Patents by Inventor Albert J. H. Brasz

Albert J. H. Brasz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Device and process for recovering polymer from a solution
    Patent number: 4686279
    Abstract: The invention relates to a device and a process for recovering polymer from a melt or solution containing volatile components. The device consists of an evaporating zone passing, via a metering device, which can function also as a pressure-reducing device, into a devolatilizing extruder. The metering and pressure-reducing device makes it possible also to process highly viscous melts of high-molecular polymers and to fill the extruder screws incompletely so that substantial devolatilization is realized in the extruder.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: August 11, 1987
    Assignee: Stamicarbon B.V.
    Inventors: Nicolaas P. Nagtzaam, Cornelis Bronke, Albert J. H. Brasz
  • Process for the preparation of polymer melts which are substantially free of volatile components
    Patent number: 4452977
    Abstract: A process for the preparation of alkene polymer melts being substantially free of volatile components comprises introducing an alkene polymer melt having a melt index of less than 4 dg/min and a content of volatile components of less than 10 percent by weight into a cooled degasification extruder and subjecting the melt in the extruder kneading zone to intense cooling under pressure and in the extruder degasification zone to cooling which is less intense than in the kneading zone and under reduced pressure.
    Type: Grant
    Filed: June 8, 1982
    Date of Patent: June 5, 1984
    Assignee: Stamicarbon B.V.
    Inventors: Albert J. H. Brasz, Nicolaas P. Nagtzaam, Cornelis Bronke
  • Process of making products consisting of foamed and/or cross-linked synthetic polymers
    Patent number: 4409164
    Abstract: A process is described for improving the rate of production, other conditions being equal, of extruded polymer products, containing foaming- and/or cross-linking agents, which particularly resides in using a "melting torpedo" rotatable element in the melting section of the extrusion apparatus.
    Type: Grant
    Filed: March 25, 1981
    Date of Patent: October 11, 1983
    Assignee: Stamicarbon, B.V.
    Inventors: Albert J. H. Brasz, Hermanus A. Wallink
  • Method for the forming of plastics
    Patent number: 4388262
    Abstract: Method for the forming of thermoplastic and/or elastomeric resins, in which method use is made of a melt torpedo in the melting zone of a processing machine having a screw. The torpedo has grooves and ridges with a helix angle of preferably between 55.degree. and 75.degree.. The final melt temperature, that is the temperature at the beginning of the outlet of the processing machine is chosen lower than that applied in the same processing machine without a torpedo.
    Type: Grant
    Filed: February 20, 1981
    Date of Patent: June 14, 1983
    Assignee: Stamicarbon, B.V.
    Inventors: Albert J. H. Brasz, Hermanus A. Wallink