Patents by Inventor Jeanne M. MacDonald

Jeanne M. MacDonald 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).

  • Propylene polymers
    Patent number: 10100183
    Abstract: This invention relates in one aspect to propylene polymers comprising propylene, said polymers having a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) of 10 dg/min to 25 dg/min; a Dimensionless Stress Ratio/Loss Tangent Index R2 at 190° C. from 1.5 to 28; an average meso run length determined by 13C NMR of at least 70 or higher; and an MFR MFR Ratio of at least 1.0 and optionally, a Loss Tangent, tan ?, at an angular frequency of 0.1 rad/s at 190° C. from 14 to 100. The inventive propylene polymer compositions are useful in in molded articles and non-woven fibers and fabrics.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: October 16, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jeanne M. MacDonald, Antonios Doufas, Jerome Sarrazin, William M. Ferry, Charles J. Ruff, Rahul R. Kulkarni, Derek W. Thurman, Cynthia A. Mitchell
  • Propylene polymers
    Patent number: 9382411
    Abstract: This invention relates to propylene polymers comprising at least 50 mol % propylene, said polymers having: a) a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) of 10 dg/min to 25 dg/min; b) a Dimensionless Stress Ratio/Loss Tangent Index R2 at 190° C. from 1.5 to 28; c) an onset temperature of crystallization under flow, Tc,rheol (as determined by SAOS rheology, 190° C., 1° C./min, where said polymer has 0 wt % nucleating agent present), of at least 131° C.; d) an average meso run length determined by 13C NMR of at least 90 or higher; and e) optionally, a loss tangent, tan ?, (defined by Eq. (2)) at an angular frequency of 0.1 rad/s at 190° C. from 14 to 70.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: July 5, 2016
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jeanne M. MacDonald, Antonios Doufas, Jerome Sarrazin, William Michael Farry, Charles J. Ruff, Rahul Ravindra Kulkami, Derek Wade Thurman, Cynthia A. Mitchell
  • Propylene Polymers
    Publication number: 20150274907
    Abstract: This invention relates in one aspect to propylene polymers comprising propylene, said polymers having a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) of 10 dg/min to 25 dg/min; a Dimensionless Stress Ratio/Loss Tangent Index R2 at 190° C. from 1.5 to 28; an average meso run length determined by 13C NMR of at least 70 or higher; and an MFR MFR Ratio of at least 1.0 and optionally, a Loss Tangent, tan ?, at an angular frequency of 0.1 rad/s at 190° C. from 14 to 100. The inventive propylene polymer compositions are useful in in molded articles and non-woven fibers and fabrics.
    Type: Application
    Filed: November 25, 2013
    Publication date: October 1, 2015
    Inventors: Jeanne M. MacDonald, Antonios Doufas, Jerome Sarrazin, William M. Ferry, Charles J. Ruff, Rahul R. Kulkarni, Derek W. Thurman, Cynthia A. Mitchell