Patents by Inventor Longlan Cui

Longlan Cui 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).

  • Method for producing block copolymers
    Patent number: 8829116
    Abstract: A method for producing an AB block copolymer with PDI is provided. The method comprises steps of: 1) reaction, in the presence of at least one free radical initiator, of a reaction mixture comprising a compound of formula (I), and 2) reaction, at a temperature of 45° C. or above, of a reaction mixture comprising an ethylenically unsaturated monomer B and, independent from that of step 1), a compound of formula (I) and the macroinitiator of step 1) in solvent(s) to obtain the AB block copolymer; wherein the weight ratio of the compound of formula (I) to the macroinitiator in step 2) is at least 1:1000.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: September 9, 2014
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Longlan Cui, Shaoguang Feng, Yanfei Liu, Tao Wang, Qingwei Zhang
  • Polymerization process for preparing monodispersal organic/inorganic composite nano-microsphere
    Patent number: 8552110
    Abstract: Polymerization process for preparing mono-disperse organic/inorganic nanocomposite microspheres in the field of nano technology is disclosed. The process comprises preparing of two different miniemulsion systems of A with inorganic nanoparticles and B with polymeric monomers in advance; adding water-soluble initiator into miniemulsion A, stirring till complete dissolution finally, heating the mixed system to a given temperature for isothermal reaction. The grain size of the as-prepared superparamagnetic Fe3O4/polystyrene using to present invention is homogeneous and controllable, and the magnetic particles content is controllable.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: October 8, 2013
    Assignee: Shanghai Allrun Nano Science and Technology Co., Ltd.
    Inventors: Longlan Cui, Hong Xu, Hongchen Gu
  • METHOD FOR PRODUCING BLOCK COPOLYMERS
    Publication number: 20120101218
    Abstract: A method for producing an AB block copolymer with PDI is provided. The method comprises steps of: 1) reaction, in the presence of at least one free radical initiator, of a reaction mixture comprising a compound of formula (I), and 2) reaction, at a temperature of 45° C. or above, of a reaction mixture comprising an ethylenically unsaturated monomer B and, independent from that of step 1), a compound of formula (I) and the macroinitiator of step 1) in solvent(s) to obtain the AB block copolymer; wherein the weight ratio of the compound of formula (I) to the macroinitiator in step 2) is at least 1:1000.
    Type: Application
    Filed: October 24, 2011
    Publication date: April 26, 2012
    Inventors: Longlan CUI, Shaoguang FENG, Yanfei LIU, Tao WANG, Qingwei ZHANG
  • POLYMERIZATION PROCESS FOR PREPARING MONODISPERSAL ORGANIC/INORGANIC COMPOSITE NANO-MICROSPHERE
    Publication number: 20100292388
    Abstract: Polymerization process for preparing mono-disperse organic/inorganic nanocomposite microspheres in the field of nano technology is disclosed. The process comprises preparing of two different miniemulsion systems of A with inorganic nanoparticles and B with polymeric monomers in advance; adding water-soluble initiator into miniemulsion A, stirring till complete dissolution finally, heating the mixed system to a given temperature for isothermal reaction. The grain size of the as-prepared superparamagnetic Fe3O4/polystyrene using to present invention is homogeneous and controllable, and the magnetic particles content is controllable.
    Type: Application
    Filed: January 11, 2007
    Publication date: November 18, 2010
    Applicants: SHANGHAI JIAOTONG UNIVERSITY, SHANGHAI ALLRUN NANO SCIENCE AND TECHNOLOGY CO., LTD.
    Inventors: Longlan Cui, Hong Xu, Hongchen Gu