Patents by Inventor Mancai Xu

Mancai Xu 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).

  • Free radical post-crosslinked adsorbent and method of preparation
    Patent number: 8076384
    Abstract: A post-crosslinked adsorbent comprises: monomer units of (a) at least 55 wt % at least one polyvinylaromatic monomer and (b) up to 45 wt % at least one monovinylaromatic monomer; and 0.5-2.5 mmol/g pendent vinyl groups; wherein the dry adsorbent has BET specific surface area in the range of about 650-1000 m2/g, BET average pore diameter 7.2-10 nm, BET porosity 1.29-2.45 mL/g, BJH adsorption micropore volume was less than 20% of total BJH adsorption pore volume, and HK micropore volume was less than 21% of total BJH adsorption pore volume. The invention is also directed to a preparation method for the polymeric adsorbent.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: December 13, 2011
    Assignee: Rohm and Haas Company
    Inventors: Mancai Xu, Zheng Zhang
  • Free radical post-crosslinked adsorbent and method of preparation
    Publication number: 20090326086
    Abstract: A post-crosslinked adsorbent comprises: monomer units of (a) at least 55 wt % at least one polyvinylaromatic monomer and (b) up to 45 wt % at least one monovinylaromatic monomer; and 0.5-2.5 mmol/g pendent vinyl groups; wherein the dry adsorbent has BET specific surface area in the range of about 650-1000 m2/g, BET average pore diameter 7.2-10 nm, BET porosity 1.29-2.45 mL/g, BJH adsorption micropore volume was less than 20% of total BJH adsorption pore volume, and HK micropore volume was less than 21% of total BJH adsorption pore volume. The invention is also directed to a preparation method for the polymeric adsorbent.
    Type: Application
    Filed: June 10, 2009
    Publication date: December 31, 2009
    Inventors: Mancai Xu, Zheng Zhang
  • Friedel-crafts post-crosslinked adsorbent and method of preparation
    Publication number: 20090325798
    Abstract: A post-crosslinked adsorbent comprises: monomer units of (a) at least 47 wt % at least one polyvinylaromatic monomer and (b) up to 53 wt % at least one monovinylaromatic monomer; and 0-0.2 mmol/g pendent vinyl groups; wherein the dry adsorbent has BET specific surface area in the range of about 700-1500 m2/g, BET average pore diameter 6.0-11.8 nm, BET porosity 1.2-3.5 mL/g, BJH adsorption micropore volume less than 20% of total BJH adsorption pore volume, and HK micropore volume less than 24% of total BJH adsorption pore volume. The invention is also directed to a preparation method for the polymeric adsorbent.
    Type: Application
    Filed: June 10, 2009
    Publication date: December 31, 2009
    Inventors: Mancai Xu, Zheng Zhang