Patents Assigned to Ticona GmbH
  • Thermoplastic molding composition and its use for laser welding
    Patent number: 6759458
    Abstract: A black thermoplastic molding composition which containing a dye combination made from nonabsorbing, non-black polymer-soluble dyes which produce a black thermoplastic molding composition which is translucent or transparent to laser light.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: July 6, 2004
    Assignee: Ticona GmbH
    Inventor: Frank Reil
  • Process and means for reducing formaldehyde emission during the processing of thermoplastics with admixed polyacetal
    Patent number: 6753406
    Abstract: The present invention relates to a process for reducing formaldehyde emission from thermoplastics mixed with polyacetal, which comprises melting the thermoplastic mixture in the presence of at least one stabilizer in a mixing assembly and subjecting it to further processing steps. During this process, formaldehyde emission deriving from decomposition of the polyacetal is markedly reduced by adding suitable additives/stabilizers.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: June 22, 2004
    Assignee: Ticona GmbH
    Inventors: Stefan Wulf, Jens Schiebisch, Roger Knapp
  • Method and device for separating solids from polymer solutions
    Patent number: 6734282
    Abstract: The present invention relates to a process for separating a dissolved polymer from solids, wherein the solid is separated off by sedimentation and the sedimented solid is washed in countercurrent with a solvent. The present invention further relates to a process for preparing polymers in a solvent, wherein a) a polymer having a low molecular weight is prepared in solution, b) the solid which is undissolved in the reaction mixture is separated off by sedimentation and c) the mixture which has been freed of the solid is polymerized further until a particular molecular weight has been reached.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: May 11, 2004
    Assignee: Ticona GmbH
    Inventors: Reinhard Wagener, Michael Haubs
  • Thermal spray powder of oxidized polyarylene incorporating a particular high temperature polymer
    Patent number: 6682812
    Abstract: Powders of oxidized polyarylene sulfide and powders comprising from 1 to 99% by weight of oxidized polyarylene sulfide and from 1 to 99% by weight of a metal, carbide, ceramic or high temperature polyimide, polyamide imide, polyester imide and aromatic polyester plastic, or a mixture thereof are very suitable for use in thermal spraying and thereby form coatings having a strong chemical and mechanical resistance and high dimensional stability when exposed to high and low temperatures. Such coatings are advantageous for use as abradable seal clearance control coating in the compressor section of gas turbine engines, motor vehicle turbochargers and superchargers, and for use as a coating of reaction vessels, kitchen ware, sealings or bearings.
    Type: Grant
    Filed: January 2, 2002
    Date of Patent: January 27, 2004
    Assignee: Ticona GmbH
    Inventors: Dl. Helmut Scheckenbach, Christophr William Smith
  • Process for preparing trioxane, polyoxymethylene and polyoxymethylene copolymers
    Patent number: 6653487
    Abstract: A process for preparing trioxane by converting methanol to formaldehyde by dehydrogenation at a temperature of 300 to 1000° C., in the presence of a catalyst, wherein the catalyst is generated physically separately from the reactor and at a temperature above the dehydrogenation temperature, and trimerizing the formaldehyde prepared in this way to give trioxane. Also described is a process for preparing polyoxymethylene and polyoxymethylene copolymers from the formaldehyde.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: November 25, 2003
    Assignee: Ticona GmbH
    Inventors: Elke Schweers, Rolf Schulz, Thomas Kaiser, Uwe Dingerdissen
  • Thermoformable composite film and process to make
    Patent number: 6641925
    Abstract: The present invention relates to a thermoformable composite film, a process for producing a thermoformable composite film, the use of a solvent-free adhesive for applying a thermoplastic film to a film comprising cycloolefin copolymer in order to produce a thermoformable composite film, an extrusion coated film and a process for producing an extrusion coated film and use of the film as a packaging material.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: November 4, 2003
    Assignee: Ticona GmbH
    Inventors: Ekkehard Beer, Wilfried Hatke
  • Blends of cycloolefin and core/shell polymers
    Patent number: 6596810
    Abstract: Polymer alloy comprising a) one or more cycloolefin copolymers and b) one or more types of core/shell particles.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: July 22, 2003
    Assignees: Mitsu Petrochemical Ind., Ltd., Ticona GmbH
    Inventors: Wilfried Hatke, Frank Osan, Otto Herrmann-Schönherr, Vincent Joseph Sullivan, Thomas Weller
  • Fibers made of cycloolefin copolymers
    Patent number: 6593452
