. (Joey) Glorioso
  • Patent number: 7683143
    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.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: March 23, 2010
    Assignee: Eastman Chemical Company
    Inventors: Thomas Llloyd Yount, Larry Cate Windes, Bruce Roger DeBruin
  • Publication number: 20100040509
    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.
    Type: Application
    Filed: October 20, 2009
    Publication date: February 18, 2010
    Inventor: Philip Nising
  • Patent number: 7614780
    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.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: November 10, 2009
    Assignee: Afros S.p.A.
    Inventor: Maurizio Corti
  • Patent number: 7585103
    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.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: September 8, 2009
    Assignee: KraussMaffei Technologies GmbH
    Inventor: Ernst Berchtenbreiter
  • Patent number: 7553066
    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.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: June 30, 2009
    Assignee: Afros S.p.A.
    Inventors: Carlo Fiorentini, Maurizio Corti
  • Publication number: 20090000546
    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.
    Type: Application
    Filed: June 27, 2008
    Publication date: January 1, 2009
    Inventors: Kenneth J. Rueschhoff, Joseph C. Lott
  • Patent number: 7467890
    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.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: December 23, 2008
    Assignee: Custom Ultrasonics, Inc.
    Inventor: Michael J. Patzek, IV
  • Patent number: 7455446
    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.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: November 25, 2008
    Assignee: Afros S.p.A.
    Inventors: Maurizio Corti, Piero Corradi, Carlo Fiorentini
  • Publication number: 20080249199
    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.
    Type: Application
    Filed: November 6, 2007
    Publication date: October 9, 2008
    Inventor: Philip Nising
  • Patent number: 7404916
    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.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: July 29, 2008
    Assignee: Hennecke GmbH
    Inventors: Michael Begemann, Klaus Sieben, Jürgen Wirth, Wolfgang Pawlik
  • Publication number: 20080114091
    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.
    Type: Application
    Filed: November 15, 2006
    Publication date: May 15, 2008
    Inventors: Nelson E. Malwitz, Natarajan S. Ramesh
  • Patent number: 7230037
    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.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: June 12, 2007
    Assignee: Hennecke GmbH
    Inventors: Hans-Michael Sulzbach, Reiner Raffel, Jürgen Wirth, Wolfgang Pawlik, Florian Thiebes, Lothar Röhrig
  • Patent number: 7192989
    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.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: March 20, 2007
    Assignee: Akzo Nobel N.V.
    Inventors: Lars-Olof Svedberg, Guy Hovland, Thomas Holmlund
  • Patent number: 7093972
    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.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: August 22, 2006
    Assignee: MHR, Inc.
    Inventors: Gordon W. Breuker, Mark D. Robinson
  • Patent number: 7074368
    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.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: July 11, 2006
    Assignee: Hyosung Corporation
    Inventors: Seoung-cheol Yang, Yang-kuk Son
  • Patent number: 6858682
    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
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: February 22, 2005
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: James A. Kendrick, Thomas W. Towles, Scott Thomas Roger
  • Patent number: 6809124
    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.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: October 26, 2004
    Assignee: Hennecke GmbH
    Inventors: Hans-Michael Sulzbach, Reiner Raffel, Martin Schamberg
  • Patent number: 6800698
    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
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: October 5, 2004
    Assignee: ExxonMobil Chemical Patents, Inc.
    Inventors: James Austin Kendrick, Thomas W. Towles, Scott Thomas Roger
  • Publication number: 20040186193
    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.
    Type: Application
    Filed: March 15, 2004
    Publication date: September 23, 2004
    Inventors: Martin Schamberg, Reiner Raffel, Jurgen Wirth
  • Patent number: 6726355
    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.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: April 27, 2004
    Assignee: Mirolin Industries Corporation
    Inventors: Alfredo Li Preti, Andrej Petricko
  • Patent number: 6689325
    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.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: February 10, 2004
    Assignees: Bayer Aktiengesellschaft, Hennecke GmbH
    Inventors: Ferdinand Althausen, Reiner Raffel, Wilfried Ebeling, Robert Eiben
  • Publication number: 20030185717
    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.
    Type: Application
    Filed: April 23, 1998
    Publication date: October 2, 2003
    Inventors: FERDINAND ALTHAUSEN, REINER RAFFEL, WILFRIED EBELING, ROBERT EIBEN
  • Patent number: 6616321
    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.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: September 9, 2003
    Assignee: Krauss-Maffei Kunststofftechnik GmbH
    Inventor: Stefan Ehrlicher
  • Publication number: 20030083444
    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.
    Type: Application
    Filed: December 5, 2002
    Publication date: May 1, 2003
    Inventors: Robert R. McElvain, John D. Stewart, Raymond G. Sewell, Robert W. Bohmer, Casey T. Collins, Ted Cymbaluk
  • Patent number: 6544481
    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.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: April 8, 2003
    Assignee: Hennecke GmbH
    Inventors: Hans-Michael Sulzbach, Reiner Raffel, Florian Thiebes
  • Publication number: 20030053369
    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.
    Type: Application
    Filed: September 25, 2002
    Publication date: March 20, 2003
    Applicant: KRAUSS-MAFFEI KUNSTSTOFFTECHNIK GMBH
    Inventor: Stefan Ehrlicher
  • Patent number: 6527431
    Abstract: A combined mixing and injecting device includes a housing having a pressure chamber and containing two plungers with one being sleeved around the other. The plungers have top ends formed with pistons which respectively extend into upper and lower chambers of the pressure chamber to be operated by a fluid, and bottom ends with tapering end faces extending into a bottom space below the lower chamber to perform a camming action. A mixer disposed below the housing includes a mixing chamber and valve units having valve stems respectively controlled by actuating elements which in turn are managed by the camming action of the plungers. The valve stems are connected to slide seats slidable along radial directions and spaced apart around the housing. The actuating elements actuate the slide seats so that the valve stems are operated to open or close inlet holes communicated with the mixing chamber.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: March 4, 2003
    Assignee: Taiwan Footwear Research Institute
    Inventors: Kelven Chen, Lin-Chih Huang