Patents by Inventor Zhanxia Lü

Zhanxia Lü 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).

  • Star-block interpolymers and preparation of the same
    Patent number: 6462137
    Abstract: The present invention relates to star-block interpolymers having the following structure (X-Y)n-C, wherein X represents a random copolymer block derived from conjugated diene and monovinyl aromatic monomer; Y represents a polyconjugated diene block; C represents a residue derived from a multifunctional lithium based initiator; and n represents the functionality of the initiator and has a value of not less than 3; and preparation of the same. The star-block interpolymers according to the present invention have in the same molecule both a random copolymer block derived from conjugated diene and monovinyl aromatic monomer and a rubber block selected from the group consisting of a homopolymer block derived from conjugated diene, a tapered copolymer block derived from conjugated dienes, a random copolymer block derived from conjugated dienes and combinations thereof, and hence possess excellent properties of the both kinds of rubbers, and can be used widely as elastomeric materials.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: October 8, 2002
    Assignees: China Petroleum and Chemical Corporation, Research Institute of Beijing Yanshan Petrochemical Co., Ltd.
    Inventors: Yang Li, Hongde Xu, Yurong Wang, Dingyi Hong, Mingchu Gu, Mei Wang, Zhanxia Lü, Aili Xu