Patents by Inventor Hua Guo

Hua Guo 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).

  • Electrically conductive thermoset composition, method for the preparation thereof, and articles derived therefrom
    Publication number: 20050109990
    Abstract: A conductive thermosetting composition comprises a functionalized poly(arylene ether), an alkenyl aromatic monomer, an acryloyl monomer, and a conductive agent. After curing, the composition exhibits good stiffness, toughness, heat resistance, and conductivity, and it is useful in the fabrication of a variety of conductive components, including the bipolar plates of fuel cells.
    Type: Application
    Filed: October 29, 2004
    Publication date: May 26, 2005
    Inventors: Gary Yeager, Manuel Cavazos, Hua Guo, Glen Merfeld, John Rude, Erich Teutsch, Kenneth Zarnoch
  • Compositions comprising functionalized polyphenylene ether resins
    Patent number: 6897282
    Abstract: The invention relates to a method of forming a polyphenylene ether resin containing residual aliphatic unsaturation. A polyphenylene ether is reacted with a capping agent in a solvent to form the polyphenylene ether resin containing residual aliphatic unsaturation, which is precipitated from solution by combining the solution with an antisolvent. The precipitated polyphenylene ether resin containing residual aliphatic unsaturation has lower levels of residual impurities than the same compound isolated by devolatilization.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: May 24, 2005
    Assignee: General Electric
    Inventors: Amy Freshour, Hua Guo, Robert L. Howe, Edward N. Peters, Gary William Yeager
  • Polymer bound single-site catalysts
    Publication number: 20050090384
    Abstract: A single-site catalyst is disclosed. The catalyst comprises a transition metal complex, an activator, and an allylic alcohol-containing polymer. The catalyst has high activity and great capability to incorporate higher ?-olefins into polyethylene. The polyethylene produced has high molecular weight and low density.
    Type: Application
    Filed: October 22, 2003
    Publication date: April 28, 2005
    Inventors: Shaotian Wang, Shao-Hua Guo
  • Poly(arylene ether)-containing thermoset composition in powder form, method for the preparation thereof, and articles derived therefrom
    Patent number: 6878781
    Abstract: A curable resin composition including a poly(arylene ether), an allylic monomer, and an acryloyl monomer may be formulated as a powder. The resin composition exhibits improved toughness, and it is useful in thermoset processing applications where use of powdered resins is preferred.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: April 12, 2005
    Assignee: General Electric
    Inventors: Kenneth Paul Zarnoch, Gary William Yeager, Hua Guo
  • Capped poly(arylene ether) composition and process
    Publication number: 20050075462
    Abstract: A thermoset composition exhibiting reduced water absorption in the cured state includes an olefinically unsaturated monomer and a capped poly(arylene ether) prepared by the reaction of an uncapped poly(arylene ether) with an anhydride capping agent. The capped poly(arylene ether) is isolated and/or purified by methods that reduce the concentrations of polar impurities that contribute to water absorption by the cured composition.
    Type: Application
    Filed: October 3, 2003
    Publication date: April 7, 2005
    Inventors: Kenneth Zarnoch, John Campbell, Amy Freshour, Hua Guo, John Rude, Prameela Susarla, Michael Vallance, Gary Yeager
  • Purified polymeric materials and methods of purifying polymeric materials
    Publication number: 20050064129
    Abstract: A method is disclosed to purify a polymeric material by filtering a melt comprising poly(arylene ether) and poly(alkenyl aromatic) through a melt filtration system. The method provides a filtered polymeric composition having reduced levels of particulate impurities. The filtered polymeric composition prepared is suitable for use in data storage media applications.
