US 6,982,310 B2
Alpha-olefin/propylene copolymers and their use
Sudhin Datta, Houston, Tex. (US); Avinash Chandrakant Gadkari, Houston, Tex. (US); and Charles Cozewith, Bellaire, Tex. (US)
Assigned to ExxonMobil Chemical Patents Inc., Houston, Tex. (US)
Filed on May 06, 2005, as Appl. No. 11/123,904.
Application 11/123904 is a division of application No. 10/613373, filed on Jul. 03, 2003.
Application 10/613373 is a division of application No. 08/910001, filed on Aug. 12, 1997, granted, now 6,635,715.
Prior Publication US 2005/0203252 A1, Sep. 15, 2005
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 210/00 (2006.01)
U.S. Cl. 526—348 30 Claims
 
1. An isotactic polymer comprising from about 7.3 to about 16.4 wt % ethylene and from about 83.6 to about 92.7 wt % propylene, the polymer having:
a melting point of from about 42.2° C. to about 84.7° C.;
a heat of fusion less than 75 J/g;
a crystallinity of from about 2 to about 65% of homoisotactic polypropylene; and
a MWD from about 2.0 to about 3.2.