Patents Assigned to Research Institute of Highway, Ministry of Transportation
  • Bio-asphalt, bio-asphalt composition and method for preparing them
    Patent number: 9752098
    Abstract: The disclosure provides bio-asphalt, bio-asphalt compositions and a method for preparing them. It belongs to the technical field of asphalt material. The method of the disclosure uses bio-oil as the raw material, adopts a combination of extraction process and oxidation process to prepare bio-asphalt, and modifies the product obtained from bio-oil by extraction process or bio-asphalt with ordinary petroleum asphalt and/or aromatic hydrocarbon oil and a macromolecular material to obtain a bio-asphalt composition.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: September 5, 2017
    Assignee: Research Institute of Highway, Ministry of Transportation
    Inventors: Dongwei Cao, Min He, Haiyan Zhang, Xiaowei Wu, Guoqi Tang, Ke Zhong, Yongjun Fan