    Type: Application
    Filed: August 19, 2004
    Publication date: March 24, 2005
    Inventors: Jiawen Dong, Hua Guo, Robert Hossan, Christian Lietzau, Vijay Mhetar
  • Methods of preparing a polymeric material
    Publication number: 20050049333
    Abstract: A method is disclosed to prepare a polymeric material by filtering solutions of poly(arylene ether) and/or poly(alkenyl aromatic) through one or more filtration systems to provide a material having reduced levels of particulate impurities. The polymeric material prepared is suitable for use in data storage media applications.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 3, 2005
    Inventors: Paul Buckley, Jiawen Dong, Mark Giammattei, Hua Guo, Norberto Silvi
  • Methods of purifying polymeric material
    Publication number: 20050046070
    Abstract: A method is disclosed to purify a polymeric material by filtering a melt comprising poly(arylene ether) and poly(alkenyl aromatic) through a melt filtration system. The method provides a polymeric material having reduced levels of particulate impurities. The polymeric material prepared is suitable for use in data storage media applications.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 3, 2005
    Inventors: Jiawen Dong, Hua Guo, Robert Hossan
  • Drycleaning method using dipropylene glycol n-propyl ether
    Publication number: 20050044636
    Abstract: A drycleaning method is disclosed. In the method, a composition that comprises dipropylene glycol n-propyl ether (DPnP) and is essentially free of siloxanes or polysulfonic acids is used. The composition contains at least about 80 wt. % DPnP and up to about 15 wt. % of water. The method enables superior stain removal while avoiding excessive fabric shrinkage or soil redeposition.
    Type: Application
    Filed: September 2, 2003
    Publication date: March 3, 2005
    Inventors: Paul Galick, Larry Arndt, Shao-Hua Guo, Ellen Lenz, David Kinney
  • Methods of preparing a polymeric material composite
    Publication number: 20050049362
    Abstract: Methods to prepare a poly(arylene ether) and poly(alkenyl aromatic) polymeric material having reduced levels of particulate impurities are described. The polymeric material prepared is suitable for use in data storage media applications.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 3, 2005
    Inventors: Paul Buckley, Jiawen Dong, Mark Giammattei, Hua Guo, Robert Hossan, Christian Lietzau, Norberto Silvi
  • Polymerization catalyst system containing polyether-modified aluminoxane
    Publication number: 20050032634
    Abstract: A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst activated with the modified aluminoxane produces polyolefin with increased melt flow index, broadened molecular weight distribution, and improved thermal processability.
    Type: Application
    Filed: September 16, 2004
    Publication date: February 10, 2005
    Inventors: Shao-Hua Guo, Shaotian Wang
  • Preparation of olefin-acrylic copolymers with late transition metal catalysts
    Patent number: 6844402
    Abstract: A process for making olefin-acrylic copolymers is disclosed. The process comprises polymerizing an olefin and an acrylic monomer in the presence of an activator and a Group 8-10 late transition metal complex. The late transition metal catalyst contains an isoindoline ligand.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: January 18, 2005
    Assignee: Equistar Chemicals, LP
    Inventors: Jia-Chu Liu, Mark P. Mack, Shao-Hua Guo
  • Polymerization catalyst system containing polyether-modified aluminoxane
    Patent number: 6841506
    Abstract: A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst activated with the modified aluminoxane produces polyolefin with increased melt flow index, broadened molecular weight distribution, and improved thermal processability.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: January 11, 2005
    Assignee: Equistar Chemicals, LP
    Inventors: Shao-Hua Guo, Shaotian Wang
  • UV-curable compositions
    Publication number: 20040214980
    Abstract: A UV-curable composition is disclosed. The composition comprises a crosslinking agent, a hydroxyalkyl acrylate or methacrylate, and an acrylic polyol. The crosslinking agent is selected from the group consisting of multifunctional isocyanates, melamines, and silanes. The acrylic polyol comprises recurring units of an allylic alcohol. The composition can be irradiated to be solidified and then fully cured by the urethane, melamine, or silane reactions. Alternatively, the composition can be cured by the urethane, melamine, or silane reactions, and then fully cured by radiation. The invention provides low VOC but high performance coatings. More importantly, the invention provides a UV-curable system without the need for acrylated oligomers.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 28, 2004
    Inventors: Daniel B. Pourreau, Shanti P. Patel, L. Joseph Junker, Wei Wang, Stephen H. Harris, Shao-Hua Guo
  • POLYMERIZATION CATALYST SYSTEM CONTAINING POLYETHER-MODIFIED ALUMINOXANE
    Publication number: 20040204311
    Abstract: A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst activated with the modified aluminoxane produces polyolefin with increased melt flow index, broadened molecular weight distribution, and improved thermal processability.
