Patents Assigned to SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
  • Sulfonatocalixarene tanning agent for leather tanning and preparation method therefor
    Patent number: 9970069
    Abstract: A sulfonatocalixarene tanning agent for leather tanning and a preparation method comprises: using resorcinol and aldehyde monomers as raw materials for the tanning agent; adding an ethanol solution into the resorcinol, dropwise adding an inorganic strong acid catalyst and aldehyde derivatives, heating to react, cooling, carrying out suction filtration, repeatedly washing with ethanol and distilled water, and drying to obtain resorcinol calixarene; and weighing the resorcinol calixarene, and adding a sulfonating agent to react, thereby obtaining a sulfonatocalixarene tanning agent aqueous solution.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: May 15, 2018
    Assignee: SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
    Inventors: Jianzhong Ma, Yongxiang Zhou, Dangge Gao, Panpan Zhang, Bin Lv
  • LAPPACONITINE AZA-CINNAMIC ACID DERIVATIVES WITH ANTI-TUMOR ACTIVITIES AND A METHOD OF PREPARING THE SAME
    Publication number: 20180093966
    Abstract: A lappaconitine aza-cinnamic acid derivative having the following formula (I): X is C or N, and R1, R2, and R3 are independently H or lower alkyl. A method of preparing the lappaconitine aza-cinnamic acid derivative of formula (I) is also disclosed.
    Type: Application
    Filed: September 25, 2017
    Publication date: April 5, 2018
    Applicant: SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Chengyuan LIANG, Xingke JU, Lei TIAN, Minyi JIA, Danni TIAN, Shunjun DING
  • Coumarin-gossypol derivatives with antitumor activities and a method of preparing the same
    Patent number: 9758503
    Abstract: A compound with antitumor activities is represented by formula A or formula B R1, R2, R3, and R4 are independently hydrogen, hydroxyl, alkoxy, halogen, formyl, unsubstituted or substituted alkyl, or unsubstituted or substituted cycloalkyl.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: September 12, 2017
    Assignee: SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Chengyuan Liang, Danni Tian, Minyi Jia, Xuechuan Wang, Xiaolin Xie, Dezhu Zhang
  • Edaravone-gossypol derivatives with antitumor activities and a method of preparing the same
    Patent number: 9758486
    Abstract: A compound with antitumor activities represented by formula I: In formula I, R1 is alkyl, alkoxy, or ethenyl; and R2 is alkyl, alkoxy, or halogen.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: September 12, 2017
    Assignee: SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Chengyuan Liang, Danni Tian, Minyi Jia, Xiaolin Xie, Dezhu Zhang, Weihui Ju, Shunjun Ding, Xuechuan Wang
  • Asymmetric 7-N isatin dimer Schiff base compounds with antitumor activities and a method of preparing the same
    Patent number: 9751896
    Abstract: A compound with antitumor activities is represented by formula: R1, R2, R3, and R4 are independently hydrogen, nitro, alkoxy, halogen, unsubstituted or substituted phenyl, or unsubstituted or substituted alkyl or cycloalkyl.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: September 5, 2017
    Assignee: SHAANXI UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Chengyuan Liang, Minyi Jia, Danni Tian, Xuechuan Wang, Xuefeng Chen, Juan Li, Guang Tong
  • SULFONATOCALIXARENE TANNING AGENT FOR LEATHER TANNING AND PREPARATION METHOD THEREFOR
    Publication number: 20170137903
    Abstract: A sulfonatocalixarene tanning agent for leather tanning and a preparation method comprises: using resorcinol and aldehyde monomers as raw materials for the tanning agent; adding an ethanol solution into the resorcinol, dropwise adding an inorganic strong acid catalyst and aldehyde derivatives, heating to react, cooling, carrying out suction filtration, repeatedly washing with ethanol and distilled water, and drying to obtain resorcinol calixarene; and weighing the resorcinol calixarene, and adding a sulfonating agent to react, thereby obtaining a sulfonatocalixarene tanning agent aqueous solution.
    Type: Application
    Filed: June 18, 2015
    Publication date: May 18, 2017
    Applicant: SHAANXI UNIVERSITY OF SCIENCE & TECHNOLOGY
    Inventors: Jianzhong MA, Yongxiang ZHOU, Dangge GAO, Panpan ZHANG, Bin LV