    Abstract: The present invention relates to a fiber which comprises at least one partly crystalline cycloolefin copolymer which can be prepared by polymerization of a symmetrical polycyclic olefin, an acyclic olefin and, if desired, a monocyclic olefin in the presence of a catalyst system comprising an aluminoxane and a metallocene compound of the formula
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: July 15, 2003
    Assignee: Ticona GmbH
    Inventors: Frank Osan, Michael-Joachim Brekner
  • Stress cracking-resistant cycloolefin copolymer composition
    Patent number: 6566475
    Abstract: The present invention relates to a polymer composition comprising one or more cycloolefin copolymers and one or more suitably formulated additives, having improved resistance to stress cracking in air or else in contact with media which give rise to stress cracking.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: May 20, 2003
    Assignee: Ticona GmbH
    Inventors: Alexandra Jacobs, Klaus Berger, Wilfried Hatke
  • Metalized polyolefin film
    Patent number: 6551653
    Abstract: This invention relates to a process for metalizing polyolefin film in which at least one outermost layer of the unmetalized polyolefin film has at least about 90% cycloolefin polymer that has not been subjected to a process for increasing surface tension before metalization. The metalized films are useful as dielectrics in capacitors.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: April 22, 2003
    Assignee: Ticona GmbH
    Inventors: Wilfried Hatke, Karl-Heinz Kochem, Theo Grosse Kreul
  • Method for producing sulfur-containing polymers
    Patent number: 6538102
    Abstract: The present invention relates to a process for preparing sulfur-containing polymers from at least one sulfide and from at least one aromatic dihalogen compound in at least one solvent, where a) a mixture made from a sulfide and from a solvent is prepared in a first reaction vessel, b) the sulfide and an aromatic dihalogen compound react in a second reaction vessel to form a sulfur-containing polymer, c) the pressure in the second reaction vessel is to some extent or completely released during the reaction, and the emanating vapor mixture is brought into contact with the mixture prepared in step (a).
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: March 25, 2003
    Assignee: Ticona GmbH
    Inventors: Michael Haubs, Reinhard Wagener, Markus Lehrl
  • Housing for electrical or electronic devices with integrated conductor tracks
    Patent number: 6521830
    Abstract: A housing for electrical or electronic devices or components comprises a molding (1) of thermoplastic material which has at selected locations on its surface electrical conductor tracks (5) with contact pins (3, 6) attached at predetermined locations, the conductor tracks (5) being covered with a layer (8) of thermoplastic material. A multi-layer molding is preferably concerned here, with conductor tracks being located between at least two layers and possibly also having applied to them electronic components, such as sensors, microswitches or surface-mounted devices, which are optionally encapsulated at the same time.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: February 18, 2003
    Assignee: Ticona GmbH
    Inventor: Reinhold G. Platz
  • Composite article from engineering thermoplastics and polyurethane elastomers, using an adhesion promoter
    Patent number: 6497782
    Abstract: A process for producing a composite article from at least one polar thermoplastic, in particular an engineering thermoplastic, and from at least one foamed or unfoamed polyurethane elastomer, where a molding is firstly molded from the thermoplastic, and some or all of this is provided with an adhesion promoter based on acrylic-resin lacquer or polyurethane-resin lacquer comprising solvents, and then a coating which may be in full-surface or strip form or at least one other molding made from the polyurethane elastomer is used for overmolding, and the thermoplastic material is thus bonded to the polyurethane material.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: December 24, 2002
    Assignee: Ticona GmbH
    Inventors: Di Reinhold Platz, Detlef Danilow, Alfred Link, Norbert Krämer, Klaus Langerbeins
  • Process and apparatus for preparing pure formaldehyde
    Publication number: 20020193639
    Abstract: A process and an apparatus for the post-purification in particular of pyrolysis gases for preparing pure formaldehyde, hemiformal being pyrolyzed in an evaporator, the resulting formaldehyde vapor being passed through a condensed liquid component collected in the bottom area of the evaporator, the condensed liquid component being passed out as a falling film situated on the inner wall through a cooled outlet tube disposed in the bottom area of the evaporator and the formaldehyde vapor being passed through the cooled outlet tube in cocurrent and the liquid component and the formaldehyde being taken off separately at the outlet tube end remote from the evaporator.
