Patents by Inventor Dong-Wei Zhu

Dong-Wei Zhu 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).

  • Patent number: 8507092
    Abstract: A surface having dust particles thereon and a coating on the surface comprising a coating polymer having a Tg less than ?20° C. A method of reducing dust, the method including providing a surface having dust particles thereon and coating the surface with a coating polymer with a Tg less than ?20° C.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: August 13, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne W. Fan, Dong-Wei Zhu, Qin Zhu, Jeffry L. Jacobs, Mary Lou Morris, Kathleen R. Reynolds, Uyen N. Tang
  • Publication number: 20120135240
    Abstract: A surface having dust particles thereon and a coating on the surface comprising a coating polymer having a Tg less than ?20° C. A method of reducing dust, the method including providing a surface having dust particles thereon and coating the surface with a coating polymer with a Tg less than ?20° C.
    Type: Application
    Filed: February 6, 2012
    Publication date: May 31, 2012
    Inventors: Wayne W. Fan, Dong-Wei Zhu, Qin Zhu, Jeffry L. Jacobs, Mary Lou Morris, Kathleen R. Reynolds, Uyen N. Tang
  • Patent number: 8124231
    Abstract: The present application is directed to an article comprising a dusty surface and a coating on the dusty surface comprising a coating polymer having a Tg less ?20° C. and a method of reducing dust. In some embodiments, the polymer has a Tg less than ?30° C., and in specific embodiments, the polymer has a Tg less than ?45° C. The dusty surface may be, for example, crushed stone, coal, iron ore, gravel, sand or other aggregates (e.g. a roofing granule,) or a soil surface. Generally, the coating polymer comprises a polyacrylate, polyurethane, synthetic and natural rubber, silicone and other organic polymers. In specific embodiments, the coating polymer comprises an acrylic emulsion polymer.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: February 28, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne W. Fan, Dong-Wei Zhu, Qin Zhu, Jeffry L. Jacobs, Mary Lou Morris, Kathleen R. Reynolds, Uyen N. Tang
  • Publication number: 20110274770
    Abstract: A skin antisepsis composition comprising a comprising a (C1-4)alcohol and water in a ratio of at least 60:40, a hydroxycarboxylic acid, a cationic film-forming polymer, and at least one antimicrobial agent; and methods of using the composition are provided.
    Type: Application
    Filed: July 19, 2011
    Publication date: November 10, 2011
    Inventors: Matthew T. Scholz, Danli Wang, Triet M. Lu, Dong-Wei Zhu
  • Publication number: 20110269865
    Abstract: A method for building three-dimensional articles using a thermal polymerization process in provided. The articles are built by using a composition that includes a thermally polymerizable composition, a thermal initiator, and a nonlinear light-to-heat conversion material such as a reverse saturable dye. The article is built by the sequential exposure of adjacent voxels with a laser beam. Microlens arrays can be used to expose more than one voxel at a time.
    Type: Application
    Filed: November 11, 2009
    Publication date: November 3, 2011
    Inventors: Pingfan Wu, Ying-Yuh Lu, Robin E. Wright, Robin J. DeVoe, Travis L. Potts, Douglas S. Dunn, Wayne S. Mahoney, Dong-Wei Zhu
  • Patent number: 8039528
    Abstract: A method for the manufacture of an adhesive id described, comprising: (A) Providing an initial reaction product of a solution polymerization reaction, the initial reaction product comprising polymer, unreacted polymerizable reactant, non-polymerizable material, and solvent; and (B) Purifying the initial reaction product by adding an oxidizing agent and a reducing agent to the initial reaction product and allowing the unreacted polymerizable reactant in the initial reaction product to further react, thereby providing a second reaction product comprising additional polymer and a lower level of unreacted polymerizable reactant than was present in the initial reaction product.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: October 18, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Dong-Wei Zhu, Cheryl L. Moore, James T. Wolter
  • Publication number: 20110112458
    Abstract: Provided are methods of improving the moisture vapor transmission rate of a pressure sensitive adhesive layer in a medical article with a miscible composition, as well as medical articles including the improved pressure sensitive adhesive layer.
