Patents by Inventor Rong Junfeng

Rong Junfeng 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).

  • Magnesium chloride-alcohol carrier and olefin polymerization catalyst components made from the same
    Patent number: 6828267
    Abstract: Described are a MgCl2 based carrier containing Ti(OR)4 and ROH, wherein R is C1˜C7alkyl, and solid catalyst components made from said carrier. The carrier and the solid catalyst components according to the present invention are characterized in that their X-rays powder diffraction spectra, one or two main diffraction lines or a halo appears at 2&thgr; of 2˜14° and in the range of 2&thgr; of 14˜50°, there are the characteristic diffraction lines of anhydrous &agr;-MgCl2. The carrier according to the present invention is directly obtained by reacting anhydrous magnesium chloride with an alcohol and can be used to prepare solid catalyst components without dealcoholization, and the solid catalyst components exhibit high polymerization activity when employed for polymerizing ethylene.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: December 7, 2004
    Assignees: China Petro Chemical Corporation, Research Institute of Petroleum Processing Sinopec
    Inventors: Zhenhua Jing, Rong Junfeng, Wei Zhang, Xiaoyu Hong, Xuhua Zhou
  • Magnesium chloride-alcohol carrier and olefin polymerization catalyst components made from the same
    Publication number: 20020035028
    Abstract: Described are a MgCl2 based carrier containing Ti(OR)4 and ROH, wherein R is C1˜C7alkyl, and solid catalyst components made from said carrier. The carrier and the solid catalyst components according to the present invention are characterized in that in their X-rays powder diffraction spectra, one or two main diffraction lines or a halo appears at 2&thgr; of 2˜14° and in the range of 2&thgr; of 14˜50°, there are the characteristic diffraction lines of anhydrous &agr;-MgCl2. The carrier according to the present invention is directly obtained by reacting anhydrous magnesium chloride with an alcohol and can be used to prepare solid catalyst components without dealcoholization, and the solid catalyst components exhibit high polymerization activity when employed for polymerizing ethylene.
    Type: Application
    Filed: May 18, 2001
    Publication date: March 21, 2002
    Applicant: China Petro Chemical Corporation
    Inventors: Zhenhua Jing, Rong Junfeng, Wei Zhang, Xiaoyu Hong, Xuhua Zhou