Patents by Inventor Zongqiu Su

Zongqiu Su 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 aqueous emulsion and a method to fabricate gloves and related products
    Patent number: 8127372
    Abstract: This invention relates to the method for fabrication of polyisoprene aqueous emulsion, gloves and related products thereof, wherein the aqueous emulsion is polyisoprene or polynitrile aqueous emulsion obtained through free-radical emulsion polymerization initiated by initiating agent under normal pressure with isoprene as the monomer, or isoprene monomer, acrylonitrile monomer, and (methyl)acrylic acid as the monomer mixture, and emulsifying agent and dispersing agent as the emulsification system. After the isoprene or the mixture of isoprene monomer, acrylonitrile monomer, and (methyl)acrylic acid is mixed with the initiating agent, the oil phase obtained together with reducing agent is added dropwise in different time quantums. The polymerization conversion rate of polyisoprene aqueous emulsion or polynitrile aqueous emulsion according to this invention is increased from the original 78% to over 97.5%.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: March 6, 2012
    Assignee: Shanghai Shengda Medical Application Co. Ltd.
    Inventor: Zongqiu Su
  • Polyisoprene aqueous emulsion and a method to fabricate gloves and related products
    Publication number: 20100237541
    Abstract: This invention relates to the method for fabrication of polyisoprene aqueous emulsion, gloves and related products thereof, wherein the aqueous emulsion is polyisoprene or polynitrile aqueous emulsion obtained through free-radical emulsion polymerization initiated by initiating agent under normal pressure with isoprene as the monomer, or isoprene monomer, acrylonitrile monomer, and (methyl)acrylic acid as the monomer mixture, and emulsifying agent and dispersing agent as the emulsification system. After the isoprene or the mixture of isoprene monomer, acrylonitrile monomer, and (methyl)acrylic acid is mixed with the initiating agent, the oil phase obtained together with reducing agent is added dropwise in different time quantums. The polymerization conversion rate of polyisoprene aqueous emulsion or polynitrile aqueous emulsion according to this invention is increased from the original 78% to over 97.5%.
    Type: Application
    Filed: June 26, 2009
    Publication date: September 23, 2010
    Inventor: Zongqiu Su