    Type: Application
    Filed: November 9, 2010
    Publication date: May 12, 2011
    Inventors: David R. Holm, Dong-Wei Zhu
  • Publication number: 20110112457
    Abstract: Provided are medical articles (e.g., wound dressings) that include a pressure sensitive adhesive layer and methods of making the medical articles using immiscible materials that increase moisture vapor transmission rates.
    Type: Application
    Filed: November 9, 2010
    Publication date: May 12, 2011
    Inventors: DAVID R. HOLM, Dong-Wei Zhu
  • Publication number: 20110104486
    Abstract: Adhesives suitable for use with low surface energy materials are described. The adhesive contain an acrylic copolymer, a high glass transition temperature tackifier and a low glass transition temperature tackifier. The acrylic copolymer is the reaction product of a first alkyl(meth)acrylate having at least 5 carbon atoms in the alkyl group, a second alkyl(meth)acrylate having 1 to 4 carbon atoms in the alkyl group, and a vinyl carboxylic acid. Both tackifiers have a Tg greater than the Tg of the acrylic copolymer. The high glass transition temperature tackifier has a Tg of at least 20° C. and the low glass transition temperature tackifier has a Tg of less than 0° C.
    Type: Application
    Filed: June 10, 2009
    Publication date: May 5, 2011
    Inventors: Jingjing Ma, Zhong Chen, Megan P. Lehmann, Michael L. Tumey, Dong-Wei Zhu
  • Patent number: 7931774
    Abstract: Acrylic adhesives containing an acrylic polymer and a plasticizer are provided. The acrylic polymer includes copolymerized monomers of a first alkyl acrylate, a second alkyl acrylate, and a vinyl carboxylic acid. The alkyl group of the first alkyl acrylate has at least 4 carbon atoms, and the alkyl group of the second alkyl acrylate has 1-3 carbon atoms. The plasticizers include a di-ethoxylated tertiary amine segment.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: April 26, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Peter B. Hall, Jingjing Ma, Dong-Wei Zhu
  • Publication number: 20100227969
    Abstract: A crosslinkable, pre-adhesive composition is described comprising an acid-functional (meth)acrylate copolymer and an aziridine crosslinking agent, which when crosslinked provides a pressure-sensitive adhesive and pressure-sensitive adhesive articles.
    Type: Application
    Filed: February 22, 2010
    Publication date: September 9, 2010
    Inventors: Peiwang Zhu, Zhong Chen, Babu N. Gaddam, Larry R. Krepski, Jingjing Ma, David B. Olson, Andrew Satrijo, Dong-Wei Zhu
  • Publication number: 20100203338
    Abstract: The present application is directed to an article comprising a dusty surface and a coating on the dusty surface comprising a coating polymer having a Tg less ?20° C. and a method of reducing dust. In some embodiments, the polymer has a Tg less than ?30° C., and in specific embodiments, the polymer has a Tg less than ?45° C. The dusty surface may be, for example, crushed stone, coal, iron ore, gravel, sand or other aggregates (e.g. a roofing granule,) or a soil surface. Generally, the coating polymer comprises a polyacrylate, polyurethane, synthetic and natural rubber, silicone and other organic polymers. In specific embodiments, the coating polymer comprises an acrylic emulsion polymer.
    Type: Application
    Filed: November 9, 2009
    Publication date: August 12, 2010
    Inventors: Wayne W. Fan, Dong-Wei Zhu, Qin Zhu, Jeffry L. Jacobs, Mary Lou Morris, Kathleen K Reynolds, Uyen N. Tang
  • Publication number: 20100136265
    Abstract: Provided is an optically clear display-grade adhesive comprising (a) a crosslinked acrylic pressure sensitive adhesive, (b) an organic-soluble and dissociable salt, and optionally (c) a non-hydrophilic plasticizer, wherein the adhesive is electrostatically dissipative transmissive to visible light with low haze. Also provided are with methods of making and using the same.
    Type: Application
    Filed: April 11, 2008
    Publication date: June 3, 2010
    Inventors: Albert I. Everaerts, Jianhui Xia, Wanshik Yoon, Dong-Wei Zhu, William M. Lamanna, Thomas P. Klun
  • Publication number: 20090018274
    Abstract: A method for the manufacture of an adhesive id described, comprising: (A) Providing an initial reaction product of a solution polymerization reaction, the initial reaction product comprising polymer, unreacted polymerizable reactant, non-poly-merizable material, and solvent; and (B) Purifying the initial reaction product by adding an oxidizing agent and a reducing agent to the initial reaction product and allowing the unreacted polymerizable reactant in the initial reaction product to further react, thereby providing a second reaction product comprising additional polymer and a lower level of unreacted polymerizable reactant than was present in the initial reaction product.
