Patents by Inventor Kuanqiang Gao

Kuanqiang Gao 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: 8263520
    Abstract: A solid, hydrocarbon-insoluble, catalyst component useful in polymerizing olefins, said catalyst component containing magnesium, titanium, and halogen, and further containing an internal electron donor having a structure: [R1—O—C(O)—O—]xR2 wherein R1 is independently at each occurrence, an aliphatic or aromatic hydrocarbon, or substituted hydrocarbon group containing from 1 to 20 carbon atoms; x is 2-4; and R2 is an aliphatic or aromatic hydrocarbon, or substituted hydrocarbon group containing from 1 to 20 carbon atoms, provided that there are 2 atoms in the shortest chain connecting a first R1—O—C(O)—O— group and a second R1—O—C(O)—O— group.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: September 11, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: Joseph N. Coalter, III, Tak W. Leung, Tao Tao, Kuanqiang Gao
  • Publication number: 20110130530
    Abstract: A solid, hydrocarbon-insoluble, catalyst component useful in polymerizing olefins, said catalyst component containing magnesium, titanium, and halogen, and further containing an internal electron donor having a structure: [R1—O—C(O)—O—]xR2 wherein R1 is independently at each occurrence, an aliphatic or aromatic hydrocarbon, or substituted hydrocarbon group containing from 1 to 20 carbon atoms; x is 2-4; and R2 is an aliphatic or aromatic hydrocarbon, or substituted hydrocarbon group containing from 1 to 20 carbon atoms, provided that there are 2 atoms in the shortest chain connecting a first R1—O—C(O)—O— group and a second R1—O—C(O)—O— group.
    Type: Application
    Filed: November 30, 2010
    Publication date: June 2, 2011
    Applicant: Dow Global Technologies Inc.
    Inventors: Joseph N. Coalter, III, Tak W. Leung, Tao Tao, Kuanqiang Gao
  • Publication number: 20110130529
    Abstract: A solid, hydrocarbon-insoluble, catalyst component useful in polymerizing olefins, said catalyst component containing magnesium, titanium, and halogen, and further containing an internal electron donor having a structure: [R1—O—C(O)—O—]xR2 wherein R1 is independently at each occurrence, an aliphatic or aromatic hydrocarbon, or substituted hydrocarbon group containing from 1 to 20 carbon atoms; x is 2-4; and R2 is an aliphatic or aromatic hydrocarbon, or substituted hydrocarbon group containing from 1 to 20 carbon atoms, provided that there are from 3 to 4 atoms in the shortest chain connecting a first R1—O—C(O)—O— group and a second R1—O—C(O)—O— group.
    Type: Application
    Filed: November 30, 2010
    Publication date: June 2, 2011
    Applicant: Dow Global Technologies Inc.
    Inventors: Joseph N. Coalter, III, Tak W. Leung, Tao Tao, Kuanqiang Gao
  • Publication number: 20100273966
    Abstract: Disclosed are procatalyst compositions having an internal electron donor which includes an adamantanedicarboxylate and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions produce propylene-based olefins with broad molecular weight distribution.
    Type: Application
    Filed: April 16, 2010
    Publication date: October 28, 2010
    Inventors: Linfeng Chen, Tak W. Leung, Tao Tao, Kuanqiang Gao
  • Publication number: 20100204506
    Abstract: The present disclosure provides processes for the production of substituted phenylene aromatic diesters and the resultant compositions. The processes include reacting an aromatic diol with an aromatic carboxylic acid or a derivative thereof. The aromatic diol and/or the aromatic carboxylic acid (or derivative thereof) is/are substituted. The reaction forms a substituted phenylene aromatic diester with the structure (II): wherein R1-R14 are the same or different. At least one of R1-R14 is selected from a substituted hydrocarbyl group having 1 to 20 carbon atoms, an unsubstituted hydrocarbyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a heteroatom, and combinations thereof.
    Type: Application
    Filed: December 31, 2009
    Publication date: August 12, 2010
    Inventors: Linfeng Chen, Tak W. Leung, Tao Tao, Xiaodong Huang, Kuanqiang Gao, James X. Shu
  • Publication number: 20100174105
    Abstract: The present disclosure is directed to the production of 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate and the purification thereof. Synthesis pathways for a precursor to 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate are provided. The precursor is 5-tert-butyl-3-methylcatechol.
    Type: Application
    Filed: December 31, 2009
    Publication date: July 8, 2010
    Inventors: Tak W. Leung, Gary A. Roth, Tao Tao, Kuanqiang Gao, Linfeng Chen