    Type: Application
    Filed: April 30, 2002
    Publication date: December 19, 2002
    Applicant: Ticona GmbH
    Inventors: Werner Sievers, Elke Schweers, Michael Rosenberg
  • Polyoxymethylene moldings having improved resistance to diesel fuel and aggressive gasoline
    Patent number: 6489388
    Abstract: It has been found that, in particular, a molding composition comprising (A) from 80 to 99.8% by weight of a polyoxymethylene homopolymer or copolymer, (B) from 0.1 to 10% by weight of a polyalkylene glycol and (C) from 0.1 to 10% by weight of a zinc oxide, where the sum of the percentages by weight of components (A) to (C) in each case gives 100%, is suitable for the production of moldings for applications with direct contact with diesel fuel or gasoline. Moldings produced therefrom satisfy the increased demands regarding resistance to aged fuels, diesel fuel at high long-term service temperatures and aggressive gasoline.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: December 3, 2002
    Assignee: Ticona GmbH
    Inventors: Klaus Kurz, Kurt Witan, Bernhard Forschler
  • Electrets
    Patent number: 6489033
    Abstract: Electrets can be produced from cycloolefin copolymers (COCs), and charges applied thereto are stable for long periods, even at high temperatures and high relative humidities. The reduction here in a positive charge applied to the COCs is smaller than that of negative charges applied to the COCs. The stability over time of the charges applied is impaired by adding polar additives, such as inorganic silicon compounds. Films, fibers or nonwovens produced from electrets can be processed to give filters.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: December 3, 2002
    Assignee: Ticona GmbH
    Inventors: Wilfried Hatke, Gerhard Sessler, Guo-Mao Yang
  • Colored long-fiber-reinforced polyolefin structure and shaped articles produced therefrom
    Patent number: 6482515
    Abstract: A colored long-fiber-reinforced polyolefin structure with a length ≧3 mm, which comprises from 0.1 to 90% by weight of at least one polyolefin, from 0.1 to 50% by weight of at least one polyamide, from 0.1 to 15% by weight of at least one modified polyolefin, from 5.0 to 75% by weight of at least one reinforcing fiber, and from 0.1 to 5.0% by weight of at least one dye and/or pigment. The present invention further relates to a process for producing a colored long-fiber-reinforced polyolefin structure, wherein fiber bundles are passed throught a flat die which has been charged with a melt made from polyolefin, polyamide, modified polyolefin and dye and/or pigment, the immersed fiber bundles are passed through a shaping die, the fiber bundles are cooled, and the fiber bundles are cut perpendicular to their running direction to give the length of the structure.
    Type: Grant
    Filed: October 26, 2000
    Date of Patent: November 19, 2002
    Assignee: Ticona GmbH
    Inventors: Heinz Berndt, Thomas Borgner, Joachim Heydweiller, Gabriele Thomas
  • Apparatus for the preparation of formaldehyde from methanol
    Patent number: 6472566
    Abstract: An apparatus for preparing formaldehyde from methanol by dehydrogenation in a reactor in the presence of a catalyst at a temperature in the range from 300 to 1000° C., a carrier gas stream which has a temperature above the dehydrogenation temperature is fed to the reactor.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: October 29, 2002
    Assignee: Ticona GmbH
    Inventors: Elke Schweers, Thomas Kaiser, Michael Haubs, Michael Rosenberg
  • Fibers made of cycloolefin copolymers
    Patent number: 6458919
    Abstract: The present invention relates to a fiber which comprises at least one partly crystalline cycloolefin copolymer which can be prepared by polymerization of a symmetrical polycyclic olefin, an acyclic olefin and, if desired, a monocyclic olefin in the presence of a catalyst system comprising an aluminoxane and a metallocene compound of the formula
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: October 1, 2002
    Assignee: Ticona GmbH
    Inventors: Frank Osan, Michael-Joachim Brekner
  • Process for the non-oxidative preparation of formaldehyde from methanol
    Publication number: 20020133029
    Abstract: In a process for preparing formaldehyde from methanol by dehydrogenation in a reactor in the presence of a catalyst at a temperature in the range from 300 to 1000° C., a carrier gas stream which has a temperature above the dehydrogenation temperature is fed to the reactor.
    Type: Application
    Filed: March 1, 2002
    Publication date: September 19, 2002
    Applicant: Ticona GmbH, a corporation of Germany
    Inventors: Elke Schweers, Thomas Kaiser, Michael Haubs, Michael Rosenberg