Patents by Inventor Jiangwei Zhao

Jiangwei Zhao 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).

  • POLYISOPRENE, PREPARATION METHOD THEREOF, POLYISOPRENE RUBBER COMPOUNDS AND VULCANIZATE THEREFROM
    Publication number: 20130317176
    Abstract: The method for preparation of polyisoprene includes conducting polymerization reaction of isoprene in a first organic solvent under the presence of rare earth catalyst I and rare earth catalyst II, to obtain polyisoprene with bimodal molecular weight distribution, wherein the polymerization reaction conditions are controlled to ensure the peak molecular weight of the high molecular weight component fraction in the polyisoprene is 1×106-2×106 and the peak molecular weight of the low molecular weight component fraction is 2×105-4×105, and the weight ratio of content of the high molecular weight component fraction to the low molecular weight component fraction is 1-25:1. The molecular weight distribution of the polyisoprene obtained with the method provided is bimodal distribution; therefore, the polyisoprene not only has the mechanical properties of polyisoprene with high molecular weight, but also has the processability of polyisoprene with low molecular weight.
    Type: Application
    Filed: May 28, 2013
    Publication date: November 28, 2013
    Applicants: Beijing Research Institute of Chemical Industry China Petroleum & Chemical Corporation, China Petroleum & Chemical Corporation
    Inventors: Aimin LIANG, Jie Zhang, Jiangwei Zhao, Chuanqing Li, Lin Xu, Ximing Xie, Guozhu Yu, Sufang Ouyang, Jinmei Tan, Liangliang Yang, Wei Sun, Yishuang Xin