The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 2016
Filed:
Nov. 25, 2013
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
Jeanne M. MacDonald, Sugar Land, TX (US);
Antonios Doufas, Baytown, TX (US);
Jerome Sarrazin, Sint-Stevens Woluwe, BE;
William Michael Farry, Houston, TX (US);
Charles J. Ruff, Houston, TX (US);
Rahul Ravindra Kulkami, Houston, TX (US);
Derek Wade Thurman, Friendswood, TX (US);
Cynthia A. Mitchell, Houston, TX (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
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 Rat 190° C. from 1.5 to 28; c) an onset temperature of crystallization under flow, T(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 byC NMR of at least 90 or higher; and e) optionally, a loss tangent, tan δ, (defined by Eq. (2)) at an angular frequency of 0.1 rad/s at 190° C. from 14 to 70.