Patents by Inventor Ren Yu

Ren Yu 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).

  • Thermoplastic polycarbonate/polyester blend compositions with improved mechanical properties
    Patent number: 8071694
    Abstract: Disclosed is a thermoplastic composition comprising a mixture of from 10 to 98 weight % of a polycarbonate polymer, from 2 to 90 weight % of a polyester polymer comprising structures derived from a diol compound having the structure (A) HO—Z—OH, wherein Z is a C1 to C36 linear aliphatic radical, a C3 to C36 branched aliphatic or cycloaliphatic radical, a C6 to C36 aryl radical, or a C7 to C36 alkylaryl radical, and a diacid compound having the structure (B) HOOC—CH2CH2—COOH, from 0 to 5 weight % of a polylactic acid polymer, wherein the sum of the polycarbonate polymer, the polyester polymer, and the polylactic acid polymer is equal to 100 weight %. The thermoplastic composition has improved mechanical properties.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: December 6, 2011
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Ren Yu, Jing Zhang, Zhaohui Qu, Tong Sun, Wayne Yao
  • THERMOPLASTIC POLYCARBONATE/POLYESTER BLEND COMPOSITIONS WITH IMPROVED MECHANICAL PROPERTIES
    Publication number: 20090209695
    Abstract: Disclosed is a thermoplastic composition comprising a mixture of from 10 to 98 weight % of a polycarbonate polymer, from 2 to 90 weight % of a polyester polymer comprising structures derived from a diol compound having the structure (A) HO-Z-OH, wherein Z is a C1 to C36 linear aliphatic radical, a C3 to C36 branched aliphatic or cycloaliphatic radical, a C6 to C36 aryl radical, or a C7 to C36 alkylaryl radical, and a diacid compound having the structure (B) HOOC—CH2CH2—COOH, from 0 to 5 weight % of a polylactic acid polymer, wherein the sum of the polycarbonate polymer, the polyester polymer, and the polylactic acid polymer is equal to 100 weight %. The thermoplastic composition has improved mechanical properties.
    Type: Application
    Filed: February 20, 2008
    Publication date: August 20, 2009
    Inventors: Ren Yu, Jing Zhang, Zhaohui Qu, Tong Sun, Wayne Yao