    Type: Application
    Filed: September 21, 2006
    Publication date: January 15, 2009
    Inventors: Dong-Wei Zhu, Cheryl L. Moore, James T. Wolter
  • Publication number: 20080115889
    Abstract: Acrylic adhesives containing an acrylic polymer and a plasticizer are provided. The acrylic polymer includes copolymerized monomers of a first alkyl acrylate, a second alkyl acrylate, and a vinyl carboxylic acid. The alkyl group of the first alkyl acrylate has at least 4 carbon atoms, and the alkyl group of the second alkyl acrylate has 1-3 carbon atoms. The plasticizers include a di-ethoxylated tertiary amine segment.
    Type: Application
    Filed: June 22, 2007
    Publication date: May 22, 2008
    Inventors: Peter B. Hall, Jingjing Ma, Dong-Wei Zhu
  • Patent number: 7323163
    Abstract: Film-forming compositions, as well as methods of making and using, wherein the compositions include an optional active agent, water, a surfactant, and a water-soluble or water-dispersible vinyl polymer comprising amine group-containing side-chains and a copolymerized hydrophobic monomer; wherein the amine equivalent weight of the polymer is at least about 300 grams polymer per equivalent of amine group.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: January 29, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Danli Wang, Matthew T. Scholz, Dong-Wei Zhu, Triet M. Lu
  • Publication number: 20060291055
    Abstract: The disclosure describes an optical article having a reflective polarizer, a light diffusing layer, and an adhesive layer disposed between the reflective polarizer and the light diffusing layer. The adhesive layer bonds the reflective polarizer and the light diffusing layer together. The adhesive includes a (meth)acrylate monomer and a reinforcing monomer comprising an acid or base functionality.
    Type: Application
    Filed: June 9, 2006
    Publication date: December 28, 2006
    Inventors: Mark Gehlsen, Ryan Fabick, Audrey Sherman, Linda Rivard, Dong-Wei Zhu
  • Patent number: 7147873
    Abstract: Antiseptic compositions, as well as methods of making and using, wherein the compositions include: an antimicrobial agent selected from the group consisting of iodine (I2), an iodophor, and a combination thereof, wherein the antimicrobial agent is present in an amount sufficient to provide an available iodine concentration of at least about 0.25 wt-%; a hydroxycarboxylic acid buffer in an amount of at least about 5 wt-%; water; and an optionally substantive film-forming polymer.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: December 12, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Matthew T. Scholz, Danli Wang, Triet M. Lu, Dong-Wei Zhu
  • Publication number: 20060177511
    Abstract: Antiseptic compositions, as well as methods of making and using, wherein the compositions include: an antimicrobial agent selected from the group consisting of iodine (I2), an iodophor, and a combination thereof, wherein the antimicrobial agent is present in an amount sufficient to provide an available iodine concentration of at least about 0.25 wt-%; a hydroxycarboxylic acid buffer in an amount of at least about 5 wt-%; water; and an optionally substantive film-forming polymer.
    Type: Application
    Filed: March 10, 2006
    Publication date: August 10, 2006
    Inventors: Matthew Scholz, Danli Wang, Triet Lu, Dong-Wei Zhu
  • Patent number: 7005031
    Abstract: A pressure sensitive adhesive composition is provided that includes a pressure sensitive adhesive polymer. The polymer includes: at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester monomer, wherein the (meth)acrylic acid ester monomer, when homopolymerized, has a Tg of less than about 25° C.; at least one copolymerized monoethylenically unsaturated reinforcing monomer, wherein the reinforcing monomer, when homopolymerized, has a Tg of at least about 25° C.; covalently bonded quarternary ammonium functionality; and, optionally, at least one copolymerized monoethylenically unsaturated poly(alkylene oxide) monomer. The composition optionally further includes at least one nonreactive poly(alkylene oxide) polymer and/or at least one antimicrobial agent.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: February 28, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Donald H. Lucast, Dong-Wei Zhu