    Type: Application
    Filed: March 5, 2004
    Publication date: October 14, 2004
    Applicant: Equistar Chemicals, LP
    Inventors: Shao-Hua Guo, Shaotian Wang
  • Poly(arylene ether) compositions
    Publication number: 20040171733
    Abstract: A poly(arylene ether) composition comprises a first poly(arylene ether) resin having an intrinsic viscosity greater than or equal to about 0.3 dl/g, as measured in chloroform at 25° C. and a second viscosity poly(arylene ether) resin having an intrinsic viscosity less than or equal to about 0.17 dl/g, as measured in chloroform at 25° C. wherein the composition is essentially free of plasticizers.
    Type: Application
    Filed: February 12, 2004
    Publication date: September 2, 2004
    Inventors: Kim Balfour, Hua Guo, Michael Murray
  • Compositions comprising functionalized polyphenylene ether resins
    Patent number: 6780959
    Abstract: The invention relates to a polyphenylene ether resin containing residual aliphatic unsaturation as well as composites, blends, and articles made from the polyphenylene ether resin containing residual aliphatic unsaturation. Also included are reaction products between the polyphenylene ether resin containing residual aliphatic unsaturation and other resins and unsaturated resin formulations, e.g., thermosetting polyesters, acrylics, bismaleiimides, silicones, and allylics, and thermoplastics such as polyolefins, styrenics, rubbers, etc.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: August 24, 2004
    Assignee: General Electric Company
    Inventors: Adrianus J. F. M. Braat, Herbert Shin-I Chao, Hua Guo, Juraj Liska, Gary William Yeager
  • Abrasive-filled thermoset composition and its preparation, and abrasive-filled articles and their preparation
    Patent number: 6770107
    Abstract: A curable resin composition comprises a poly(arylene ether), an acryloyl monomer, an allylic monomer, and an abrasive filler. The composition tolerates high filler contents, cures rapidly, and exhibits excellent toughness after curing. Useful articles prepared from the composition include grinding wheels and cut-off wheels having good wear characteristics.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: August 3, 2004
    Assignee: General Electric Company
    Inventors: Erich Otto Teutsch, Gary William Yeager, Kenneth Paul Zarnoch, Steven William Webb, Hua Guo
  • Poly(phenylene ether)-polyvinyl thermosetting adhesives films, and substrates made therefrom
    Publication number: 20040137251
    Abstract: This invention is directed to an adhesive resin composition having better processability, exhibiting reduced B-staged (partially cured) friability, and capable of being produced in a wide range of flow characteristics dependent upon the applications desired. Specifically, the composition, comprising a poly(arylene ether)-polyvinyl resin and curable unsaturated monomer, is applied to a metal foil or thermoplastic substrate or a free-standing film. The thermoplastic substrate may have an electrically conductive metal, such as copper, on one side. Better final film properties can be achieved by tailored functionality of cross-linking by control of ingredients and/or chain length (molecular weight) of ingredients used in making the novel adhesive composition.
    Type: Application
    Filed: July 18, 2003
    Publication date: July 15, 2004
    Inventors: Michael John Davis, James Estel Tracy, Hua Guo
  • Thermoset composite composition, method, and article
    Publication number: 20040122153
    Abstract: A curable composition includes a functionalized poly(arylene ether) an olefinically unsaturated monomer, and a nanofiller. Methods of preparing and curing the composition, as well as uses for the cured composition, are described.
    Type: Application
    Filed: December 11, 2003
    Publication date: June 24, 2004
    Inventors: Hua Guo, Zhiqing Lin, Gary William Yeager