Patents by Inventor Zhenghua Den

Zhenghua Den 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).

  • Microporous polymer membrane modified by aqueous polymer, manufacturing method and use thereof
    Patent number: 8808925
    Abstract: Microporous polyolefin membrane modified by aqueous polymer of the invention is obtained by the following steps: copolymerizing 100 parts of a water-soluble polymer, 30-500 parts of a hydrophobic monomer, 0-200 parts of a hydrophilic monomer and 1-5 parts of an initiator into polymeric colloid emulsion; adding 0-100% of an inorganic filler and 20-100% of a plasticizer based on 100% solid content of the polymeric colloid emulsion to obtain slurry; and coating the slurry on one or two surfaces of the surface modified microporous polyolefin membrane and then drying. The microporous polyolefin membrane modified by aqueous polymer has thermal shutdown effect and little thermal shrinkage, and improves the main problem of shrinkage of the microporous polyolefin membrane at high temperature.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: August 19, 2014
    Assignee: Changzhou Zhongke Laifang Power Development Co., Ltd.
    Inventors: Zhonglai Pan, Zhenghua Den, Rengui Li, Lu Wang, Kai Wang, Jiamin Deng, Hongchang Du, Jiandong Gao, Jishuan Suo
  • MICROPOROUS POLYMER MEMBRANE MODIFIED BY AQUEOUS POLYMER, MANUFACTURING METHOD AND USE THEREOF
    Publication number: 20110229768
    Abstract: Microporous polyolefin membrane modified by aqueous polymer of the invention is obtained by the following steps: copolymerizing 100 parts of a water-soluble polymer, 30-500 parts of a hydrophobic monomer, 0-200 parts of a hydrophilic monomer and 1-5 parts of an initiator into polymeric colloid emulsion; adding 0-100% of an inorganic filler and 20-100% of a plasticizer based on 100% solid content of the polymeric colloid emulsion to obtain slurry; and coating the slurry on one or two surfaces of the surface modified microporous polyolefin membrane and then drying. The microporous polyolefin membrane modified by aqueous polymer has thermal shutdown effect and little thermal shrinkage, and improves the main problem of shrinkage of the microporous polyolefin membrane at high temperature.
    Type: Application
    Filed: September 16, 2009
    Publication date: September 22, 2011
    Applicant: Changzhou Zhongke Laifang Power Development Co., Ltd.
    Inventors: Zhonglai Pan, Zhenghua Den, Rengui Li, Lu Wang, Kai Wang, Jiamin Deng, Hongchang Du, Jiandong Gao, Jishuan Suo