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:
Apr. 29, 2014
Filed:
Dec. 02, 2011
Galen C. Richeson, Humble, TX (US);
Rainer Kolb, Kingwood, TX (US);
Jean-roch Schauder, Wavre, BE;
Thomas T. Sun, Clinton, NJ (US);
Galen C. Richeson, Humble, TX (US);
Rainer Kolb, Kingwood, TX (US);
Jean-Roch Schauder, Wavre, BE;
Thomas T. Sun, Clinton, NJ (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more Cand/or C-Cα-olefins. The polymer compositions have a triad tacticity greater than about 90%, a heat of fusion less than about 75 J/g, and a melt flow rate (MFR) greater than or equal to about 25 g/10 min (230° C., 2.16 kg). Further, the polymer compositions are reactor grade compositions comprising a reactor blend of a first polymer and a second polymer, preferably where both of the first and second polymers are prepared using the same catalyst system. Meltspun nonwoven fabrics, such as meltblown or spunbond fabrics, comprising such polymer compositions are also provided, as well as processes for forming the nonwoven fabrics.