Patents by Inventor Allen XU

Allen XU 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).

  • Two component polyurethane coating compositions comprising isocyanurate compositions from bis(isocyanatomethyl) cyclohexane and from aliphatic diisocyanates
    Patent number: 8802771
    Abstract: The present invention provides two-component polyurethane compositions comprising, as one component, polyisocyanate compositions of the isocyanurate of one or more bis(isocyanatomethyl)cyclohexane or, preferably, a mixture of two or more of these, and of the isocyanurate of hexamethylene diisocyanate (HDI trimer), and, as the other component, a mix of a soft polyol having a hydroxyl functionality of from 2.5 to 5.0 and a molecular weight of from 500 to 3,000, and a hard polyol. Such compositions provide coatings, especially clear topcoats, which exhibit excellent scratch and mar and solvent resistance in addition to a good balance of hardness and flexibility without the need for increasing the volatile organic content (VOC) of the compositions. Also provided are compositions of a polyisocyanate compositions of the isocyanurate of one or more bis(isocyanatomethyl)cyclohexane with soft polyol which have lower VOCs.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: August 12, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: John N. Argyropoulos, Debkumar Bhattacharjee, Donald C. Schall, Allen Xu, Aaron Yang, Louie Luo
  • TWO COMPONENT POLYURETHANE COATING COMPOSITIONS COMPRISING ISOCYANURATE COMPOSITIONS FROM BIS(ISOCYANATOMETHYL) CYCLOHEXANE AND FROM ALIPHATIC DIISOCYANATES
    Publication number: 20120130016
    Abstract: The present invention provides two-component polyurethane compositions comprising, as one component, polyisocyanate compositions of the isocyanurate of one or more bis(isocyanatomethyl)cyclohexane or, preferably, a mixture of two or more of these, and of the isocyanurate of hexamethylene diisocyanate (HDI trimer), and, as the other component, a mix of a soft polyol having a hydroxyl functionality of from 2.5 to 5.0 and a molecular weight of from 500 to 3,000, and a hard polyol. Such compositions provide coatings, especially clear topcoats, which exhibit excellent scratch and mar and solvent resistance in addition to a good balance of hardness and flexibility without the need for increasing the volatile organic content (VOC) of the compositions. Also provided are compositions of a polyisocyanate compositions of the isocyanurate of one or more bis(isocyanatomethyl)cyclohexane with soft polyol which have lower VOCs.
    Type: Application
    Filed: November 16, 2011
    Publication date: May 24, 2012
    Inventors: John N. ARGYROPOULOS, Debkumar BHATTACHARJEE, Donald C. SCHALL, Allen XU, Aaron YANG, Louie LUO