Patents by Inventor Rengi Peng

Rengi Peng 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).

  • Catalyst system for use in ethylene polymerization and copolymerization and process for preparing the same
    Patent number: 6617278
    Abstract: The present invention provides a catalyst system and processes for preparing the system for use in ethylene polymerization and copolymerization. The catalyst system is obtained by dissolving any electron-donor activator and optionally, a metal halide adjusting agent, into a solution of magnesium halide in a solvent system consisting essentially of organic epoxy compounds and organic phosphorous compounds to form a homogeneous solution. At least one coprecipitator and a titanium halide or its derivative is then mixed to form a solid component, followed by incorporating in combination with an organic aluminum component prior to use in polymerizations. The electron donor activator is an ether or alcohol, and the coprecipitator is an organic acid, anhydride, ether, or ketone.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: September 9, 2003
    Assignees: China Petro-Chemical Corporation, China Petro-Chemical Corporation Beijing Research Institute of Chemical Industry
    Inventors: Maozhu Jin, Yijing Sun, Yi Wang, Rengi Peng, Baolan Zhu, Zhaowen Ma