Patents by Inventor Yundond Wang

Yundond Wang 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).

  • Process for the preparation of a dynamically vulcanized thermoplastic elastomer
    Patent number: 7452940
    Abstract: The present invention relates to a process for the preparation of a dynamically vulcanized thermoplastic elastomer comprising simultaneously mixing a thermoplastic polyolefin, a vulcanizable rubber and a curing agent in a co-rotating twin-screw extruder whereby the vulcanizable rubber is cured during mixing. The residence time in the extruder is less than 40 sec, the ratio of specific Energy (Espec)/residence time is at least 24 kW/kg and the ratio of the residence time/(Length/Diameter) is less than 0.60 sec. The invention further relates to the dynamically vulcanized thermoplastic elastomer obtainable by the process and to the use of the dynamically vulcanized thermoplastic elastomer in sealing systems, building profiles and extrusion applications.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: November 18, 2008
    Assignee: DSM I.P. Assets B.V.
    Inventors: Alberto O Dozeman, Ryszard Brzoskowski, Yundond Wang
  • Process for the preparation of a dynamically vulcanized thermoplastic elastomer
    Publication number: 20050085591
    Abstract: The present invention relates to a process for the preparation of a dynamically vulcanized thermoplastic elastomer comprising simultaneously mixing a thermoplastic polyolefin, a vulcanizable rubber and a curing agent in a co-rotating twin-screw extruder whereby the vulcanizable rubber is cured during mixing. The residence time in the extruder is less than 40 sec, the ratio of specific Energy (Espec)/residence time is at least 24 kW/kg and the ratio of the residence time/(Length/diameter) is less than 0.60 sec. The invention further relates to the dynamically vulcanized thermoplastic elastomer obtainable by the process and to the use of the dynamically vulcanized thermoplastic elastomer in sealing systems, building profiles and extrusion applications.
    Type: Application
    Filed: October 10, 2002
    Publication date: April 21, 2005
    Inventors: Albertus Dozeman, Ryszard Brzoskowski, Yundond Wang